Move bg/js/settings(2) (#1385)

* Move bg/js/settings/ to js/settings/

* Move bg/js/settings2/ to js/settings/

34 files changed, 0 insertions, 8277 deletions

diff --git a/ext/bg/js/settings/anki-controller.js b/ext/bg/js/settings/anki-controller.js
deleted file mode 100644
index db3e3c14..00000000
--- a/ext/bg/js/settings/anki-controller.js
+++ /dev/null
@@ -1,729 +0,0 @@
-/*
- * Copyright (C) 2019-2021  Yomichan Authors
- *
- * This program is free software: you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation, either version 3 of the License, or
- * (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program.  If not, see <https://www.gnu.org/licenses/>.
- */
-
-/* global
- * AnkiConnect
- * AnkiNoteBuilder
- * ObjectPropertyAccessor
- * SelectorObserver
- */
-
-class AnkiController {
-    constructor(settingsController) {
-        this._settingsController = settingsController;
-        this._ankiConnect = new AnkiConnect();
-        this._ankiNoteBuilder = new AnkiNoteBuilder(false);
-        this._selectorObserver = new SelectorObserver({
-            selector: '.anki-card',
-            ignoreSelector: null,
-            onAdded: this._createCardController.bind(this),
-            onRemoved: this._removeCardController.bind(this),
-            isStale: this._isCardControllerStale.bind(this)
-        });
-        this._stringComparer = new Intl.Collator(); // Locale does not matter
-        this._getAnkiDataPromise = null;
-        this._ankiErrorContainer = null;
-        this._ankiErrorMessageNode = null;
-        this._ankiErrorMessageNodeDefaultContent = '';
-        this._ankiErrorMessageDetailsNode = null;
-        this._ankiErrorMessageDetailsContainer = null;
-        this._ankiErrorMessageDetailsToggle = null;
-        this._ankiErrorInvalidResponseInfo = null;
-        this._ankiCardPrimary = null;
-        this._ankiCardPrimaryType = null;
-        this._validateFieldsToken = null;
-    }
-
-    get settingsController() {
-        return this._settingsController;
-    }
-
-    async prepare() {
-        this._ankiErrorContainer = document.querySelector('#anki-error');
-        this._ankiErrorMessageNode = document.querySelector('#anki-error-message');
-        this._ankiErrorMessageNodeDefaultContent = this._ankiErrorMessageNode.textContent;
-        this._ankiErrorMessageDetailsNode = document.querySelector('#anki-error-message-details');
-        this._ankiErrorMessageDetailsContainer = document.querySelector('#anki-error-message-details-container');
-        this._ankiErrorMessageDetailsToggle = document.querySelector('#anki-error-message-details-toggle');
-        this._ankiErrorInvalidResponseInfo = document.querySelector('#anki-error-invalid-response-info');
-        this._ankiEnableCheckbox = document.querySelector('[data-setting="anki.enable"]');
-        this._ankiCardPrimary = document.querySelector('#anki-card-primary');
-        this._ankiCardPrimaryType = document.querySelector('#anki-card-primary-type');
-
-        this._setupFieldMenus();
-
-        this._ankiErrorMessageDetailsToggle.addEventListener('click', this._onAnkiErrorMessageDetailsToggleClick.bind(this), false);
-        if (this._ankiEnableCheckbox !== null) { this._ankiEnableCheckbox.addEventListener('settingChanged', this._onAnkiEnableChanged.bind(this), false); }
-        if (this._ankiCardPrimaryType !== null) { this._ankiCardPrimaryType.addEventListener('change', this._onAnkiCardPrimaryTypeChange.bind(this), false); }
-
-        const options = await this._settingsController.getOptions();
-        this._settingsController.on('optionsChanged', this._onOptionsChanged.bind(this));
-        this._onOptionsChanged({options});
-    }
-
-    getFieldMarkers(type) {
-        switch (type) {
-            case 'terms':
-                return [
-                    'audio',
-                    'clipboard-image',
-                    'clipboard-text',
-                    'cloze-body',
-                    'cloze-prefix',
-                    'cloze-suffix',
-                    'conjugation',
-                    'dictionary',
-                    'document-title',
-                    'expression',
-                    'frequencies',
-                    'furigana',
-                    'furigana-plain',
-                    'glossary',
-                    'glossary-brief',
-                    'glossary-no-dictionary',
-                    'pitch-accents',
-                    'pitch-accent-graphs',
-                    'pitch-accent-positions',
-                    'reading',
-                    'screenshot',
-                    'sentence',
-                    'tags',
-                    'url'
-                ];
-            case 'kanji':
-                return [
-                    'character',
-                    'clipboard-image',
-                    'clipboard-text',
-                    'cloze-body',
-                    'cloze-prefix',
-                    'cloze-suffix',
-                    'dictionary',
-                    'document-title',
-                    'glossary',
-                    'kunyomi',
-                    'onyomi',
-                    'screenshot',
-                    'sentence',
-                    'stroke-count',
-                    'tags',
-                    'url'
-                ];
-            default:
-                return [];
-        }
-    }
-
-    getFieldMarkersHtml(markers) {
-        const fragment = document.createDocumentFragment();
-        for (const marker of markers) {
-            const markerNode = this._settingsController.instantiateTemplate('anki-card-field-marker');
-            markerNode.querySelector('.marker-link').textContent = marker;
-            fragment.appendChild(markerNode);
-        }
-        return fragment;
-    }
-
-    async getAnkiData() {
-        let promise = this._getAnkiDataPromise;
-        if (promise === null) {
-            promise = this._getAnkiData();
-            this._getAnkiDataPromise = promise;
-            promise.finally(() => { this._getAnkiDataPromise = null; });
-        }
-        return promise;
-    }
-
-    async getModelFieldNames(model) {
-        return await this._ankiConnect.getModelFieldNames(model);
-    }
-
-    getRequiredPermissions(fieldValue) {
-        return this._settingsController.permissionsUtil.getRequiredPermissionsForAnkiFieldValue(fieldValue);
-    }
-
-    containsAnyMarker(field) {
-        return this._ankiNoteBuilder.containsAnyMarker(field);
-    }
-
-    // Private
-
-    async _onOptionsChanged({options: {anki}}) {
-        this._ankiConnect.server = anki.server;
-        this._ankiConnect.enabled = anki.enable;
-
-        this._selectorObserver.disconnect();
-        this._selectorObserver.observe(document.documentElement, true);
-    }
-
-    _onAnkiErrorMessageDetailsToggleClick() {
-        const node = this._ankiErrorMessageDetailsContainer;
-        node.hidden = !node.hidden;
-    }
-
-    _onAnkiEnableChanged({detail: {value}}) {
-        if (this._ankiConnect.server === null) { return; }
-        this._ankiConnect.enabled = value;
-
-        for (const cardController of this._selectorObserver.datas()) {
-            cardController.updateAnkiState();
-        }
-    }
-
-    _onAnkiCardPrimaryTypeChange(e) {
-        if (this._ankiCardPrimary === null) { return; }
-        const node = e.currentTarget;
-        let ankiCardMenu;
-        if (node.selectedIndex >= 0) {
-            const option = node.options[node.selectedIndex];
-            ankiCardMenu = option.dataset.ankiCardMenu;
-        }
-
-        this._ankiCardPrimary.dataset.ankiCardType = node.value;
-        if (typeof ankiCardMenu !== 'undefined') {
-            this._ankiCardPrimary.dataset.ankiCardMenu = ankiCardMenu;
-        } else {
-            delete this._ankiCardPrimary.dataset.ankiCardMenu;
-        }
-    }
-
-    _createCardController(node) {
-        const cardController = new AnkiCardController(this._settingsController, this, node);
-        cardController.prepare();
-        return cardController;
-    }
-
-    _removeCardController(node, cardController) {
-        cardController.cleanup();
-    }
-
-    _isCardControllerStale(node, cardController) {
-        return cardController.isStale();
-    }
-
-    _setupFieldMenus() {
-        const fieldMenuTargets = [
-            [['terms'], '#anki-card-terms-field-menu-template'],
-            [['kanji'], '#anki-card-kanji-field-menu-template'],
-            [['terms', 'kanji'], '#anki-card-all-field-menu-template']
-        ];
-        for (const [types, selector] of fieldMenuTargets) {
-            const element = document.querySelector(selector);
-            if (element === null) { continue; }
-
-            let markers = [];
-            for (const type of types) {
-                markers.push(...this.getFieldMarkers(type));
-            }
-            markers = [...new Set(markers)];
-
-            const container = element.content.querySelector('.popup-menu-body');
-            if (container === null) { return; }
-
-            const fragment = document.createDocumentFragment();
-            for (const marker of markers) {
-                const option = document.createElement('button');
-                option.textContent = marker;
-                option.className = 'popup-menu-item';
-                option.dataset.menuAction = 'setFieldMarker';
-                option.dataset.marker = marker;
-                fragment.appendChild(option);
-            }
-            container.appendChild(fragment);
-        }
-    }
-
-    async _getAnkiData() {
-        this._setAnkiStatusChanging();
-        const [
-            [deckNames, error1],
-            [modelNames, error2]
-        ] = await Promise.all([
-            this._getDeckNames(),
-            this._getModelNames()
-        ]);
-
-        if (error1 !== null) {
-            this._showAnkiError(error1);
-        } else if (error2 !== null) {
-            this._showAnkiError(error2);
-        } else {
-            this._hideAnkiError();
-        }
-
-        return {deckNames, modelNames};
-    }
-
-    async _getDeckNames() {
-        try {
-            const result = await this._ankiConnect.getDeckNames();
-            this._sortStringArray(result);
-            return [result, null];
-        } catch (e) {
-            return [[], e];
-        }
-    }
-
-    async _getModelNames() {
-        try {
-            const result = await this._ankiConnect.getModelNames();
-            this._sortStringArray(result);
-            return [result, null];
-        } catch (e) {
-            return [[], e];
-        }
-    }
-
-    _setAnkiStatusChanging() {
-        this._ankiErrorMessageNode.textContent = this._ankiErrorMessageNodeDefaultContent;
-        this._ankiErrorMessageNode.classList.remove('danger-text');
-    }
-
-    _hideAnkiError() {
-        if (this._ankiErrorContainer !== null) {
-            this._ankiErrorContainer.hidden = true;
-        }
-        this._ankiErrorMessageDetailsContainer.hidden = true;
-        this._ankiErrorMessageDetailsToggle.hidden = true;
-        this._ankiErrorInvalidResponseInfo.hidden = true;
-        this._ankiErrorMessageNode.textContent = (this._ankiConnect.enabled ? 'Connected' : 'Not enabled');
-        this._ankiErrorMessageNode.classList.remove('danger-text');
-        this._ankiErrorMessageDetailsNode.textContent = '';
-    }
-
-    _showAnkiError(error) {
-        let errorString = typeof error === 'object' && error !== null ? error.message : null;
-        if (!errorString) { errorString = `${error}`; }
-        if (!/[.!?]$/.test(errorString)) { errorString += '.'; }
-        this._ankiErrorMessageNode.textContent = errorString;
-        this._ankiErrorMessageNode.classList.add('danger-text');
-
-        const data = error.data;
-        let details = '';
-        if (typeof data !== 'undefined') {
-            details += `${JSON.stringify(data, null, 4)}\n\n`;
-        }
-        details += `${error.stack}`.trimRight();
-        this._ankiErrorMessageDetailsNode.textContent = details;
-
-        if (this._ankiErrorContainer !== null) {
-            this._ankiErrorContainer.hidden = false;
-        }
-        this._ankiErrorMessageDetailsContainer.hidden = true;
-        this._ankiErrorInvalidResponseInfo.hidden = (errorString.indexOf('Invalid response') < 0);
-        this._ankiErrorMessageDetailsToggle.hidden = false;
-    }
-
-    _sortStringArray(array) {
-        const stringComparer = this._stringComparer;
-        array.sort((a, b) => stringComparer.compare(a, b));
-    }
-}
-
-class AnkiCardController {
-    constructor(settingsController, ankiController, node) {
-        this._settingsController = settingsController;
-        this._ankiController = ankiController;
-        this._node = node;
-        this._cardType = node.dataset.ankiCardType;
-        this._cardMenu = node.dataset.ankiCardMenu;
-        this._eventListeners = new EventListenerCollection();
-        this._fieldEventListeners = new EventListenerCollection();
-        this._deck = null;
-        this._model = null;
-        this._fields = null;
-        this._modelChangingTo = null;
-        this._ankiCardDeckSelect = null;
-        this._ankiCardModelSelect = null;
-        this._ankiCardFieldsContainer = null;
-        this._cleaned = false;
-        this._fieldEntries = [];
-    }
-
-    async prepare() {
-        const options = await this._settingsController.getOptions();
-        const ankiOptions = options.anki;
-        if (this._cleaned) { return; }
-
-        const cardOptions = this._getCardOptions(ankiOptions, this._cardType);
-        if (cardOptions === null) { return; }
-        const {deck, model, fields} = cardOptions;
-        this._deck = deck;
-        this._model = model;
-        this._fields = fields;
-
-        this._ankiCardDeckSelect = this._node.querySelector('.anki-card-deck');
-        this._ankiCardModelSelect = this._node.querySelector('.anki-card-model');
-        this._ankiCardFieldsContainer = this._node.querySelector('.anki-card-fields');
-
-        this._setupSelects([], []);
-        this._setupFields();
-
-        this._eventListeners.addEventListener(this._ankiCardDeckSelect, 'change', this._onCardDeckChange.bind(this), false);
-        this._eventListeners.addEventListener(this._ankiCardModelSelect, 'change', this._onCardModelChange.bind(this), false);
-        this._eventListeners.on(this._settingsController, 'permissionsChanged', this._onPermissionsChanged.bind(this));
-
-        await this.updateAnkiState();
-    }
-
-    cleanup() {
-        this._cleaned = true;
-        this._fieldEntries = [];
-        this._eventListeners.removeAllEventListeners();
-    }
-
-    async updateAnkiState() {
-        if (this._fields === null) { return; }
-        const {deckNames, modelNames} = await this._ankiController.getAnkiData();
-        if (this._cleaned) { return; }
-        this._setupSelects(deckNames, modelNames);
-    }
-
-    isStale() {
-        return (this._cardType !== this._node.dataset.ankiCardType);
-    }
-
-    // Private
-
-    _onCardDeckChange(e) {
-        this._setDeck(e.currentTarget.value);
-    }
-
-    _onCardModelChange(e) {
-        this._setModel(e.currentTarget.value);
-    }
-
-    _onFieldChange(index, e) {
-        const node = e.currentTarget;
-        this._validateFieldPermissions(node, index, true);
-        this._validateField(node, index);
-    }
-
-    _onFieldInput(index, e) {
-        const node = e.currentTarget;
-        this._validateField(node, index);
-    }
-
-    _onFieldSettingChanged(index, e) {
-        const node = e.currentTarget;
-        this._validateFieldPermissions(node, index, false);
-    }
-
-    _onFieldMenuClose({currentTarget: button, detail: {action, item}}) {
-        switch (action) {
-            case 'setFieldMarker':
-                this._setFieldMarker(button, item.dataset.marker);
-                break;
-        }
-    }
-
-    _onFieldMarkerLinkClick(e) {
-        e.preventDefault();
-        const link = e.currentTarget;
-        this._setFieldMarker(link, link.textContent);
-    }
-
-    _validateField(node, index) {
-        let valid = (node.dataset.hasPermissions !== 'false');
-        if (valid && index === 0 && !this._ankiController.containsAnyMarker(node.value)) {
-            valid = false;
-        }
-        node.dataset.invalid = `${!valid}`;
-    }
-
-    _setFieldMarker(element, marker) {
-        const input = element.closest('.anki-card-field-value-container').querySelector('.anki-card-field-value');
-        input.value = `{${marker}}`;
-        input.dispatchEvent(new Event('change'));
-    }
-
-    _getCardOptions(ankiOptions, cardType) {
-        switch (cardType) {
-            case 'terms': return ankiOptions.terms;
-            case 'kanji': return ankiOptions.kanji;
-            default: return null;
-        }
-    }
-
-    _setupSelects(deckNames, modelNames) {
-        const deck = this._deck;
-        const model = this._model;
-        if (!deckNames.includes(deck)) { deckNames = [...deckNames, deck]; }
-        if (!modelNames.includes(model)) { modelNames = [...modelNames, model]; }
-
-        this._setSelectOptions(this._ankiCardDeckSelect, deckNames);
-        this._ankiCardDeckSelect.value = deck;
-
-        this._setSelectOptions(this._ankiCardModelSelect, modelNames);
-        this._ankiCardModelSelect.value = model;
-    }
-
-    _setSelectOptions(select, optionValues) {
-        const fragment = document.createDocumentFragment();
-        for (const optionValue of optionValues) {
-            const option = document.createElement('option');
-            option.value = optionValue;
-            option.textContent = optionValue;
-            fragment.appendChild(option);
-        }
-        select.textContent = '';
-        select.appendChild(fragment);
-    }
-
-    _setupFields() {
-        this._fieldEventListeners.removeAllEventListeners();
-
-        const markers = this._ankiController.getFieldMarkers(this._cardType);
-        const totalFragment = document.createDocumentFragment();
-        this._fieldEntries = [];
-        let index = 0;
-        for (const [fieldName, fieldValue] of Object.entries(this._fields)) {
-            const content = this._settingsController.instantiateTemplateFragment('anki-card-field');
-
-            const fieldNameContainerNode = content.querySelector('.anki-card-field-name-container');
-            fieldNameContainerNode.dataset.index = `${index}`;
-            const fieldNameNode = content.querySelector('.anki-card-field-name');
-            fieldNameNode.textContent = fieldName;
-
-            const valueContainer = content.querySelector('.anki-card-field-value-container');
-            valueContainer.dataset.index = `${index}`;
-
-            const inputField = content.querySelector('.anki-card-field-value');
-            inputField.value = fieldValue;
-            inputField.dataset.setting = ObjectPropertyAccessor.getPathString(['anki', this._cardType, 'fields', fieldName]);
-            this._validateFieldPermissions(inputField, index, false);
-
-            this._fieldEventListeners.addEventListener(inputField, 'change', this._onFieldChange.bind(this, index), false);
-            this._fieldEventListeners.addEventListener(inputField, 'input', this._onFieldInput.bind(this, index), false);
-            this._fieldEventListeners.addEventListener(inputField, 'settingChanged', this._onFieldSettingChanged.bind(this, index), false);
-            this._validateField(inputField, index);
-
-            const markerList = content.querySelector('.anki-card-field-marker-list');
-            if (markerList !== null) {
-                const markersFragment = this._ankiController.getFieldMarkersHtml(markers);
-                for (const element of markersFragment.querySelectorAll('.marker-link')) {
-                    this._fieldEventListeners.addEventListener(element, 'click', this._onFieldMarkerLinkClick.bind(this), false);
-                }
-                markerList.appendChild(markersFragment);
-            }
-
-            const menuButton = content.querySelector('.anki-card-field-value-menu-button');
-            if (menuButton !== null) {
-                if (typeof this._cardMenu !== 'undefined') {
-                    menuButton.dataset.menu = this._cardMenu;
-                } else {
-                    delete menuButton.dataset.menu;
-                }
-                this._fieldEventListeners.addEventListener(menuButton, 'menuClose', this._onFieldMenuClose.bind(this), false);
-            }
-
-            totalFragment.appendChild(content);
-            this._fieldEntries.push({fieldName, inputField, fieldNameContainerNode});
-
-            ++index;
-        }
-
-        const ELEMENT_NODE = Node.ELEMENT_NODE;
-        const container = this._ankiCardFieldsContainer;
-        for (const node of [...container.childNodes]) {
-            if (node.nodeType === ELEMENT_NODE && node.dataset.persistent === 'true') { continue; }
-            container.removeChild(node);
-        }
-        container.appendChild(totalFragment);
-
-        this._validateFields();
-    }
-
-    async _validateFields() {
-        const token = {};
-        this._validateFieldsToken = token;
-
-        let fieldNames;
-        try {
-            fieldNames = await this._ankiController.getModelFieldNames(this._model);
-        } catch (e) {
-            return;
-        }
-
-        if (token !== this._validateFieldsToken) { return; }
-
-        const fieldNamesSet = new Set(fieldNames);
-        let index = 0;
-        for (const {fieldName, fieldNameContainerNode} of this._fieldEntries) {
-            fieldNameContainerNode.dataset.invalid = `${!fieldNamesSet.has(fieldName)}`;
-            fieldNameContainerNode.dataset.orderMatches = `${index < fieldNames.length && fieldName === fieldNames[index]}`;
-            ++index;
-        }
-    }
-
-    async _setDeck(value) {
-        if (this._deck === value) { return; }
-        this._deck = value;
-
-        await this._settingsController.modifyProfileSettings([{
-            action: 'set',
-            path: ObjectPropertyAccessor.getPathString(['anki', this._cardType, 'deck']),
-            value
-        }]);
-    }
-
-    async _setModel(value) {
-        if (this._modelChangingTo !== null) {
-            // Revert
-            this._ankiCardModelSelect.value = this._modelChangingTo;
-            return;
-        }
-        if (this._model === value) { return; }
-
-        let fieldNames;
-        let options;
-        try {
-            this._modelChangingTo = value;
-            fieldNames = await this._ankiController.getModelFieldNames(value);
-            options = await this._ankiController.settingsController.getOptions();
-        } catch (e) {
-            // Revert
-            this._ankiCardModelSelect.value = this._model;
-            return;
-        } finally {
-            this._modelChangingTo = null;
-        }
-
-        const cardType = this._cardType;
-        const cardOptions = this._getCardOptions(options.anki, cardType);
-        const oldFields = cardOptions !== null ? cardOptions.fields : null;
-
-        const fields = {};
-        for (let i = 0, ii = fieldNames.length; i < ii; ++i) {
-            const fieldName = fieldNames[i];
-            fields[fieldName] = this._getDefaultFieldValue(fieldName, i, cardType, oldFields);
-        }
-
-        const targets = [
-            {
-                action: 'set',
-                path: ObjectPropertyAccessor.getPathString(['anki', this._cardType, 'model']),
-                value
-            },
-            {
-                action: 'set',
-                path: ObjectPropertyAccessor.getPathString(['anki', this._cardType, 'fields']),
-                value: fields
-            }
-        ];
-
-        this._model = value;
-        this._fields = fields;
-
-        await this._settingsController.modifyProfileSettings(targets);
-
-        this._setupFields();
-    }
-
-    async _requestPermissions(permissions) {
-        try {
-            await this._settingsController.permissionsUtil.setPermissionsGranted({permissions}, true);
-        } catch (e) {
-            yomichan.logError(e);
-        }
-    }
-
-    async _validateFieldPermissions(node, index, request) {
-        const fieldValue = node.value;
-        const permissions = this._ankiController.getRequiredPermissions(fieldValue);
-        if (permissions.length > 0) {
-            node.dataset.requiredPermission = permissions.join(' ');
-            const hasPermissions = await (
-                request ?
-                this._settingsController.permissionsUtil.setPermissionsGranted({permissions}, true) :
-                this._settingsController.permissionsUtil.hasPermissions({permissions})
-            );
-            node.dataset.hasPermissions = `${hasPermissions}`;
-        } else {
-            delete node.dataset.requiredPermission;
-            delete node.dataset.hasPermissions;
-        }
-
-        this._validateField(node, index);
-    }
-
-    _onPermissionsChanged({permissions: {permissions}}) {
-        const permissionsSet = new Set(permissions);
-        for (let i = 0, ii = this._fieldEntries.length; i < ii; ++i) {
-            const {inputField} = this._fieldEntries[i];
-            let {requiredPermission} = inputField.dataset;
-            if (typeof requiredPermission !== 'string') { continue; }
-            requiredPermission = (requiredPermission.length === 0 ? [] : requiredPermission.split(' '));
-
-            let hasPermissions = true;
-            for (const permission of requiredPermission) {
-                if (!permissionsSet.has(permission)) {
-                    hasPermissions = false;
-                    break;
-                }
-            }
-
-            inputField.dataset.hasPermissions = `${hasPermissions}`;
-            this._validateField(inputField, i);
-        }
-    }
-
-    _getDefaultFieldValue(fieldName, index, cardType, oldFields) {
-        if (
-            typeof oldFields === 'object' &&
-            oldFields !== null &&
-            Object.prototype.hasOwnProperty.call(oldFields, fieldName)
-        ) {
-            return oldFields[fieldName];
-        }
-
-        if (index === 0) {
-            return (cardType === 'kanji' ? '{character}' : '{expression}');
-        }
-
-        const markers = this._ankiController.getFieldMarkers(cardType);
-        const markerAliases = new Map([
-            ['glossary', ['definition', 'meaning']],
-            ['audio', ['sound']],
-            ['dictionary', ['dict']]
-        ]);
-
-        const hyphenPattern = /-/g;
-        for (const marker of markers) {
-            const names = [marker];
-            const aliases = markerAliases.get(marker);
-            if (typeof aliases !== 'undefined') {
-                names.push(...aliases);
-            }
-
-            let pattern = '^(?:';
-            for (let i = 0, ii = names.length; i < ii; ++i) {
-                const name = names[i];
-                if (i > 0) { pattern += '|'; }
-                pattern += name.replace(hyphenPattern, '[-_ ]*');
-            }
-            pattern += ')$';
-            pattern = new RegExp(pattern, 'i');
-
-            if (pattern.test(fieldName)) {
-                return `{${marker}}`;
-            }
-        }
-
-        return '';
-    }
-}
diff --git a/ext/bg/js/settings/anki-templates-controller.js b/ext/bg/js/settings/anki-templates-controller.js
deleted file mode 100644
index 31bd1e92..00000000
--- a/ext/bg/js/settings/anki-templates-controller.js
+++ /dev/null
@@ -1,228 +0,0 @@
-/*
- * Copyright (C) 2019-2021  Yomichan Authors
- *
- * This program is free software: you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation, either version 3 of the License, or
- * (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program.  If not, see <https://www.gnu.org/licenses/>.
- */
-
-/* global
- * AnkiNoteBuilder
- * api
- */
-
-class AnkiTemplatesController {
-    constructor(settingsController, modalController, ankiController) {
-        this._settingsController = settingsController;
-        this._modalController = modalController;
-        this._ankiController = ankiController;
-        this._cachedDefinitionValue = null;
-        this._cachedDefinitionText = null;
-        this._defaultFieldTemplates = null;
-        this._fieldTemplatesTextarea = null;
-        this._compileResultInfo = null;
-        this._renderFieldInput = null;
-        this._renderResult = null;
-        this._fieldTemplateResetModal = null;
-        this._ankiNoteBuilder = new AnkiNoteBuilder(true);
-    }
-
-    async prepare() {
-        this._defaultFieldTemplates = await api.getDefaultAnkiFieldTemplates();
-
-        this._fieldTemplatesTextarea = document.querySelector('#anki-card-templates-textarea');
-        this._compileResultInfo = document.querySelector('#anki-card-templates-compile-result');
-        this._renderFieldInput = document.querySelector('#anki-card-templates-test-field-input');
-        this._renderTextInput = document.querySelector('#anki-card-templates-test-text-input');
-        this._renderResult = document.querySelector('#anki-card-templates-render-result');
-        const menuButton = document.querySelector('#anki-card-templates-test-field-menu-button');
-        const testRenderButton = document.querySelector('#anki-card-templates-test-render-button');
-        const resetButton = document.querySelector('#anki-card-templates-reset-button');
-        const resetConfirmButton = document.querySelector('#anki-card-templates-reset-button-confirm');
-        const fieldList = document.querySelector('#anki-card-templates-field-list');
-        this._fieldTemplateResetModal = this._modalController.getModal('anki-card-templates-reset');
-
-        const markers = new Set([
-            ...this._ankiController.getFieldMarkers('terms'),
-            ...this._ankiController.getFieldMarkers('kanji')
-        ]);
-
-        if (fieldList !== null) {
-            const fragment = this._ankiController.getFieldMarkersHtml(markers);
-            fieldList.appendChild(fragment);
-            for (const node of fieldList.querySelectorAll('.marker-link')) {
-                node.addEventListener('click', this._onMarkerClicked.bind(this), false);
-            }
-        }
-
-        this._fieldTemplatesTextarea.addEventListener('change', this._onChanged.bind(this), false);
-        testRenderButton.addEventListener('click', this._onRender.bind(this), false);
-        resetButton.addEventListener('click', this._onReset.bind(this), false);
-        resetConfirmButton.addEventListener('click', this._onResetConfirm.bind(this), false);
-        if (menuButton !== null) {
-            menuButton.addEventListener('menuClose', this._onFieldMenuClose.bind(this), false);
-        }
-
-        this._settingsController.on('optionsChanged', this._onOptionsChanged.bind(this));
-
-        const options = await this._settingsController.getOptions();
-        this._onOptionsChanged({options});
-    }
-
-    // Private
-
-    _onOptionsChanged({options}) {
-        let templates = options.anki.fieldTemplates;
-        if (typeof templates !== 'string') { templates = this._defaultFieldTemplates; }
-        this._fieldTemplatesTextarea.value = templates;
-
-        this._onValidateCompile();
-    }
-
-    _onReset(e) {
-        e.preventDefault();
-        this._fieldTemplateResetModal.setVisible(true);
-    }
-
-    _onResetConfirm(e) {
-        e.preventDefault();
-
-        this._fieldTemplateResetModal.setVisible(false);
-
-        const value = this._defaultFieldTemplates;
-
-        this._fieldTemplatesTextarea.value = value;
-        this._fieldTemplatesTextarea.dispatchEvent(new Event('change'));
-    }
-
-    async _onChanged(e) {
-        // Get value
-        let templates = e.currentTarget.value;
-        if (templates === this._defaultFieldTemplates) {
-            // Default
-            templates = null;
-        }
-
-        // Overwrite
-        await this._settingsController.setProfileSetting('anki.fieldTemplates', templates);
-
-        // Compile
-        this._onValidateCompile();
-    }
-
-    _onValidateCompile() {
-        this._validate(this._compileResultInfo, '{expression}', 'term-kanji', false, true);
-    }
-
-    _onMarkerClicked(e) {
-        e.preventDefault();
-        this._renderFieldInput.value = `{${e.target.textContent}}`;
-    }
-
-    _onRender(e) {
-        e.preventDefault();
-
-        const field = this._renderFieldInput.value;
-        const infoNode = this._renderResult;
-        infoNode.hidden = true;
-        this._cachedDefinitionText = null;
-        this._validate(infoNode, field, 'term-kanji', true, false);
-    }
-
-    _onFieldMenuClose({currentTarget: button, detail: {action, item}}) {
-        switch (action) {
-            case 'setFieldMarker':
-                this._setFieldMarker(button, item.dataset.marker);
-                break;
-        }
-    }
-
-    _setFieldMarker(element, marker) {
-        const input = this._renderFieldInput;
-        input.value = `{${marker}}`;
-        input.dispatchEvent(new Event('change'));
-    }
-
-    async _getDefinition(text, optionsContext) {
-        if (this._cachedDefinitionText !== text) {
-            const {definitions} = await api.termsFind(text, {}, optionsContext);
-            if (definitions.length === 0) { return null; }
-
-            this._cachedDefinitionValue = definitions[0];
-            this._cachedDefinitionText = text;
-        }
-        return this._cachedDefinitionValue;
-    }
-
-    async _validate(infoNode, field, mode, showSuccessResult, invalidateInput) {
-        const text = this._renderTextInput.value || '';
-        const errors = [];
-        let result = `No definition found for ${text}`;
-        try {
-            const optionsContext = this._settingsController.getOptionsContext();
-            const definition = await this._getDefinition(text, optionsContext);
-            if (definition !== null) {
-                const options = await this._settingsController.getOptions();
-                const context = {
-                    url: window.location.href,
-                    sentence: {text: definition.rawSource, offset: 0},
-                    documentTitle: document.title
-                };
-                let templates = options.anki.fieldTemplates;
-                if (typeof templates !== 'string') { templates = this._defaultFieldTemplates; }
-                const {general: {resultOutputMode, glossaryLayoutMode, compactTags}} = options;
-                const note = await this._ankiNoteBuilder.createNote({
-                    definition,
-                    mode,
-                    context,
-                    templates,
-                    deckName: '',
-                    modelName: '',
-                    fields: [
-                        ['field', field]
-                    ],
-                    resultOutputMode,
-                    glossaryLayoutMode,
-                    compactTags,
-                    errors
-                });
-                result = note.fields.field;
-            }
-        } catch (e) {
-            errors.push(e);
-        }
-
-        const errorToMessageString = (e) => {
-            if (isObject(e)) {
-                let v = e.data;
-                if (isObject(v)) {
-                    v = v.error;
-                    if (isObject(v)) {
-                        e = v;
-                    }
-                }
-
-                v = e.message;
-                if (typeof v === 'string') { return v; }
-            }
-            return `${e}`;
-        };
-
-        const hasError = errors.length > 0;
-        infoNode.hidden = !(showSuccessResult || hasError);
-        infoNode.textContent = hasError ? errors.map(errorToMessageString).join('\n') : (showSuccessResult ? result : '');
-        infoNode.classList.toggle('text-danger', hasError);
-        if (invalidateInput) {
-            this._fieldTemplatesTextarea.dataset.invalid = `${hasError}`;
-        }
-    }
-}
diff --git a/ext/bg/js/settings/audio-controller.js b/ext/bg/js/settings/audio-controller.js
deleted file mode 100644
index e62383a8..00000000
--- a/ext/bg/js/settings/audio-controller.js
+++ /dev/null
@@ -1,234 +0,0 @@
-/*
- * Copyright (C) 2019-2021  Yomichan Authors
- *
- * This program is free software: you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation, either version 3 of the License, or
- * (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program.  If not, see <https://www.gnu.org/licenses/>.
