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diff --git a/ext/bg/js/settings/scan-inputs-controller.js b/ext/bg/js/settings/scan-inputs-controller.js
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+/*
+ * Copyright (C) 2020 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._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._addButton.addEventListener('click', this._onAddButtonClick.bind(this), false);
+ this._settingsController.on('optionsChanged', this._onOptionsChanged.bind(this));
+
+ const options = await this._settingsController.getOptions();
+ this._onOptionsChanged({options});
+ }
+
+ 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._settingsController.modifyProfileSettings([{
+ action: 'splice',
+ path: 'scanning.inputs',
+ start: index,
+ deleteCount: 1,
+ items: []
+ }]);
+ }
+
+ setProperty(index, property, value) {
+ const path = `scanning.inputs[${index}].${property}`;
+ this._settingsController.setProfileSetting(path, value);
+ }
+
+ // Private
+
+ _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) {
+ const {include, exclude} = inputs[i];
+ this._addOption(i, include, exclude);
+ }
+ }
+
+ _onAddButtonClick(e) {
+ e.preventDefault();
+
+ const index = this._entries.length;
+ const include = '';
+ const exclude = '';
+ this._addOption(index, include, exclude);
+ this._settingsController.modifyProfileSettings([{
+ action: 'splice',
+ path: 'scanning.inputs',
+ start: index,
+ deleteCount: 0,
+ items: [{include, exclude}]
+ }]);
+ }
+
+ _addOption(index, include, exclude) {
+ const field = new ScanInputField(this, index, this._os);
+ this._entries.push(field);
+ field.prepare(this._container, include, exclude);
+ }
+}
+
+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;
+ }
+
+ prepare(container, include, exclude) {
+ const node = this._instantiateTemplate('#scan-input-template');
+ const includeInputNode = node.querySelector('.scan-input-include .scan-input-field');
+ const includeMouseButton = node.querySelector('.scan-input-include .mouse-button');
+ const excludeInputNode = node.querySelector('.scan-input-exclude .scan-input-field');
+ const excludeMouseButton = node.querySelector('.scan-input-exclude .mouse-button');
+ const removeButton = node.querySelector('.scan-input-remove');
+
+ this._node = node;
+ container.appendChild(node);
+
+ this._includeInputField = new KeyboardMouseInputField(includeInputNode, includeMouseButton, this._os);
+ this._excludeInputField = new KeyboardMouseInputField(excludeInputNode, excludeMouseButton, this._os);
+ this._includeInputField.prepare(include, 'modifierInputs');
+ this._excludeInputField.prepare(exclude, 'modifierInputs');
+
+ this._eventListeners.on(this._includeInputField, 'change', this._onIncludeValueChange.bind(this));
+ this._eventListeners.on(this._excludeInputField, 'change', this._onExcludeValueChange.bind(this));
+ this._eventListeners.addEventListener(removeButton, 'click', this._onRemoveClick.bind(this));
+ }
+
+ 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;
+ }
+ }
+
+ _onIncludeValueChange({value}) {
+ this._parent.setProperty(this._index, 'include', value);
+ }
+
+ _onExcludeValueChange({value}) {
+ this._parent.setProperty(this._index, 'exclude', value);
+ }
+
+ _onRemoveClick(e) {
+ e.preventDefault();
+ this._parent.removeInput(this._index);
+ }
+
+ _instantiateTemplate(templateSelector) {
+ const template = document.querySelector(templateSelector);
+ const content = document.importNode(template.content, true);
+ return content.firstChild;
+ }
+}