/* * Copyright (C) 2016-2020 Alex Yatskov <alex@foosoft.net> * Author: Alex Yatskov <alex@foosoft.net> * * 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 * AnkiNull * AudioSystem * AudioUriBuilder * BackendApiForwarder * ClipboardMonitor * Database * DictionaryImporter * JsonSchema * Mecab * Translator * conditionsTestValue * dictConfigured * dictEnabledSet * dictTermsSort * handlebarsRenderDynamic * jp * optionsLoad * optionsSave * profileConditionsDescriptor * requestJson * requestText * utilIsolate */ class Backend { constructor() { this.database = new Database(); this.dictionaryImporter = new DictionaryImporter(); this.translator = new Translator(this.database); this.anki = new AnkiNull(); this.mecab = new Mecab(); this.clipboardMonitor = new ClipboardMonitor({getClipboard: this._onApiClipboardGet.bind(this)}); this.ankiNoteBuilder = new AnkiNoteBuilder({renderTemplate: this._renderTemplate.bind(this)}); this.options = null; this.optionsSchema = null; this.defaultAnkiFieldTemplates = null; this.audioSystem = new AudioSystem({getAudioUri: this._getAudioUri.bind(this)}); this.audioUriBuilder = new AudioUriBuilder(); this.optionsContext = { depth: 0, url: window.location.href }; this.isPrepared = false; this.clipboardPasteTarget = document.querySelector('#clipboard-paste-target'); this.popupWindow = null; this.apiForwarder = new BackendApiForwarder(); this.messageToken = yomichan.generateId(16); this._messageHandlers = new Map([ ['yomichanCoreReady', this._onApiYomichanCoreReady.bind(this)], ['optionsSchemaGet', this._onApiOptionsSchemaGet.bind(this)], ['optionsGet', this._onApiOptionsGet.bind(this)], ['optionsGetFull', this._onApiOptionsGetFull.bind(this)], ['optionsSet', this._onApiOptionsSet.bind(this)], ['optionsSave', this._onApiOptionsSave.bind(this)], ['kanjiFind', this._onApiKanjiFind.bind(this)], ['termsFind', this._onApiTermsFind.bind(this)], ['textParse', this._onApiTextParse.bind(this)], ['textParseMecab', this._onApiTextParseMecab.bind(this)], ['definitionAdd', this._onApiDefinitionAdd.bind(this)], ['definitionsAddable', this._onApiDefinitionsAddable.bind(this)], ['noteView', this._onApiNoteView.bind(this)], ['templateRender', this._onApiTemplateRender.bind(this)], ['commandExec', this._onApiCommandExec.bind(this)], ['audioGetUri', this._onApiAudioGetUri.bind(this)], ['screenshotGet', this._onApiScreenshotGet.bind(this)], ['forward', this._onApiForward.bind(this)], ['frameInformationGet', this._onApiFrameInformationGet.bind(this)], ['injectStylesheet', this._onApiInjectStylesheet.bind(this)], ['getEnvironmentInfo', this._onApiGetEnvironmentInfo.bind(this)], ['clipboardGet', this._onApiClipboardGet.bind(this)], ['getDisplayTemplatesHtml', this._onApiGetDisplayTemplatesHtml.bind(this)], ['getQueryParserTemplatesHtml', this._onApiGetQueryParserTemplatesHtml.bind(this)], ['getZoom', this._onApiGetZoom.bind(this)], ['getMessageToken', this._onApiGetMessageToken.bind(this)], ['getDefaultAnkiFieldTemplates', this._onApiGetDefaultAnkiFieldTemplates.bind(this)] ]); this._commandHandlers = new Map([ ['search', this._onCommandSearch.bind(this)], ['help', this._onCommandHelp.bind(this)], ['options', this._onCommandOptions.bind(this)], ['toggle', this._onCommandToggle.bind(this)] ]); } async prepare() { await this.database.prepare(); await this.translator.prepare(); this.optionsSchema = await requestJson(chrome.runtime.getURL('/bg/data/options-schema.json'), 'GET'); this.defaultAnkiFieldTemplates = await requestText(chrome.runtime.getURL('/bg/data/default-anki-field-templates.handlebars'), 'GET'); this.options = await optionsLoad(); try { this.options = JsonSchema.getValidValueOrDefault(this.optionsSchema, this.options); } catch (e) { // This shouldn't happen, but catch errors just in case of bugs logError(e); } this.onOptionsUpdated('background'); if (isObject(chrome.commands) && isObject(chrome.commands.onCommand)) { chrome.commands.onCommand.addListener(this._runCommand.bind(this)); } if (isObject(chrome.tabs) && isObject(chrome.tabs.onZoomChange)) { chrome.tabs.onZoomChange.addListener(this._onZoomChange.bind(this)); } chrome.runtime.onMessage.addListener(this.onMessage.bind(this)); this.isPrepared = true; const options = this.getOptions(this.optionsContext); if (options.general.showGuide) { chrome.tabs.create({url: chrome.runtime.getURL('/bg/guide.html')}); } this.clipboardMonitor.on('change', this._onClipboardText.bind(this)); this._sendMessageAllTabs('backendPrepared'); const callback = () => this.checkLastError(chrome.runtime.lastError); chrome.runtime.sendMessage({action: 'backendPrepared'}, callback); } _sendMessageAllTabs(action, params={}) { const callback = () => this.checkLastError(chrome.runtime.lastError); chrome.tabs.query({}, (tabs) => { for (const tab of tabs) { chrome.tabs.sendMessage(tab.id, {action, params}, callback); } }); } onOptionsUpdated(source) { this.applyOptions(); this._sendMessageAllTabs('optionsUpdated', {source}); } onMessage({action, params}, sender, callback) { const handler = this._messageHandlers.get(action); if (typeof handler !