- */
-
-/* global
- * AudioSystem
- */
-
-class AudioController {
-    constructor(settingsController) {
-        this._settingsController = settingsController;
-        this._audioSystem = new AudioSystem();
-        this._audioSourceContainer = null;
-        this._audioSourceAddButton = null;
-        this._audioSourceEntries = [];
-        this._ttsVoiceTestTextInput = null;
-    }
-
-    async prepare() {
-        this._audioSystem.prepare();
-
-        this._ttsVoiceTestTextInput = document.querySelector('#text-to-speech-voice-test-text');
-        this._audioSourceContainer = document.querySelector('#audio-source-list');
-        this._audioSourceAddButton = document.querySelector('#audio-source-add');
-        this._audioSourceContainer.textContent = '';
-
-        this._audioSourceAddButton.addEventListener('click', this._onAddAudioSource.bind(this), false);
-
-        if (typeof speechSynthesis !== 'undefined') {
-            speechSynthesis.addEventListener('voiceschanged', this._updateTextToSpeechVoices.bind(this), false);
-        }
-        this._updateTextToSpeechVoices();
-
-        document.querySelector('#text-to-speech-voice-test').addEventListener('click', this._onTestTextToSpeech.bind(this), false);
-
-        this._settingsController.on('optionsChanged', this._onOptionsChanged.bind(this));
-
-        const options = await this._settingsController.getOptions();
-        this._onOptionsChanged({options});
-    }
-
-    // Private
-
-    _onOptionsChanged({options}) {
-        for (let i = this._audioSourceEntries.length - 1; i >= 0; --i) {
-            this._cleanupAudioSourceEntry(i);
-        }
-
-        for (const audioSource of options.audio.sources) {
-            this._createAudioSourceEntry(audioSource);
-        }
-    }
-
-    _onTestTextToSpeech() {
-        try {
-            const text = this._ttsVoiceTestTextInput.value || '';
-            const voiceUri = document.querySelector('[data-setting="audio.textToSpeechVoice"]').value;
-
-            const audio = this._audioSystem.createTextToSpeechAudio(text, voiceUri);
-            audio.volume = 1.0;
-            audio.play();
-        } catch (e) {
-            // NOP
-        }
-    }
-
-    _updateTextToSpeechVoices() {
-        const voices = (
-            typeof speechSynthesis !== 'undefined' ?
-            [...speechSynthesis.getVoices()].map((voice, index) => ({
-                voice,
-                isJapanese: this._languageTagIsJapanese(voice.lang),
-                index
-            })) :
-            []
-        );
-        voices.sort(this._textToSpeechVoiceCompare.bind(this));
-
-        for (const select of document.querySelectorAll('[data-setting="audio.textToSpeechVoice"]')) {
-            const fragment = document.createDocumentFragment();
-
-            let option = document.createElement('option');
-            option.value = '';
-            option.textContent = 'None';
-            fragment.appendChild(option);
-
-            for (const {voice} of voices) {
-                option = document.createElement('option');
-                option.value = voice.voiceURI;
-                option.textContent = `${voice.name} (${voice.lang})`;
-                fragment.appendChild(option);
-            }
-
-            select.textContent = '';
-            select.appendChild(fragment);
-        }
-    }
-
-    _textToSpeechVoiceCompare(a, b) {
-        if (a.isJapanese) {
-            if (!b.isJapanese) { return -1; }
-        } else {
-            if (b.isJapanese) { return 1; }
-        }
-
-        if (a.voice.default) {
-            if (!b.voice.default) { return -1; }
-        } else {
-            if (b.voice.default) { return 1; }
-        }
-
-        return a.index - b.index;
-    }
-
-    _languageTagIsJapanese(languageTag) {
-        return (
-            languageTag.startsWith('ja_') ||
-            languageTag.startsWith('ja-') ||
-            languageTag.startsWith('jpn-')
-        );
-    }
-
-    _getUnusedAudioSource() {
-        const audioSourcesAvailable = [
-            'jpod101',
-            'jpod101-alternate',
-            'jisho',
-            'custom'
-        ];
-        for (const source of audioSourcesAvailable) {
-            if (!this._audioSourceEntries.some((metadata) => metadata.value === source)) {
-                return source;
-            }
-        }
-        return audioSourcesAvailable[0];
-    }
-
-    _createAudioSourceEntry(value) {
-        const eventListeners = new EventListenerCollection();
-        const container = this._settingsController.instantiateTemplate('audio-source');
-        const select = container.querySelector('.audio-source-select');
-        const removeButton = container.querySelector('.audio-source-remove');
-        const menuButton = container.querySelector('.audio-source-menu-button');
-
-        select.value = value;
-
-        const entry = {
-            container,
-            eventListeners,
-            value
-        };
-
-        eventListeners.addEventListener(select, 'change', this._onAudioSourceSelectChange.bind(this, entry), false);
-        if (removeButton !== null) {
-            eventListeners.addEventListener(removeButton, 'click', this._onAudioSourceRemoveClicked.bind(this, entry), false);
-        }
-        if (menuButton !== null) {
-            eventListeners.addEventListener(menuButton, 'menuClose', this._onMenuClose.bind(this, entry), false);
-        }
-
-        this._audioSourceContainer.appendChild(container);
-        this._audioSourceEntries.push(entry);
-    }
-
-    async _removeAudioSourceEntry(entry) {
-        const index = this._audioSourceEntries.indexOf(entry);
-        if (index < 0) { return; }
-
-        this._cleanupAudioSourceEntry(index);
-        await this._settingsController.modifyProfileSettings([{
-            action: 'splice',
-            path: 'audio.sources',
-            start: index,
-            deleteCount: 1,
-            items: []
-        }]);
-    }
-
-    _cleanupAudioSourceEntry(index) {
-        const {container, eventListeners} = this._audioSourceEntries[index];
-        if (container.parentNode !== null) {
-            container.parentNode.removeChild(container);
-        }
-        eventListeners.removeAllEventListeners();
-        this._audioSourceEntries.splice(index, 1);
-    }
-
-    async _onAddAudioSource() {
-        const audioSource = this._getUnusedAudioSource();
-        const index = this._audioSourceEntries.length;
-        this._createAudioSourceEntry(audioSource);
-        await this._settingsController.modifyProfileSettings([{
-            action: 'splice',
-            path: 'audio.sources',
-            start: index,
-            deleteCount: 0,
-            items: [audioSource]
-        }]);
-    }
-
-    async _onAudioSourceSelectChange(entry, event) {
-        const index = this._audioSourceEntries.indexOf(entry);
-        if (index < 0) { return; }
-
-        const value = event.currentTarget.value;
-        entry.value = value;
-        await this._settingsController.setProfileSetting(`audio.sources[${index}]`, value);
-    }
-
-    _onAudioSourceRemoveClicked(entry) {
-        this._removeAudioSourceEntry(entry);
-    }
-
-    _onMenuClose(entry, e) {
-        switch (e.detail.action) {
-            case 'remove':
-                this._removeAudioSourceEntry(entry);
-                break;
-        }
-    }
-}
diff --git a/ext/bg/js/settings/backup-controller.js b/ext/bg/js/settings/backup-controller.js
deleted file mode 100644
index 8837b927..00000000
--- a/ext/bg/js/settings/backup-controller.js
+++ /dev/null
@@ -1,419 +0,0 @@
-/*
- * Copyright (C) 2019-2021  Yomichan Authors
- *
- * This program is free software: you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation, either version 3 of the License, or
- * (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program.  If not, see <https://www.gnu.org/licenses/>.
- */
-
-/* global
- * DictionaryController
- * OptionsUtil
- * api
- */
-
-class BackupController {
-    constructor(settingsController, modalController) {
-        this._settingsController = settingsController;
-        this._modalController = modalController;
-        this._settingsExportToken = null;
-        this._settingsExportRevoke = null;
-        this._currentVersion = 0;
-        this._settingsResetModal = null;
-        this._settingsImportErrorModal = null;
-        this._settingsImportWarningModal = null;
-        this._optionsUtil = null;
-        try {
-            this._optionsUtil = new OptionsUtil();
-        } catch (e) {
-            // NOP
-        }
-    }
-
-    async prepare() {
-        if (this._optionsUtil !== null) {
-            await this._optionsUtil.prepare();
-        }
-
-        if (this._modalController !== null) {
-            this._settingsResetModal = this._modalController.getModal('settings-reset');
-            this._settingsImportErrorModal = this._modalController.getModal('settings-import-error');
-            this._settingsImportWarningModal = this._modalController.getModal('settings-import-warning');
-        }
-
-        this._addNodeEventListener('#settings-export-button', 'click', this._onSettingsExportClick.bind(this), false);
-        this._addNodeEventListener('#settings-import-button', 'click', this._onSettingsImportClick.bind(this), false);
-        this._addNodeEventListener('#settings-import-file', 'change', this._onSettingsImportFileChange.bind(this), false);
-        this._addNodeEventListener('#settings-reset-button', 'click', this._onSettingsResetClick.bind(this), false);
-        this._addNodeEventListener('#settings-reset-confirm-button', 'click', this._onSettingsResetConfirmClick.bind(this), false);
-    }
-
-    // Private
-
-    _addNodeEventListener(selector, ...args) {
-        const node = document.querySelector(selector);
-        if (node === null) { return; }
-
-        node.addEventListener(...args);
-    }
-
-    _getSettingsExportDateString(date, dateSeparator, dateTimeSeparator, timeSeparator, resolution) {
-        const values = [
-            date.getUTCFullYear().toString(),
-            dateSeparator,
-            (date.getUTCMonth() + 1).toString().padStart(2, '0'),
-            dateSeparator,
-            date.getUTCDate().toString().padStart(2, '0'),
-            dateTimeSeparator,
-            date.getUTCHours().toString().padStart(2, '0'),
-            timeSeparator,
-            date.getUTCMinutes().toString().padStart(2, '0'),
-            timeSeparator,
-            date.getUTCSeconds().toString().padStart(2, '0')
-        ];
-        return values.slice(0, resolution * 2 - 1).join('');
-    }
-
-    async _getSettingsExportData(date) {
-        const optionsFull = await this._settingsController.getOptionsFull();
-        const environment = await api.getEnvironmentInfo();
-        const fieldTemplatesDefault = await api.getDefaultAnkiFieldTemplates();
-        const permissions = await this._settingsController.permissionsUtil.getAllPermissions();
-
-        // Format options
-        for (const {options} of optionsFull.profiles) {
-            if (options.anki.fieldTemplates === fieldTemplatesDefault || !options.anki.fieldTemplates) {
-                options.anki.fieldTemplates = null;
-            }
-        }
-
-        const data = {
-            version: this._currentVersion,
-            date: this._getSettingsExportDateString(date, '-', ' ', ':', 6),
-            url: chrome.runtime.getURL('/'),
-            manifest: chrome.runtime.getManifest(),
-            environment,
-            userAgent: navigator.userAgent,
-            permissions,
-            options: optionsFull
-        };
-
-        return data;
-    }
-
-    _saveBlob(blob, fileName) {
-        if (typeof navigator === 'object' && typeof navigator.msSaveBlob === 'function') {
-            if (navigator.msSaveBlob(blob)) {
-                return;
-            }
-        }
-
-        const blobUrl = URL.createObjectURL(blob);
-
-        const a = document.createElement('a');
-        a.href = blobUrl;
-        a.download = fileName;
-        a.rel = 'noopener';
-        a.target = '_blank';
-
-        const revoke = () => {
-            URL.revokeObjectURL(blobUrl);
-            a.href = '';
-            this._settingsExportRevoke = null;
-        };
-        this._settingsExportRevoke = revoke;
-
-        a.dispatchEvent(new MouseEvent('click'));
-        setTimeout(revoke, 60000);
-    }
-
-    async _onSettingsExportClick() {
-        if (this._settingsExportRevoke !== null) {
-            this._settingsExportRevoke();
-            this._settingsExportRevoke = null;
-        }
-
-        const date = new Date(Date.now());
-
-        const token = {};
-        this._settingsExportToken = token;
-        const data = await this._getSettingsExportData(date);
-        if (this._settingsExportToken !== token) {
-            // A new export has been started
-            return;
-        }
-        this._settingsExportToken = null;
-
-        const fileName = `yomichan-settings-${this._getSettingsExportDateString(date, '-', '-', '-', 6)}.json`;
-        const blob = new Blob([JSON.stringify(data, null, 4)], {type: 'application/json'});
-        this._saveBlob(blob, fileName);
-    }
-
-    _readFileArrayBuffer(file) {
-        return new Promise((resolve, reject) => {
-            const reader = new FileReader();
-            reader.onload = () => resolve(reader.result);
-            reader.onerror = () => reject(reader.error);
-            reader.readAsArrayBuffer(file);
-        });
-    }
-
-    // Importing
-
-    async _settingsImportSetOptionsFull(optionsFull) {
-        await this._settingsController.setAllSettings(optionsFull);
-    }
-
-    _showSettingsImportError(error) {
-        yomichan.logError(error);
-        document.querySelector('#settings-import-error-message').textContent = `${error}`;
-        this._settingsImportErrorModal.setVisible(true);
-    }
-
-    async _showSettingsImportWarnings(warnings) {
-        const modal = this._settingsImportWarningModal;
-        const buttons = document.querySelectorAll('.settings-import-warning-import-button');
-        const messageContainer = document.querySelector('#settings-import-warning-message');
-        if (buttons.length === 0 || messageContainer === null) {
-            return {result: false};
-        }
-
-        // Set message
-        const fragment = document.createDocumentFragment();
-        for (const warning of warnings) {
-            const node = document.createElement('li');
-            node.textContent = `${warning}`;
-            fragment.appendChild(node);
-        }
-        messageContainer.textContent = '';
-        messageContainer.appendChild(fragment);
-
-        // Show modal
-        modal.setVisible(true);
-
-        // Wait for modal to close
-        return new Promise((resolve) => {
-            const onButtonClick = (e) => {
-                e.preventDefault();
-                complete({
-                    result: true,
-                    sanitize: e.currentTarget.dataset.importSanitize === 'true'
-                });
-                modal.setVisible(false);
-            };
-            const onModalVisibilityChanged = ({visible}) => {
-                if (visible) { return; }
-                complete({result: false});
-            };
-
-            let completed = false;
-            const complete = (result) => {
-                if (completed) { return; }
-                completed = true;
-
-                modal.off('visibilityChanged', onModalVisibilityChanged);
-                for (const button of buttons) {
-                    button.removeEventListener('click', onButtonClick, false);
-                }
-
-                resolve(result);
-            };
-
-            // Hook events
-            modal.on('visibilityChanged', onModalVisibilityChanged);
-            for (const button of buttons) {
-                button.addEventListener('click', onButtonClick, false);
-            }
-        });
-    }
-
-    _isLocalhostUrl(urlString) {
-        try {
-            const url = new URL(urlString);
-            switch (url.hostname.toLowerCase()) {
-                case 'localhost':
-                case '127.0.0.1':
-                case '[::1]':
-                    switch (url.protocol.toLowerCase()) {
-                        case 'http:':
-                        case 'https:':
-                            return true;
-                    }
-                    break;
-            }
-        } catch (e) {
-            // NOP
-        }
-        return false;
-    }
-
-    _settingsImportSanitizeProfileOptions(options, dryRun) {
-        const warnings = [];
-
-        const anki = options.anki;
-        if (isObject(anki)) {
-            const fieldTemplates = anki.fieldTemplates;
-            if (typeof fieldTemplates === 'string') {
-                warnings.push('anki.fieldTemplates contains a non-default value');
-                if (!dryRun) {
-                    anki.fieldTemplates = null;
-                }
-            }
-            const server = anki.server;
-            if (typeof server === 'string' && server.length > 0 && !this._isLocalhostUrl(server)) {
-                warnings.push('anki.server uses a non-localhost URL');
-                if (!dryRun) {
-                    anki.server = 'http://127.0.0.1:8765';
-                }
-            }
-        }
-
-        const audio = options.audio;
-        if (isObject(audio)) {
-            const customSourceUrl = audio.customSourceUrl;
-            if (typeof customSourceUrl === 'string' && customSourceUrl.length > 0 && !this._isLocalhostUrl(customSourceUrl)) {
-                warnings.push('audio.customSourceUrl uses a non-localhost URL');
-                if (!dryRun) {
-                    audio.customSourceUrl = '';
-                }
-            }
-        }
-
-        return warnings;
-    }
-
-    _settingsImportSanitizeOptions(optionsFull, dryRun) {
-        const warnings = new Set();
-
-        const profiles = optionsFull.profiles;
-        if (Array.isArray(profiles)) {
-            for (const profile of profiles) {
-                if (!isObject(profile)) { continue; }
-                const options = profile.options;
-                if (!isObject(options)) { continue; }
-
-                const warnings2 = this._settingsImportSanitizeProfileOptions(options, dryRun);
-                for (const warning of warnings2) {
-                    warnings.add(warning);
-                }
-            }
-        }
-
-        return warnings;
-    }
-
-    _utf8Decode(arrayBuffer) {
-        try {
-            return new TextDecoder('utf-8').decode(arrayBuffer);
-        } catch (e) {
-            const binaryString = String.fromCharCode.apply(null, new Uint8Array(arrayBuffer));
-            return decodeURIComponent(escape(binaryString));
-        }
-    }
-
-    async _importSettingsFile(file) {
-        const dataString = this._utf8Decode(await this._readFileArrayBuffer(file));
-        const data = JSON.parse(dataString);
-
-        // Type check
-        if (!isObject(data)) {
-            throw new Error(`Invalid data type: ${typeof data}`);
-        }
-
-        // Version check
-        const version = data.version;
-        if (!(
-            typeof version === 'number' &&
-            Number.isFinite(version) &&
-            version === Math.floor(version)
-        )) {
-            throw new Error(`Invalid version: ${version}`);
-        }
-
-        if (!(
-            version >= 0 &&
-            version <= this._currentVersion
-        )) {
-            throw new Error(`Unsupported version: ${version}`);
-        }
-
-        // Verify options exists
-        let optionsFull = data.options;
-        if (!isObject(optionsFull)) {
-            throw new Error(`Invalid options type: ${typeof optionsFull}`);
-        }
-
-        // Upgrade options
-        optionsFull = await this._optionsUtil.update(optionsFull);
-
-        // Check for warnings
-        const sanitizationWarnings = this._settingsImportSanitizeOptions(optionsFull, true);
-
-        // Show sanitization warnings
-        if (sanitizationWarnings.size > 0) {
-            const {result, sanitize} = await this._showSettingsImportWarnings(sanitizationWarnings);
-            if (!result) { return; }
-
-            if (sanitize !== false) {
-                this._settingsImportSanitizeOptions(optionsFull, false);
-            }
-        }
-
-        // Assign options
-        await this._settingsImportSetOptionsFull(optionsFull);
-    }
-
-    _onSettingsImportClick() {
-        document.querySelector('#settings-import-file').click();
-    }
-
-    async _onSettingsImportFileChange(e) {
-        const files = e.target.files;
-        if (files.length === 0) { return; }
-
-        const file = files[0];
-        e.target.value = null;
-        try {
-            await this._importSettingsFile(file);
-        } catch (error) {
-            this._showSettingsImportError(error);
-        }
-    }
-
-    // Resetting
-
-    _onSettingsResetClick() {
-        this._settingsResetModal.setVisible(true);
-    }
-
-    async _onSettingsResetConfirmClick() {
-        this._settingsResetModal.setVisible(false);
-
-        // Get default options
-        const optionsFull = this._optionsUtil.getDefault();
-
-        // Update dictionaries
-        const dictionaries = await this._settingsController.getDictionaryInfo();
-        for (const {options: {dictionaries: optionsDictionaries}} of optionsFull.profiles) {
-            for (const {title} of dictionaries) {
-                optionsDictionaries[title] = DictionaryController.createDefaultDictionarySettings();
-            }
-        }
-
-        // Assign options
-        try {
-            await this._settingsImportSetOptionsFull(optionsFull);
-        } catch (e) {
-            yomichan.logError(e);
-        }
-    }
-}
diff --git a/ext/bg/js/settings/dictionary-controller.js b/ext/bg/js/settings/dictionary-controller.js
deleted file mode 100644
index ea9f7503..00000000
--- a/ext/bg/js/settings/dictionary-controller.js
+++ /dev/null
@@ -1,558 +0,0 @@
-/*
- * Copyright (C) 2020-2021  Yomichan Authors
- *
- * This program is free software: you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation, either version 3 of the License, or
- * (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program.  If not, see <https://www.gnu.org/licenses/>.
- */
-
-/* global
- * DictionaryDatabase
- * ObjectPropertyAccessor
- * api
- */
-
-class DictionaryEntry {
-    constructor(dictionaryController, node, dictionaryInfo) {
-        this._dictionaryController = dictionaryController;
-        this._node = node;
-        this._dictionaryInfo = dictionaryInfo;
-        this._eventListeners = new EventListenerCollection();
-        this._detailsContainer = null;
-        this._hasDetails = false;
-        this._hasCounts = false;
-    }
-
-    get node() {
-        return this._node;
-    }
-
-    get dictionaryTitle() {
-        return this._dictionaryInfo.title;
-    }
-
-    prepare() {
-        const node = this._node;
-        const {title, revision, prefixWildcardsSupported, version} = this._dictionaryInfo;
-
-        this._detailsContainer = node.querySelector('.dictionary-details');
-
-        const enabledCheckbox = node.querySelector('.dictionary-enabled');
-        const allowSecondarySearchesCheckbox = node.querySelector('.dictionary-allow-secondary-searches');
-        const priorityInput = node.querySelector('.dictionary-priority');
-        const deleteButton = node.querySelector('.dictionary-delete-button');
-        const menuButton = node.querySelector('.dictionary-menu-button');
-        const detailsTable = node.querySelector('.dictionary-details-table');
-        const detailsToggleLink = node.querySelector('.dictionary-details-toggle-link');
-        const outdatedContainer = node.querySelector('.dictionary-outdated-notification');
-        const titleNode = node.querySelector('.dictionary-title');
-        const versionNode = node.querySelector('.dictionary-version');
-        const wildcardSupportedCheckbox = node.querySelector('.dictionary-prefix-wildcard-searches-supported');
-
-        const hasDetails = (detailsTable !== null && this._setupDetails(detailsTable));
-        this._hasDetails = hasDetails;
-
-        titleNode.textContent = title;
-        versionNode.textContent = `rev.${revision}`;
-        if (wildcardSupportedCheckbox !== null) {
-            wildcardSupportedCheckbox.checked = !!prefixWildcardsSupported;
-        }
-        if (outdatedContainer !== null) {
-            outdatedContainer.hidden = (version >= 3);
-        }
-        if (detailsToggleLink !== null) {
-            detailsToggleLink.hidden = !hasDetails;
-        }
-        if (enabledCheckbox !== null) {
-            enabledCheckbox.dataset.setting = ObjectPropertyAccessor.getPathString(['dictionaries', title, 'enabled']);
-            this._eventListeners.addEventListener(enabledCheckbox, 'settingChanged', this._onEnabledChanged.bind(this), false);
-        }
-        if (priorityInput !== null) {
-            priorityInput.dataset.setting = ObjectPropertyAccessor.getPathString(['dictionaries', title, 'priority']);
-        }
-        if (allowSecondarySearchesCheckbox !== null) {
-            allowSecondarySearchesCheckbox.dataset.setting = ObjectPropertyAccessor.getPathString(['dictionaries', title, 'allowSecondarySearches']);
-        }
-        if (deleteButton !== null) {
-            this._eventListeners.addEventListener(deleteButton, 'click', this._onDeleteButtonClicked.bind(this), false);
-        }
-        if (menuButton !== null) {
-            this._eventListeners.addEventListener(menuButton, 'menuOpen', this._onMenuOpen.bind(this), false);
-            this._eventListeners.addEventListener(menuButton, 'menuClose', this._onMenuClose.bind(this), false);
-        }
-        if (detailsToggleLink !== null && this._detailsContainer !== null) {
-            this._eventListeners.addEventListener(detailsToggleLink, 'click', this._onDetailsToggleLinkClicked.bind(this), false);
-        }
-    }
-
-    cleanup() {
-        this._eventListeners.removeAllEventListeners();
-        const node = this._node;
-        if (node.parentNode !== null) {
-            node.parentNode.removeChild(node);
-        }
-    }
-
-    setCounts(counts) {
-        const node = this._node.querySelector('.dictionary-counts');
-        node.textContent = JSON.stringify({info: this._dictionaryInfo, counts}, null, 4);
-        node.hidden = false;
-        this._hasCounts = true;
-    }
-
-    // Private
-
-    _onDeleteButtonClicked(e) {
-        e.preventDefault();
-        this._delete();
-    }
-
-    _onMenuOpen(e) {
-        const bodyNode = e.detail.menu.bodyNode;
-        const showDetails = bodyNode.querySelector('.popup-menu-item[data-menu-action="showDetails"]');
-        const hideDetails = bodyNode.querySelector('.popup-menu-item[data-menu-action="hideDetails"]');
-        const hasDetails = (this._detailsContainer !== null);
-        const detailsVisible = (hasDetails && !this._detailsContainer.hidden);
-        if (showDetails !== null) {
-            showDetails.hidden = detailsVisible;
-            showDetails.disabled = !hasDetails;
-        }
-        if (hideDetails !== null) {
-            hideDetails.hidden = !detailsVisible;
-            hideDetails.disabled = !hasDetails;
-        }
-    }
-
-    _onMenuClose(e) {
-        switch (e.detail.action) {
-            case 'delete':
-                this._delete();
-                break;
-            case 'showDetails':
-                if (this._detailsContainer !== null) { this._detailsContainer.hidden = false; }
-                break;
-            case 'hideDetails':
-                if (this._detailsContainer !== null) { this._detailsContainer.hidden = true; }
-                break;
-        }
-    }
-
-    _onDetailsToggleLinkClicked(e) {
-        e.preventDefault();
-        this._detailsContainer.hidden = !this._detailsContainer.hidden;
-    }
-
-    _onEnabledChanged(e) {
-        const {detail: {value}} = e;
-        this._node.dataset.enabled = `${value}`;
-        this._dictionaryController.updateDictionariesEnabled();
-    }
-
-    _setupDetails(detailsTable) {
-        const targets = [
-            ['Author', 'author'],
-            ['URL', 'url'],
-            ['Description', 'description'],
-            ['Attribution', 'attribution']
-        ];
-
-        const dictionaryInfo = this._dictionaryInfo;
-        const fragment = document.createDocumentFragment();
-        let any = false;
-        for (const [label, key] of targets) {
-            const info = dictionaryInfo[key];
-            if (typeof info !== 'string') { continue; }
-
-            const details = this._dictionaryController.instantiateTemplate('dictionary-details-entry');
-            details.dataset.type = key;
-            details.querySelector('.dictionary-details-entry-label').textContent = `${label}:`;
-            details.querySelector('.dictionary-details-entry-info').textContent = info;
-            fragment.appendChild(details);
-
-            any = true;
-        }
-
-        detailsTable.appendChild(fragment);
-        return any;
-    }
-
-    _delete() {
-        this._dictionaryController.deleteDictionary(this.dictionaryTitle);
-    }
-}
-
-class DictionaryController {
-    constructor(settingsController, modalController, storageController, statusFooter) {
-        this._settingsController = settingsController;
-        this._modalController = modalController;
-        this._storageController = storageController;
-        this._statusFooter = statusFooter;
-        this._dictionaries = null;
-        this._dictionaryEntries = [];
-        this._databaseStateToken = null;
-        this._checkingIntegrity = false;
-        this._checkIntegrityButton = null;
-        this._dictionaryEntryContainer = null;
-        this._integrityExtraInfoContainer = null;
-        this._dictionaryInstallCountNode = null;
-        this._dictionaryEnabledCountNode = null;
-        this._noDictionariesInstalledWarnings = null;
-        this._noDictionariesEnabledWarnings = null;
-        this._deleteDictionaryModal = null;
-        this._integrityExtraInfoNode = null;
-        this._isDeleting = false;
-    }
-
-    async prepare() {
-        this._checkIntegrityButton = document.querySelector('#dictionary-check-integrity');
-        this._dictionaryEntryContainer = document.querySelector('#dictionary-list');
-        this._integrityExtraInfoContainer = document.querySelector('#dictionary-list-extra');
-        this._dictionaryInstallCountNode = document.querySelector('#dictionary-install-count');
-        this._dictionaryEnabledCountNode = document.querySelector('#dictionary-enabled-count');
-        this._noDictionariesInstalledWarnings = document.querySelectorAll('.no-dictionaries-installed-warning');
-        this._noDictionariesEnabledWarnings = document.querySelectorAll('.no-dictionaries-enabled-warning');
-        this._deleteDictionaryModal = this._modalController.getModal('dictionary-confirm-delete');
-
-        yomichan.on('databaseUpdated', this._onDatabaseUpdated.bind(this));
-        this._settingsController.on('optionsChanged', this._onOptionsChanged.bind(this));
-
-        document.querySelector('#dictionary-confirm-delete-button').addEventListener('click', this._onDictionaryConfirmDelete.bind(this), false);
-        if (this._checkIntegrityButton !== null) {
-            this._checkIntegrityButton.addEventListener('click', this._onCheckIntegrityButtonClick.bind(this), false);
-        }
-
-        await this._onDatabaseUpdated();
-    }
-
-    deleteDictionary(dictionaryTitle) {
-        if (this._isDeleting) { return; }
-        const modal = this._deleteDictionaryModal;
-        modal.node.dataset.dictionaryTitle = dictionaryTitle;
-        modal.node.querySelector('#dictionary-confirm-delete-name').textContent = dictionaryTitle;
-        modal.setVisible(true);
-    }
-
-    instantiateTemplate(name) {
-        return this._settingsController.instantiateTemplate(name);
-    }
-
-    async updateDictionariesEnabled() {
-        const options = await this._settingsController.getOptions();
-        this._updateDictionariesEnabledWarnings(options);
-    }
-
-    // Private
-
-    _onOptionsChanged({options}) {
-        this._updateDictionariesEnabledWarnings(options);
-    }
-
-    async _onDatabaseUpdated() {
-        const token = {};
-        this._databaseStateToken = token;
-        this._dictionaries = null;
-        const dictionaries = await this._settingsController.getDictionaryInfo();
-        const options = await this._settingsController.getOptions();
-        if (this._databaseStateToken !== token) { return; }
-        this._dictionaries = dictionaries;
-
-        this._updateMainDictionarySelectOptions(dictionaries);
-
-        for (const entry of this._dictionaryEntries) {
-            entry.cleanup();
-        }
-        this._dictionaryEntries = [];
-
-        if (this._dictionaryInstallCountNode !== null) {
-            this._dictionaryInstallCountNode.textContent = `${dictionaries.length}`;
-        }
-
-        const hasDictionary = (dictionaries.length > 0);
-        for (const node of this._noDictionariesInstalledWarnings) {
-            node.hidden = hasDictionary;
-        }
-
-        this._updateDictionariesEnabledWarnings(options);
-
-        await this._ensureDictionarySettings(dictionaries);
-        for (const dictionary of dictionaries) {
-            this._createDictionaryEntry(dictionary);
-        }
-    }
-
-    _updateDictionariesEnabledWarnings(options) {
-        let enabledCount = 0;
-        if (this._dictionaries !== null) {
-            for (const {title} of this._dictionaries) {
-                if (Object.prototype.hasOwnProperty.call(options.dictionaries, title)) {
-                    const {enabled} = options.dictionaries[title];
-                    if (enabled) {
-                        ++enabledCount;
-                    }
-                }
-            }
-        }
-
-        const hasEnabledDictionary = (enabledCount > 0);
-        for (const node of this._noDictionariesEnabledWarnings) {
-            node.hidden = hasEnabledDictionary;
-        }
-
-        if (this._dictionaryEnabledCountNode !== null) {
-            this._dictionaryEnabledCountNode.textContent = `${enabledCount}`;
-        }
-    }
-
-    _onDictionaryConfirmDelete(e) {
-        e.preventDefault();
-
-        const modal = this._deleteDictionaryModal;
-        modal.setVisible(false);
-
-        const title = modal.node.dataset.dictionaryTitle;
-        if (typeof title !== 'string') { return; }
-        delete modal.node.dataset.dictionaryTitle;
-
-        this._deleteDictionary(title);
-    }
-
-    _onCheckIntegrityButtonClick(e) {
-        e.preventDefault();
-        this._checkIntegrity();
-    }
-
-    _updateMainDictionarySelectOptions(dictionaries) {
-        for (const select of document.querySelectorAll('[data-setting="general.mainDictionary"]')) {
-            const fragment = document.createDocumentFragment();
-
-            let option = document.createElement('option');
-            option.className = 'text-muted';
-            option.value = '';
-            option.textContent = 'Not selected';
-            fragment.appendChild(option);
-
-            for (const {title, sequenced} of dictionaries) {
-                if (!sequenced) { continue; }
-                option = document.createElement('option');
-                option.value = title;
-                option.textContent = title;
-                fragment.appendChild(option);
-            }
-
-            select.textContent = ''; // Empty
-            select.appendChild(fragment);
-        }
-    }
-
-    async _checkIntegrity() {
-        if (this._dictionaries === null || this._checkingIntegrity || this._isDeleting) { return; }
-
-        try {
-            this._checkingIntegrity = true;
-            this._setButtonsEnabled(false);
-
-            const token = this._databaseStateToken;
-            const dictionaryTitles = this._dictionaries.map(({title}) => title);
-            const {counts, total} = await api.getDictionaryCounts(dictionaryTitles, true);
-            if (this._databaseStateToken !== token) { return; }
-
-            for (let i = 0, ii = Math.min(counts.length, this._dictionaryEntries.length); i < ii; ++i) {
-                const entry = this._dictionaryEntries[i];
-                entry.setCounts(counts[i]);
-            }
-
-            this._setCounts(counts, total);
-        } finally {
-            this._setButtonsEnabled(true);
-            this._checkingIntegrity = false;
-        }
-    }
-
-    _setCounts(dictionaryCounts, totalCounts) {
-        const remainders = Object.assign({}, totalCounts);
-        const keys = Object.keys(remainders);
-
-        for (const counts of dictionaryCounts) {
-            for (const key of keys) {
-                remainders[key] -= counts[key];
-            }
-        }
-
-        let totalRemainder = 0;
-        for (const key of keys) {
-            totalRemainder += remainders[key];
-        }
-
-        this._cleanupExtra();
-        if (totalRemainder > 0) {
-            this.extra = this._createExtra(totalCounts, remainders, totalRemainder);
-        }
-    }
-
-    _createExtra(totalCounts, remainders, totalRemainder) {
-        const node = this.instantiateTemplate('dictionary-extra');
-        this._integrityExtraInfoNode = node;
-
-        node.querySelector('.dictionary-total-count').textContent = `${totalRemainder} item${totalRemainder !== 1 ? 's' : ''}`;
-
-        const n = node.querySelector('.dictionary-counts');
-        n.textContent = JSON.stringify({counts: totalCounts, remainders}, null, 4);
-        n.hidden = false;
-
-        this._integrityExtraInfoContainer.appendChild(node);
-    }
-
-    _cleanupExtra() {
-        const node = this._integrityExtraInfoNode;
-        if (node === null) { return; }
-        this._integrityExtraInfoNode = null;
-
-        const parent = node.parentNode;
-        if (parent === null) { return; }
-
-        parent.removeChild(node);
-    }
-
-    _createDictionaryEntry(dictionary) {
-        const node = this.instantiateTemplate('dictionary');
-        this._dictionaryEntryContainer.appendChild(node);
-
-        const entry = new DictionaryEntry(this, node, dictionary);
-        this._dictionaryEntries.push(entry);
-        entry.prepare();
-    }
-
-    async _deleteDictionary(dictionaryTitle) {
-        if (this._isDeleting || this._checkingIntegrity) { return; }
-
-        const index = this._dictionaryEntries.findIndex((entry) => entry.dictionaryTitle === dictionaryTitle);
-        if (index < 0) { return; }
-
-        const storageController = this._storageController;
-        const statusFooter = this._statusFooter;
-        const {node} = this._dictionaryEntries[index];
-        const progressSelector = '.dictionary-delete-progress';
-        const progressContainers = [
-            ...node.querySelectorAll('.progress-container'),
-            ...document.querySelectorAll(`#dictionaries-modal ${progressSelector}`)
-        ];
-        const progressBars = [
-            ...node.querySelectorAll('.progress-bar'),
-            ...document.querySelectorAll(`${progressSelector} .progress-bar`)
-        ];
-        const infoLabels = document.querySelectorAll(`${progressSelector} .progress-info`);
-        const statusLabels = document.querySelectorAll(`${progressSelector} .progress-status`);
-        const prevention = this._settingsController.preventPageExit();
-        try {
-            this._isDeleting = true;
-            this._setButtonsEnabled(false);
-
-            const onProgress = ({processed, count, storeCount, storesProcesed}) => {
-                const percent = (
-                    (count > 0 && storesProcesed > 0) ?
