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-rw-r--r--ext/js/settings/generic-setting-controller.js232
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diff --git a/ext/js/settings/generic-setting-controller.js b/ext/js/settings/generic-setting-controller.js
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--- a/ext/js/settings/generic-setting-controller.js
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-/*
- * 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;
- }
-}