== 'function') { return false; } try { const promise = handler(params, sender); promise.then( (result) => callback({result}), (error) => callback({error: errorToJson(error)}) ); return true; } catch (error) { callback({error: errorToJson(error)}); return false; } } _onClipboardText({text}) { this._onCommandSearch({mode: 'popup', query: text}); } _onZoomChange({tabId, oldZoomFactor, newZoomFactor}) { const callback = () => this.checkLastError(chrome.runtime.lastError); chrome.tabs.sendMessage(tabId, {action: 'zoomChanged', params: {oldZoomFactor, newZoomFactor}}, callback); } applyOptions() { const options = this.getOptions(this.optionsContext); if (!options.general.enable) { this.setExtensionBadgeBackgroundColor('#555555'); this.setExtensionBadgeText('off'); } else if (!dictConfigured(options)) { this.setExtensionBadgeBackgroundColor('#f0ad4e'); this.setExtensionBadgeText('!'); } else { this.setExtensionBadgeText(''); } this.anki = options.anki.enable ? new AnkiConnect(options.anki.server) : new AnkiNull(); if (options.parsing.enableMecabParser) { this.mecab.startListener(); } else { this.mecab.stopListener(); } if (options.general.enableClipboardPopups) { this.clipboardMonitor.start(); } else { this.clipboardMonitor.stop(); } } getOptionsSchema() { return this.optionsSchema; } getFullOptions() { return this.options; } setFullOptions(options) { try { this.options = JsonSchema.getValidValueOrDefault(this.optionsSchema, utilIsolate(options)); } catch (e) { // This shouldn't happen, but catch errors just in case of bugs logError(e); } } getOptions(optionsContext) { return this.getProfile(optionsContext).options; } getProfile(optionsContext) { const profiles = this.options.profiles; if (typeof optionsContext.index === 'number') { return profiles[optionsContext.index]; } const profile = this.getProfileFromContext(optionsContext); return profile !== null ? profile : this.options.profiles[this.options.profileCurrent]; } getProfileFromContext(optionsContext) { for (const profile of this.options.profiles) { const conditionGroups = profile.conditionGroups; if (conditionGroups.length > 0 && Backend.testConditionGroups(conditionGroups, optionsContext)) { return profile; } } return null; } static testConditionGroups(conditionGroups, data) { if (conditionGroups.length === 0) { return false; } for (const conditionGroup of conditionGroups) { const conditions = conditionGroup.conditions; if (conditions.length > 0 && Backend.testConditions(conditions, data)) { return true; } } return false; } static testConditions(conditions, data) { for (const condition of conditions) { if (!conditionsTestValue(profileConditionsDescriptor, condition.type, condition.operator, condition.value, data)) { return false; } } return true; } setExtensionBadgeBackgroundColor(color) { if (typeof chrome.browserAction.setBadgeBackgroundColor === 'function') { chrome.browserAction.setBadgeBackgroundColor({color}); } } setExtensionBadgeText(text) { if (typeof chrome.browserAction.setBadgeText === 'function') { chrome.browserAction.setBadgeText({text}); } } checkLastError() { // NOP } _runCommand(command, params) { const handler = this._commandHandlers.get(command); if (typeof handler !== 'function') { return false; } handler(params); return true; } async importDictionary(archiveSource, onProgress, details) { return await this.dictionaryImporter.import(this.database, archiveSource, onProgress, details); } // Message handlers _onApiYomichanCoreReady(_params, sender) { // tab ID isn't set in background (e.g. browser_action) if (typeof sender.tab === 'undefined') { const callback = () => this.checkLastError(chrome.runtime.lastError); chrome.runtime.sendMessage({action: 'backendPrepared'}, callback); return Promise.resolve(); } const tabId = sender.tab.id; return new Promise((resolve) => { chrome.tabs.sendMessage(tabId, {action: 'backendPrepared'}, resolve); }); } async _onApiOptionsSchemaGet() { return this.getOptionsSchema(); } async _onApiOptionsGet({optionsContext}) { return this.getOptions(optionsContext); } async _onApiOptionsGetFull() { return this.getFullOptions(); } async _onApiOptionsSet({changedOptions, optionsContext, source}) { const options = this.getOptions(optionsContext); function getValuePaths(obj) { const valuePaths = []; const nodes = [{obj, path: []}]; while (nodes.length > 0) { const node = nodes.pop(); for (const key of Object.keys(node.obj)) { const path = node.path.concat(key); const obj2 = node.obj[key]; if (obj2 !