-                    (processed / count) * (storesProcesed / storeCount) * 100.0 :
-                    0.0
-                );
-                const cssString = `${percent}%`;
-                const statusString = `${percent.toFixed(0)}%`;
-                for (const progressBar of progressBars) { progressBar.style.width = cssString; }
-                for (const label of statusLabels) { label.textContent = statusString; }
-            };
-
-            onProgress({processed: 0, count: 1, storeCount: 1, storesProcesed: 0});
-
-            for (const progress of progressContainers) { progress.hidden = false; }
-            for (const label of infoLabels) { label.textContent = 'Deleting dictionary...'; }
-            if (statusFooter !== null) { statusFooter.setTaskActive(progressSelector, true); }
-
-            await this._deleteDictionaryInternal(dictionaryTitle, onProgress);
-            await this._deleteDictionarySettings(dictionaryTitle);
-        } catch (e) {
-            yomichan.logError(e);
-        } finally {
-            prevention.end();
-            for (const progress of progressContainers) { progress.hidden = true; }
-            if (statusFooter !== null) { statusFooter.setTaskActive(progressSelector, false); }
-            this._setButtonsEnabled(true);
-            this._isDeleting = false;
-            if (storageController !== null) { storageController.updateStats(); }
-        }
-    }
-
-    _setButtonsEnabled(value) {
-        value = !value;
-        for (const node of document.querySelectorAll('.dictionary-database-mutating-input')) {
-            node.disabled = value;
-        }
-    }
-
-    async _deleteDictionaryInternal(dictionaryTitle, onProgress) {
-        const dictionaryDatabase = await this._getPreparedDictionaryDatabase();
-        try {
-            await dictionaryDatabase.deleteDictionary(dictionaryTitle, {rate: 1000}, onProgress);
-            api.triggerDatabaseUpdated('dictionary', 'delete');
-        } finally {
-            dictionaryDatabase.close();
-        }
-    }
-
-    async _getPreparedDictionaryDatabase() {
-        const dictionaryDatabase = new DictionaryDatabase();
-        await dictionaryDatabase.prepare();
-        return dictionaryDatabase;
-    }
-
-    async _deleteDictionarySettings(dictionaryTitle) {
-        const optionsFull = await this._settingsController.getOptionsFull();
-        const {profiles} = optionsFull;
-        const targets = [];
-        for (let i = 0, ii = profiles.length; i < ii; ++i) {
-            const {options: {dictionaries}} = profiles[i];
-            if (Object.prototype.hasOwnProperty.call(dictionaries, dictionaryTitle)) {
-                const path = ObjectPropertyAccessor.getPathString(['profiles', i, 'options', 'dictionaries', dictionaryTitle]);
-                targets.push({action: 'delete', path});
-            }
-        }
-        await this._settingsController.modifyGlobalSettings(targets);
-    }
-
-    async _ensureDictionarySettings(dictionaries2) {
-        const optionsFull = await this._settingsController.getOptionsFull();
-        const {profiles} = optionsFull;
-        const targets = [];
-        for (const {title} of dictionaries2) {
-            for (let i = 0, ii = profiles.length; i < ii; ++i) {
-                const {options: {dictionaries: dictionaryOptions}} = profiles[i];
-                if (Object.prototype.hasOwnProperty.call(dictionaryOptions, title)) { continue; }
-
-                const path = ObjectPropertyAccessor.getPathString(['profiles', i, 'options', 'dictionaries', title]);
-                targets.push({
-                    action: 'set',
-                    path,
-                    value: DictionaryController.createDefaultDictionarySettings()
-                });
-            }
-        }
-
-        if (targets.length > 0) {
-            await this._settingsController.modifyGlobalSettings(targets);
-        }
-    }
-
-    static createDefaultDictionarySettings() {
-        return {
-            enabled: false,
-            allowSecondarySearches: false,
-            priority: 0
-        };
-    }
-}
diff --git a/ext/bg/js/settings/dictionary-import-controller.js b/ext/bg/js/settings/dictionary-import-controller.js
deleted file mode 100644
index c4ad9e59..00000000
--- a/ext/bg/js/settings/dictionary-import-controller.js
+++ /dev/null
@@ -1,346 +0,0 @@
-/*
- * Copyright (C) 2020-2021  Yomichan Authors
- *
- * This program is free software: you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation, either version 3 of the License, or
- * (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program.  If not, see <https://www.gnu.org/licenses/>.
- */
-
-/* global
- * DictionaryDatabase
- * DictionaryImporter
- * ObjectPropertyAccessor
- * api
- */
-
-class DictionaryImportController {
-    constructor(settingsController, modalController, storageController, statusFooter) {
-        this._settingsController = settingsController;
-        this._modalController = modalController;
-        this._storageController = storageController;
-        this._statusFooter = statusFooter;
-        this._modifying = false;
-        this._purgeButton = null;
-        this._purgeConfirmButton = null;
-        this._importFileButton = null;
-        this._importFileInput = null;
-        this._purgeConfirmModal = null;
-        this._errorContainer = null;
-        this._spinner = null;
-        this._purgeNotification = null;
-        this._errorToStringOverrides = [
-            [
-                'A mutation operation was attempted on a database that did not allow mutations.',
-                'Access to IndexedDB appears to be restricted. Firefox seems to require that the history preference is set to "Remember history" before IndexedDB use of any kind is allowed.'
-            ],
-            [
-                'The operation failed for reasons unrelated to the database itself and not covered by any other error code.',
-                'Unable to access IndexedDB due to a possibly corrupt user profile. Try using the "Refresh Firefox" feature to reset your user profile.'
-            ]
-        ];
-    }
-
-    async prepare() {
-        this._purgeButton = document.querySelector('#dictionary-delete-all-button');
-        this._purgeConfirmButton = document.querySelector('#dictionary-confirm-delete-all-button');
-        this._importFileButton = document.querySelector('#dictionary-import-file-button');
-        this._importFileInput = document.querySelector('#dictionary-import-file-input');
-        this._purgeConfirmModal = this._modalController.getModal('dictionary-confirm-delete-all');
-        this._errorContainer = document.querySelector('#dictionary-error');
-        this._spinner = document.querySelector('#dictionary-spinner');
-        this._purgeNotification = document.querySelector('#dictionary-delete-all-status');
-
-        this._purgeButton.addEventListener('click', this._onPurgeButtonClick.bind(this), false);
-        this._purgeConfirmButton.addEventListener('click', this._onPurgeConfirmButtonClick.bind(this), false);
-        this._importFileButton.addEventListener('click', this._onImportButtonClick.bind(this), false);
-        this._importFileInput.addEventListener('change', this._onImportFileChange.bind(this), false);
-    }
-
-    // Private
-
-    _onImportButtonClick() {
-        this._importFileInput.click();
-    }
-
-    _onPurgeButtonClick(e) {
-        e.preventDefault();
-        this._purgeConfirmModal.setVisible(true);
-    }
-
-    _onPurgeConfirmButtonClick(e) {
-        e.preventDefault();
-        this._purgeConfirmModal.setVisible(false);
-        this._purgeDatabase();
-    }
-
-    _onImportFileChange(e) {
-        const node = e.currentTarget;
-        const files = [...node.files];
-        node.value = null;
-        this._importDictionaries(files);
-    }
-
-    async _purgeDatabase() {
-        if (this._modifying) { return; }
-
-        const purgeNotification = this._purgeNotification;
-        const storageController = this._storageController;
-        const prevention = this._preventPageExit();
-
-        try {
-            this._setModifying(true);
-            this._hideErrors();
-            this._setSpinnerVisible(true);
-            if (purgeNotification !== null) { purgeNotification.hidden = false; }
-
-            await api.purgeDatabase();
-            const errors = await this._clearDictionarySettings();
-
-            if (errors.length > 0) {
-                this._showErrors(errors);
-            }
-        } catch (error) {
-            this._showErrors([error]);
-        } finally {
-            prevention.end();
-            if (purgeNotification !== null) { purgeNotification.hidden = true; }
-            this._setSpinnerVisible(false);
-            this._setModifying(false);
-            if (storageController !== null) { storageController.updateStats(); }
-        }
-    }
-
-    async _importDictionaries(files) {
-        if (this._modifying) { return; }
-
-        const statusFooter = this._statusFooter;
-        const storageController = this._storageController;
-        const importInfo = document.querySelector('#dictionary-import-info');
-        const progressSelector = '.dictionary-import-progress';
-        const progressContainers = [
-            ...document.querySelectorAll('#dictionary-import-progress-container'),
-            ...document.querySelectorAll(`#dictionaries-modal ${progressSelector}`)
-        ];
-        const progressBars = [
-            ...document.querySelectorAll('#dictionary-import-progress-container .progress-bar'),
-            ...document.querySelectorAll(`${progressSelector} .progress-bar`)
-        ];
-        const infoLabels = document.querySelectorAll(`${progressSelector} .progress-info`);
-        const statusLabels = document.querySelectorAll(`${progressSelector} .progress-status`);
-
-        const prevention = this._preventPageExit();
-
-        try {
-            this._setModifying(true);
-            this._hideErrors();
-            this._setSpinnerVisible(true);
-
-            for (const progress of progressContainers) { progress.hidden = false; }
-
-            const optionsFull = await this._settingsController.getOptionsFull();
-            const importDetails = {
-                prefixWildcardsSupported: optionsFull.global.database.prefixWildcardsSupported
-            };
-
-            const onProgress = (total, current) => {
-                const percent = (current / total * 100.0);
-                const cssString = `${percent}%`;
-                const statusString = `${percent.toFixed(0)}%`;
-                for (const progressBar of progressBars) { progressBar.style.width = cssString; }
-                for (const label of statusLabels) { label.textContent = statusString; }
-                if (storageController !== null) { storageController.updateStats(); }
-            };
-
-            const fileCount = files.length;
-            for (let i = 0; i < fileCount; ++i) {
-                if (importInfo !== null && fileCount > 1) {
-                    importInfo.hidden = false;
-                    importInfo.textContent = `(${i + 1} of ${fileCount})`;
-                }
-
-                onProgress(1, 0);
-
-                const labelText = `Importing dictionary${fileCount > 1 ? ` (${i + 1} of ${fileCount})` : ''}...`;
-                for (const label of infoLabels) { label.textContent = labelText; }
-                if (statusFooter !== null) { statusFooter.setTaskActive(progressSelector, true); }
-
-                await this._importDictionary(files[i], importDetails, onProgress);
-            }
-        } catch (err) {
-            this._showErrors([err]);
-        } finally {
-            prevention.end();
-            for (const progress of progressContainers) { progress.hidden = true; }
-            if (statusFooter !== null) { statusFooter.setTaskActive(progressSelector, false); }
-            if (importInfo !== null) {
-                importInfo.textContent = '';
-                importInfo.hidden = true;
-            }
-            this._setSpinnerVisible(false);
-            this._setModifying(false);
-            if (storageController !== null) { storageController.updateStats(); }
-        }
-    }
-
-    async _importDictionary(file, importDetails, onProgress) {
-        const dictionaryDatabase = await this._getPreparedDictionaryDatabase();
-        try {
-            const dictionaryImporter = new DictionaryImporter();
-            const archiveContent = await this._readFile(file);
-            const {result, errors} = await dictionaryImporter.importDictionary(dictionaryDatabase, archiveContent, importDetails, onProgress);
-            api.triggerDatabaseUpdated('dictionary', 'import');
-            const errors2 = await this._addDictionarySettings(result.sequenced, result.title);
-
-            if (errors.length > 0) {
-                const allErrors = [...errors, ...errors2];
-                allErrors.push(new Error(`Dictionary may not have been imported properly: ${allErrors.length} error${allErrors.length === 1 ? '' : 's'} reported.`));
-                this._showErrors(allErrors);
-            }
-        } finally {
-            dictionaryDatabase.close();
-        }
-    }
-
-    async _addDictionarySettings(sequenced, title) {
-        const optionsFull = await this._settingsController.getOptionsFull();
-        const targets = [];
-        const profileCount = optionsFull.profiles.length;
-        for (let i = 0; i < profileCount; ++i) {
-            const {options} = optionsFull.profiles[i];
-            const value = this._createDictionaryOptions();
-            const path1 = ObjectPropertyAccessor.getPathString(['profiles', i, 'options', 'dictionaries', title]);
-            targets.push({action: 'set', path: path1, value});
-
-            if (sequenced && options.general.mainDictionary === '') {
-                const path2 = ObjectPropertyAccessor.getPathString(['profiles', i, 'options', 'general', 'mainDictionary']);
-                targets.push({action: 'set', path: path2, value: title});
-            }
-        }
-        return await this._modifyGlobalSettings(targets);
-    }
-
-    async _clearDictionarySettings() {
-        const optionsFull = await this._settingsController.getOptionsFull();
-        const targets = [];
-        const profileCount = optionsFull.profiles.length;
-        for (let i = 0; i < profileCount; ++i) {
-            const path1 = ObjectPropertyAccessor.getPathString(['profiles', i, 'options', 'dictionaries']);
-            targets.push({action: 'set', path: path1, value: {}});
-            const path2 = ObjectPropertyAccessor.getPathString(['profiles', i, 'options', 'general', 'mainDictionary']);
-            targets.push({action: 'set', path: path2, value: ''});
-        }
-        return await this._modifyGlobalSettings(targets);
-    }
-
-    _setSpinnerVisible(visible) {
-        if (this._spinner !== null) {
-            this._spinner.hidden = !visible;
-        }
-    }
-
-    _preventPageExit() {
-        return this._settingsController.preventPageExit();
-    }
-
-    _showErrors(errors) {
-        const uniqueErrors = new Map();
-        for (const error of errors) {
-            yomichan.logError(error);
-            const errorString = this._errorToString(error);
-            let count = uniqueErrors.get(errorString);
-            if (typeof count === 'undefined') {
-                count = 0;
-            }
-            uniqueErrors.set(errorString, count + 1);
-        }
-
-        const fragment = document.createDocumentFragment();
-        for (const [e, count] of uniqueErrors.entries()) {
-            const div = document.createElement('p');
-            if (count > 1) {
-                div.textContent = `${e} `;
-                const em = document.createElement('em');
-                em.textContent = `(${count})`;
-                div.appendChild(em);
-            } else {
-                div.textContent = `${e}`;
-            }
-            fragment.appendChild(div);
-        }
-
-        this._errorContainer.appendChild(fragment);
-        this._errorContainer.hidden = false;
-    }
-
-    _hideErrors() {
-        this._errorContainer.textContent = '';
-        this._errorContainer.hidden = true;
-    }
-
-    _readFile(file) {
-        return new Promise((resolve, reject) => {
-            const reader = new FileReader();
-            reader.onload = () => resolve(reader.result);
-            reader.onerror = () => reject(reader.error);
-            reader.readAsBinaryString(file);
-        });
-    }
-
-    _createDictionaryOptions() {
-        return {
-            priority: 0,
-            enabled: true,
-            allowSecondarySearches: false
-        };
-    }
-
-    _errorToString(error) {
-        error = (typeof error.toString === 'function' ? error.toString() : `${error}`);
-
-        for (const [match, newErrorString] of this._errorToStringOverrides) {
-            if (error.includes(match)) {
-                return newErrorString;
-            }
-        }
-
-        return error;
-    }
-
-    _setModifying(value) {
-        this._modifying = value;
-        this._setButtonsEnabled(!value);
-    }
-
-    _setButtonsEnabled(value) {
-        value = !value;
-        for (const node of document.querySelectorAll('.dictionary-database-mutating-input')) {
-            node.disabled = value;
-        }
-    }
-
-    async _getPreparedDictionaryDatabase() {
-        const dictionaryDatabase = new DictionaryDatabase();
-        await dictionaryDatabase.prepare();
-        return dictionaryDatabase;
-    }
-
-    async _modifyGlobalSettings(targets) {
-        const results = await this._settingsController.modifyGlobalSettings(targets);
-        const errors = [];
-        for (const {error} of results) {
-            if (typeof error !== 'undefined') {
-                errors.push(deserializeError(error));
-            }
-        }
-        return errors;
-    }
-}
diff --git a/ext/bg/js/settings/generic-setting-controller.js b/ext/bg/js/settings/generic-setting-controller.js
deleted file mode 100644
index 7d6fc2e6..00000000
--- a/ext/bg/js/settings/generic-setting-controller.js
+++ /dev/null
@@ -1,232 +0,0 @@
-/*
- * Copyright (C) 2020-2021  Yomichan Authors
- *
- * This program is free software: you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation, either version 3 of the License, or
- * (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program.  If not, see <https://www.gnu.org/licenses/>.
- */
-
-/* globals
- * DOMDataBinder
- */
-
-class GenericSettingController {
-    constructor(settingsController) {
-        this._settingsController = settingsController;
-        this._defaultScope = 'profile';
-        this._dataBinder = new DOMDataBinder({
-            selector: '[data-setting]',
-            createElementMetadata: this._createElementMetadata.bind(this),
-            compareElementMetadata: this._compareElementMetadata.bind(this),
-            getValues: this._getValues.bind(this),
-            setValues: this._setValues.bind(this)
-        });
-        this._transforms = new Map([
-            ['setAttribute', this._setAttribute.bind(this)],
-            ['setVisibility', this._setVisibility.bind(this)],
-            ['splitTags', this._splitTags.bind(this)],
-            ['joinTags', this._joinTags.bind(this)],
-            ['toNumber', this._toNumber.bind(this)],
-            ['toBoolean', this._toBoolean.bind(this)],
-            ['toString', this._toString.bind(this)],
-            ['conditionalConvert', this._conditionalConvert.bind(this)]
-        ]);
-    }
-
-    async prepare() {
-        this._dataBinder.observe(document.body);
-        this._settingsController.on('optionsChanged', this._onOptionsChanged.bind(this));
-    }
-
-    async refresh() {
-        await this._dataBinder.refresh();
-    }
-
-    // Private
-
-    _onOptionsChanged() {
-        this._dataBinder.refresh();
-    }
-
-    _createElementMetadata(element) {
-        const {dataset: {setting: path, scope, transform: transformRaw}} = element;
-        let transforms;
-        if (typeof transformRaw === 'string') {
-            transforms = JSON.parse(transformRaw);
-            if (!Array.isArray(transforms)) { transforms = [transforms]; }
-        } else {
-            transforms = [];
-        }
-        return {
-            path,
-            scope,
-            transforms,
-            transformRaw
-        };
-    }
-
-    _compareElementMetadata(metadata1, metadata2) {
-        return (
-            metadata1.path === metadata2.path &&
-            metadata1.scope === metadata2.scope &&
-            metadata1.transformRaw === metadata2.transformRaw
-        );
-    }
-
-    async _getValues(targets) {
-        const defaultScope = this._defaultScope;
-        const settingsTargets = [];
-        for (const {metadata: {path, scope}} of targets) {
-            const target = {
-                path,
-                scope: scope || defaultScope
-            };
-            settingsTargets.push(target);
-        }
-        return this._transformResults(await this._settingsController.getSettings(settingsTargets), targets);
-    }
-
-    async _setValues(targets) {
-        const defaultScope = this._defaultScope;
-        const settingsTargets = [];
-        for (const {metadata: {path, scope, transforms}, value, element} of targets) {
-            const transformedValue = this._applyTransforms(value, transforms, 'pre', element);
-            const target = {
-                path,
-                scope: scope || defaultScope,
-                action: 'set',
-                value: transformedValue
-            };
-            settingsTargets.push(target);
-        }
-        return this._transformResults(await this._settingsController.modifySettings(settingsTargets), targets);
-    }
-
-    _transformResults(values, targets) {
-        return values.map((value, i) => {
-            const error = value.error;
-            if (error) { return deserializeError(error); }
-            const {metadata: {transforms}, element} = targets[i];
-            const result = this._applyTransforms(value.result, transforms, 'post', element);
-            return {result};
-        });
-    }
-
-    _applyTransforms(value, transforms, step, element) {
-        for (const transform of transforms) {
-            const transformStep = transform.step;
-            if (typeof transformStep !== 'undefined' && transformStep !== step) { continue; }
-
-            const transformFunction = this._transforms.get(transform.type);
-            if (typeof transformFunction === 'undefined') { continue; }
-
-            value = transformFunction(value, transform, element);
-        }
-        return value;
-    }
-
-    _getAncestor(node, ancestorDistance) {
-        if (ancestorDistance < 0) {
-            return document.documentElement;
-        }
-        for (let i = 0; i < ancestorDistance && node !== null; ++i) {
-            node = node.parentNode;
-        }
-        return node;
-    }
-
-    _getRelativeElement(node, ancestorDistance, selector) {
-        const selectorRoot = (
-            typeof ancestorDistance === 'number' ?
-            this._getAncestor(node, ancestorDistance) :
-            document
-        );
-        if (selectorRoot === null) { return null; }
-
-        return (
-            typeof selector === 'string' ?
-            selectorRoot.querySelector(selector) :
-            (selectorRoot === document ? document.documentElement : selectorRoot)
-        );
-    }
-
-    _evaluateSimpleOperation(operation, lhs, rhs) {
-        switch (operation) {
-            case '!': return !lhs;
-            case '!!': return !!lhs;
-            case '===': return lhs === rhs;
-            case '!==': return lhs !== rhs;
-            case '>=': return lhs >= rhs;
-            case '<=': return lhs <= rhs;
-            case '>': return lhs > rhs;
-            case '<': return lhs < rhs;
-            default: return false;
-        }
-    }
-
-    // Transforms
-
-    _setAttribute(value, data, element) {
-        const {ancestorDistance, selector, attribute} = data;
-        const relativeElement = this._getRelativeElement(element, ancestorDistance, selector);
-        if (relativeElement !== null) {
-            relativeElement.setAttribute(attribute, `${value}`);
-        }
-        return value;
-    }
-
-    _setVisibility(value, data, element) {
-        const {ancestorDistance, selector, condition} = data;
-        const relativeElement = this._getRelativeElement(element, ancestorDistance, selector);
-        if (relativeElement !== null) {
-            relativeElement.hidden = !this._evaluateSimpleOperation(condition.op, value, condition.value);
-        }
-        return value;
-    }
-
-    _splitTags(value) {
-        return `${value}`.split(/[,; ]+/).filter((v) => !!v);
-    }
-
-    _joinTags(value) {
-        return value.join(' ');
-    }
-
-    _toNumber(value, data) {
-        let {constraints} = data;
-        if (!isObject(constraints)) { constraints = {}; }
-        return DOMDataBinder.convertToNumber(value, constraints);
-    }
-
-    _toBoolean(value) {
-        return (value === 'true');
-    }
-
-    _toString(value) {
-        return `${value}`;
-    }
-
-    _conditionalConvert(value, data) {
-        const {cases} = data;
-        if (Array.isArray(cases)) {
-            for (const {op, value: value2, default: isDefault, result} of cases) {
-                if (isDefault === true) {
-                    value = result;
-                } else if (this._evaluateSimpleOperation(op, value, value2)) {
-                    value = result;
-                    break;
-                }
-            }
-        }
-        return value;
-    }
-}
diff --git a/ext/bg/js/settings/keyboard-mouse-input-field.js b/ext/bg/js/settings/keyboard-mouse-input-field.js
deleted file mode 100644
index 09477519..00000000
--- a/ext/bg/js/settings/keyboard-mouse-input-field.js
+++ /dev/null
@@ -1,243 +0,0 @@
-/*
- * Copyright (C) 2020-2021  Yomichan Authors
- *
- * This program is free software: you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation, either version 3 of the License, or
- * (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program.  If not, see <https://www.gnu.org/licenses/>.
- */
-
-/* global
- * DocumentUtil
- * HotkeyUtil
- */
-
-class KeyboardMouseInputField extends EventDispatcher {
-    constructor(inputNode, mouseButton, os, isPointerTypeSupported=null) {
-        super();
-        this._inputNode = inputNode;
-        this._mouseButton = mouseButton;
-        this._isPointerTypeSupported = isPointerTypeSupported;
-        this._hotkeyUtil = new HotkeyUtil(os);
-        this._eventListeners = new EventListenerCollection();
-        this._key = null;
-        this._modifiers = [];
-        this._penPointerIds = new Set();
-        this._mouseModifiersSupported = false;
-        this._keySupported = false;
-    }
-
-    get modifiers() {
-        return this._modifiers;
-    }
-
-    prepare(key, modifiers, mouseModifiersSupported=false, keySupported=false) {
-        this.cleanup();
-
-        this._mouseModifiersSupported = mouseModifiersSupported;
-        this._keySupported = keySupported;
-        this.setInput(key, modifiers);
-        const events = [
-            [this._inputNode, 'keydown', this._onModifierKeyDown.bind(this), false],
-            [this._inputNode, 'keyup', this._onModifierKeyUp.bind(this), false]
-        ];
-        if (mouseModifiersSupported && this._mouseButton !== null) {
-            events.push(
-                [this._mouseButton, 'mousedown', this._onMouseButtonMouseDown.bind(this), false],
-                [this._mouseButton, 'pointerdown', this._onMouseButtonPointerDown.bind(this), false],
-                [this._mouseButton, 'pointerover', this._onMouseButtonPointerOver.bind(this), false],
-                [this._mouseButton, 'pointerout', this._onMouseButtonPointerOut.bind(this), false],
-                [this._mouseButton, 'pointercancel', this._onMouseButtonPointerCancel.bind(this), false],
-                [this._mouseButton, 'mouseup', this._onMouseButtonMouseUp.bind(this), false],
-                [this._mouseButton, 'contextmenu', this._onMouseButtonContextMenu.bind(this), false]
-            );
-        }
-        for (const args of events) {
-            this._eventListeners.addEventListener(...args);
-        }
-    }
-
-    setInput(key, modifiers) {
-        this._key = key;
-        this._modifiers = this._sortModifiers(modifiers);
-        this._updateDisplayString();
-    }
-
-    cleanup() {
-        this._eventListeners.removeAllEventListeners();
-        this._modifiers = [];
-        this._key = null;
-        this._mouseModifiersSupported = false;
-        this._keySupported = false;
-        this._penPointerIds.clear();
-    }
-
-    clearInputs() {
-        this._updateModifiers([], null);
-    }
-
-    // Private
-
-    _sortModifiers(modifiers) {
-        return this._hotkeyUtil.sortModifiers(modifiers);
-    }
-
-    _updateDisplayString() {
-        const displayValue = this._hotkeyUtil.getInputDisplayValue(this._key, this._modifiers);
-        this._inputNode.value = displayValue;
-    }
-
-    _getModifierKeys(e) {
-        const modifiers = new Set(DocumentUtil.getActiveModifiers(e));
-        // https://developer.mozilla.org/en-US/docs/Web/API/KeyboardEvent/metaKey
-        // https://askubuntu.com/questions/567731/why-is-shift-alt-being-mapped-to-meta
-        // It works with mouse events on some platforms, so try to determine if metaKey is pressed.
-        // This is a hack and only works when both Shift and Alt are not pressed.
-        if (
-            !modifiers.has('meta') &&
-            e.key === 'Meta' &&
-            !(
-                modifiers.size === 2 &&
-                modifiers.has('shift') &&
-                modifiers.has('alt')
-            )
-        ) {
-            modifiers.add('meta');
-        }
-        return modifiers;
-    }
-
-    _isModifierKey(keyName) {
-        switch (keyName) {
-            case 'AltLeft':
-            case 'AltRight':
-            case 'ControlLeft':
-            case 'ControlRight':
-            case 'MetaLeft':
-            case 'MetaRight':
-            case 'ShiftLeft':
-            case 'ShiftRight':
-            case 'OSLeft':
-            case 'OSRight':
-                return true;
-            default:
-                return false;
-        }
-    }
-
-    _onModifierKeyDown(e) {
-        e.preventDefault();
-
-        let key = e.code;
-        if (key === 'Unidentified' || key === '') { key = void 0; }
-        if (this._keySupported) {
-            this._updateModifiers([...this._getModifierKeys(e)], this._isModifierKey(key) ? void 0 : key);
-        } else {
-            switch (key) {
-                case 'Escape':
-                case 'Backspace':
-                    this.clearInputs();
-                    break;
-                default:
-                    this._addModifiers(this._getModifierKeys(e));
-                    break;
-            }
-        }
-    }
-
-    _onModifierKeyUp(e) {
-        e.preventDefault();
-    }
-
-    _onMouseButtonMouseDown(e) {
-        e.preventDefault();
-        this._addModifiers(DocumentUtil.getActiveButtons(e));
-    }
-
-    _onMouseButtonPointerDown(e) {
-        if (!e.isPrimary) { return; }
-
-        let {pointerType, pointerId} = e;
-        // Workaround for Firefox bug not detecting certain 'touch' events as 'pen' events.
-        if (this._penPointerIds.has(pointerId)) { pointerType = 'pen'; }
-
-        if (
-            typeof this._isPointerTypeSupported !== 'function' ||
-            !this._isPointerTypeSupported(pointerType)
-        ) {
-            return;
-        }
-        e.preventDefault();
-        this._addModifiers(DocumentUtil.getActiveButtons(e));
-    }
-
-    _onMouseButtonPointerOver(e) {
-        const {pointerType, pointerId} = e;
-        if (pointerType === 'pen') {
-            this._penPointerIds.add(pointerId);
-        }
-    }
-
-    _onMouseButtonPointerOut(e) {
-        const {pointerId} = e;
-        this._penPointerIds.delete(pointerId);
-    }
-
-    _onMouseButtonPointerCancel(e) {
-        this._onMouseButtonPointerOut(e);
-    }
-
-    _onMouseButtonMouseUp(e) {
-        e.preventDefault();
-    }
-
-    _onMouseButtonContextMenu(e) {
-        e.preventDefault();
-    }
-
-    _addModifiers(newModifiers, newKey) {
-        const modifiers = new Set(this._modifiers);
-        for (const modifier of newModifiers) {
-            modifiers.add(modifier);
-        }
-        this._updateModifiers([...modifiers], newKey);
-    }
-
-    _updateModifiers(modifiers, newKey) {
-        modifiers = this._sortModifiers(modifiers);
-
-        let changed = false;
-        if (typeof newKey !== 'undefined' && this._key !== newKey) {
-            this._key = newKey;
-            changed = true;
-        }
-        if (!this._areArraysEqual(this._modifiers, modifiers)) {
-            this._modifiers = modifiers;
-            changed = true;
-        }
-
-        this._updateDisplayString();
-        if (changed) {
-            this.trigger('change', {modifiers: this._modifiers, key: this._key});
-        }
-    }
-
-    _areArraysEqual(array1, array2) {
-        const length = array1.length;
-        if (length !== array2.length) { return false; }
-
-        for (let i = 0; i < length; ++i) {
-            if (array1[i] !== array2[i]) { return false; }
-        }
-
-        return true;
-    }
-}
diff --git a/ext/bg/js/settings/main.js b/ext/bg/js/settings/main.js
deleted file mode 100644
index 9786d196..00000000
--- a/ext/bg/js/settings/main.js
+++ /dev/null
@@ -1,111 +0,0 @@
-/*
- * Copyright (C) 2016-2021  Yomichan Authors
- *
- * This program is free software: you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation, either version 3 of the License, or
- * (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program.  If not, see <https://www.gnu.org/licenses/>.
- */
-
-/* global
- * AnkiController
- * AnkiTemplatesController
- * AudioController
- * BackupController
- * DictionaryController
- * DictionaryImportController
- * GenericSettingController
- * ModalController
- * PermissionsToggleController
- * PopupPreviewController
- * ProfileController
- * ScanInputsController
- * ScanInputsSimpleController
- * SettingsController
- * StorageController
- * api
- */
-
-function showExtensionInformation() {
-    const node = document.getElementById('extension-info');
-    if (node === null) { return; }
-
-    const manifest = chrome.runtime.getManifest();
-    node.textContent = `${manifest.name} v${manifest.version}`;
-}
-
-async function setupEnvironmentInfo() {
-    const {browser, platform} = await api.getEnvironmentInfo();
-    document.documentElement.dataset.browser = browser;
-    document.documentElement.dataset.operatingSystem = platform.os;
-}
-
-
-(async () => {
-    try {
-        api.forwardLogsToBackend();
-        await yomichan.backendReady();
-
-        setupEnvironmentInfo();
-        showExtensionInformation();
-
-        const optionsFull = await api.optionsGetFull();
-
-        const modalController = new ModalController();
-        modalController.prepare();
-
-        const settingsController = new SettingsController(optionsFull.profileCurrent);
-        settingsController.prepare();
-
-        const storageController = new StorageController();
-        storageController.prepare();
-
-        const genericSettingController = new GenericSettingController(settingsController);
-        genericSettingController.prepare();
-
-        const permissionsToggleController = new PermissionsToggleController(settingsController);
-        permissionsToggleController.prepare();
-
-        const popupPreviewController = new PopupPreviewController(settingsController);
-        popupPreviewController.prepare();
-
-        const audioController = new AudioController(settingsController);
-        audioController.prepare();
-
-        const profileController = new ProfileController(settingsController, modalController);
-        profileController.prepare();
-
-        const dictionaryController = new DictionaryController(settingsController, modalController, storageController, null);
-        dictionaryController.prepare();
-
-        const dictionaryImportController = new DictionaryImportController(settingsController, modalController, storageController, null);
-        dictionaryImportController.prepare();
-
-        const ankiController = new AnkiController(settingsController);
-        ankiController.prepare();
-
-        const ankiTemplatesController = new AnkiTemplatesController(settingsController, modalController, ankiController);
-        ankiTemplatesController.prepare();
-
-        const settingsBackup = new BackupController(settingsController, modalController);
-        settingsBackup.prepare();
-
-        const scanInputsController = new ScanInputsController(settingsController);
-        scanInputsController.prepare();
-
-        const simpleScanningInputController = new ScanInputsSimpleController(settingsController);
-        simpleScanningInputController.prepare();
-
-        yomichan.ready();
-    } catch (e) {
-        yomichan.logError(e);
-    }
-})();
diff --git a/ext/bg/js/settings/modal-controller.js b/ext/bg/js/settings/modal-controller.js
deleted file mode 100644
index fe4f911b..00000000
--- a/ext/bg/js/settings/modal-controller.js
+++ /dev/null
@@ -1,60 +0,0 @@
-/*
- * Copyright (C) 2020-2021  Yomichan Authors
- *
- * This program is free software: you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation, either version 3 of the License, or
- * (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program.  If not, see <https://www.gnu.org/licenses/>.
- */
-
-/* global
- * Modal
- */
-
-class ModalController {
-    constructor() {
-        this._modals = [];
-        this._modalMap = new Map();
-    }
-
-    prepare() {
-        const idSuffix = '-modal';
-        for (const node of document.querySelectorAll('.modal')) {
-            let {id} = node;
-            if (typeof id !== 'string') { continue; }
-
-            if (id.endsWith(idSuffix)) {
-                id = id.substring(0, id.length - idSuffix.length);
-            }
-
-            const modal = new Modal(node);
-            modal.prepare();
-            this._modalMap.set(id, modal);
-            this._modalMap.set(node, modal);
-            this._modals.push(modal);
-        }
-    }
-
-    getModal(nameOrNode) {
-        const modal = this._modalMap.get(nameOrNode);
-        return (typeof modal !== 'undefined' ? modal : null);
-    }
-
-    getTopVisibleModal() {
-        for (let i = this._modals.length - 1; i >= 0; --i) {
-            const modal = this._modals[i];
-            if (modal.isVisible()) {
-                return modal;
-            }
-        }
-        return null;
-    }
-}
diff --git a/ext/bg/js/settings/modal-jquery.js b/ext/bg/js/settings/modal-jquery.js
deleted file mode 100644
index 8c69ae6d..00000000
--- a/ext/bg/js/settings/modal-jquery.js
+++ /dev/null
@@ -1,73 +0,0 @@
-/*
- * Copyright (C) 2020-2021  Yomichan Authors
- *
- * This program is free software: you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation, either version 3 of the License, or
- * (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program.  If not, see <https://www.gnu.org/licenses/>.
- */
-
-class Modal extends EventDispatcher {
-    constructor(node) {
-        super();
-        this._node = node;
-        this._eventListeners = new EventListenerCollection();
-    }
-
-    get node() {
-        return this._node;
-    }
-
-    prepare() {
-        // NOP
-    }
-
-    isVisible() {
-        return !!(this._getWrappedNode().data('bs.modal') || {}).isShown;
-    }
-
-    setVisible(value) {
-        this._getWrappedNode().modal(value ? 'show' : 'hide');
-    }
-
-    on(eventName, callback) {
-        if (eventName === 'visibilityChanged') {
-            if (this._eventListeners.size === 0) {
-                const wrappedNode = this._getWrappedNode();
-                this._eventListeners.on(wrappedNode, 'hidden.bs.modal', this._onModalHide.bind(this));
-                this._eventListeners.on(wrappedNode, 'shown.bs.modal', this._onModalShow.bind(this));
-            }
-        }
-        return super.on(eventName, callback);
-    }
-
-    off(eventName, callback) {
-        const result = super.off(eventName, callback);
-        if (eventName === 'visibilityChanged' && !this.hasListeners(eventName)) {
-            this._eventListeners.removeAllEventListeners();
-        }
-        return result;
-    }
-
-    // Private
-
-    _onModalHide() {
-        this.trigger('visibilityChanged', {visible: false});
-    }
-
-    _onModalShow() {
-        this.trigger('visibilityChanged', {visible: true});
-    }
-
-    _getWrappedNode() {
-        return $(this._node);
-    }
-}
diff --git a/ext/bg/js/settings/modal.js b/ext/bg/js/settings/modal.js
deleted file mode 100644
index 2ef49540..00000000
--- a/ext/bg/js/settings/modal.js
+++ /dev/null
@@ -1,80 +0,0 @@
-/*
- * Copyright (C) 2020-2021  Yomichan Authors
- *
- * This program is free software: you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation, either version 3 of the License, or
- * (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program.  If not, see <https://www.gnu.org/licenses/>.
- */
-
-/* global
- * PanelElement
- */
-
-class Modal extends PanelElement {
-    constructor(node) {
-        super({
-            node,
-            closingAnimationDuration: 375 // Milliseconds; includes buffer
-        });
-        this._contentNode = null;
-        this._canCloseOnClick = false;
-    }
-
-    prepare() {
-        const node = this.node;
-        this._contentNode = node.querySelector('.modal-content');
-        let dimmerNode = node.querySelector('.modal-content-dimmer');
-        if (dimmerNode === null) { dimmerNode = node; }
-        dimmerNode.addEventListener('mousedown', this._onModalContainerMouseDown.bind(this), false);
-        dimmerNode.addEventListener('mouseup', this._onModalContainerMouseUp.bind(this), false);
-        dimmerNode.addEventListener('click', this._onModalContainerClick.bind(this), false);
-
-        for (const actionNode of node.querySelectorAll('[data-modal-action]')) {
-            actionNode.addEventListener('click', this._onActionNodeClick.bind(this), false);
-        }
-    }
-
-    // Private
-
-    _onModalContainerMouseDown(e) {
-        this._canCloseOnClick = (e.currentTarget === e.target);
-    }
-
-    _onModalContainerMouseUp(e) {
-        if (!this._canCloseOnClick) { return; }
-        this._canCloseOnClick = (e.currentTarget === e.target);
-    }
-
-    _onModalContainerClick(e) {
-        if (!this._canCloseOnClick) { return; }
-        this._canCloseOnClick = false;
-        if (e.currentTarget !== e.target) { return; }
-        this.setVisible(false);
-    }
-
-    _onActionNodeClick(e) {
-        const {modalAction} = e.currentTarget.dataset;
-        switch (modalAction) {
-            case 'expand':
-                this._setExpanded(true);
-                break;
-            case 'collapse':
-                this._setExpanded(false);
-                break;
-        }
-    }
-
-    _setExpanded(expanded) {
-        if (this._contentNode === null) { return; }
-        this._contentNode.classList.toggle('modal-content-full', expanded);
-    }
-}
diff --git a/ext/bg/js/settings/permissions-toggle-controller.js b/ext/bg/js/settings/permissions-toggle-controller.js
deleted file mode 100644
index f80e7585..00000000
--- a/ext/bg/js/settings/permissions-toggle-controller.js
+++ /dev/null
@@ -1,131 +0,0 @@
-/*
- * Copyright (C) 2020-2021  Yomichan Authors
- *
- * This program is free software: you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation, either version 3 of the License, or
- * (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program.  If not, see <https://www.gnu.org/licenses/>.
- */
-
-/* global
- * ObjectPropertyAccessor
- */
-
-class PermissionsToggleController {
-    constructor(settingsController) {
-        this._settingsController = settingsController;
-        this._toggles = null;
-    }
-
-    async prepare() {
-        this._toggles = document.querySelectorAll('.permissions-toggle');
-
-        for (const toggle of this._toggles) {
-            toggle.addEventListener('change', this._onPermissionsToggleChange.bind(this), false);
-        }
-        this._settingsController.on('optionsChanged', this._onOptionsChanged.bind(this));
-        this._settingsController.on('permissionsChanged', this._onPermissionsChanged.bind(this));
-
-        const options = await this._settingsController.getOptions();
-        this._onOptionsChanged({options});
-    }
-
-    // Private
-
-    _onOptionsChanged({options}) {
-        let accessor = null;
-        for (const toggle of this._toggles) {
-            const {permissionsSetting} = toggle.dataset;
-            if (typeof permissionsSetting !== 'string') { continue; }
-
-            if (accessor === null) {
-                accessor = new ObjectPropertyAccessor(options);
-            }
-
-            const path = ObjectPropertyAccessor.getPathArray(permissionsSetting);
-            let value;
-            try {
-                value = accessor.get(path, path.length);
-            } catch (e) {
-                continue;
-            }
-            toggle.checked = !!value;
-        }
-        this._updateValidity();
-    }
-
-    async _onPermissionsToggleChange(e) {
-        const toggle = e.currentTarget;
-        let value = toggle.checked;
-        const valuePre = !value;
-        const {permissionsSetting} = toggle.dataset;
-        const hasPermissionsSetting = typeof permissionsSetting === 'string';
-
-        if (value || !hasPermissionsSetting) {
-            toggle.checked = valuePre;
-            const permissions = this._getRequiredPermissions(toggle);
-            try {
-                value = await this._settingsController.permissionsUtil.setPermissionsGranted({permissions}, value);
-            } catch (error) {
-                value = valuePre;
-                try {
-                    value = await this._settingsController.permissionsUtil.hasPermissions({permissions});
-                } catch (error2) {
-                    // NOP
-                }
-            }
-            toggle.checked = value;
-        }
-
-        if (hasPermissionsSetting) {
-            this._setToggleValid(toggle, true);
-            await this._settingsController.setProfileSetting(permissionsSetting, value);
-        }
-    }
-
-    _onPermissionsChanged({permissions: {permissions}}) {
-        const permissionsSet = new Set(permissions);
-        for (const toggle of this._toggles) {
-            const {permissionsSetting} = toggle.dataset;
-            const hasPermissions = this._hasAll(permissionsSet, this._getRequiredPermissions(toggle));
-
-            if (typeof permissionsSetting === 'string') {
-                const valid = !toggle.checked || hasPermissions;
-                this._setToggleValid(toggle, valid);
-            } else {
-                toggle.checked = hasPermissions;
-            }
-        }
-    }
-
-    _setToggleValid(toggle, valid) {
-        const relative = toggle.closest('.settings-item');
-        if (relative === null) { return; }
-        relative.dataset.invalid = `${!valid}`;
-    }
-
-    async _updateValidity() {
-        const permissions = await this._settingsController.permissionsUtil.getAllPermissions();
-        this._onPermissionsChanged({permissions});
-    }
-
-    _hasAll(set, values) {
-        for (const value of values) {
-            if (!set.has(value)) { return false; }
-        }
-        return true;
-    }
-
-    _getRequiredPermissions(toggle) {
-        const requiredPermissions = toggle.dataset.requiredPermissions;
-        return (typeof requiredPermissions === 'string' && requiredPermissions.length > 0 ? requiredPermissions.split(' ') : []);
-    }
-}
diff --git a/ext/bg/js/settings/pitch-accents-preview-main.js b/ext/bg/js/settings/pitch-accents-preview-main.js
deleted file mode 100644
index f292170a..00000000
--- a/ext/bg/js/settings/pitch-accents-preview-main.js
+++ /dev/null
@@ -1,33 +0,0 @@
-/*
- * Copyright (C) 2019-2021  Yomichan Authors
- *
- * This program is free software: you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation, either version 3 of the License, or
- * (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program.  If not, see <https://www.gnu.org/licenses/>.
- */
-
-/* global
- * DisplayGenerator
- */
-
-(async () => {
-    try {
-        const displayGenerator = new DisplayGenerator({
-            japaneseUtil: null,
-            mediaLoader: null
-        });
-        await displayGenerator.prepare();
-        displayGenerator.preparePitchAccents();
-    } catch (e) {
-        yomichan.logError(e);
-    }
-})();
diff --git a/ext/bg/js/settings/popup-preview-controller.js b/ext/bg/js/settings/popup-preview-controller.js
deleted file mode 100644
index f98b0679..00000000
--- a/ext/bg/js/settings/popup-preview-controller.js
+++ /dev/null
@@ -1,129 +0,0 @@
-/*
- * Copyright (C) 2019-2021  Yomichan Authors
- *
- * This program is free software: you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation, either version 3 of the License, or
- * (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program.  If not, see <https://www.gnu.org/licenses/>.
- */
-
-/* global
- * wanakana
- */
-
-class PopupPreviewController {
-    constructor(settingsController) {
-        this._settingsController = settingsController;
-        this._previewVisible = false;
-        this._targetOrigin = chrome.runtime.getURL('/').replace(/\/$/, '');
-        this._frame = null;
-        this._previewTextInput = null;
-        this._customCss = null;
-        this._customOuterCss = null;
-        this._previewFrameContainer = null;
-    }
-
-    async prepare() {
-        const button = document.querySelector('#settings-popup-preview-button');
-        if (button !== null) {
-            button.addEventListener('click', this._onShowPopupPreviewButtonClick.bind(this), false);
-        } else {
-            this._frame = document.querySelector('#popup-preview-frame');
-            this._customCss = document.querySelector('#custom-popup-css');
-            this._customOuterCss = document.querySelector('#custom-popup-outer-css');
-            this._previewFrameContainer = document.querySelector('.preview-frame-container');
-
-            this._customCss.addEventListener('input', this._onCustomCssChange.bind(this), false);
-            this._customCss.addEventListener('settingChanged', this._onCustomCssChange.bind(this), false);
-            this._customOuterCss.addEventListener('input', this._onCustomOuterCssChange.bind(this), false);
-            this._customOuterCss.addEventListener('settingChanged', this._onCustomOuterCssChange.bind(this), false);
-            this._frame.addEventListener('load', this._onFrameLoad2.bind(this), false);
-            this._settingsController.on('optionsContextChanged', this._onOptionsContextChange.bind(this));
-        }
-    }
-
-    // Private
-
-    _onShowPopupPreviewButtonClick() {
-        if (this._previewVisible) { return; }
-        this._showAppearancePreview();
-        this._previewVisible = true;
-    }
-
-    _showAppearancePreview() {
-        const container = document.querySelector('#settings-popup-preview-container');
-        const buttonContainer = document.querySelector('#settings-popup-preview-button-container');
-        const settings = document.querySelector('#settings-popup-preview-settings');
-        const text = document.querySelector('#settings-popup-preview-text');
-        const customCss = document.querySelector('#custom-popup-css');
-        const customOuterCss = document.querySelector('#custom-popup-outer-css');
-        const frame = document.createElement('iframe');
-
-        this._previewTextInput = text;
-        this._frame = frame;
-        this._customCss = customCss;
-        this._customOuterCss = customOuterCss;
-
-        wanakana.bind(text);
-
-        frame.addEventListener('load', this._onFrameLoad.bind(this), false);
-        text.addEventListener('input', this._onTextChange.bind(this), false);
-        customCss.addEventListener('input', this._onCustomCssChange.bind(this), false);
-        customOuterCss.addEventListener('input', this._onCustomOuterCssChange.bind(this), false);
-        this._settingsController.on('optionsContextChanged', this._onOptionsContextChange.bind(this));
-
-        frame.src = '/popup-preview.html';
-        frame.id = 'settings-popup-preview-frame';
-
-        container.appendChild(frame);
-        if (buttonContainer.parentNode !== null) {
-            buttonContainer.parentNode.removeChild(buttonContainer);
-        }
-        settings.style.display = '';
-    }
-
-    _onFrameLoad() {
-        this._onOptionsContextChange();
-        this._setText(this._previewTextInput.value);
-    }
-
-    _onFrameLoad2() {
-        this._onOptionsContextChange();
-        this._onCustomCssChange();
-        this._onCustomOuterCssChange();
-    }
-
-    _onTextChange(e) {
-        this._setText(e.currentTarget.value);
-    }
-
-    _onCustomCssChange() {
-        this._invoke('setCustomCss', {css: this._customCss.value});
-    }
-
-    _onCustomOuterCssChange() {
-        this._invoke('setCustomOuterCss', {css: this._customOuterCss.value});
-    }
-
-    _onOptionsContextChange() {
-        const optionsContext = this._settingsController.getOptionsContext();
-        this._invoke('updateOptionsContext', {optionsContext});
-    }
-
-    _setText(text) {
-        this._invoke('setText', {text});
-    }
-
-    _invoke(action, params) {
-        if (this._frame === null || this._frame.contentWindow === null) { return; }
-        this._frame.contentWindow.postMessage({action, params}, this._targetOrigin);
-    }
-}
diff --git a/ext/bg/js/settings/popup-preview-frame-main.js b/ext/bg/js/settings/popup-preview-frame-main.js
deleted file mode 100644
index dcbc0d96..00000000
--- a/ext/bg/js/settings/popup-preview-frame-main.js
+++ /dev/null
@@ -1,44 +0,0 @@
-/*
- * Copyright (C) 2019-2021  Yomichan Authors
- *
- * This program is free software: you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation, either version 3 of the License, or
- * (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program.  If not, see <https://www.gnu.org/licenses/>.
- */
-
-/* global
- * HotkeyHandler
- * PopupFactory
- * PopupPreviewFrame
- * api
- */
-
-(async () => {
-    try {
-        api.forwardLogsToBackend();
-
-        const {tabId, frameId} = await api.frameInformationGet();
-
-        const hotkeyHandler = new HotkeyHandler();
-        hotkeyHandler.prepare();
-
-        const popupFactory = new PopupFactory(frameId);
-        popupFactory.prepare();
-
-        const preview = new PopupPreviewFrame(tabId, frameId, popupFactory, hotkeyHandler);
-        await preview.prepare();
-
-        document.documentElement.dataset.loaded = 'true';
-    } catch (e) {
-        yomichan.logError(e);
-    }
-})();
diff --git a/ext/bg/js/settings/popup-preview-frame.js b/ext/bg/js/settings/popup-preview-frame.js
deleted file mode 100644
index 56100fb3..00000000
--- a/ext/bg/js/settings/popup-preview-frame.js
+++ /dev/null
@@ -1,233 +0,0 @@
-/*
- * Copyright (C) 2019-2021  Yomichan Authors
- *
- * This program is free software: you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation, either version 3 of the License, or
- * (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program.  If not, see <https://www.gnu.org/licenses/>.
- */
-
-/* global
- * Frontend
- * TextSourceRange
- * api
- * wanakana
- */
-
-class PopupPreviewFrame {
-    constructor(tabId, frameId, popupFactory, hotkeyHandler) {
-        this._tabId = tabId;
-        this._frameId = frameId;
-        this._popupFactory = popupFactory;
-        this._hotkeyHandler = hotkeyHandler;
-        this._frontend = null;
-        this._apiOptionsGetOld = null;
-        this._popupShown = false;
-        this._themeChangeTimeout = null;
-        this._textSource = null;
-        this._optionsContext = null;
-        this._exampleText = null;
-        this._exampleTextInput = null;
-        this._targetOrigin = chrome.runtime.getURL('/').replace(/\/$/, '');
-
-        this._windowMessageHandlers = new Map([
-            ['setText',              this._onSetText.bind(this)],
-            ['setCustomCss',         this._setCustomCss.bind(this)],
-            ['setCustomOuterCss',    this._setCustomOuterCss.bind(this)],
-            ['updateOptionsContext', this._updateOptionsContext.bind(this)]
-        ]);
-    }
-
-    async prepare() {
-        this._exampleText = document.querySelector('#example-text');
-        this._exampleTextInput = document.querySelector('#example-text-input');
-
-        if (this._exampleTextInput !== null && typeof wanakana !== 'undefined') {
-            wanakana.bind(this._exampleTextInput);
-        }
-
-        window.addEventListener('message', this._onMessage.bind(this), false);
-
-        // Setup events
-        document.querySelector('#theme-dark-checkbox').addEventListener('change', this._onThemeDarkCheckboxChanged.bind(this), false);
-        this._exampleText.addEventListener('click', this._onExampleTextClick.bind(this), false);
-        this._exampleTextInput.addEventListener('blur', this._onExampleTextInputBlur.bind(this), false);
-        this._exampleTextInput.addEventListener('input', this._onExampleTextInputInput.bind(this), false);
-
-        // Overwrite API functions
-        this._apiOptionsGetOld = api.optionsGet.bind(api);
-        api.optionsGet = this._apiOptionsGet.bind(this);
-
-        // Overwrite frontend
-        this._frontend = new Frontend({
-            tabId: this._tabId,
-            frameId: this._frameId,
-            popupFactory: this._popupFactory,
-            depth: 0,
-            parentPopupId: null,
-            parentFrameId: null,
-            useProxyPopup: false,
-            canUseWindowPopup: false,
-            pageType: 'web',
-            allowRootFramePopupProxy: false,
-            childrenSupported: false,
-            hotkeyHandler: this._hotkeyHandler
-        });
-        this._frontend.setOptionsContextOverride(this._optionsContext);
-        await this._frontend.prepare();
-        this._frontend.setDisabledOverride(true);
-        this._frontend.canClearSelection = false;
-        this._frontend.popup.on('customOuterCssChanged', this._onCustomOuterCssChanged.bind(this));
-
-        // Update search
-        this._updateSearch();
-    }
-
-    // Private
-
-    async _apiOptionsGet(...args) {
-        const options = await this._apiOptionsGetOld(...args);
-        options.general.enable = true;
-        options.general.debugInfo = false;
-        options.general.popupWidth = 400;
-        options.general.popupHeight = 250;
-        options.general.popupHorizontalOffset = 0;
-        options.general.popupVerticalOffset = 10;
-        options.general.popupHorizontalOffset2 = 10;
-        options.general.popupVerticalOffset2 = 0;
-        options.general.popupHorizontalTextPosition = 'below';
-        options.general.popupVerticalTextPosition = 'before';
-        options.scanning.selectText = false;
-        return options;
-    }
-
-    _onCustomOuterCssChanged({node, inShadow}) {
-        if (node === null || inShadow) { return; }
-
-        const node2 = document.querySelector('#popup-outer-css');
-        if (node2 === null) { return; }
-
-        // This simulates the stylesheet priorities when injecting using the web extension API.
-        node2.parentNode.insertBefore(node, node2);
-    }
-
-    _onMessage(e) {
-        if (e.origin !== this._targetOrigin) { return; }
-
-        const {action, params} = e.data;
-        const handler = this._windowMessageHandlers.get(action);
-        if (typeof handler !== 'function') { return; }
-
-        handler(params);
-    }
-
-    _onThemeDarkCheckboxChanged(e) {
-        document.documentElement.classList.toggle('dark', e.target.checked);
-        if (this._themeChangeTimeout !== null) {
-            clearTimeout(this._themeChangeTimeout);
-        }
-        this._themeChangeTimeout = setTimeout(() => {
-            this._themeChangeTimeout = null;
-            const popup = this._frontend.popup;
-            if (popup === null) { return; }
-            popup.updateTheme();
-        }, 300);
-    }
-
-    _onExampleTextClick() {
-        if (this._exampleTextInput === null) { return; }
-        const visible = this._exampleTextInput.hidden;
-        this._exampleTextInput.hidden = !visible;
-        if (!visible) { return; }
-        this._exampleTextInput.focus();
-        this._exampleTextInput.select();
-    }
-
-    _onExampleTextInputBlur() {
-        if (this._exampleTextInput === null) { return; }
-        this._exampleTextInput.hidden = true;
-    }
-
-    _onExampleTextInputInput(e) {
-        this._setText(e.currentTarget.value);
-    }
-
-    _onSetText({text}) {
-        this._setText(text, true);
-    }
-
-    _setText(text, setInput) {
-        if (setInput && this._exampleTextInput !== null) {
-            this._exampleTextInput.value = text;
-        }
-
-        if (this._exampleText === null) { return; }
-
-        this._exampleText.textContent = text;
-        if (this._frontend === null) { return; }
-        this._updateSearch();
-    }
-
-    _setInfoVisible(visible) {
-        const node = document.querySelector('.placeholder-info');
-        if (node === null) { return; }
-
-        node.classList.toggle('placeholder-info-visible', visible);
-    }
-
-    _setCustomCss({css}) {
-        if (this._frontend === null) { return; }
-        const popup = this._frontend.popup;
-        if (popup === null) { return; }
-        popup.setCustomCss(css);
-    }
-
-    _setCustomOuterCss({css}) {
-        if (this._frontend === null) { return; }
-        const popup = this._frontend.popup;
-        if (popup === null) { return; }
-        popup.setCustomOuterCss(css, false);
-    }
-
-    async _updateOptionsContext({optionsContext}) {
-        this._optionsContext = optionsContext;
-        if (this._frontend === null) { return; }
-        this._frontend.setOptionsContextOverride(optionsContext);
-        await this._frontend.updateOptions();
-        await this._updateSearch();
-    }
-
-    async _updateSearch() {
-        if (this._exampleText === null) { return; }
-
-        const textNode = this._exampleText.firstChild;
-        if (textNode === null) { return; }
-
-        const range = document.createRange();
-        range.selectNodeContents(textNode);
-        const source = new TextSourceRange(range, range.toString(), null, null);
-
-        try {
-            await this._frontend.setTextSource(source);
-        } finally {
-            source.cleanup();
-        }
-        this._textSource = source;
-        await this._frontend.showContentCompleted();
-
-        const popup = this._frontend.popup;
-        if (popup !== null && popup.isVisibleSync()) {
-            this._popupShown = true;
-        }
-
-        this._setInfoVisible(!this._popupShown);
-    }
-}
diff --git a/ext/bg/js/settings/profile-conditions-ui.js b/ext/bg/js/settings/profile-conditions-ui.js
deleted file mode 100644
index 5fda1dc0..00000000
--- a/ext/bg/js/settings/profile-conditions-ui.js
+++ /dev/null
@@ -1,712 +0,0 @@
-/*
- * Copyright (C) 2020-2021  Yomichan Authors
- *
- * This program is free software: you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation, either version 3 of the License, or
- * (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program.  If not, see <https://www.gnu.org/licenses/>.
- */
-
-/* global
- * KeyboardMouseInputField
- */
-
-class ProfileConditionsUI extends EventDispatcher {
-    constructor(settingsController) {
-        super();
-        this._settingsController = settingsController;
-        this._os = null;
-        this._conditionGroupsContainer = null;
-        this._addConditionGroupButton = null;
-        this._children = [];
-        this._eventListeners = new EventListenerCollection();
-        this._defaultType = 'popupLevel';
-        this._profileIndex = 0;
-        this._descriptors = new Map([
-            [
-                'popupLevel',
-                {
-                    displayName: 'Popup Level',
-                    defaultOperator: 'equal',
-                    operators: new Map([
-                        ['equal',              {displayName: '=',      type: 'integer', defaultValue: '0', validate: this._validateInteger.bind(this), normalize: this._normalizeInteger.bind(this)}],
-                        ['notEqual',           {displayName: '\u2260', type: 'integer', defaultValue: '0', validate: this._validateInteger.bind(this), normalize: this._normalizeInteger.bind(this)}],
-                        ['lessThan',           {displayName: '<',      type: 'integer', defaultValue: '0', validate: this._validateInteger.bind(this), normalize: this._normalizeInteger.bind(this)}],
-                        ['greaterThan',        {displayName: '>',      type: 'integer', defaultValue: '0', validate: this._validateInteger.bind(this), normalize: this._normalizeInteger.bind(this)}],
-                        ['lessThanOrEqual',    {displayName: '\u2264', type: 'integer', defaultValue: '0', validate: this._validateInteger.bind(this), normalize: this._normalizeInteger.bind(this)}],
-                        ['greaterThanOrEqual', {displayName: '\u2265', type: 'integer', defaultValue: '0', validate: this._validateInteger.bind(this), normalize: this._normalizeInteger.bind(this)}]
-                    ])
-                }
-            ],
-            [
-                'url',
-                {
-                    displayName: 'URL',
-                    defaultOperator: 'matchDomain',
-                    operators: new Map([
-                        ['matchDomain', {displayName: 'Matches Domain', type: 'string', defaultValue: 'example.com',   resetDefaultOnChange: true, validate: this._validateDomains.bind(this), normalize: this._normalizeDomains.bind(this)}],
-                        ['matchRegExp', {displayName: 'Matches RegExp', type: 'string', defaultValue: 'example\\.com', resetDefaultOnChange: true, validate: this._validateRegExp.bind(this)}]
-                    ])
-                }
-            ],
-            [
-                'modifierKeys',
-                {
-                    displayName: 'Modifier Keys',
-                    defaultOperator: 'are',
-                    operators: new Map([
-                        ['are',        {displayName: 'Are',            type: 'modifierKeys', defaultValue: ''}],
-                        ['areNot',     {displayName: 'Are Not',        type: 'modifierKeys', defaultValue: ''}],
-                        ['include',    {displayName: 'Include',        type: 'modifierKeys', defaultValue: ''}],
-                        ['notInclude', {displayName: 'Don\'t Include', type: 'modifierKeys', defaultValue: ''}]
-                    ])
-                }
-            ]
-        ]);
-    }
-
-    get settingsController() {
-        return this._settingsController;
-    }
-
-    get profileIndex() {
-        return this._profileIndex;
-    }
-
-    get os() {
-        return this._os;
-    }
-
-    set os(value) {
-        this._os = value;
-    }
-
-    async prepare(profileIndex) {
-        const options = await this._settingsController.getOptionsFull();
-        const {profiles} = options;
-        if (profileIndex < 0 || profileIndex >= profiles.length) { return; }
-        const {conditionGroups} = profiles[profileIndex];
-
-        this._profileIndex = profileIndex;
-        this._conditionGroupsContainer = document.querySelector('#profile-condition-groups');
-        this._addConditionGroupButton = document.querySelector('#profile-add-condition-group');
-
-        for (let i = 0, ii = conditionGroups.length; i < ii; ++i) {
-            this._addConditionGroup(conditionGroups[i], i);
-        }
-
-        this._eventListeners.addEventListener(this._addConditionGroupButton, 'click', this._onAddConditionGroupButtonClick.bind(this), false);
-    }
-
-    cleanup() {
-        this._eventListeners.removeAllEventListeners();
-
-        for (const child of this._children) {
-            child.cleanup();
-        }
-        this._children = [];
-
-        this._conditionGroupsContainer = null;
-        this._addConditionGroupButton = null;
-    }
-
-    instantiateTemplate(names) {
-        return this._settingsController.instantiateTemplate(names);
-    }
-
-    getDescriptorTypes() {
-        const results = [];
-        for (const [name, {displayName}] of this._descriptors.entries()) {
-            results.push({name, displayName});
-        }
-        return results;
-    }
-
-    getDescriptorOperators(type) {
-        const info = this._descriptors.get(type);
-        const results = [];
-        if (typeof info !== 'undefined') {
-            for (const [name, {displayName}] of info.operators.entries()) {
-                results.push({name, displayName});
-            }
-        }
-        return results;
-    }
-
-    getDefaultType() {
-        return this._defaultType;
-    }
-
-    getDefaultOperator(type) {
-        const info = this._descriptors.get(type);
-        return (typeof info !== 'undefined' ? info.defaultOperator : '');
-    }
-
-    getOperatorDetails(type, operator) {
-        const info = this._getOperatorDetails(type, operator);
-
-        const {
-            displayName=operator,
-            type: type2='string',
-            defaultValue='',
-            resetDefaultOnChange=false,
-            validate=null,
-            normalize=null
-        } = (typeof info === 'undefined' ? {} : info);
-
-        return {
-            displayName,
-            type: type2,
-            defaultValue,
-            resetDefaultOnChange,
-            validate,
-            normalize
-        };
-    }
-
-    getDefaultCondition() {
-        const type = this.getDefaultType();
-        const operator = this.getDefaultOperator(type);
-        const {defaultValue: value} = this.getOperatorDetails(type, operator);
-        return {type, operator, value};
-    }
-
-    removeConditionGroup(child) {
-        const index = child.index;
-        if (index < 0 || index >= this._children.length) { return false; }
-
-        const child2 = this._children[index];
-        if (child !== child2) { return false; }
-
-        this._children.splice(index, 1);
-        child.cleanup();
-
-        for (let i = index, ii = this._children.length; i < ii; ++i) {
-            this._children[i].index = i;
-        }
-
-        this.settingsController.modifyGlobalSettings([{
-            action: 'splice',
-            path: this.getPath('conditionGroups'),
-            start: index,
-            deleteCount: 1,
-            items: []
-        }]);
-
-        this._triggerConditionGroupCountChanged(this._children.length);
-
-        return true;
-    }
-
-    splitValue(value) {
-        return value.split(/[,;\s]+/).map((v) => v.trim().toLowerCase()).filter((v) => v.length > 0);
-    }
-
-    getPath(property) {
-        property = (typeof property === 'string' ? `.${property}` : '');
-        return `profiles[${this.profileIndex}]${property}`;
-    }
-
-    createKeyboardMouseInputField(inputNode, mouseButton) {
-        return new KeyboardMouseInputField(inputNode, mouseButton, this._os);
-    }
-
-    // Private
-
-    _onAddConditionGroupButtonClick() {
-        const conditionGroup = {
-            conditions: [this.getDefaultCondition()]
-        };
-        const index = this._children.length;
-
-        this._addConditionGroup(conditionGroup, index);
-
-        this.settingsController.modifyGlobalSettings([{
-            action: 'splice',
-            path: this.getPath('conditionGroups'),
-            start: index,
-            deleteCount: 0,
-            items: [conditionGroup]
-        }]);
-
-        this._triggerConditionGroupCountChanged(this._children.length);
-    }
-
-    _addConditionGroup(conditionGroup, index) {
-        const child = new ProfileConditionGroupUI(this, index);
-        child.prepare(conditionGroup);
-        this._children.push(child);
-        this._conditionGroupsContainer.appendChild(child.node);
-        return child;
-    }
-
-    _getOperatorDetails(type, operator) {
-        const info = this._descriptors.get(type);
-        return (typeof info !== 'undefined' ? info.operators.get(operator) : void 0);
-    }
-
-    _validateInteger(value) {
-        const number = Number.parseFloat(value);
-        return Number.isFinite(number) && Math.floor(number) === number;
-    }
-
-    _validateDomains(value) {
-        return this.splitValue(value).length > 0;
-    }
-
-    _validateRegExp(value) {
-        try {
-            new RegExp(value, 'i');
-            return true;
-        } catch (e) {
-            return false;
-        }
-    }
-
-    _normalizeInteger(value) {
-        const number = Number.parseFloat(value);
-        return `${number}`;
-    }
-
-    _normalizeDomains(value) {
-        return this.splitValue(value).join(', ');
-    }
-
-    _triggerConditionGroupCountChanged(count) {
-        this.trigger('conditionGroupCountChanged', {count, profileIndex: this._profileIndex});
-    }
-}
-
-class ProfileConditionGroupUI {
-    constructor(parent, index) {
-        this._parent = parent;
-        this._index = index;
-        this._node = null;
-        this._conditionContainer = null;
-        this._addConditionButton = null;
-        this._children = [];
-        this._eventListeners = new EventListenerCollection();
-    }
-
-    get settingsController() {
-        return this._parent.settingsController;
-    }
-
-    get parent() {
-        return this._parent;
-    }
-
-    get index() {
-        return this._index;
-    }
-
-    set index(value) {
-        this._index = value;
-    }
-
-    get node() {
-        return this._node;
-    }
-
-    get childCount() {
-        return this._children.length;
-    }
-
-    prepare(conditionGroup) {
-        this._node = this._parent.instantiateTemplate('profile-condition-group');
-        this._conditionContainer = this._node.querySelector('.profile-condition-list');
-        this._addConditionButton = this._node.querySelector('.profile-condition-add-button');
-
-        const conditions = conditionGroup.conditions;
-        for (let i = 0, ii = conditions.length; i < ii; ++i) {
-            this._addCondition(conditions[i], i);
-        }
-
-        this._eventListeners.addEventListener(this._addConditionButton, 'click', this._onAddConditionButtonClick.bind(this), false);
-    }
-
-    cleanup() {
-        this._eventListeners.removeAllEventListeners();
-
-        for (const child of this._children) {
-            child.cleanup();
-        }
-        this._children = [];
-
-        if (this._node === null) { return; }
-
-        const node = this._node;
-        this._node = null;
-        this._conditionContainer = null;
-        this._addConditionButton = null;
-
-        if (node.parentNode !== null) {
-            node.parentNode.removeChild(node);
-        }
-    }
-
-    removeCondition(child) {
-        const index = child.index;
-        if (index < 0 || index >= this._children.length) { return false; }
-
-        const child2 = this._children[index];
-        if (child !== child2) { return false; }
-
-        this._children.splice(index, 1);
-        child.cleanup();
-
-        for (let i = index, ii = this._children.length; i < ii; ++i) {
-            this._children[i].index = i;
-        }
-
-        this.settingsController.modifyGlobalSettings([{
-            action: 'splice',
-            path: this.getPath('conditions'),
-            start: index,
-            deleteCount: 1,
-            items: []
-        }]);
-
-        if (this._children.length === 0) {
-            this.removeSelf();
-        }
-
-        return true;
-    }
-
-    getPath(property) {
-        property = (typeof property === 'string' ? `.${property}` : '');
-        return this._parent.getPath(`conditionGroups[${this._index}]${property}`);
-    }
-
-    removeSelf() {
-        this._parent.removeConditionGroup(this);
-    }
-
-    // Private
-
-    _onAddConditionButtonClick() {
-        const condition = this._parent.getDefaultCondition();
-        const index = this._children.length;
-
-        this._addCondition(condition, index);
-
-        this.settingsController.modifyGlobalSettings([{
-            action: 'splice',
-            path: this.getPath('conditions'),
-            start: index,
-            deleteCount: 0,
-            items: [condition]
-        }]);
-    }
-
-    _addCondition(condition, index) {
-        const child = new ProfileConditionUI(this, index);
-        child.prepare(condition);
-        this._children.push(child);
-        this._conditionContainer.appendChild(child.node);
-        return child;
-    }
-}
-
-class ProfileConditionUI {
-    constructor(parent, index) {
-        this._parent = parent;
-        this._index = index;
-        this._node = null;
-        this._typeInput = null;
-        this._operatorInput = null;
-        this._valueInputContainer = null;
-        this._removeButton = null;
-        this._mouseButton = null;
-        this._mouseButtonContainer = null;
-        this._menuButton = null;
-        this._value = '';
-        this._kbmInputField = null;
-        this._eventListeners = new EventListenerCollection();
-        this._inputEventListeners = new EventListenerCollection();
-    }
-
-    get settingsController() {
-        return this._parent.parent.settingsController;
-    }
-
-    get parent() {
-        return this._parent;
-    }
-
-    get index() {
-        return this._index;
-    }
-
-    set index(value) {
-        this._index = value;
-    }
-
-    get node() {
-        return this._node;
-    }
-
-    prepare(condition) {
-        const {type, operator, value} = condition;
-
-        this._node = this._parent.parent.instantiateTemplate('profile-condition');
-        this._typeInput = this._node.querySelector('.profile-condition-type');
-        this._typeOptionContainer = this._typeInput.querySelector('optgroup');
-        this._operatorInput = this._node.querySelector('.profile-condition-operator');
-        this._operatorOptionContainer = this._operatorInput.querySelector('optgroup');
-        this._valueInput = this._node.querySelector('.profile-condition-input');
-        this._removeButton = this._node.querySelector('.profile-condition-remove');
-        this._mouseButton = this._node.querySelector('.mouse-button');
-        this._mouseButtonContainer = this._node.querySelector('.mouse-button-container');
-        this._menuButton = this._node.querySelector('.profile-condition-menu-button');
-
-        const operatorDetails = this._getOperatorDetails(type, operator);
-        this._updateTypes(type);
-        this._updateOperators(type, operator);
-        this._updateValueInput(value, operatorDetails);
-
-        this._eventListeners.addEventListener(this._typeInput, 'change', this._onTypeChange.bind(this), false);
-        this._eventListeners.addEventListener(this._operatorInput, 'change', this._onOperatorChange.bind(this), false);
-        if (this._removeButton !== null) { this._eventListeners.addEventListener(this._removeButton, 'click', this._onRemoveButtonClick.bind(this), false); }
-        if (this._menuButton !== null) {
-            this._eventListeners.addEventListener(this._menuButton, 'menuOpen', this._onMenuOpen.bind(this), false);
-            this._eventListeners.addEventListener(this._menuButton, 'menuClose', this._onMenuClose.bind(this), false);
-        }
-    }
-
-    cleanup() {
-        this._eventListeners.removeAllEventListeners();
-        this._value = '';
-
-        if (this._node === null) { return; }
-
-        const node = this._node;
-        this._node = null;
-        this._typeInput = null;
-        this._operatorInput = null;
-        this._valueInputContainer = null;
-        this._removeButton = null;
-
-        if (node.parentNode !== null) {
-            node.parentNode.removeChild(node);
-        }
-    }
-
-    getPath(property) {
-        property = (typeof property === 'string' ? `.${property}` : '');
-        return this._parent.getPath(`conditions[${this._index}]${property}`);
-    }
-
-    // Private
-
-    _onTypeChange(e) {
-        const type = e.currentTarget.value;
-        this._setType(type);
-    }
-
-    _onOperatorChange(e) {
-        const type = this._typeInput.value;
-        const operator = e.currentTarget.value;
-        this._setOperator(type, operator);
-    }
-
-    _onValueInputChange({validate, normalize}, e) {
-        const node = e.currentTarget;
-        const value = node.value;
-        const okay = this._validateValue(value, validate);
-        this._value = value;
-        if (okay) {
-            const normalizedValue = this._normalizeValue(value, normalize);
-            node.value = normalizedValue;
-            this.settingsController.setGlobalSetting(this.getPath('value'), normalizedValue);
-        }
-    }
-
-    _onModifierInputChange({validate, normalize}, {modifiers}) {
-        modifiers = this._joinModifiers(modifiers);
-        const okay = this._validateValue(modifiers, validate);
-        this._value = modifiers;
-        if (okay) {
-            const normalizedValue = this._normalizeValue(modifiers, normalize);
-            this.settingsController.setGlobalSetting(this.getPath('value'), normalizedValue);
-        }
-    }
-
-    _onRemoveButtonClick() {
-        this._removeSelf();
-    }
-
-    _onMenuOpen(e) {
-        const bodyNode = e.detail.menu.bodyNode;
-        const deleteGroup = bodyNode.querySelector('.popup-menu-item[data-menu-action="deleteGroup"]');
-        if (deleteGroup !== null) {
-            deleteGroup.hidden = (this._parent.childCount <= 1);
-        }
-    }
-
-    _onMenuClose(e) {
-        switch (e.detail.action) {
-            case 'delete':
-                this._removeSelf();
-                break;
-            case 'deleteGroup':
-                this._parent.removeSelf();
-                break;
-            case 'resetValue':
-                this._resetValue();
-                break;
-        }
-    }
-
-    _getDescriptorTypes() {
-        return this._parent.parent.getDescriptorTypes();
-    }
-
-    _getDescriptorOperators(type) {
-        return this._parent.parent.getDescriptorOperators(type);
-    }
-
-    _getOperatorDetails(type, operator) {
-        return this._parent.parent.getOperatorDetails(type, operator);
-    }
-
-    _updateTypes(type) {
-        const types = this._getDescriptorTypes();
-        this._updateSelect(this._typeInput, this._typeOptionContainer, types, type);
-    }
-
-    _updateOperators(type, operator) {
-        const operators = this._getDescriptorOperators(type);
-        this._updateSelect(this._operatorInput, this._operatorOptionContainer, operators, operator);
-    }
-
-    _updateSelect(select, optionContainer, values, value) {
-        optionContainer.textContent = '';
-        for (const {name, displayName} of values) {
-            const option = document.createElement('option');
-            option.value = name;
-            option.textContent = displayName;
-            optionContainer.appendChild(option);
-        }
-        select.value = value;
-    }
-
-    _updateValueInput(value, {type, validate, normalize}) {
-        this._inputEventListeners.removeAllEventListeners();
-        if (this._kbmInputField !== null) {
-            this._kbmInputField.cleanup();
-            this._kbmInputField = null;
-        }
-
-        let inputType = 'text';
-        let inputValue = value;
-        let inputStep = null;
-        let showMouseButton = false;
-        const events = [];
-        const inputData = {validate, normalize};
-        const node = this._valueInput;
-
-        switch (type) {
-            case 'integer':
-                inputType = 'number';
-                inputStep = '1';
-                events.push(['addEventListener', node, 'change', this._onValueInputChange.bind(this, inputData), false]);
-                break;
-            case 'modifierKeys':
-            case 'modifierInputs':
-                inputValue = null;
-                showMouseButton = (type === 'modifierInputs');
-                this._kbmInputField = this._parent.parent.createKeyboardMouseInputField(node, this._mouseButton);
-                this._kbmInputField.prepare(null, this._splitModifiers(value), showMouseButton, false);
-                events.push(['on', this._kbmInputField, 'change', this._onModifierInputChange.bind(this, inputData), false]);
-                break;
-            default: // 'string'
-                events.push(['addEventListener', node, 'change', this._onValueInputChange.bind(this, inputData), false]);
-                break;
-        }
-
-        this._value = value;
-        delete node.dataset.invalid;
-        node.type = inputType;
-        if (inputValue !== null) {
-            node.value = inputValue;
-        }
-        if (typeof inputStep === 'string') {
-            node.step = inputStep;
-        } else {
-            node.removeAttribute('step');
-        }
-        this._mouseButtonContainer.hidden = !showMouseButton;
-        for (const args of events) {
-            this._inputEventListeners.addGeneric(...args);
-        }
-
-        this._validateValue(value, validate);
-    }
-
-    _validateValue(value, validate) {
-        const okay = (validate === null || validate(value));
-        this._valueInput.dataset.invalid = `${!okay}`;
-        return okay;
-    }
-
-    _normalizeValue(value, normalize) {
-        return (normalize !== null ? normalize(value) : value);
-    }
-
-    _removeSelf() {
-        this._parent.removeCondition(this);
-    }
-
-    _splitModifiers(modifiersString) {
-        return modifiersString.split(/[,;\s]+/).map((v) => v.trim().toLowerCase()).filter((v) => v.length > 0);
-    }
-
-    _joinModifiers(modifiersArray) {
-        return modifiersArray.join(', ');
-    }
-
-    async _setType(type, operator) {
-        const operators = this._getDescriptorOperators(type);
-        if (typeof operator === 'undefined') {
-            operator = operators.length > 0 ? operators[0].name : '';
-        }
-        const operatorDetails = this._getOperatorDetails(type, operator);
-        const {defaultValue} = operatorDetails;
-        this._updateSelect(this._operatorInput, this._operatorOptionContainer, operators, operator);
-        this._updateValueInput(defaultValue, operatorDetails);
-        await this.settingsController.modifyGlobalSettings([
-            {action: 'set', path: this.getPath('type'), value: type},
-            {action: 'set', path: this.getPath('operator'), value: operator},
-            {action: 'set', path: this.getPath('value'), value: defaultValue}
-        ]);
-    }
-
-    async _setOperator(type, operator) {
-        const operatorDetails = this._getOperatorDetails(type, operator);
-        const settingsModifications = [{action: 'set', path: this.getPath('operator'), value: operator}];
-        if (operatorDetails.resetDefaultOnChange) {
-            const {defaultValue} = operatorDetails;
-            const okay = this._updateValueInput(defaultValue, operatorDetails);
-            if (okay) {
-                settingsModifications.push({action: 'set', path: this.getPath('value'), value: defaultValue});
-            }
-        }
-        await this.settingsController.modifyGlobalSettings(settingsModifications);
-    }
-
-    async _resetValue() {
-        const type = this._typeInput.value;
-        const operator = this._operatorInput.value;
-        await this._setType(type, operator);
-    }
-}
diff --git a/ext/bg/js/settings/profile-controller.js b/ext/bg/js/settings/profile-controller.js
deleted file mode 100644
index 914fc679..00000000
--- a/ext/bg/js/settings/profile-controller.js
+++ /dev/null
@@ -1,698 +0,0 @@
-/*
- * Copyright (C) 2020-2021  Yomichan Authors
- *
- * This program is free software: you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation, either version 3 of the License, or
- * (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program.  If not, see <https://www.gnu.org/licenses/>.
- */
-
-/* global
- * ProfileConditionsUI
- * api
- */
-
-class ProfileController {
-    constructor(settingsController, modalController) {
-        this._settingsController = settingsController;
-        this._modalController = modalController;
-        this._profileConditionsUI = new ProfileConditionsUI(settingsController);
-        this._profileConditionsIndex = null;
-        this._profileActiveSelect = null;
-        this._profileTargetSelect = null;
-        this._profileCopySourceSelect = null;
-        this._profileNameInput = null;
-        this._removeProfileNameElement = null;
-        this._profileAddButton = null;
-        this._profileRemoveButton = null;
-        this._profileRemoveConfirmButton = null;
-        this._profileCopyButton = null;
-        this._profileCopyConfirmButton = null;
-        this._profileMoveUpButton = null;
-        this._profileMoveDownButton = null;
-        this._profileEntryListContainer = null;
-        this._profileConditionsProfileName = null;
-        this._profileRemoveModal = null;
-        this._profileCopyModal = null;
-        this._profileConditionsModal = null;
-        this._profileEntriesSupported = false;
-        this._profileEntryList = [];
-        this._profiles = [];
-        this._profileCurrent = 0;
-    }
-
-    get profileCount() {
-        return this._profiles.length;
-    }
-
-    get profileCurrentIndex() {
-        return this._profileCurrent;
-    }
-
-    async prepare() {
-        const {platform: {os}} = await api.getEnvironmentInfo();
-        this._profileConditionsUI.os = os;
-
-        this._profileActiveSelect = document.querySelector('#profile-active-select');
-        this._profileTargetSelect = document.querySelector('#profile-target-select');
-        this._profileCopySourceSelect = document.querySelector('#profile-copy-source-select');
-        this._profileNameInput = document.querySelector('#profile-name-input');
-        this._removeProfileNameElement = document.querySelector('#profile-remove-name');
-        this._profileAddButton = document.querySelector('#profile-add-button');
-        this._profileRemoveButton = document.querySelector('#profile-remove-button');
-        this._profileRemoveConfirmButton = document.querySelector('#profile-remove-confirm-button');
-        this._profileCopyButton = document.querySelector('#profile-copy-button');
-        this._profileCopyConfirmButton = document.querySelector('#profile-copy-confirm-button');
-        this._profileMoveUpButton = document.querySelector('#profile-move-up-button');
-        this._profileMoveDownButton = document.querySelector('#profile-move-down-button');
-        this._profileEntryListContainer = document.querySelector('#profile-entry-list');
-        this._profileConditionsProfileName = document.querySelector('#profile-conditions-profile-name');
-        this._profileRemoveModal = this._modalController.getModal('profile-remove');
-        this._profileCopyModal = this._modalController.getModal('profile-copy');
-        this._profileConditionsModal = this._modalController.getModal('profile-conditions');
-
-        this._profileEntriesSupported = (this._profileEntryListContainer !== null);
-
-        if (this._profileActiveSelect !== null) { this._profileActiveSelect.addEventListener('change', this._onProfileActiveChange.bind(this), false); }
-        if (this._profileTargetSelect !== null) { this._profileTargetSelect.addEventListener('change', this._onProfileTargetChange.bind(this), false); }
-        if (this._profileNameInput !== null) { this._profileNameInput.addEventListener('change', this._onNameChanged.bind(this), false); }
-        if (this._profileAddButton !== null) { this._profileAddButton.addEventListener('click', this._onAdd.bind(this), false); }
-        if (this._profileRemoveButton !== null) { this._profileRemoveButton.addEventListener('click', this._onDelete.bind(this), false); }
-        if (this._profileRemoveConfirmButton !== null) { this._profileRemoveConfirmButton.addEventListener('click', this._onDeleteConfirm.bind(this), false); }
-        if (this._profileCopyButton !== null) { this._profileCopyButton.addEventListener('click', this._onCopy.bind(this), false); }
-        if (this._profileCopyConfirmButton !== null) { this._profileCopyConfirmButton.addEventListener('click', this._onCopyConfirm.bind(this), false); }
-        if (this._profileMoveUpButton !== null) { this._profileMoveUpButton.addEventListener('click', this._onMove.bind(this, -1), false); }
-        if (this._profileMoveDownButton !== null) { this._profileMoveDownButton.addEventListener('click', this._onMove.bind(this, 1), false); }
-
-        this._profileConditionsUI.on('conditionGroupCountChanged', this._onConditionGroupCountChanged.bind(this));
-        this._settingsController.on('optionsChanged', this._onOptionsChanged.bind(this));
-        this._onOptionsChanged();
-    }
-
-    async moveProfile(profileIndex, offset) {
-        if (this._getProfile(profileIndex) === null) { return; }
-
-        const profileIndexNew = Math.max(0, Math.min(this._profiles.length - 1, profileIndex + offset));
-        if (profileIndex === profileIndexNew) { return; }
-
-        await this.swapProfiles(profileIndex, profileIndexNew);
-    }
-
-    async setProfileName(profileIndex, value) {
-        const profile = this._getProfile(profileIndex);
-        if (profile === null) { return; }
-
-        profile.name = value;
-        this._updateSelectName(profileIndex, value);
-
-        const profileEntry = this._getProfileEntry(profileIndex);
-        if (profileEntry !== null) { profileEntry.setName(value); }
-
-        await this._settingsController.setGlobalSetting(`profiles[${profileIndex}].name`, value);
-    }
-
-    async setDefaultProfile(profileIndex) {
-        const profile = this._getProfile(profileIndex);
-        if (profile === null) { return; }
-
-        this._profileActiveSelect.value = `${profileIndex}`;
-        this._profileCurrent = profileIndex;
-
-        const profileEntry = this._getProfileEntry(profileIndex);
-        if (profileEntry !== null) { profileEntry.setIsDefault(true); }
-
-        await this._settingsController.setGlobalSetting('profileCurrent', profileIndex);
-    }
-
-    async copyProfile(sourceProfileIndex, destinationProfileIndex) {
-        const sourceProfile = this._getProfile(sourceProfileIndex);
-        if (sourceProfile === null || !this._getProfile(destinationProfileIndex)) { return; }
-
-        const options = clone(sourceProfile.options);
-        this._profiles[destinationProfileIndex].options = options;
-
-        this._updateProfileSelectOptions();
-
-        const destinationProfileEntry = this._getProfileEntry(destinationProfileIndex);
-        if (destinationProfileEntry !== null) {
-            destinationProfileEntry.updateState();
-        }
-
-        await this._settingsController.modifyGlobalSettings([{
-            action: 'set',
-            path: `profiles[${destinationProfileIndex}].options`,
-            value: options
-        }]);
-
-        await this._settingsController.refresh();
-    }
-
-    async duplicateProfile(profileIndex) {
-        const profile = this._getProfile(profileIndex);
-        if (this.profile === null) { return; }
-
-        // Create new profile
-        const newProfile = clone(profile);
-        newProfile.name = this._createCopyName(profile.name, this._profiles, 100);
-
-        // Update state
-        const index = this._profiles.length;
-        this._profiles.push(newProfile);
-        if (this._profileEntriesSupported) {
-            this._addProfileEntry(index);
-        }
-        this._updateProfileSelectOptions();
-
-        // Modify settings
-        await this._settingsController.modifyGlobalSettings([{
-            action: 'splice',
-            path: 'profiles',
-            start: index,
-            deleteCount: 0,
-            items: [newProfile]
-        }]);
-
-        // Update profile index
-        this._settingsController.profileIndex = index;
-    }
-
-    async deleteProfile(profileIndex) {
-        const profile = this._getProfile(profileIndex);
-        if (profile === null || this.profileCount <= 1) { return; }
-
-        // Get indices
-        let profileCurrentNew = this._profileCurrent;
-        const settingsProfileIndex = this._settingsController.profileIndex;
-
-        // Construct settings modifications
-        const modifications = [{
-            action: 'splice',
-            path: 'profiles',
-            start: profileIndex,
-            deleteCount: 1,
-            items: []
-        }];
-        if (profileCurrentNew >= profileIndex) {
-            profileCurrentNew = Math.min(profileCurrentNew - 1, this._profiles.length - 1);
-            modifications.push({
-                action: 'set',
-                path: 'profileCurrent',
-                value: profileCurrentNew
-            });
-        }
-
-        // Update state
-        this._profileCurrent = profileCurrentNew;
-
-        this._profiles.splice(profileIndex, 1);
-
-        if (profileIndex < this._profileEntryList.length) {
-            const profileEntry = this._profileEntryList[profileIndex];
-            profileEntry.cleanup();
-            this._profileEntryList.splice(profileIndex, 1);
-
-            for (let i = profileIndex, ii = this._profileEntryList.length; i < ii; ++i) {
-                this._profileEntryList[i].index = i;
-            }
-        }
-
-        const profileEntry2 = this._getProfileEntry(profileCurrentNew);
-        if (profileEntry2 !== null) {
-            profileEntry2.setIsDefault(true);
-        }
-
-        this._updateProfileSelectOptions();
-
-        // Modify settings
-        await this._settingsController.modifyGlobalSettings(modifications);
-
-        // Update profile index
-        if (settingsProfileIndex === profileIndex) {
-            this._settingsController.profileIndex = profileCurrentNew;
-        }
-    }
-
-    async swapProfiles(index1, index2) {
-        const profile1 = this._getProfile(index1);
-        const profile2 = this._getProfile(index2);
-        if (profile1 === null || profile2 === null || index1 === index2) { return; }
-
-        // Get swapped indices
-        const profileCurrent = this._profileCurrent;
-        const profileCurrentNew = this._getSwappedValue(profileCurrent, index1, index2);
-
-        const settingsProfileIndex = this._settingsController.profileIndex;
-        const settingsProfileIndexNew = this._getSwappedValue(settingsProfileIndex, index1, index2);
-
-        // Construct settings modifications
-        const modifications = [{
-            action: 'swap',
-            path1: `profiles[${index1}]`,
-            path2: `profiles[${index2}]`
-        }];
-        if (profileCurrentNew !== profileCurrent) {
-            modifications.push({
-                action: 'set',
-                path: 'profileCurrent',
-                value: profileCurrentNew
-            });
-        }
-
-        // Update state
-        this._profileCurrent = profileCurrentNew;
-
-        this._profiles[index1] = profile2;
-        this._profiles[index2] = profile1;
-
-        const entry1 = this._getProfileEntry(index1);
-        const entry2 = this._getProfileEntry(index2);
-        if (entry1 !== null && entry2 !== null) {
-            entry1.index = index2;
-            entry2.index = index1;
-            this._swapDomNodes(entry1.node, entry2.node);
-            this._profileEntryList[index1] = entry2;
-            this._profileEntryList[index2] = entry1;
-        }
-
-        this._updateProfileSelectOptions();
-
-        // Modify settings
-        await this._settingsController.modifyGlobalSettings(modifications);
-
-        // Update profile index
-        if (settingsProfileIndex !== settingsProfileIndexNew) {
-            this._settingsController.profileIndex = settingsProfileIndexNew;
-        }
-    }
-
-    openDeleteProfileModal(profileIndex) {
-        const profile = this._getProfile(profileIndex);
-        if (profile === null || this.profileCount <= 1) { return; }
-
-        this._removeProfileNameElement.textContent = profile.name;
-        this._profileRemoveModal.node.dataset.profileIndex = `${profileIndex}`;
-        this._profileRemoveModal.setVisible(true);
-    }
-
-    openCopyProfileModal(profileIndex) {
-        const profile = this._getProfile(profileIndex);
-        if (profile === null || this.profileCount <= 1) { return; }
-
-        let copyFromIndex = this._profileCurrent;
-        if (copyFromIndex === profileIndex) {
-            if (profileIndex !== 0) {
-                copyFromIndex = 0;
-            } else if (this.profileCount > 1) {
-                copyFromIndex = 1;
-            }
-        }
-
-        const profileIndexString = `${profileIndex}`;
-        for (const option of this._profileCopySourceSelect.querySelectorAll('option')) {
-            const {value} = option;
-            option.disabled = (value === profileIndexString);
-        }
-        this._profileCopySourceSelect.value = `${copyFromIndex}`;
-
-        this._profileCopyModal.node.dataset.profileIndex = `${profileIndex}`;
-        this._profileCopyModal.setVisible(true);
-    }
-
-    openProfileConditionsModal(profileIndex) {
-        const profile = this._getProfile(profileIndex);
-        if (profile === null) { return; }
-
-        if (this._profileConditionsModal === null) { return; }
-        this._profileConditionsModal.setVisible(true);
-
-        this._profileConditionsUI.cleanup();
-        this._profileConditionsIndex = profileIndex;
-        this._profileConditionsUI.prepare(profileIndex);
-        if (this._profileConditionsProfileName !== null) {
-            this._profileConditionsProfileName.textContent = profile.name;
-        }
-    }
-
-    // Private
-
-    async _onOptionsChanged() {
-        // Update state
-        const {profiles, profileCurrent} = await this._settingsController.getOptionsFull();
-        this._profiles = profiles;
-        this._profileCurrent = profileCurrent;
-
-        const settingsProfileIndex = this._settingsController.profileIndex;
-        const settingsProfile = this._getProfile(settingsProfileIndex);
-
-        // Udpate UI
-        this._updateProfileSelectOptions();
-
-        this._profileActiveSelect.value = `${profileCurrent}`;
-        this._profileTargetSelect.value = `${settingsProfileIndex}`;
-
-        if (this._profileRemoveButton !== null) { this._profileRemoveButton.disabled = (profiles.length <= 1); }
-        if (this._profileCopyButton !== null) { this._profileCopyButton.disabled = (profiles.length <= 1); }
-        if (this._profileMoveUpButton !== null) { this._profileMoveUpButton.disabled = (settingsProfileIndex <= 0); }
-        if (this._profileMoveDownButton !== null) { this._profileMoveDownButton.disabled = (settingsProfileIndex >= profiles.length - 1); }
-
-        if (this._profileNameInput !== null && settingsProfile !== null) { this._profileNameInput.value = settingsProfile.name; }
-
-        // Update profile conditions
-        this._profileConditionsUI.cleanup();
-        const conditionsProfile = this._getProfile(this._profileConditionsIndex !== null ? this._profileConditionsIndex : settingsProfileIndex);
-        if (conditionsProfile !== null) {
-            this._profileConditionsUI.prepare(settingsProfileIndex);
-        }
-
-        // Udpate profile entries
-        for (const entry of this._profileEntryList) {
-            entry.cleanup();
-        }
-        this._profileEntryList = [];
-        if (this._profileEntriesSupported) {
-            for (let i = 0, ii = profiles.length; i < ii; ++i) {
-                this._addProfileEntry(i);
-            }
-        }
-    }
-
-    _onProfileActiveChange(e) {
-        const value = this._tryGetValidProfileIndex(e.currentTarget.value);
-        if (value === null) { return; }
-        this.setDefaultProfile(value);
-    }
-
-    _onProfileTargetChange(e) {
-        const value = this._tryGetValidProfileIndex(e.currentTarget.value);
-        if (value === null) { return; }
-        this._settingsController.profileIndex = value;
-    }
-
-    _onNameChanged(e) {
-        this.setProfileName(this._settingsController.profileIndex, e.currentTarget.value);
-    }
-
-    _onAdd() {
-        this.duplicateProfile(this._settingsController.profileIndex);
-    }
-
-    _onDelete(e) {
-        const profileIndex = this._settingsController.profileIndex;
-        if (e.shiftKey) {
-            this.deleteProfile(profileIndex);
-        } else {
-            this.openDeleteProfileModal(profileIndex);
-        }
-    }
-
-    _onDeleteConfirm() {
-        const modal = this._profileRemoveModal;
-        modal.setVisible(false);
-        const {node} = modal;
-        let profileIndex = node.dataset.profileIndex;
-        delete node.dataset.profileIndex;
-
-        profileIndex = this._tryGetValidProfileIndex(profileIndex);
-        if (profileIndex === null) { return; }
-
-        this.deleteProfile(profileIndex);
-    }
-
-    _onCopy() {
-        this.openCopyProfileModal(this._settingsController.profileIndex);
-    }
-
-    _onCopyConfirm() {
-        const modal = this._profileCopyModal;
-        modal.setVisible(false);
-        const {node} = modal;
-        let destinationProfileIndex = node.dataset.profileIndex;
-        delete node.dataset.profileIndex;
-
-        destinationProfileIndex = this._tryGetValidProfileIndex(destinationProfileIndex);
-        if (destinationProfileIndex === null) { return; }
-
-        const sourceProfileIndex = this._tryGetValidProfileIndex(this._profileCopySourceSelect.value);
-        if (sourceProfileIndex === null) { return; }
-
-        this.copyProfile(sourceProfileIndex, destinationProfileIndex);
-    }
-
-    _onMove(offset) {
-        this.moveProfile(this._settingsController.profileIndex, offset);
-    }
-
-    _onConditionGroupCountChanged({count, profileIndex}) {
-        if (profileIndex >= 0 && profileIndex < this._profileEntryList.length) {
-            const profileEntry = this._profileEntryList[profileIndex];
-            profileEntry.setConditionGroupsCount(count);
-        }
-    }
-
-    _addProfileEntry(profileIndex) {
-        const profile = this._profiles[profileIndex];
-        const node = this._settingsController.instantiateTemplate('profile-entry');
-        const entry = new ProfileEntry(this, node);
-        this._profileEntryList.push(entry);
-        entry.prepare(profile, profileIndex);
-        this._profileEntryListContainer.appendChild(node);
-    }
-
-    _updateProfileSelectOptions() {
-        for (const select of this._getAllProfileSelects()) {
-            const fragment = document.createDocumentFragment();
-            for (let i = 0; i < this._profiles.length; ++i) {
-                const profile = this._profiles[i];
-                const option = document.createElement('option');
-                option.value = `${i}`;
-                option.textContent = profile.name;
-                fragment.appendChild(option);
-            }
-            select.textContent = '';
-            select.appendChild(fragment);
-        }
-    }
-
-    _updateSelectName(index, name) {
-        const optionValue = `${index}`;
-        for (const select of this._getAllProfileSelects()) {
-            for (const option of select.querySelectorAll('option')) {
-                if (option.value === optionValue) {
-                    option.textContent = name;
-                }
-            }
-        }
-    }
-
-    _getAllProfileSelects() {
-        return [
-            this._profileActiveSelect,
-            this._profileTargetSelect,
-            this._profileCopySourceSelect
-        ];
-    }
-
-    _tryGetValidProfileIndex(stringValue) {
-        if (typeof stringValue !== 'string') { return null; }
-        const intValue = parseInt(stringValue, 10);
-        return (
-            Number.isFinite(intValue) &&
-            intValue >= 0 &&
-            intValue < this.profileCount ?
-            intValue : null
-        );
-    }
-
-    _createCopyName(name, profiles, maxUniqueAttempts) {
-        let space, index, prefix, suffix;
-        const match = /^([\w\W]*\(Copy)((\s+)(\d+))?(\)\s*)$/.exec(name);
-        if (match === null) {
-            prefix = `${name} (Copy`;
-            space = '';
-            index = '';
-            suffix = ')';
-        } else {
-            prefix = match[1];
-            suffix = match[5];
-            if (typeof match[2] === 'string') {
-                space = match[3];
-                index = parseInt(match[4], 10) + 1;
-            } else {
-                space = ' ';
-                index = 2;
-            }
-        }
-
-        let i = 0;
-        while (true) {
-            const newName = `${prefix}${space}${index}${suffix}`;
-            if (i++ >= maxUniqueAttempts || profiles.findIndex((profile) => profile.name === newName) < 0) {
-                return newName;
-            }
-            if (typeof index !== 'number') {
-                index = 2;
-                space = ' ';
-            } else {
-                ++index;
-            }
-        }
-    }
-
-    _getSwappedValue(currentValue, value1, value2) {
-        if (currentValue === value1) { return value2; }
-        if (currentValue === value2) { return value1; }
-        return currentValue;
-    }
-
-    _getProfile(profileIndex) {
-        return (profileIndex >= 0 && profileIndex < this._profiles.length ? this._profiles[profileIndex] : null);
-    }
-
-    _getProfileEntry(profileIndex) {
-        return (profileIndex >= 0 && profileIndex < this._profileEntryList.length ? this._profileEntryList[profileIndex] : null);
-    }
-
-    _swapDomNodes(node1, node2) {
-        const parent1 = node1.parentNode;
-        const parent2 = node2.parentNode;
-        const next1 = node1.nextSibling;
-        const next2 = node2.nextSibling;
-        if (node2 !== next1) { parent1.insertBefore(node2, next1); }
-        if (node1 !== next2) { parent2.insertBefore(node1, next2); }
-    }
-}
-
-class ProfileEntry {
-    constructor(profileController, node) {
-        this._profileController = profileController;
-        this._node = node;
-        this._profile = null;
-        this._index = 0;
-        this._isDefaultRadio = null;
-        this._nameInput = null;
-        this._countLink = null;
-        this._countText = null;
-        this._menuButton = null;
-        this._eventListeners = new EventListenerCollection();
-    }
-
-    get index() {
-        return this._index;
-    }
-
-    set index(value) {
-        this._index = value;
-    }
-
-    get node() {
-        return this._node;
-    }
-
-    prepare(profile, index) {
-        this._profile = profile;
-        this._index = index;
-
-        const node = this._node;
-        this._isDefaultRadio = node.querySelector('.profile-entry-is-default-radio');
-        this._nameInput = node.querySelector('.profile-entry-name-input');
-        this._countLink = node.querySelector('.profile-entry-condition-count-link');
-        this._countText = node.querySelector('.profile-entry-condition-count');
-        this._menuButton = node.querySelector('.profile-entry-menu-button');
-
-        this.updateState();
-
-        this._eventListeners.addEventListener(this._isDefaultRadio, 'change', this._onIsDefaultRadioChange.bind(this), false);
-        this._eventListeners.addEventListener(this._nameInput, 'input', this._onNameInputInput.bind(this), false);
-        this._eventListeners.addEventListener(this._countLink, 'click', this._onConditionsCountLinkClick.bind(this), false);
-        this._eventListeners.addEventListener(this._menuButton, 'menuOpen', this._onMenuOpen.bind(this), false);
-        this._eventListeners.addEventListener(this._menuButton, 'menuClose', this._onMenuClose.bind(this), false);
-    }
-
-    cleanup() {
-        this._eventListeners.removeAllEventListeners();
-        if (this._node.parentNode !== null) {
-            this._node.parentNode.removeChild(this._node);
-        }
-    }
-
-    setName(value) {
-        if (this._nameInput.value === value) { return; }
-        this._nameInput.value = value;
-    }
-
-    setIsDefault(value) {
-        this._isDefaultRadio.checked = value;
-    }
-
-    updateState() {
-        this._nameInput.value = this._profile.name;
-        this._countText.textContent = `${this._profile.conditionGroups.length}`;
-        this._isDefaultRadio.checked = (this._index === this._profileController.profileCurrentIndex);
-    }
-
-    setConditionGroupsCount(count) {
-        this._countText.textContent = `${count}`;
-    }
-
-    // Private
-
-    _onIsDefaultRadioChange(e) {
-        if (!e.currentTarget.checked) { return; }
-        this._profileController.setDefaultProfile(this._index);
-    }
-
-    _onNameInputInput(e) {
-        const name = e.currentTarget.value;
-        this._profileController.setProfileName(this._index, name);
-    }
-
-    _onConditionsCountLinkClick() {
-        this._profileController.openProfileConditionsModal(this._index);
-    }
-
-    _onMenuOpen(e) {
-        const bodyNode = e.detail.menu.bodyNode;
-        const count = this._profileController.profileCount;
-        this._setMenuActionEnabled(bodyNode, 'moveUp', this._index > 0);
-        this._setMenuActionEnabled(bodyNode, 'moveDown', this._index < count - 1);
-        this._setMenuActionEnabled(bodyNode, 'copyFrom', count > 1);
-        this._setMenuActionEnabled(bodyNode, 'delete', count > 1);
-    }
-
-    _onMenuClose(e) {
-        switch (e.detail.action) {
-            case 'moveUp':
-                this._profileController.moveProfile(this._index, -1);
-                break;
-            case 'moveDown':
-                this._profileController.moveProfile(this._index, 1);
-                break;
-            case 'copyFrom':
-                this._profileController.openCopyProfileModal(this._index);
-                break;
-            case 'editConditions':
-                this._profileController.openProfileConditionsModal(this._index);
-                break;
-            case 'duplicate':
-                this._profileController.duplicateProfile(this._index);
-                break;
-            case 'delete':
-                this._profileController.openDeleteProfileModal(this._index);
-                break;
-        }
-    }
-
-    _setMenuActionEnabled(menu, action, enabled) {
-        const element = menu.querySelector(`[data-menu-action="${action}"]`);
-        if (element === null) { return; }
-        element.disabled = !enabled;
-    }
-}
diff --git a/ext/bg/js/settings/scan-inputs-controller.js b/ext/bg/js/settings/scan-inputs-controller.js
deleted file mode 100644
index eb179c6a..00000000
--- a/ext/bg/js/settings/scan-inputs-controller.js
+++ /dev/null
@@ -1,310 +0,0 @@
-/*
- * Copyright (C) 2020-2021  Yomichan Authors
- *
- * This program is free software: you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation, either version 3 of the License, or
- * (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program.  If not, see <https://www.gnu.org/licenses/>.
- */
-
-/* global
- * KeyboardMouseInputField
- * api
- */
-
-class ScanInputsController {
-    constructor(settingsController) {
-        this._settingsController = settingsController;
-        this._os = null;
-        this._container = null;
-        this._addButton = null;
-        this._scanningInputCountNodes = null;
-        this._entries = [];
-    }
-
-    async prepare() {
-        const {platform: {os}} = await api.getEnvironmentInfo();
-        this._os = os;
-
-        this._container = document.querySelector('#scan-input-list');
-        this._addButton = document.querySelector('#scan-input-add');
-        this._scanningInputCountNodes = document.querySelectorAll('.scanning-input-count');
-
-        this._addButton.addEventListener('click', this._onAddButtonClick.bind(this), false);
-        this._settingsController.on('scanInputsChanged', this._onScanInputsChanged.bind(this));
-        this._settingsController.on('optionsChanged', this._onOptionsChanged.bind(this));
-
-        this.refresh();
-    }
-
-    removeInput(index) {
-        if (index < 0 || index >= this._entries.length) { return false; }
-        const input = this._entries[index];
-        input.cleanup();
-        this._entries.splice(index, 1);
-        for (let i = index, ii = this._entries.length; i < ii; ++i) {
-            this._entries[i].index = i;
-        }
-        this._updateCounts();
-        this._modifyProfileSettings([{
-            action: 'splice',
-            path: 'scanning.inputs',
-            start: index,
-            deleteCount: 1,
-            items: []
-        }]);
-        return true;
-    }
-
-    async setProperty(index, property, value, event) {
-        const path = `scanning.inputs[${index}].${property}`;
-        await this._settingsController.setProfileSetting(path, value);
-        if (event) {
-            this._triggerScanInputsChanged();
-        }
-    }
-
-    instantiateTemplate(name) {
-        return this._settingsController.instantiateTemplate(name);
-    }
-
-    async refresh() {
-        const options = await this._settingsController.getOptions();
-        this._onOptionsChanged({options});
-    }
-
-    // Private
-
-    _onScanInputsChanged({source}) {
-        if (source === this) { return; }
-        this.refresh();
-    }
-
-    _onOptionsChanged({options}) {
-        const {inputs} = options.scanning;
-
-        for (let i = this._entries.length - 1; i >= 0; --i) {
-            this._entries[i].cleanup();
-        }
-        this._entries.length = 0;
-
-        for (let i = 0, ii = inputs.length; i < ii; ++i) {
-            this._addOption(i, inputs[i]);
-        }
-
-        this._updateCounts();
-    }
-
-    _onAddButtonClick(e) {
-        e.preventDefault();
-
-        const index = this._entries.length;
-        const scanningInput = ScanInputsController.createDefaultMouseInput('', '');
-        this._addOption(index, scanningInput);
-        this._updateCounts();
-        this._modifyProfileSettings([{
-            action: 'splice',
-            path: 'scanning.inputs',
-            start: index,
-            deleteCount: 0,
-            items: [scanningInput]
-        }]);
-    }
-
-    _addOption(index, scanningInput) {
-        const field = new ScanInputField(this, index, this._os);
-        this._entries.push(field);
-        field.prepare(this._container, scanningInput);
-    }
-
-    _updateCounts() {
-        const stringValue = `${this._entries.length}`;
-        for (const node of this._scanningInputCountNodes) {
-            node.textContent = stringValue;
-        }
-    }
-
-    async _modifyProfileSettings(targets) {
-        await this._settingsController.modifyProfileSettings(targets);
-        this._triggerScanInputsChanged();
-    }
-
-    _triggerScanInputsChanged() {
-        this._settingsController.trigger('scanInputsChanged', {source: this});
-    }
-
-    static createDefaultMouseInput(include, exclude) {
-        return {
-            include,
-            exclude,
-            types: {mouse: true, touch: false, pen: false},
-            options: {
-                showAdvanced: false,
-                searchTerms: true,
-                searchKanji: true,
-                scanOnTouchMove: true,
-                scanOnPenHover: true,
-                scanOnPenPress: true,
-                scanOnPenRelease: false,
-                preventTouchScrolling: true
-            }
-        };
-    }
-}
-
-class ScanInputField {
-    constructor(parent, index, os) {
-        this._parent = parent;
-        this._index = index;
-        this._os = os;
-        this._node = null;
-        this._includeInputField = null;
-        this._excludeInputField = null;
-        this._eventListeners = new EventListenerCollection();
-    }
-
-    get index() {
-        return this._index;
-    }
-
-    set index(value) {
-        this._index = value;
-        this._updateDataSettingTargets();
-    }
-
-    prepare(container, scanningInput) {
-        const {include, exclude, options: {showAdvanced}} = scanningInput;
-
-        const node = this._parent.instantiateTemplate('scan-input');
-        const includeInputNode = node.querySelector('.scan-input-field[data-property=include]');
-        const includeMouseButton = node.querySelector('.mouse-button[data-property=include]');
-        const excludeInputNode = node.querySelector('.scan-input-field[data-property=exclude]');
-        const excludeMouseButton = node.querySelector('.mouse-button[data-property=exclude]');
-        const removeButton = node.querySelector('.scan-input-remove');
-        const menuButton = node.querySelector('.scanning-input-menu-button');
-
-        node.dataset.showAdvanced = `${showAdvanced}`;
-
-        this._node = node;
-        container.appendChild(node);
-
-        const isPointerTypeSupported = this._isPointerTypeSupported.bind(this);
-        this._includeInputField = new KeyboardMouseInputField(includeInputNode, includeMouseButton, this._os, isPointerTypeSupported);
-        this._excludeInputField = new KeyboardMouseInputField(excludeInputNode, excludeMouseButton, this._os, isPointerTypeSupported);
-        this._includeInputField.prepare(null, this._splitModifiers(include), true, false);
-        this._excludeInputField.prepare(null, this._splitModifiers(exclude), true, false);
-
-        this._eventListeners.on(this._includeInputField, 'change', this._onIncludeValueChange.bind(this));
-        this._eventListeners.on(this._excludeInputField, 'change', this._onExcludeValueChange.bind(this));
-        if (removeButton !== null) {
-            this._eventListeners.addEventListener(removeButton, 'click', this._onRemoveClick.bind(this));
-        }
-        if (menuButton !== null) {
-            this._eventListeners.addEventListener(menuButton, 'menuOpen', this._onMenuOpen.bind(this));
-            this._eventListeners.addEventListener(menuButton, 'menuClose', this._onMenuClose.bind(this));
-        }
-
-        this._updateDataSettingTargets();
-    }
-
-    cleanup() {
-        this._eventListeners.removeAllEventListeners();
-        if (this._includeInputField !== null) {
-            this._includeInputField.cleanup();
-            this._includeInputField = null;
-        }
-        if (this._node !== null) {
-            const parent = this._node.parentNode;
-            if (parent !== null) { parent.removeChild(this._node); }
-            this._node = null;
-        }
-    }
-
-    // Private
-
-    _onIncludeValueChange({modifiers}) {
-        modifiers = this._joinModifiers(modifiers);
-        this._parent.setProperty(this._index, 'include', modifiers, true);
-    }
-
-    _onExcludeValueChange({modifiers}) {
-        modifiers = this._joinModifiers(modifiers);
-        this._parent.setProperty(this._index, 'exclude', modifiers, true);
-    }
-
-    _onRemoveClick(e) {
-        e.preventDefault();
-        this._removeSelf();
-    }
-
-    _onMenuOpen(e) {
-        const bodyNode = e.detail.menu.bodyNode;
-        const showAdvanced = bodyNode.querySelector('.popup-menu-item[data-menu-action="showAdvanced"]');
-        const hideAdvanced = bodyNode.querySelector('.popup-menu-item[data-menu-action="hideAdvanced"]');
-        const advancedVisible = (this._node.dataset.showAdvanced === 'true');
-        if (showAdvanced !== null) {
-            showAdvanced.hidden = advancedVisible;
-        }
-        if (hideAdvanced !== null) {
-            hideAdvanced.hidden = !advancedVisible;
-        }
-    }
-
-    _onMenuClose(e) {
-        switch (e.detail.action) {
-            case 'remove':
-                this._removeSelf();
-                break;
-            case 'showAdvanced':
-                this._setAdvancedOptionsVisible(true);
-                break;
-            case 'hideAdvanced':
-                this._setAdvancedOptionsVisible(false);
-                break;
-            case 'clearInputs':
-                this._includeInputField.clearInputs();
-                this._excludeInputField.clearInputs();
-                break;
-        }
-    }
-
-    _isPointerTypeSupported(pointerType) {
-        if (this._node === null) { return false; }
-        const node = this._node.querySelector(`input.scan-input-settings-checkbox[data-property="types.${pointerType}"]`);
-        return node !== null && node.checked;
-    }
-
-    _updateDataSettingTargets() {
-        const index = this._index;
-        for (const typeCheckbox of this._node.querySelectorAll('.scan-input-settings-checkbox')) {
-            const {property} = typeCheckbox.dataset;
-            typeCheckbox.dataset.setting = `scanning.inputs[${index}].${property}`;
-        }
-    }
-
-    _removeSelf() {
-        this._parent.removeInput(this._index);
-    }
-
-    _setAdvancedOptionsVisible(showAdvanced) {
-        showAdvanced = !!showAdvanced;
-        this._node.dataset.showAdvanced = `${showAdvanced}`;
-        this._parent.setProperty(this._index, 'options.showAdvanced', showAdvanced, false);
-    }
-
-    _splitModifiers(modifiersString) {
-        return modifiersString.split(/[,;\s]+/).map((v) => v.trim().toLowerCase()).filter((v) => v.length > 0);
-    }
-
-    _joinModifiers(modifiersArray) {
-        return modifiersArray.join(', ');
-    }
-}
diff --git a/ext/bg/js/settings/scan-inputs-simple-controller.js b/ext/bg/js/settings/scan-inputs-simple-controller.js
deleted file mode 100644
index 01f044c2..00000000
--- a/ext/bg/js/settings/scan-inputs-simple-controller.js
+++ /dev/null
@@ -1,247 +0,0 @@
-/*
- * Copyright (C) 2020-2021  Yomichan Authors
- *
- * This program is free software: you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation, either version 3 of the License, or
- * (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program.  If not, see <https://www.gnu.org/licenses/>.
- */
-
-/* global
- * HotkeyUtil
- * ScanInputsController
- * api
- */
-
-class ScanInputsSimpleController {
-    constructor(settingsController) {
-        this._settingsController = settingsController;
-        this._middleMouseButtonScan = null;
-        this._mainScanModifierKeyInput = null;
-        this._mainScanModifierKeyInputHasOther = false;
-        this._hotkeyUtil = new HotkeyUtil();
-    }
-
-    async prepare() {
-        this._middleMouseButtonScan = document.querySelector('#middle-mouse-button-scan');
-        this._mainScanModifierKeyInput = document.querySelector('#main-scan-modifier-key');
-
-        const {platform: {os}} = await api.getEnvironmentInfo();
-        this._hotkeyUtil.os = os;
-
-        this._mainScanModifierKeyInputHasOther = false;
-        this._populateSelect(this._mainScanModifierKeyInput, this._mainScanModifierKeyInputHasOther);
-
-        const options = await this._settingsController.getOptions();
-
-        this._middleMouseButtonScan.addEventListener('change', this.onMiddleMouseButtonScanChange.bind(this), false);
-        this._mainScanModifierKeyInput.addEventListener('change', this._onMainScanModifierKeyInputChange.bind(this), false);
-
-        this._settingsController.on('scanInputsChanged', this._onScanInputsChanged.bind(this));
-        this._settingsController.on('optionsChanged', this._onOptionsChanged.bind(this));
-        this._onOptionsChanged({options});
-    }
-
-    async refresh() {
-        const options = await this._settingsController.getOptions();
-        this._onOptionsChanged({options});
-    }
-
-    // Private
-
-    _onScanInputsChanged({source}) {
-        if (source === this) { return; }
-        this.refresh();
-    }
-
-    _onOptionsChanged({options}) {
-        const {scanning: {inputs}} = options;
-        const middleMouseSupportedIndex = this._getIndexOfMiddleMouseButtonScanInput(inputs);
-        const mainScanInputIndex = this._getIndexOfMainScanInput(inputs);
-        const hasMainScanInput = (mainScanInputIndex >= 0);
-
-        let middleMouseSupported = false;
-        if (middleMouseSupportedIndex >= 0) {
-            const includeValues = this._splitValue(inputs[middleMouseSupportedIndex].include);
-            if (includeValues.includes('mouse2')) {
-                middleMouseSupported = true;
-            }
-        }
-
-        let mainScanInput = 'none';
-        if (hasMainScanInput) {
-            const includeValues = this._splitValue(inputs[mainScanInputIndex].include);
-            if (includeValues.length > 0) {
-                mainScanInput = includeValues[0];
-            }
-        } else {
-            mainScanInput = 'other';
-        }
-
-        this._setHasMainScanInput(hasMainScanInput);
-
-        this._middleMouseButtonScan.checked = middleMouseSupported;
-        this._mainScanModifierKeyInput.value = mainScanInput;
-    }
-
-    onMiddleMouseButtonScanChange(e) {
-        const middleMouseSupported = e.currentTarget.checked;
-        this._setMiddleMouseSuppported(middleMouseSupported);
-    }
-
-    _onMainScanModifierKeyInputChange(e) {
-        const mainScanKey = e.currentTarget.value;
-        if (mainScanKey === 'other') { return; }
-        const mainScanInputs = (mainScanKey === 'none' ? [] : [mainScanKey]);
-        this._setMainScanInputs(mainScanInputs);
-    }
-
-    _populateSelect(select, hasOther) {
-        const modifierKeys = [
-            {value: 'none', name: 'No key'}
-        ];
-        for (const value of ['alt', 'ctrl', 'shift', 'meta']) {
-            const name = this._hotkeyUtil.getModifierDisplayValue(value);
-            modifierKeys.push({value, name});
-        }
-
-        if (hasOther) {
-            modifierKeys.push({value: 'other', name: 'Other'});
-        }
-
-        const fragment = document.createDocumentFragment();
-        for (const {value, name} of modifierKeys) {
-            const option = document.createElement('option');
-            option.value = value;
-            option.textContent = name;
-            fragment.appendChild(option);
-        }
-        select.textContent = '';
-        select.appendChild(fragment);
-    }
-
-    _splitValue(value) {
-        return value.split(/[,;\s]+/).map((v) => v.trim().toLowerCase()).filter((v) => v.length > 0);
-    }
-
-    async _setMiddleMouseSuppported(value) {
-        // Find target index
-        const options = await this._settingsController.getOptions();
-        const {scanning: {inputs}} = options;
-        const index = this._getIndexOfMiddleMouseButtonScanInput(inputs);
-
-        if (value) {
-            // Add new
-            if (index >= 0) { return; }
-            let insertionPosition = this._getIndexOfMainScanInput(inputs);
-            insertionPosition = (insertionPosition >= 0 ? insertionPosition + 1 : inputs.length);
-            const input = ScanInputsController.createDefaultMouseInput('mouse2', '');
-            await this._modifyProfileSettings([{
-                action: 'splice',
-                path: 'scanning.inputs',
-                start: insertionPosition,
-                deleteCount: 0,
-                items: [input]
-            }]);
-        } else {
-            // Modify existing
-            if (index < 0) { return; }
-            await this._modifyProfileSettings([{
-                action: 'splice',
-                path: 'scanning.inputs',
-                start: index,
-                deleteCount: 1,
-                items: []
-            }]);
-        }
-    }
-
-    async _setMainScanInputs(value) {
-        value = value.join(', ');
-
-        // Find target index
-        const options = await this._settingsController.getOptions();
-        const {scanning: {inputs}} = options;
-        const index = this._getIndexOfMainScanInput(inputs);
-
-        this._setHasMainScanInput(true);
-
-        if (index < 0) {
-            // Add new
-            const input = ScanInputsController.createDefaultMouseInput(value, 'mouse0');
-            await this._modifyProfileSettings([{
-                action: 'splice',
-                path: 'scanning.inputs',
-                start: inputs.length,
-                deleteCount: 0,
-                items: [input]
-            }]);
-        } else {
-            // Modify existing
-            await this._modifyProfileSettings([{
-                action: 'set',
-                path: `scanning.inputs[${index}].include`,
-                value
-            }]);
-        }
-    }
-
-    async _modifyProfileSettings(targets) {
-        await this._settingsController.modifyProfileSettings(targets);
-        this._settingsController.trigger('scanInputsChanged', {source: this});
-    }
-
-    _getIndexOfMainScanInput(inputs) {
-        for (let i = 0, ii = inputs.length; i < ii; ++i) {
-            const {include, exclude, types: {mouse}} = inputs[i];
-            if (!mouse) { continue; }
-            const includeValues = this._splitValue(include);
-            const excludeValues = this._splitValue(exclude);
-            if (
-                (
-                    includeValues.length === 0 ||
-                    (includeValues.length === 1 && !this._isMouseInput(includeValues[0]))
-                ) &&
-                excludeValues.length === 1 &&
-                excludeValues[0] === 'mouse0'
-            ) {
-                return i;
-            }
-        }
-        return -1;
-    }
-
-    _getIndexOfMiddleMouseButtonScanInput(inputs) {
-        for (let i = 0, ii = inputs.length; i < ii; ++i) {
-            const {include, exclude, types: {mouse}} = inputs[i];
-            if (!mouse) { continue; }
-            const includeValues = this._splitValue(include);
-            const excludeValues = this._splitValue(exclude);
-            if (
-                (includeValues.length === 1 && includeValues[0] === 'mouse2') &&
-                excludeValues.length === 0
-            ) {
-                return i;
-            }
-        }
-        return -1;
-    }
-
-    _isMouseInput(input) {
-        return /^mouse\d+$/.test(input);
-    }
-
-    _setHasMainScanInput(hasMainScanInput) {
-        if (this._mainScanModifierKeyInputHasOther !== hasMainScanInput) { return; }
-        this._mainScanModifierKeyInputHasOther = !hasMainScanInput;
-        this._populateSelect(this._mainScanModifierKeyInput, this._mainScanModifierKeyInputHasOther);
-    }
-}
\ No newline at end of file
diff --git a/ext/bg/js/settings/settings-controller.js b/ext/bg/js/settings/settings-controller.js
deleted file mode 100644
index 11a9435c..00000000
--- a/ext/bg/js/settings/settings-controller.js
+++ /dev/null
@@ -1,210 +0,0 @@
-/*
- * Copyright (C) 2020-2021  Yomichan Authors
- *
- * This program is free software: you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation, either version 3 of the License, or
- * (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program.  If not, see <https://www.gnu.org/licenses/>.
- */
-
-/* global
- * HtmlTemplateCollection
- * OptionsUtil
- * PermissionsUtil
- * api
- */
-
-class SettingsController extends EventDispatcher {
-    constructor(profileIndex=0) {
-        super();
-        this._profileIndex = profileIndex;
-        this._source = generateId(16);
-        this._pageExitPreventions = new Set();
-        this._pageExitPreventionEventListeners = new EventListenerCollection();
-        this._templates = new HtmlTemplateCollection(document);
-        this._permissionsUtil = new PermissionsUtil();
-    }
-
-    get source() {
-        return this._source;
-    }
-
-    get profileIndex() {
-        return this._profileIndex;
-    }
-
-    set profileIndex(value) {
-        if (this._profileIndex === value) { return; }
-        this._setProfileIndex(value);
-    }
-
-    get permissionsUtil() {
-        return this._permissionsUtil;
-    }
-
-    prepare() {
-        yomichan.on('optionsUpdated', this._onOptionsUpdated.bind(this));
-        chrome.permissions.onAdded.addListener(this._onPermissionsChanged.bind(this));
-        chrome.permissions.onRemoved.addListener(this._onPermissionsChanged.bind(this));
-    }
-
-    async refresh() {
-        await this._onOptionsUpdatedInternal();
-    }
-
-    async getOptions() {
-        const optionsContext = this.getOptionsContext();
-        return await api.optionsGet(optionsContext);
-    }
-
-    async getOptionsFull() {
-        return await api.optionsGetFull();
-    }
-
-    async setAllSettings(value) {
-        const profileIndex = value.profileCurrent;
-        await api.setAllSettings(value, this._source);
-        this._setProfileIndex(profileIndex);
-    }
-
-    async getSettings(targets) {
-        return await this._getSettings(targets, {});
-    }
-
-    async getGlobalSettings(targets) {
-        return await this._getSettings(targets, {scope: 'global'});
-    }
-
-    async getProfileSettings(targets) {
-        return await this._getSettings(targets, {scope: 'profile'});
-    }
-
-    async modifySettings(targets) {
-        return await this._modifySettings(targets, {});
-    }
-
-    async modifyGlobalSettings(targets) {
-        return await this._modifySettings(targets, {scope: 'global'});
-    }
-
-    async modifyProfileSettings(targets) {
-        return await this._modifySettings(targets, {scope: 'profile'});
-    }
-
-    async setGlobalSetting(path, value) {
-        return await this.modifyGlobalSettings([{action: 'set', path, value}]);
-    }
-
-    async setProfileSetting(path, value) {
-        return await this.modifyProfileSettings([{action: 'set', path, value}]);
-    }
-
-    async getDictionaryInfo() {
-        return await api.getDictionaryInfo();
-    }
-
-    getOptionsContext() {
-        return {index: this._profileIndex};
-    }
-
-    preventPageExit() {
-        const obj = {end: null};
-        obj.end = this._endPreventPageExit.bind(this, obj);
-        if (this._pageExitPreventionEventListeners.size === 0) {
-            this._pageExitPreventionEventListeners.addEventListener(window, 'beforeunload', this._onBeforeUnload.bind(this), false);
-        }
-        this._pageExitPreventions.add(obj);
-        return obj;
-    }
-
-    instantiateTemplate(name) {
-        return this._templates.instantiate(name);
-    }
-
-    instantiateTemplateFragment(name) {
-        return this._templates.instantiateFragment(name);
-    }
-
-    async getDefaultOptions() {
-        const optionsUtil = new OptionsUtil();
-        await optionsUtil.prepare();
-        const optionsFull = optionsUtil.getDefault();
-        return optionsFull;
-    }
-
-    // Private
-
-    _setProfileIndex(value) {
-        this._profileIndex = value;
-        this.trigger('optionsContextChanged');
-        this._onOptionsUpdatedInternal();
-    }
-
-    _onOptionsUpdated({source}) {
-        if (source === this._source) { return; }
-        this._onOptionsUpdatedInternal();
-    }
-
-    async _onOptionsUpdatedInternal() {
-        const optionsContext = this.getOptionsContext();
-        const options = await this.getOptions();
-        this.trigger('optionsChanged', {options, optionsContext});
-    }
-
-    _setupTargets(targets, extraFields) {
-        return targets.map((target) => {
-            target = Object.assign({}, extraFields, target);
-            if (target.scope === 'profile') {
-                target.optionsContext = this.getOptionsContext();
-            }
-            return target;
-        });
-    }
-
-    async _getSettings(targets, extraFields) {
-        targets = this._setupTargets(targets, extraFields);
-        return await api.getSettings(targets);
-    }
-
-    async _modifySettings(targets, extraFields) {
-        targets = this._setupTargets(targets, extraFields);
-        return await api.modifySettings(targets, this._source);
-    }
-
-    _onBeforeUnload(e) {
-        if (this._pageExitPreventions.size === 0) {
-            return;
-        }
-
-        e.preventDefault();
-        e.returnValue = '';
-        return '';
-    }
-
-    _endPreventPageExit(obj) {
-        this._pageExitPreventions.delete(obj);
-        if (this._pageExitPreventions.size === 0) {
-            this._pageExitPreventionEventListeners.removeAllEventListeners();
-        }
-    }
-
-    _onPermissionsChanged() {
-        this._triggerPermissionsChanged();
-    }
-
-    async _triggerPermissionsChanged() {
-        const event = 'permissionsChanged';
-        if (!this.hasListeners(event)) { return; }
-
-        const permissions = await this._permissionsUtil.getAllPermissions();
-        this.trigger(event, {permissions});
-    }
-}
diff --git a/ext/bg/js/settings/status-footer.js b/ext/bg/js/settings/status-footer.js
deleted file mode 100644
index c03e6775..00000000
--- a/ext/bg/js/settings/status-footer.js
+++ /dev/null
@@ -1,84 +0,0 @@
-/*
- * Copyright (C) 2020-2021  Yomichan Authors
- *
- * This program is free software: you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation, either version 3 of the License, or
- * (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program.  If not, see <https://www.gnu.org/licenses/>.
- */
-
-/* global
- * PanelElement
- */
-
-class StatusFooter extends PanelElement {
-    constructor(node) {
-        super({
-            node,
-            closingAnimationDuration: 375 // Milliseconds; includes buffer
-        });
-        this._body = node.querySelector('.status-footer');
-    }
-
-    prepare() {
-        this.on('closeCompleted', this._onCloseCompleted.bind(this), false);
-        this._body.querySelector('.status-footer-header-close').addEventListener('click', this._onCloseClick.bind(this), false);
-    }
-
-    getTaskContainer(selector) {
-        return this._body.querySelector(selector);
-    }
-
-    isTaskActive(selector) {
-        const target = this.getTaskContainer(selector);
-        return (target !== null && target.dataset.active);
-    }
-
-    setTaskActive(selector, active) {
-        const target = this.getTaskContainer(selector);
-        if (target === null) { return; }
-
-        const activeElements = new Set();
-        for (const element of this._body.querySelectorAll('.status-footer-item')) {
-            if (element.dataset.active) {
-                activeElements.add(element);
-            }
-        }
-
-        if (active) {
-            target.dataset.active = 'true';
-            if (!this.isVisible()) {
-                this.setVisible(true);
-            }
-            target.hidden = false;
-        } else {
-            delete target.dataset.active;
-            if (activeElements.size <= 1) {
-                this.setVisible(false);
-            }
-        }
-    }
-
-    // Private
-
-    _onCloseClick(e) {
-        e.preventDefault();
-        this.setVisible(false);
-    }
-
-    _onCloseCompleted() {
-        for (const element of this._body.querySelectorAll('.status-footer-item')) {
-            if (!element.dataset.active) {
-                element.hidden = true;
-            }
-        }
-    }
-}
diff --git a/ext/bg/js/settings/storage-controller.js b/ext/bg/js/settings/storage-controller.js
deleted file mode 100644
index c27c8690..00000000
--- a/ext/bg/js/settings/storage-controller.js
+++ /dev/null
@@ -1,183 +0,0 @@
-/*
- * Copyright (C) 2019-2021  Yomichan Authors
- *
- * This program is free software: you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation, either version 3 of the License, or
- * (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program.  If not, see <https://www.gnu.org/licenses/>.
- */
-
-class StorageController {
-    constructor() {
-        this._mostRecentStorageEstimate = null;
-        this._storageEstimateFailed = false;
-        this._isUpdating = false;
-        this._persistentStorageCheckbox = false;
-        this._storageUsageNode = null;
-        this._storageQuotaNode = null;
-        this._storageUseFiniteNodes = null;
-        this._storageUseInfiniteNodes = null;
-        this._storageUseValidNodes = null;
-        this._storageUseInvalidNodes = null;
-    }
-
-    prepare() {
-        this._persistentStorageCheckbox = document.querySelector('#storage-persistent-checkbox');
-        this._storageUsageNodes = document.querySelectorAll('.storage-usage');
-        this._storageQuotaNodes = document.querySelectorAll('.storage-quota');
-        this._storageUseFiniteNodes = document.querySelectorAll('.storage-use-finite');
-        this._storageUseInfiniteNodes = document.querySelectorAll('.storage-use-infinite');
-        this._storageUseValidNodes = document.querySelectorAll('.storage-use-valid');
-        this._storageUseInvalidNodes = document.querySelectorAll('.storage-use-invalid');
-
-        this._preparePersistentStorage();
-        this.updateStats();
-        this._persistentStorageCheckbox.addEventListener('change', this._onPersistentStorageCheckboxChange.bind(this), false);
-        document.querySelector('#storage-refresh').addEventListener('click', this.updateStats.bind(this), false);
-    }
-
-    async updateStats() {
-        if (this._isUpdating) { return; }
-
-        try {
-            this._isUpdating = true;
-
-            const estimate = await this._storageEstimate();
-            const valid = (estimate !== null);
-
-            // Firefox reports usage as 0 when persistent storage is enabled.
-            const finite = valid && (estimate.usage > 0 || !(await this._isStoragePeristent()));
-            if (finite) {
-                for (const node of this._storageUsageNodes) {
-                    node.textContent = this._bytesToLabeledString(estimate.usage);
-                }
-                for (const node of this._storageQuotaNodes) {
-                    node.textContent = this._bytesToLabeledString(estimate.quota);
-                }
-            }
-
-            this._setElementsVisible(this._storageUseFiniteNodes, valid && finite);
-            this._setElementsVisible(this._storageUseInfiniteNodes, valid && !finite);
-            this._setElementsVisible(this._storageUseValidNodes, valid);
-            this._setElementsVisible(this._storageUseInvalidNodes, !valid);
-
-            return valid;
-        } finally {
-            this._isUpdating = false;
-        }
-    }
-
-    // Private
-
-    async _preparePersistentStorage() {
-        if (!(navigator.storage && navigator.storage.persist)) {
-            // Not supported
-            return;
-        }
-
-        const info = document.querySelector('#storage-persistent-info');
-        if (info !== null) { info.hidden = false; }
-
-        const isStoragePeristent = await this._isStoragePeristent();
-        this._updateCheckbox(isStoragePeristent);
-
-        const button = document.querySelector('#storage-persistent-button');
-        if (button !== null) {
-            button.hidden = false;
-            button.addEventListener('click', this._onPersistStorageButtonClick.bind(this), false);
-        }
-    }
-
-    _onPersistentStorageCheckboxChange(e) {
-        const node = e.currentTarget;
-        if (!node.checked) {
-            node.checked = true;
-            return;
-        }
-        this._attemptPersistStorage();
-    }
-
-    _onPersistStorageButtonClick() {
-        const {checked} = this._persistentStorageCheckbox;
-        if (checked) { return; }
-        this._persistentStorageCheckbox.checked = !checked;
-        this._persistentStorageCheckbox.dispatchEvent(new Event('change'));
-    }
-
-    async _attemptPersistStorage() {
-        if (await this._isStoragePeristent()) { return; }
-
-        let isStoragePeristent = false;
-        try {
-            isStoragePeristent = await navigator.storage.persist();
-        } catch (e) {
-            // NOP
-        }
-
-        this._updateCheckbox(isStoragePeristent);
-
-        if (isStoragePeristent) {
-            this.updateStats();
-        } else {
-            const node = document.querySelector('#storage-persistent-fail-warning');
-            if (node !== null) { node.hidden = false; }
-        }
-    }
-
-    async _storageEstimate() {
-        if (this._storageEstimateFailed && this._mostRecentStorageEstimate === null) {
-            return null;
-        }
-        try {
-            const value = await navigator.storage.estimate();
-            this._mostRecentStorageEstimate = value;
-            return value;
-        } catch (e) {
-            this._storageEstimateFailed = true;
-        }
-        return null;
-    }
-
-    _bytesToLabeledString(size) {
-        const base = 1000;
-        const labels = [' bytes', 'KB', 'MB', 'GB', 'TB'];
-        const maxLabelIndex = labels.length - 1;
-        let labelIndex = 0;
-        while (size >= base && labelIndex < maxLabelIndex) {
-            size /= base;
-            ++labelIndex;
-        }
-        const label = labelIndex === 0 ? `${size}` : size.toFixed(1);
-        return `${label}${labels[labelIndex]}`;
-    }
-
-    async _isStoragePeristent() {
-        try {
-            return await navigator.storage.persisted();
-        } catch (e) {
-            // NOP
-        }
-        return false;
-    }
-
-    _updateCheckbox(isStoragePeristent) {
-        const checkbox = this._persistentStorageCheckbox;
-        checkbox.checked = isStoragePeristent;
-        checkbox.readOnly = isStoragePeristent;
-    }
-
-    _setElementsVisible(elements, visible) {
-        visible = !visible;
-        for (const element of elements) {
-            element.hidden = visible;
-        }
-    }
-}
diff --git a/ext/bg/js/settings2/extension-keyboard-shortcuts-controller.js b/ext/bg/js/settings2/extension-keyboard-shortcuts-controller.js
deleted file mode 100644
index 9c930703..00000000
--- a/ext/bg/js/settings2/extension-keyboard-shortcuts-controller.js
+++ /dev/null
@@ -1,292 +0,0 @@
-/*
- * Copyright (C) 2021  Yomichan Authors
- *
- * This program is free software: you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation, either version 3 of the License, or
- * (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program.  If not, see <https://www.gnu.org/licenses/>.
- */
-
-/* global
- * HotkeyUtil
- * KeyboardMouseInputField
- * api
- */
-
-class ExtensionKeyboardShortcutController {
-    constructor(settingsController) {
-        this._settingsController = settingsController;
-        this._resetButton = null;
-        this._clearButton = null;
-        this._listContainer = null;
-        this._hotkeyUtil = new HotkeyUtil();
-        this._os = null;
-        this._entries = [];
-    }
-
-    get hotkeyUtil() {
-        return this._hotkeyUtil;
-    }
-
-    async prepare() {
-        this._resetButton = document.querySelector('#extension-hotkey-list-reset-all');
-        this._clearButton = document.querySelector('#extension-hotkey-list-clear-all');
-        this._listContainer = document.querySelector('#extension-hotkey-list');
-
-        const canResetCommands = this.canResetCommands();
-        const canModifyCommands = this.canModifyCommands();
-        this._resetButton.hidden = !canResetCommands;
-        this._clearButton.hidden = !canModifyCommands;
-
-        if (canResetCommands) {
-            this._resetButton.addEventListener('click', this._onResetClick.bind(this));
-        }
-        if (canModifyCommands) {
-            this._clearButton.addEventListener('click', this._onClearClick.bind(this));
-        }
-
-        const {platform: {os}} = await api.getEnvironmentInfo();
-        this._os = os;
-        this._hotkeyUtil.os = os;
-
-        const commands = await this._getCommands();
-        this._setupCommands(commands);
-    }
-
-    async resetCommand(name) {
-        await this._resetCommand(name);
-
-        let key = null;
-        let modifiers = [];
-
-        const commands = await this._getCommands();
-        for (const {name: name2, shortcut} of commands) {
-            if (name === name2) {
-                ({key, modifiers} = this._hotkeyUtil.convertCommandToInput(shortcut));
-                break;
-            }
-        }
-
-        return {key, modifiers};
-    }
-
-    async updateCommand(name, key, modifiers) {
-        // Firefox-only; uses Promise API
-        const shortcut = this._hotkeyUtil.convertInputToCommand(key, modifiers);
-        return await chrome.commands.update({name, shortcut});
-    }
-
-    canResetCommands() {
-        return isObject(chrome.commands) && typeof chrome.commands.reset === 'function';
-    }
-
-    canModifyCommands() {
-        return isObject(chrome.commands) && typeof chrome.commands.update === 'function';
-    }
-
-    // Add
-
-    _onResetClick(e) {
-        e.preventDefault();
-        this._resetAllCommands();
-    }
-
-    _onClearClick(e) {
-        e.preventDefault();
-        this._clearAllCommands();
-    }
-
-    _getCommands() {
-        return new Promise((resolve, reject) => {
-            if (!(isObject(chrome.commands) && typeof chrome.commands.getAll === 'function')) {
-                resolve([]);
-                return;
-            }
-
-            chrome.commands.getAll((result) => {
-                const e = chrome.runtime.lastError;
-                if (e) {
-                    reject(new Error(e.message));
-                } else {
-                    resolve(result);
-                }
-            });
-        });
-    }
-
-    _setupCommands(commands) {
-        for (const entry of this._entries) {
-            entry.cleanup();
-        }
-        this._entries = [];
-
-        const fragment = document.createDocumentFragment();
-
-        for (const {name, description, shortcut} of commands) {
-            if (name.startsWith('_')) { continue; }
-
-            const {key, modifiers} = this._hotkeyUtil.convertCommandToInput(shortcut);
-
-            const node = this._settingsController.instantiateTemplate('extension-hotkey-list-item');
-            fragment.appendChild(node);
-
-            const entry = new ExtensionKeyboardShortcutHotkeyEntry(this, node, name, description, key, modifiers, this._os);
-            entry.prepare();
-            this._entries.push(entry);
-        }
-
-        this._listContainer.textContent = '';
-        this._listContainer.appendChild(fragment);
-    }
-
-    async _resetAllCommands() {
-        if (!this.canModifyCommands()) { return; }
-
-        let commands = await this._getCommands();
-        const promises = [];
-
-        for (const {name} of commands) {
-            if (name.startsWith('_')) { continue; }
-            promises.push(this._resetCommand(name));
-        }
-
-        await Promise.all(promises);
-
-        commands = await this._getCommands();
-        this._setupCommands(commands);
-    }
-
-    async _clearAllCommands() {
-        if (!this.canModifyCommands()) { return; }
-
-        let commands = await this._getCommands();
-        const promises = [];
-
-        for (const {name} of commands) {
-            if (name.startsWith('_')) { continue; }
-            promises.push(this.updateCommand(name, null, []));
-        }
-
-        await Promise.all(promises);
-
-        commands = await this._getCommands();
-        this._setupCommands(commands);
-    }
-
-    async _resetCommand(name) {
-        // Firefox-only; uses Promise API
-        return await chrome.commands.reset(name);
-    }
-}
-
-class ExtensionKeyboardShortcutHotkeyEntry {
-    constructor(parent, node, name, description, key, modifiers, os) {
-        this._parent = parent;
-        this._node = node;
-        this._name = name;
-        this._description = description;
-        this._key = key;
-        this._modifiers = modifiers;
-        this._os = os;
-        this._input = null;
-        this._inputField = null;
-        this._eventListeners = new EventListenerCollection();
-    }
-
-    prepare() {
-        this._node.querySelector('.settings-item-label').textContent = this._description || this._name;
-
-        const button = this._node.querySelector('.extension-hotkey-list-item-button');
-        const input = this._node.querySelector('input');
-
-        this._input = input;
-
-        if (this._parent.canModifyCommands()) {
-            this._inputField = new KeyboardMouseInputField(input, null, this._os);
-            this._inputField.prepare(this._key, this._modifiers, false, true);
-            this._eventListeners.on(this._inputField, 'change', this._onInputFieldChange.bind(this));
-            this._eventListeners.addEventListener(button, 'menuClose', this._onMenuClose.bind(this));
-            this._eventListeners.addEventListener(input, 'blur', this._onInputFieldBlur.bind(this));
-        } else {
-            input.readOnly = true;
-            input.value = this._parent.hotkeyUtil.getInputDisplayValue(this._key, this._modifiers);
-            button.hidden = true;
-        }
-    }
-
-    cleanup() {
-        this._eventListeners.removeAllEventListeners();
-        if (this._node.parentNode !== null) {
-            this._node.parentNode.removeChild(this._node);
-        }
-        if (this._inputField !== null) {
-            this._inputField.cleanup();
-            this._inputField = null;
-        }
-    }
-
-    // Private
-
-    _onInputFieldChange(e) {
-        const {key, modifiers} = e;
-        this._tryUpdateInput(key, modifiers, false);
-    }
-
-    _onInputFieldBlur() {
-        this._updateInput();
-    }
-
-    _onMenuClose(e) {
-        switch (e.detail.action) {
-            case 'clearInput':
-                this._tryUpdateInput(null, [], true);
-                break;
-            case 'resetInput':
-                this._resetInput();
-                break;
-        }
-    }
-
-    _updateInput() {
-        this._inputField.setInput(this._key, this._modifiers);
-        delete this._input.dataset.invalid;
-    }
-
-    async _tryUpdateInput(key, modifiers, updateInput) {
-        let okay = (key === null ? (modifiers.length === 0) : (modifiers.length !== 0));
-        if (okay) {
-            try {
-                await this._parent.updateCommand(this._name, key, modifiers);
-            } catch (e) {
-                okay = false;
-            }
-        }
-
-        if (okay) {
-            this._key = key;
-            this._modifiers = modifiers;
-            delete this._input.dataset.invalid;
-        } else {
-            this._input.dataset.invalid = 'true';
-        }
-
-        if (updateInput) {
-            this._updateInput();
-        }
-    }
-
-    async _resetInput() {
-        const {key, modifiers} = await this._parent.resetCommand(this._name);
-        this._key = key;
-        this._modifiers = modifiers;
-        this._updateInput();
-    }
-}
diff --git a/ext/bg/js/settings2/keyboard-shortcuts-controller.js b/ext/bg/js/settings2/keyboard-shortcuts-controller.js
deleted file mode 100644
index 0dcfa2ee..00000000
--- a/ext/bg/js/settings2/keyboard-shortcuts-controller.js
+++ /dev/null
@@ -1,368 +0,0 @@
-/*
- * Copyright (C) 2021  Yomichan Authors
- *
- * This program is free software: you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation, either version 3 of the License, or
- * (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program.  If not, see <https://www.gnu.org/licenses/>.
- */
-
-/* global
- * KeyboardMouseInputField
- * api
- */
-
-class KeyboardShortcutController {
-    constructor(settingsController) {
-        this._settingsController = settingsController;
-        this._entries = [];
-        this._os = null;
-        this._addButton = null;
-        this._resetButton = null;
-        this._listContainer = null;
-        this._emptyIndicator = null;
-        this._stringComparer = new Intl.Collator('en-US'); // Invariant locale
-        this._scrollContainer = null;
-    }
-
-    get settingsController() {
-        return this._settingsController;
-    }
-
-    async prepare() {
-        const {platform: {os}} = await api.getEnvironmentInfo();
-        this._os = os;
-
-        this._addButton = document.querySelector('#hotkey-list-add');
-        this._resetButton = document.querySelector('#hotkey-list-reset');
-        this._listContainer = document.querySelector('#hotkey-list');
-        this._emptyIndicator = document.querySelector('#hotkey-list-empty');
-        this._scrollContainer = document.querySelector('#keyboard-shortcuts-modal .modal-body');
-
-        this._addButton.addEventListener('click', this._onAddClick.bind(this));
-        this._resetButton.addEventListener('click', this._onResetClick.bind(this));
-        this._settingsController.on('optionsChanged', this._onOptionsChanged.bind(this));
-
-        await this._updateOptions();
-    }
-
-    async addEntry(terminationCharacterEntry) {
-        const options = await this._settingsController.getOptions();
-        const {inputs: {hotkeys}} = options;
-
-        await this._settingsController.modifyProfileSettings([{
-            action: 'splice',
-            path: 'inputs.hotkeys',
-            start: hotkeys.length,
-            deleteCount: 0,
-            items: [terminationCharacterEntry]
-        }]);
-
-        await this._updateOptions();
-        this._scrollContainer.scrollTop = this._scrollContainer.scrollHeight;
-    }
-
-    async deleteEntry(index) {
-        const options = await this._settingsController.getOptions();
-        const {inputs: {hotkeys}} = options;
-
-        if (index < 0 || index >= hotkeys.length) { return false; }
-
-        await this._settingsController.modifyProfileSettings([{
-            action: 'splice',
-            path: 'inputs.hotkeys',
-            start: index,
-            deleteCount: 1,
-            items: []
-        }]);
-
-        await this._updateOptions();
-        return true;
-    }
-
-    async modifyProfileSettings(targets) {
-        return await this._settingsController.modifyProfileSettings(targets);
-    }
-
-    async getDefaultHotkeys() {
-        const defaultOptions = await this._settingsController.getDefaultOptions();
-        return defaultOptions.profiles[0].options.inputs.hotkeys;
-    }
-
-    // Private
-
-    _onOptionsChanged({options}) {
-        for (const entry of this._entries) {
-            entry.cleanup();
-        }
-
-        this._entries = [];
-        const {inputs: {hotkeys}} = options;
-        const fragment = document.createDocumentFragment();
-
-        for (let i = 0, ii = hotkeys.length; i < ii; ++i) {
-            const hotkeyEntry = hotkeys[i];
-            const node = this._settingsController.instantiateTemplate('hotkey-list-item');
-            fragment.appendChild(node);
-            const entry = new KeyboardShortcutHotkeyEntry(this, hotkeyEntry, i, node, this._os, this._stringComparer);
-            this._entries.push(entry);
-            entry.prepare();
-        }
-
-        this._listContainer.appendChild(fragment);
-        this._listContainer.hidden = (hotkeys.length === 0);
-        this._emptyIndicator.hidden = (hotkeys.length !== 0);
-    }
-
-    _onAddClick(e) {
-        e.preventDefault();
-        this._addNewEntry();
-    }
-
-    _onResetClick(e) {
-        e.preventDefault();
-        this._reset();
-    }
-
-    async _addNewEntry() {
-        const newEntry = {
-            action: '',
-            key: null,
-            modifiers: [],
-            scopes: ['popup', 'search'],
-            enabled: true
-        };
-        return await this.addEntry(newEntry);
-    }
-
-    async _updateOptions() {
-        const options = await this._settingsController.getOptions();
-        this._onOptionsChanged({options});
-    }
-
-    async _reset() {
-        const value = await this.getDefaultHotkeys();
-        await this._settingsController.setProfileSetting('inputs.hotkeys', value);
-        await this._updateOptions();
-    }
-}
-
-class KeyboardShortcutHotkeyEntry {
-    constructor(parent, data, index, node, os, stringComparer) {
-        this._parent = parent;
-        this._data = data;
-        this._index = index;
-        this._node = node;
-        this._os = os;
-        this._eventListeners = new EventListenerCollection();
-        this._inputField = null;
-        this._actionSelect = null;
-        this._scopeCheckboxes = null;
-        this._scopeCheckboxContainers = null;
-        this._basePath = `inputs.hotkeys[${this._index}]`;
-        this._stringComparer = stringComparer;
-    }
-
-    prepare() {
-        const node = this._node;
-
-        const menuButton = node.querySelector('.hotkey-list-item-button');
-        const input = node.querySelector('.hotkey-list-item-input');
-        const action = node.querySelector('.hotkey-list-item-action');
-        const scopeCheckboxes = node.querySelectorAll('.hotkey-scope-checkbox');
-        const scopeCheckboxContainers = node.querySelectorAll('.hotkey-scope-checkbox-container');
-        const enabledToggle = node.querySelector('.hotkey-list-item-enabled');
-
-        this._actionSelect = action;
-        this._scopeCheckboxes = scopeCheckboxes;
-        this._scopeCheckboxContainers = scopeCheckboxContainers;
-
-        this._inputField = new KeyboardMouseInputField(input, null, this._os);
-        this._inputField.prepare(this._data.key, this._data.modifiers, false, true);
-
-        action.value = this._data.action;
-
-        enabledToggle.checked = this._data.enabled;
-        enabledToggle.dataset.setting = `${this._basePath}.enabled`;
-
-        this._updateCheckboxVisibility();
-        this._updateCheckboxStates();
-
-        for (const scopeCheckbox of scopeCheckboxes) {
-            this._eventListeners.addEventListener(scopeCheckbox, 'change', this._onScopeCheckboxChange.bind(this), false);
-        }
-        this._eventListeners.addEventListener(menuButton, 'menuClose', this._onMenuClose.bind(this), false);
-        this._eventListeners.addEventListener(this._actionSelect, 'change', this._onActionSelectChange.bind(this), false);
-        this._eventListeners.on(this._inputField, 'change', this._onInputFieldChange.bind(this));
-    }
-
-    cleanup() {
-        this._eventListeners.removeAllEventListeners();
-        this._inputField.cleanup();
-        if (this._node.parentNode !== null) {
-            this._node.parentNode.removeChild(this._node);
-        }
-    }
-
-    // Private
-
-    _onMenuClose(e) {
-        switch (e.detail.action) {
-            case 'delete':
-                this._delete();
-                break;
-            case 'clearInputs':
-                this._inputField.clearInputs();
-                break;
-            case 'resetInput':
-                this._resetInput();
-                break;
-        }
-    }
-
-    _onInputFieldChange({key, modifiers}) {
-        this._setKeyAndModifiers(key, modifiers);
-    }
-
-    _onScopeCheckboxChange(e) {
-        const node = e.currentTarget;
-        const {scope} = node.dataset;
-        if (typeof scope !== 'string') { return; }
-        this._setScopeEnabled(scope, node.checked);
-    }
-
-    _onActionSelectChange(e) {
-        const value = e.currentTarget.value;
-        this._setAction(value);
-    }
-
-    async _delete() {
-        this._parent.deleteEntry(this._index);
-    }
-
-    async _setKeyAndModifiers(key, modifiers) {
-        this._data.key = key;
-        this._data.modifiers = modifiers;
-        await this._modifyProfileSettings([
-            {
-                action: 'set',
-                path: `${this._basePath}.key`,
-                value: key
-            },
-            {
-                action: 'set',
-                path: `${this._basePath}.modifiers`,
-                value: modifiers
-            }
-        ]);
-    }
-
-    async _setScopeEnabled(scope, enabled) {
-        const scopes = this._data.scopes;
-        const index = scopes.indexOf(scope);
-        if ((index >= 0) === enabled) { return; }
-
-        if (enabled) {
-            scopes.push(scope);
-            const stringComparer = this._stringComparer;
-            scopes.sort((scope1, scope2) => stringComparer.compare(scope1, scope2));
-        } else {
-            scopes.splice(index, 1);
-        }
-
-        await this._modifyProfileSettings([{
-            action: 'set',
-            path: `${this._basePath}.scopes`,
-            value: scopes
-        }]);
-    }
-
-    async _modifyProfileSettings(targets) {
-        return await this._parent.settingsController.modifyProfileSettings(targets);
-    }
-
-    async _resetInput() {
-        const defaultHotkeys = await this._parent.getDefaultHotkeys();
-        const defaultValue = this._getDefaultKeyAndModifiers(defaultHotkeys, this._data.action);
-        if (defaultValue === null) { return; }
-
-        const {key, modifiers} = defaultValue;
-        await this._setKeyAndModifiers(key, modifiers);
-        this._inputField.setInput(key, modifiers);
-    }
-
-    _getDefaultKeyAndModifiers(defaultHotkeys, action) {
-        for (const {action: action2, key, modifiers} of defaultHotkeys) {
-            if (action2 !== action) { continue; }
-            return {modifiers, key};
-        }
-        return null;
-    }
-
-    async _setAction(value) {
-        const targets = [{
-            action: 'set',
-            path: `${this._basePath}.action`,
-            value
-        }];
-
-        this._data.action = value;
-
-        const scopes = this._data.scopes;
-        const validScopes = this._getValidScopesForAction(value);
-        if (validScopes !== null) {
-            let changed = false;
-            for (let i = 0, ii = scopes.length; i < ii; ++i) {
-                if (!validScopes.has(scopes[i])) {
-                    scopes.splice(i, 1);
-                    --i;
-                    --ii;
-                    changed = true;
-                }
-            }
-            if (changed) {
-                if (scopes.length === 0) {
-                    scopes.push(...validScopes);
-                }
-                targets.push({
-                    action: 'set',
-                    path: `${this._basePath}.scopes`,
-                    value: scopes
-                });
-                this._updateCheckboxStates();
-            }
-        }
-
-        await this._modifyProfileSettings(targets);
-
-        this._updateCheckboxVisibility();
-    }
-
-    _updateCheckboxStates() {
-        const scopes = this._data.scopes;
-        for (const scopeCheckbox of this._scopeCheckboxes) {
-            scopeCheckbox.checked = scopes.includes(scopeCheckbox.dataset.scope);
-        }
-    }
-
-    _updateCheckboxVisibility() {
-        const validScopes = this._getValidScopesForAction(this._data.action);
-        for (const node of this._scopeCheckboxContainers) {
-            node.hidden = !(validScopes === null || validScopes.has(node.dataset.scope));
-        }
-    }
-
-    _getValidScopesForAction(action) {
-        const optionNode = this._actionSelect.querySelector(`option[value="${action}"]`);
-        const scopesString = (optionNode !== null ? optionNode.dataset.scopes : void 0);
-        return (typeof scopesString === 'string' ? new Set(scopesString.split(' ')) : null);
-    }
-}
diff --git a/ext/bg/js/settings2/mecab-controller.js b/ext/bg/js/settings2/mecab-controller.js
deleted file mode 100644
index ff2a4a66..00000000
--- a/ext/bg/js/settings2/mecab-controller.js
+++ /dev/null
@@ -1,67 +0,0 @@
-/*
- * Copyright (C) 2021  Yomichan Authors
- *
- * This program is free software: you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation, either version 3 of the License, or
- * (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program.  If not, see <https://www.gnu.org/licenses/>.
- */
-
-/* global
- * api
- */
-
-class MecabController {
-    constructor(settingsController) {
-        this._settingsController = settingsController;
-        this._testButton = null;
-        this._resultsContainer = null;
-        this._testActive = false;
-    }
-
-    prepare() {
-        this._testButton = document.querySelector('#test-mecab-button');
-        this._resultsContainer = document.querySelector('#test-mecab-results');
-
-        this._testButton.addEventListener('click', this._onTestButtonClick.bind(this), false);
-    }
-
-    // Private
-
-    _onTestButtonClick(e) {
-        e.preventDefault();
-        this._testMecab();
-    }
-
-    async _testMecab() {
-        if (this._testActive) { return; }
-
-        try {
-            this._testActive = true;
-            this._testButton.disabled = true;
-            this._resultsContainer.textContent = '';
-            this._resultsContainer.hidden = true;
-            await api.testMecab();
-            this._setStatus('Connection was successful', false);
-        } catch (e) {
-            this._setStatus(e.message, true);
-        } finally {
-            this._testActive = false;
-            this._testButton.disabled = false;
-        }
-    }
-
-    _setStatus(message, isError) {
-        this._resultsContainer.textContent = message;
-        this._resultsContainer.hidden = false;
-        this._resultsContainer.classList.toggle('danger-text', isError);
-    }
-}
diff --git a/ext/bg/js/settings2/nested-popups-controller.js b/ext/bg/js/settings2/nested-popups-controller.js
deleted file mode 100644
index 1ebc7389..00000000
--- a/ext/bg/js/settings2/nested-popups-controller.js
+++ /dev/null
@@ -1,71 +0,0 @@
-/*
- * Copyright (C) 2020-2021  Yomichan Authors
- *
- * This program is free software: you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation, either version 3 of the License, or
- * (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program.  If not, see <https://www.gnu.org/licenses/>.
- */
-
-/* global
- * DOMDataBinder
- */
-
-class NestedPopupsController {
-    constructor(settingsController) {
-        this._settingsController = settingsController;
-        this._popupNestingMaxDepth = 0;
-    }
-
-    async prepare() {
-        this._nestedPopupsEnabled = document.querySelector('#nested-popups-enabled');
-        this._nestedPopupsCount = document.querySelector('#nested-popups-count');
-        this._nestedPopupsEnabledMoreOptions = document.querySelector('#nested-popups-enabled-more-options');
-
-        const options = await this._settingsController.getOptions();
-
-        this._nestedPopupsEnabled.addEventListener('change', this._onNestedPopupsEnabledChange.bind(this), false);
-        this._nestedPopupsCount.addEventListener('change', this._onNestedPopupsCountChange.bind(this), false);
-        this._settingsController.on('optionsChanged', this._onOptionsChanged.bind(this));
-        this._onOptionsChanged({options});
-    }
-
-    // Private
-
-    _onOptionsChanged({options}) {
-        this._updatePopupNestingMaxDepth(options.scanning.popupNestingMaxDepth);
-    }
-
-    _onNestedPopupsEnabledChange(e) {
-        const value = e.currentTarget.checked;
-        if (value && this._popupNestingMaxDepth > 0) { return; }
-        this._setPopupNestingMaxDepth(value ? 1 : 0);
-    }
-
-    _onNestedPopupsCountChange(e) {
-        const node = e.currentTarget;
-        const value = Math.max(1, DOMDataBinder.convertToNumber(node.value, node));
-        this._setPopupNestingMaxDepth(value);
-    }
-
-    _updatePopupNestingMaxDepth(value) {
-        const enabled = (value > 0);
-        this._popupNestingMaxDepth = value;
-        this._nestedPopupsEnabled.checked = enabled;
-        this._nestedPopupsCount.value = `${value}`;
-        this._nestedPopupsEnabledMoreOptions.hidden = !enabled;
-    }
-
-    async _setPopupNestingMaxDepth(value) {
-        this._updatePopupNestingMaxDepth(value);
-        await this._settingsController.setProfileSetting('scanning.popupNestingMaxDepth', value);
-    }
-}
diff --git a/ext/bg/js/settings2/popup-window-controller.js b/ext/bg/js/settings2/popup-window-controller.js
deleted file mode 100644
index cc83db68..00000000
--- a/ext/bg/js/settings2/popup-window-controller.js
+++ /dev/null
@@ -1,38 +0,0 @@
-/*
- * Copyright (C) 2021  Yomichan Authors
- *
- * This program is free software: you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation, either version 3 of the License, or
- * (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program.  If not, see <https://www.gnu.org/licenses/>.
- */
-
-/* global
- * api
- */
-
-class PopupWindowController {
-    prepare() {
-        const testLink = document.querySelector('#test-window-open-link');
-        testLink.addEventListener('click', this._onTestWindowOpenLinkClick.bind(this), false);
-    }
-
-    // Private
-
-    _onTestWindowOpenLinkClick(e) {
-        e.preventDefault();
-        this._testWindowOpen();
-    }
-
-    async _testWindowOpen() {
-        await api.getOrCreateSearchPopup({focus: true});
-    }
-}
diff --git a/ext/bg/js/settings2/secondary-search-dictionary-controller.js b/ext/bg/js/settings2/secondary-search-dictionary-controller.js
deleted file mode 100644
index 2fb3de67..00000000
--- a/ext/bg/js/settings2/secondary-search-dictionary-controller.js
+++ /dev/null
@@ -1,73 +0,0 @@
-/*
- * Copyright (C) 2020-2021  Yomichan Authors
- *
- * This program is free software: you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation, either version 3 of the License, or
- * (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program.  If not, see <https://www.gnu.org/licenses/>.
- */
-
-/* global
- * ObjectPropertyAccessor
- */
-
-class SecondarySearchDictionaryController {
-    constructor(settingsController) {
-        this._settingsController = settingsController;
-        this._getDictionaryInfoToken = null;
-        this._container = null;
-        this._eventListeners = new EventListenerCollection();
-    }
-
-    async prepare() {
-        this._container = document.querySelector('#secondary-search-dictionary-list');
-
-        yomichan.on('databaseUpdated', this._onDatabaseUpdated.bind(this));
-
-        await this._onDatabaseUpdated();
-    }
-
-    // Private
-
-    async _onDatabaseUpdated() {
-        this._eventListeners.removeAllEventListeners();
-
-        const token = {};
-        this._getDictionaryInfoToken = token;
-        const dictionaries = await this._settingsController.getDictionaryInfo();
-        if (this._getDictionaryInfoToken !== token) { return; }
-        this._getDictionaryInfoToken = null;
-
-        const fragment = document.createDocumentFragment();
-        for (const {title, revision} of dictionaries) {
-            const node = this._settingsController.instantiateTemplate('secondary-search-dictionary');
-            fragment.appendChild(node);
-
-            const nameNode = node.querySelector('.dictionary-title');
-            nameNode.textContent = title;
-
-            const versionNode = node.querySelector('.dictionary-version');
-            versionNode.textContent = `rev.${revision}`;
-
-            const toggle = node.querySelector('.dictionary-allow-secondary-searches');
-            toggle.dataset.setting = ObjectPropertyAccessor.getPathString(['dictionaries', title, 'allowSecondarySearches']);
-            this._eventListeners.addEventListener(toggle, 'settingChanged', this._onEnabledChanged.bind(this, node), false);
-        }
-
-        this._container.textContent = '';
-        this._container.appendChild(fragment);
-    }
-
-    _onEnabledChanged(node, e) {
-        const {detail: {value}} = e;
-        node.dataset.enabled = `${value}`;
-    }
-}
\ No newline at end of file
diff --git a/ext/bg/js/settings2/sentence-termination-characters-controller.js b/ext/bg/js/settings2/sentence-termination-characters-controller.js
deleted file mode 100644
index d62771ec..00000000
--- a/ext/bg/js/settings2/sentence-termination-characters-controller.js
+++ /dev/null
@@ -1,243 +0,0 @@
-/*
- * Copyright (C) 2021  Yomichan Authors
- *
- * This program is free software: you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation, either version 3 of the License, or
- * (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program.  If not, see <https://www.gnu.org/licenses/>.
- */
-
-class SentenceTerminationCharactersController {
-    constructor(settingsController) {
-        this._settingsController = settingsController;
-        this._entries = [];
-        this._addButton = null;
-        this._resetButton = null;
-        this._listTable = null;
-        this._listContainer = null;
-        this._emptyIndicator = null;
-    }
-
-    get settingsController() {
-        return this._settingsController;
-    }
-
-    async prepare() {
-        this._addButton = document.querySelector('#sentence-termination-character-list-add');
-        this._resetButton = document.querySelector('#sentence-termination-character-list-reset');
-        this._listTable = document.querySelector('#sentence-termination-character-list-table');
-        this._listContainer = document.querySelector('#sentence-termination-character-list');
-        this._emptyIndicator = document.querySelector('#sentence-termination-character-list-empty');
-
-        this._addButton.addEventListener('click', this._onAddClick.bind(this));
-        this._resetButton.addEventListener('click', this._onResetClick.bind(this));
-        this._settingsController.on('optionsChanged', this._onOptionsChanged.bind(this));
-
-        await this._updateOptions();
-    }
-
-    async addEntry(terminationCharacterEntry) {
-        const options = await this._settingsController.getOptions();
-        const {sentenceParsing: {terminationCharacters}} = options;
-
-        await this._settingsController.modifyProfileSettings([{
-            action: 'splice',
-            path: 'sentenceParsing.terminationCharacters',
-            start: terminationCharacters.length,
-            deleteCount: 0,
-            items: [terminationCharacterEntry]
-        }]);
-
-        await this._updateOptions();
-    }
-
-    async deleteEntry(index) {
-        const options = await this._settingsController.getOptions();
-        const {sentenceParsing: {terminationCharacters}} = options;
-
-        if (index < 0 || index >= terminationCharacters.length) { return false; }
-
-        await this._settingsController.modifyProfileSettings([{
-            action: 'splice',
-            path: 'sentenceParsing.terminationCharacters',
-            start: index,
-            deleteCount: 1,
-            items: []
-        }]);
-
-        await this._updateOptions();
-        return true;
-    }
-
-    async modifyProfileSettings(targets) {
-        return await this._settingsController.modifyProfileSettings(targets);
-    }
-
-    // Private
-
-    _onOptionsChanged({options}) {
-        for (const entry of this._entries) {
-            entry.cleanup();
-        }
-
-        this._entries = [];
-        const {sentenceParsing: {terminationCharacters}} = options;
-
-        for (let i = 0, ii = terminationCharacters.length; i < ii; ++i) {
-            const terminationCharacterEntry = terminationCharacters[i];
-            const node = this._settingsController.instantiateTemplate('sentence-termination-character-entry');
-            this._listContainer.appendChild(node);
-            const entry = new SentenceTerminationCharacterEntry(this, terminationCharacterEntry, i, node);
-            this._entries.push(entry);
-            entry.prepare();
-        }
-
-        this._listTable.hidden = (terminationCharacters.length === 0);
-        this._emptyIndicator.hidden = (terminationCharacters.length !== 0);
-    }
-
-    _onAddClick(e) {
-        e.preventDefault();
-        this._addNewEntry();
-    }
-
-    _onResetClick(e) {
-        e.preventDefault();
-        this._reset();
-    }
-
-    async _addNewEntry() {
-        const newEntry = {
-            enabled: true,
-            character1: '"',
-            character2: '"',
-            includeCharacterAtStart: false,
-            includeCharacterAtEnd: false
-        };
-        return await this.addEntry(newEntry);
-    }
-
-    async _updateOptions() {
-        const options = await this._settingsController.getOptions();
-        this._onOptionsChanged({options});
-    }
-
-    async _reset() {
-        const defaultOptions = await this._settingsController.getDefaultOptions();
-        const value = defaultOptions.profiles[0].options.sentenceParsing.terminationCharacters;
-        await this._settingsController.setProfileSetting('sentenceParsing.terminationCharacters', value);
-        await this._updateOptions();
-    }
-}
-
-class SentenceTerminationCharacterEntry {
-    constructor(parent, data, index, node) {
-        this._parent = parent;
-        this._data = data;
-        this._index = index;
-        this._node = node;
-        this._eventListeners = new EventListenerCollection();
-        this._character1Input = null;
-        this._character2Input = null;
-        this._basePath = `sentenceParsing.terminationCharacters[${this._index}]`;
-    }
-
-    prepare() {
-        const {enabled, character1, character2, includeCharacterAtStart, includeCharacterAtEnd} = this._data;
-        const node = this._node;
-
-        const enabledToggle = node.querySelector('.sentence-termination-character-enabled');
-        const typeSelect = node.querySelector('.sentence-termination-character-type');
-        const character1Input = node.querySelector('.sentence-termination-character-input1');
-        const character2Input = node.querySelector('.sentence-termination-character-input2');
-        const includeAtStartCheckbox = node.querySelector('.sentence-termination-character-include-at-start');
-        const includeAtEndheckbox = node.querySelector('.sentence-termination-character-include-at-end');
-        const menuButton = node.querySelector('.sentence-termination-character-entry-button');
-
-        this._character1Input = character1Input;
-        this._character2Input = character2Input;
-
-        const type = (character2 === null ? 'terminator' : 'quote');
-        node.dataset.type = type;
-
-        enabledToggle.checked = enabled;
-        typeSelect.value = type;
-        character1Input.value = character1;
-        character2Input.value = (character2 !== null ? character2 : '');
-        includeAtStartCheckbox.checked = includeCharacterAtStart;
-        includeAtEndheckbox.checked = includeCharacterAtEnd;
-
-        enabledToggle.dataset.setting = `${this._basePath}.enabled`;
-        includeAtStartCheckbox.dataset.setting = `${this._basePath}.includeCharacterAtStart`;
-        includeAtEndheckbox.dataset.setting = `${this._basePath}.includeCharacterAtEnd`;
-
-        this._eventListeners.addEventListener(typeSelect, 'change', this._onTypeSelectChange.bind(this), false);
-        this._eventListeners.addEventListener(character1Input, 'change', this._onCharacterChange.bind(this, 1), false);
-        this._eventListeners.addEventListener(character2Input, 'change', this._onCharacterChange.bind(this, 2), false);
-        this._eventListeners.addEventListener(menuButton, 'menuClose', this._onMenuClose.bind(this), false);
-    }
-
-    cleanup() {
-        this._eventListeners.removeAllEventListeners();
-        if (this._node.parentNode !== null) {
-            this._node.parentNode.removeChild(this._node);
-        }
-    }
-
-    // Private
-
-    _onTypeSelectChange(e) {
-        this._setHasCharacter2(e.currentTarget.value === 'quote');
-    }
-
-    _onCharacterChange(characterNumber, e) {
-        const node = e.currentTarget;
-        if (characterNumber === 2 && this._data.character2 === null) {
-            node.value = '';
-        }
-
-        const value = node.value.substring(0, 1);
-        this._setCharacterValue(node, characterNumber, value);
-    }
-
-    _onMenuClose(e) {
-        switch (e.detail.action) {
-            case 'delete':
-                this._delete();
-                break;
-        }
-    }
-
-    async _delete() {
-        this._parent.deleteEntry(this._index);
-    }
-
-    async _setHasCharacter2(has) {
-        const okay = await this._setCharacterValue(this._character2Input, 2, has ? this._data.character1 : null);
-        if (okay) {
-            const type = (!has ? 'terminator' : 'quote');
-            this._node.dataset.type = type;
-        }
-    }
-
-    async _setCharacterValue(inputNode, characterNumber, value) {
-        const pathEnd = `character${characterNumber}`;
-        const r = await this._parent.settingsController.setProfileSetting(`${this._basePath}.${pathEnd}`, value);
-        const okay = !r[0].error;
-        if (okay) {
-            this._data[pathEnd] = value;
-        } else {
-            value = this._data[pathEnd];
-        }
-        inputNode.value = (value !== null ? value : '');
-        return okay;
-    }
-}
diff --git a/ext/bg/js/settings2/settings-display-controller.js b/ext/bg/js/settings2/settings-display-controller.js
deleted file mode 100644
index 9d3e5459..00000000
--- a/ext/bg/js/settings2/settings-display-controller.js
+++ /dev/null
@@ -1,400 +0,0 @@
-/*
- * Copyright (C) 2020-2021  Yomichan Authors
- *
- * This program is free software: you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation, either version 3 of the License, or
- * (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program.  If not, see <https://www.gnu.org/licenses/>.
- */
-
-/* global
- * PopupMenu
- * SelectorObserver
- */
-
-class SettingsDisplayController {
-    constructor(settingsController, modalController) {
-        this._settingsController = settingsController;
-        this._modalController = modalController;
-        this._contentNode = null;
-        this._menuContainer = null;
-        this._onMoreToggleClickBind = null;
-        this._onMenuButtonClickBind = null;
-    }
-
-    prepare() {
-        this._contentNode = document.querySelector('.content');
-        this._menuContainer = document.querySelector('#popup-menus');
-
-        const onFabButtonClick = this._onFabButtonClick.bind(this);
-        for (const fabButton of document.querySelectorAll('.fab-button')) {
-            fabButton.addEventListener('click', onFabButtonClick, false);
-        }
-
-        const onModalAction = this._onModalAction.bind(this);
-        for (const node of document.querySelectorAll('[data-modal-action]')) {
-            node.addEventListener('click', onModalAction, false);
-        }
-
-        const onSelectOnClickElementClick = this._onSelectOnClickElementClick.bind(this);
-        for (const node of document.querySelectorAll('[data-select-on-click]')) {
-            node.addEventListener('click', onSelectOnClickElementClick, false);
-        }
-
-        const onInputTabActionKeyDown = this._onInputTabActionKeyDown.bind(this);
-        for (const node of document.querySelectorAll('[data-tab-action]')) {
-            node.addEventListener('keydown', onInputTabActionKeyDown, false);
-        }
-
-        const onSpecialUrlLinkClick = this._onSpecialUrlLinkClick.bind(this);
-        const onSpecialUrlLinkMouseDown = this._onSpecialUrlLinkMouseDown.bind(this);
-        for (const node of document.querySelectorAll('[data-special-url]')) {
-            node.addEventListener('click', onSpecialUrlLinkClick, false);
-            node.addEventListener('auxclick', onSpecialUrlLinkClick, false);
-            node.addEventListener('mousedown', onSpecialUrlLinkMouseDown, false);
-        }
-
-        for (const node of document.querySelectorAll('.defer-load-iframe')) {
-            this._setupDeferLoadIframe(node);
-        }
-
-        this._onMoreToggleClickBind = this._onMoreToggleClick.bind(this);
-        const moreSelectorObserver = new SelectorObserver({
-            selector: '.more-toggle',
-            onAdded: this._onMoreSetup.bind(this),
-            onRemoved: this._onMoreCleanup.bind(this)
-        });
-        moreSelectorObserver.observe(document.documentElement, false);
-
-        this._onMenuButtonClickBind = this._onMenuButtonClick.bind(this);
-        const menuSelectorObserver = new SelectorObserver({
-            selector: '[data-menu]',
-            onAdded: this._onMenuSetup.bind(this),
-            onRemoved: this._onMenuCleanup.bind(this)
-        });
-        menuSelectorObserver.observe(document.documentElement, false);
-
-        window.addEventListener('keydown', this._onKeyDown.bind(this), false);
-        window.addEventListener('popstate', this._onPopState.bind(this), false);
-        this._updateScrollTarget();
-    }
-
-    // Private
-
-    _onMoreSetup(element) {
-        element.addEventListener('click', this._onMoreToggleClickBind, false);
-        return null;
-    }
-
-    _onMoreCleanup(element) {
-        element.removeEventListener('click', this._onMoreToggleClickBind, false);
-    }
-
-    _onMenuSetup(element) {
-        element.addEventListener('click', this._onMenuButtonClickBind, false);
-        return null;
-    }
-
-    _onMenuCleanup(element) {
-        element.removeEventListener('click', this._onMenuButtonClickBind, false);
-    }
-
-    _onMenuButtonClick(e) {
-        const element = e.currentTarget;
-        const {menu} = element.dataset;
-        this._showMenu(element, menu);
-    }
-
-    _onFabButtonClick(e) {
-        const action = e.currentTarget.dataset.action;
-        switch (action) {
-            case 'toggle-sidebar':
-                document.body.classList.toggle('sidebar-visible');
-                break;
-            case 'toggle-preview-sidebar':
-                document.body.classList.toggle('preview-sidebar-visible');
-                break;
-        }
-    }
-
-    _onMoreToggleClick(e) {
-        const container = this._getMoreContainer(e.currentTarget);
-        if (container === null) { return; }
-
-        const more = container.querySelector('.more');
-        if (more === null) { return; }
-
-        const moreVisible = more.hidden;
-        more.hidden = !moreVisible;
-        for (const moreToggle of container.querySelectorAll('.more-toggle')) {
-            const container2 = this._getMoreContainer(moreToggle);
-            if (container2 === null) { continue; }
-
-            const more2 = container2.querySelector('.more');
-            if (more2 === null || more2 !== more) { continue; }
-
-            moreToggle.dataset.expanded = `${moreVisible}`;
-        }
-
-        e.preventDefault();
-        return false;
-    }
-
-    _onPopState() {
-        this._updateScrollTarget();
-    }
-
-    _onKeyDown(e) {
-        switch (e.code) {
-            case 'Escape':
-                if (!this._isElementAnInput(document.activeElement)) {
-                    this._closeTopMenuOrModal();
-                    e.preventDefault();
-                }
-                break;
-        }
-    }
-
-    _onModalAction(e) {
-        const node = e.currentTarget;
-        const {modalAction} = node.dataset;
-        if (typeof modalAction !== 'string') { return; }
-
-        let [action, target] = modalAction.split(',');
-        if (typeof target === 'undefined') {
-            const currentModal = node.closest('.modal');
-            if (currentModal === null) { return; }
-            target = currentModal;
-        }
-
-        const modal = this._modalController.getModal(target);
-        if (modal === null) { return; }
-
-        switch (action) {
-            case 'show':
-                modal.setVisible(true);
-                break;
-            case 'hide':
-                modal.setVisible(false);
-                break;
-            case 'toggle':
-                modal.setVisible(!modal.isVisible());
-                break;
-        }
-
-        e.preventDefault();
-    }
-
-    _onSelectOnClickElementClick(e) {
-        if (e.button !== 0) { return; }
-
-        const node = e.currentTarget;
-        const range = document.createRange();
-        range.selectNode(node);
-
-        const selection = window.getSelection();
-        selection.removeAllRanges();
-        selection.addRange(range);
-
-        e.preventDefault();
-        e.stopPropagation();
-        return false;
-    }
-
-    _onInputTabActionKeyDown(e) {
-        if (e.key !== 'Tab' || e.ctrlKey) { return; }
-
-        const node = e.currentTarget;
-        const {tabAction} = node.dataset;
-        if (typeof tabAction !== 'string') { return; }
-
-        const args = tabAction.split(',');
-        switch (args[0]) {
-            case 'ignore':
-                e.preventDefault();
-                break;
-            case 'indent':
-                e.preventDefault();
-                this._indentInput(e, node, args);
-                break;
-        }
-    }
-
-    _onSpecialUrlLinkClick(e) {
-        switch (e.button) {
-            case 0:
-            case 1:
-                e.preventDefault();
-                this._createTab(e.currentTarget.dataset.specialUrl, true);
-                break;
-        }
-    }
-
-    _onSpecialUrlLinkMouseDown(e) {
-        switch (e.button) {
-            case 0:
-            case 1:
-                e.preventDefault();
-                break;
-        }
-    }
-
-    async _createTab(url, useOpener) {
-        let openerTabId;
-        if (useOpener) {
-            try {
-                const tab = await new Promise((resolve, reject) => {
-                    chrome.tabs.getCurrent((result) => {
-                        const e = chrome.runtime.lastError;
-                        if (e) {
-                            reject(new Error(e.message));
-                        } else {
-                            resolve(result);
-                        }
-                    });
-                });
-                openerTabId = tab.id;
-            } catch (e) {
-                // NOP
-            }
-        }
-
-        return await new Promise((resolve, reject) => {
-            chrome.tabs.create({url, openerTabId}, (tab2) => {
-                const e = chrome.runtime.lastError;
-                if (e) {
-                    reject(new Error(e.message));
-                } else {
-                    resolve(tab2);
-                }
-            });
-        });
-    }
-
-    _updateScrollTarget() {
-        const hash = window.location.hash;
-        if (!hash.startsWith('#!')) { return; }
-
-        const content = this._contentNode;
-        const target = document.getElementById(hash.substring(2));
-        if (content === null || target === null) { return; }
-
-        const rect1 = content.getBoundingClientRect();
-        const rect2 = target.getBoundingClientRect();
-        content.scrollTop += rect2.top - rect1.top;
-    }
-
-    _getMoreContainer(link) {
-        const v = link.dataset.parentDistance;
-        const distance = v ? parseInt(v, 10) : 1;
-        if (Number.isNaN(distance)) { return null; }
-
-        for (let i = 0; i < distance; ++i) {
-            link = link.parentNode;
-            if (link === null) { break; }
-        }
-        return link;
-    }
-
-    _closeTopMenuOrModal() {
-        for (const popupMenu of PopupMenu.openMenus) {
-            popupMenu.close();
-            return;
-        }
-
-        const modal = this._modalController.getTopVisibleModal();
-        if (modal !== null) {
-            modal.setVisible(false);
-        }
-    }
-
-    _showMenu(element, menuName) {
-        const menu = this._settingsController.instantiateTemplate(menuName);
-        if (menu === null) { return; }
-
-        this._menuContainer.appendChild(menu);
-
-        const popupMenu = new PopupMenu(element, menu);
-        popupMenu.prepare();
-    }
-
-    _indentInput(e, node, args) {
-        let indent = '\t';
-        if (args.length > 1) {
-            const count = parseInt(args[1], 10);
-            indent = (Number.isFinite(count) && count >= 0 ? ' '.repeat(count) : args[1]);
-        }
-
-        const {selectionStart: start, selectionEnd: end, value} = node;
-        const lineStart = value.substring(0, start).lastIndexOf('\n') + 1;
-        const lineWhitespace = /^[ \t]*/.exec(value.substring(lineStart))[0];
-
-        if (e.shiftKey) {
-            const whitespaceLength = Math.max(0, Math.floor((lineWhitespace.length - 1) / 4) * 4);
-            const selectionStartNew = lineStart + whitespaceLength;
-            const selectionEndNew = lineStart + lineWhitespace.length;
-            const removeCount = selectionEndNew - selectionStartNew;
-            if (removeCount > 0) {
-                node.selectionStart = selectionStartNew;
-                node.selectionEnd = selectionEndNew;
-                document.execCommand('delete', false);
-                node.selectionStart = Math.max(lineStart, start - removeCount);
-                node.selectionEnd = Math.max(lineStart, end - removeCount);
-            }
-        } else {
-            if (indent.length > 0) {
-                const indentLength = (Math.ceil((start - lineStart + 1) / indent.length) * indent.length - (start - lineStart));
-                document.execCommand('insertText', false, indent.substring(0, indentLength));
-            }
-        }
-    }
-
-    _isElementAnInput(element) {
-        const type = element !== null ? element.nodeName.toUpperCase() : null;
-        switch (type) {
-            case 'INPUT':
-            case 'TEXTAREA':
-            case 'SELECT':
-                return true;
-            default:
-                return false;
-        }
-    }
-
-    _setupDeferLoadIframe(element) {
-        const parent = this._getMoreContainer(element);
-        if (parent === null) { return; }
-
-        let mutationObserver = null;
-        const callback = () => {
-            if (!this._isElementVisible(element)) { return false; }
-
-            const src = element.dataset.src;
-            delete element.dataset.src;
-            element.src = src;
-
-            if (mutationObserver === null) { return true; }
-
-            mutationObserver.disconnect();
-            mutationObserver = null;
-            return true;
-        };
-
-        if (callback()) { return; }
-
-        mutationObserver = new MutationObserver(callback);
-        mutationObserver.observe(parent, {attributes: true});
-    }
-
-    _isElementVisible(element) {
-        return (element.offsetParent !== null);
-    }
-}
diff --git a/ext/bg/js/settings2/settings-main.js b/ext/bg/js/settings2/settings-main.js
deleted file mode 100644
index 24248110..00000000
--- a/ext/bg/js/settings2/settings-main.js
+++ /dev/null
@@ -1,156 +0,0 @@
-/*
- * Copyright (C) 2020-2021  Yomichan Authors
- *
- * This program is free software: you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation, either version 3 of the License, or
- * (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program.  If not, see <https://www.gnu.org/licenses/>.
- */
-
-/* global
- * AnkiController
- * AnkiTemplatesController
- * AudioController
- * BackupController
- * DictionaryController
- * DictionaryImportController
- * DocumentFocusController
- * ExtensionKeyboardShortcutController
- * GenericSettingController
- * KeyboardShortcutController
- * MecabController
- * ModalController
- * NestedPopupsController
- * PermissionsToggleController
- * PopupPreviewController
- * PopupWindowController
- * ProfileController
- * ScanInputsController
- * ScanInputsSimpleController
- * SecondarySearchDictionaryController
- * SentenceTerminationCharactersController
- * SettingsController
- * SettingsDisplayController
- * StatusFooter
- * StorageController
- * TranslationTextReplacementsController
- * api
- */
-
-async function setupEnvironmentInfo() {
-    const {manifest_version: manifestVersion} = chrome.runtime.getManifest();
-    const {browser, platform} = await api.getEnvironmentInfo();
-    document.documentElement.dataset.browser = browser;
-    document.documentElement.dataset.os = platform.os;
-    document.documentElement.dataset.manifestVersion = `${manifestVersion}`;
-}
-
-async function setupGenericSettingsController(genericSettingController) {
-    await genericSettingController.prepare();
-    await genericSettingController.refresh();
-}
-
-(async () => {
-    try {
-        const documentFocusController = new DocumentFocusController();
-        documentFocusController.prepare();
-
-        const statusFooter = new StatusFooter(document.querySelector('.status-footer-container'));
-        statusFooter.prepare();
-
-        api.forwardLogsToBackend();
-        await yomichan.prepare();
-
-        setupEnvironmentInfo();
-
-        const optionsFull = await api.optionsGetFull();
-
-        const preparePromises = [];
-
-        const modalController = new ModalController();
-        modalController.prepare();
-
-        const settingsController = new SettingsController(optionsFull.profileCurrent);
-        settingsController.prepare();
-
-        const storageController = new StorageController();
-        storageController.prepare();
-
-        const dictionaryController = new DictionaryController(settingsController, modalController, storageController, statusFooter);
-        dictionaryController.prepare();
-
-        const dictionaryImportController = new DictionaryImportController(settingsController, modalController, storageController, statusFooter);
-        dictionaryImportController.prepare();
-
-        const genericSettingController = new GenericSettingController(settingsController);
-        preparePromises.push(setupGenericSettingsController(genericSettingController));
-
-        const audioController = new AudioController(settingsController);
-        audioController.prepare();
-
-        const profileController = new ProfileController(settingsController, modalController);
-        profileController.prepare();
-
-        const settingsBackup = new BackupController(settingsController, modalController);
-        settingsBackup.prepare();
-
-        const ankiController = new AnkiController(settingsController);
-        ankiController.prepare();
-
-        const ankiTemplatesController = new AnkiTemplatesController(settingsController, modalController, ankiController);
-        ankiTemplatesController.prepare();
-
-        const popupPreviewController = new PopupPreviewController(settingsController);
-        popupPreviewController.prepare();
-
-        const scanInputsController = new ScanInputsController(settingsController);
-        scanInputsController.prepare();
-
-        const simpleScanningInputController = new ScanInputsSimpleController(settingsController);
-        simpleScanningInputController.prepare();
-
-        const nestedPopupsController = new NestedPopupsController(settingsController);
-        nestedPopupsController.prepare();
-
-        const permissionsToggleController = new PermissionsToggleController(settingsController);
-        permissionsToggleController.prepare();
-
-        const secondarySearchDictionaryController = new SecondarySearchDictionaryController(settingsController);
-        secondarySearchDictionaryController.prepare();
-
-        const translationTextReplacementsController = new TranslationTextReplacementsController(settingsController);
-        translationTextReplacementsController.prepare();
-
-        const sentenceTerminationCharactersController = new SentenceTerminationCharactersController(settingsController);
-        sentenceTerminationCharactersController.prepare();
-
-        const keyboardShortcutController = new KeyboardShortcutController(settingsController);
-        keyboardShortcutController.prepare();
-
-        const extensionKeyboardShortcutController = new ExtensionKeyboardShortcutController(settingsController);
-        extensionKeyboardShortcutController.prepare();
-
-        const popupWindowController = new PopupWindowController();
-        popupWindowController.prepare();
-
-        const mecabController = new MecabController();
-        mecabController.prepare();
-
-        await Promise.all(preparePromises);
-
-        document.documentElement.dataset.loaded = 'true';
-
-        const settingsDisplayController = new SettingsDisplayController(settingsController, modalController);
-        settingsDisplayController.prepare();
-    } catch (e) {
-        yomichan.logError(e);
-    }
-})();
diff --git a/ext/bg/js/settings2/translation-text-replacements-controller.js b/ext/bg/js/settings2/translation-text-replacements-controller.js
deleted file mode 100644
index 8d13f7e9..00000000
--- a/ext/bg/js/settings2/translation-text-replacements-controller.js
+++ /dev/null
@@ -1,242 +0,0 @@
-/*
- * Copyright (C) 2021  Yomichan Authors
- *
- * This program is free software: you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation, either version 3 of the License, or
- * (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program.  If not, see <https://www.gnu.org/licenses/>.
- */
-
-class TranslationTextReplacementsController {
-    constructor(settingsController) {
-        this._settingsController = settingsController;
-        this._entryContainer = null;
-        this._entries = [];
-    }
-
-    async prepare() {
-        this._entryContainer = document.querySelector('#translation-text-replacement-list');
-        const addButton = document.querySelector('#translation-text-replacement-add');
-
-        addButton.addEventListener('click', this._onAdd.bind(this), false);
-        this._settingsController.on('optionsChanged', this._onOptionsChanged.bind(this));
-
-        await this._updateOptions();
-    }
-
-
-    async addGroup() {
-        const options = await this._settingsController.getOptions();
-        const {groups} = options.translation.textReplacements;
-        const newEntry = this._createNewEntry();
-        const target = (
-            (groups.length === 0) ?
-            {
-                action: 'splice',
-                path: 'translation.textReplacements.groups',
-                start: 0,
-                deleteCount: 0,
-                items: [[newEntry]]
-            } :
-            {
-                action: 'splice',
-                path: 'translation.textReplacements.groups[0]',
-                start: groups[0].length,
-                deleteCount: 0,
-                items: [newEntry]
-            }
-        );
-
-        await this._settingsController.modifyProfileSettings([target]);
-        await this._updateOptions();
-    }
-
-    async deleteGroup(index) {
-        const options = await this._settingsController.getOptions();
-        const {groups} = options.translation.textReplacements;
-        if (groups.length === 0) { return false; }
-
-        const group0 = groups[0];
-        if (index < 0 || index >= group0.length) { return false; }
-
-        const target = (
-            (group0.length > 1) ?
-            {
-                action: 'splice',
-                path: 'translation.textReplacements.groups[0]',
-                start: index,
-                deleteCount: 1,
-                items: []
-            } :
-            {
-                action: 'splice',
-                path: 'translation.textReplacements.groups',
-                start: 0,
-                deleteCount: group0.length,
-                items: []
-            }
-        );
-
-        await this._settingsController.modifyProfileSettings([target]);
-        await this._updateOptions();
-        return true;
-    }
-
-    // Private
-
-    _onOptionsChanged({options}) {
-        for (const entry of this._entries) {
-            entry.cleanup();
-        }
-        this._entries = [];
-
-        const {groups} = options.translation.textReplacements;
-        if (groups.length > 0) {
-            const group0 = groups[0];
-            for (let i = 0, ii = group0.length; i < ii; ++i) {
-                const data = group0[i];
-                const node = this._settingsController.instantiateTemplate('translation-text-replacement-entry');
-                this._entryContainer.appendChild(node);
-                const entry = new TranslationTextReplacementsEntry(this, node, i, data);
-                this._entries.push(entry);
-                entry.prepare();
-            }
-        }
-    }
-
-    _onAdd() {
-        this.addGroup();
-    }
-
-    async _updateOptions() {
-        const options = await this._settingsController.getOptions();
-        this._onOptionsChanged({options});
-    }
-
-    _createNewEntry() {
-        return {pattern: '', ignoreCase: false, replacement: ''};
-    }
-}
-
-class TranslationTextReplacementsEntry {
-    constructor(parent, node, index) {
-        this._parent = parent;
-        this._node = node;
-        this._index = index;
-        this._eventListeners = new EventListenerCollection();
-        this._patternInput = null;
-        this._replacementInput = null;
-        this._ignoreCaseToggle = null;
-        this._testInput = null;
-        this._testOutput = null;
-    }
-
-    prepare() {
-        const patternInput = this._node.querySelector('.translation-text-replacement-pattern');
-        const replacementInput = this._node.querySelector('.translation-text-replacement-replacement');
-        const ignoreCaseToggle = this._node.querySelector('.translation-text-replacement-pattern-ignore-case');
-        const menuButton = this._node.querySelector('.translation-text-replacement-button');
-        const testInput = this._node.querySelector('.translation-text-replacement-test-input');
-        const testOutput = this._node.querySelector('.translation-text-replacement-test-output');
-
-        this._patternInput = patternInput;
-        this._replacementInput = replacementInput;
-        this._ignoreCaseToggle = ignoreCaseToggle;
-        this._testInput = testInput;
-        this._testOutput = testOutput;
-
-        const pathBase = `translation.textReplacements.groups[0][${this._index}]`;
-        patternInput.dataset.setting = `${pathBase}.pattern`;
-        replacementInput.dataset.setting = `${pathBase}.replacement`;
-        ignoreCaseToggle.dataset.setting = `${pathBase}.ignoreCase`;
-
-        this._eventListeners.addEventListener(menuButton, 'menuOpen', this._onMenuOpen.bind(this), false);
-        this._eventListeners.addEventListener(menuButton, 'menuClose', this._onMenuClose.bind(this), false);
-        this._eventListeners.addEventListener(patternInput, 'settingChanged', this._onPatternChanged.bind(this), false);
-        this._eventListeners.addEventListener(ignoreCaseToggle, 'settingChanged', this._updateTestInput.bind(this), false);
-        this._eventListeners.addEventListener(replacementInput, 'settingChanged', this._updateTestInput.bind(this), false);
-        this._eventListeners.addEventListener(testInput, 'input', this._updateTestInput.bind(this), false);
-    }
-
-    cleanup() {
-        this._eventListeners.removeAllEventListeners();
-        if (this._node.parentNode !== null) {
-            this._node.parentNode.removeChild(this._node);
-        }
-    }
-
-    // Private
-
-    _onMenuOpen(e) {
-        const bodyNode = e.detail.menu.bodyNode;
-        const testVisible = this._isTestVisible();
-        bodyNode.querySelector('[data-menu-action=showTest]').hidden = testVisible;
-        bodyNode.querySelector('[data-menu-action=hideTest]').hidden = !testVisible;
-    }
-
-    _onMenuClose(e) {
-        switch (e.detail.action) {
-            case 'remove':
-                this._parent.deleteGroup(this._index);
-                break;
-            case 'showTest':
-                this._setTestVisible(true);
-                break;
-            case 'hideTest':
-                this._setTestVisible(false);
-                break;
-        }
-    }
-
-    _onPatternChanged({detail: {value}}) {
-        this._validatePattern(value);
-        this._updateTestInput();
-    }
-
-    _validatePattern(value) {
-        let okay = false;
-        try {
-            new RegExp(value, 'g');
-            okay = true;
-        } catch (e) {
-            // NOP
-        }
-
-        this._patternInput.dataset.invalid = `${!okay}`;
-    }
-
-    _isTestVisible() {
-        return this._node.dataset.testVisible === 'true';
-    }
-
-    _setTestVisible(visible) {
-        this._node.dataset.testVisible = `${visible}`;
-        this._updateTestInput();
-    }
-
-    _updateTestInput() {
-        if (!this._isTestVisible()) { return; }
-
-        const ignoreCase = this._ignoreCaseToggle.checked;
-        const pattern = this._patternInput.value;
-        let regex;
-        try {
-            regex = new RegExp(pattern, ignoreCase ? 'gi' : 'g');
-        } catch (e) {
-            return;
-        }
-
-        const replacement = this._replacementInput.value;
-        const input = this._testInput.value;
-        const output = input.replace(regex, replacement);
-        this._testOutput.value = output;
-    }
-}