== null && typeof obj2 === 'object') { nodes.unshift({obj: obj2, path}); } else { valuePaths.push([obj2, path]); } } } return valuePaths; } function modifyOption(path, value) { let pivot = options; for (const key of path.slice(0, -1)) { if (!hasOwn(pivot, key)) { return false; } pivot = pivot[key]; } pivot[path[path.length - 1]] = value; return true; } for (const [value, path] of getValuePaths(changedOptions)) { modifyOption(path, value); } await this._onApiOptionsSave({source}); } async _onApiOptionsSave({source}) { const options = this.getFullOptions(); await optionsSave(options); this.onOptionsUpdated(source); } async _onApiKanjiFind({text, optionsContext}) { const options = this.getOptions(optionsContext); const definitions = await this.translator.findKanji(text, options); definitions.splice(options.general.maxResults); return definitions; } async _onApiTermsFind({text, details, optionsContext}) { const options = this.getOptions(optionsContext); const mode = options.general.resultOutputMode; const [definitions, length] = await this.translator.findTerms(mode, text, details, options); definitions.splice(options.general.maxResults); return {length, definitions}; } async _onApiTextParse({text, optionsContext}) { const options = this.getOptions(optionsContext); const results = []; while (text.length > 0) { const term = []; const [definitions, sourceLength] = await this.translator.findTerms( 'simple', text.substring(0, options.scanning.length), {}, options ); if (definitions.length > 0) { dictTermsSort(definitions); const {expression, reading} = definitions[0]; const source = text.substring(0, sourceLength); for (const {text: text2, furigana} of jp.distributeFuriganaInflected(expression, reading, source)) { const reading2 = jp.convertReading(text2, furigana, options.parsing.readingMode); term.push({text: text2, reading: reading2}); } text = text.substring(source.length); } else { const reading = jp.convertReading(text[0], null, options.parsing.readingMode); term.push({text: text[0], reading}); text = text.substring(1); } results.push(term); } return results; } async _onApiTextParseMecab({text, optionsContext}) { const options = this.getOptions(optionsContext); const results = []; const rawResults = await this.mecab.parseText(text); for (const [mecabName, parsedLines] of Object.entries(rawResults)) { const result = []; for (const parsedLine of parsedLines) { for (const {expression, reading, source} of parsedLine) { const term = []; if (expression !== null && reading !== null) { for (const {text: text2, furigana} of jp.distributeFuriganaInflected( expression, jp.convertKatakanaToHiragana(reading), source )) { const reading2 = jp.convertReading(text2, furigana, options.parsing.readingMode); term.push({text: text2, reading: reading2}); } } else { const reading2 = jp.convertReading(source, null, options.parsing.readingMode); term.push({text: source, reading: reading2}); } result.push(term); } result.push([{text: '\n'}]); } results.push([mecabName, result]); } return results; } async _onApiDefinitionAdd({definition, mode, context, optionsContext}) { const options = this.getOptions(optionsContext); const templates = this.defaultAnkiFieldTemplates; if (mode !== 'kanji') { await this._audioInject( definition, options.anki.terms.fields, options.audio.sources, optionsContext ); } if (context && context.screenshot) { await this._injectScreenshot( definition, options.anki.terms.fields, context.screenshot ); } const note = await this.ankiNoteBuilder.createNote(definition, mode, options, templates); return this.anki.addNote(note); } async _onApiDefinitionsAddable({definitions, modes, optionsContext}) { const options = this.getOptions(optionsContext); const templates = this.defaultAnkiFieldTemplates; const states = []; try { const notes = []; for (const definition of definitions) { for (const mode of modes) { const note = await this.ankiNoteBuilder.createNote(definition, mode, options, templates); notes.push(note); } } const cannotAdd = []; const results = await this.anki.canAddNotes(notes); for (let resultBase = 0; resultBase < results.length; resultBase += modes.length) { const state = {}; for (let modeOffset = 0; modeOffset < modes.length; ++modeOffset) { const index = resultBase + modeOffset; const result = results[index]; const info = {canAdd: result}; state[modes[modeOffset]] = info; if (!result) { cannotAdd.push([notes[index], info]); } } states.push(state); } if (cannotAdd.length > 0) { const noteIdsArray = await this.anki.findNoteIds(cannotAdd.map((e) => e[0])); for (let i = 0, ii = Math.min(cannotAdd.length, noteIdsArray.length); i < ii; ++i) { const noteIds = noteIdsArray[i]; if (noteIds.length > 0) { cannotAdd[i][1].noteId = noteIds[0]; } } } } catch (e) { // NOP } return states; } async _onApiNoteView({noteId}) { return await this.anki.guiBrowse(`nid:${noteId}`); } async _onApiTemplateRender({template, data}) { return this._renderTemplate(template, data); } async _onApiCommandExec({command, params}) { return this._runCommand(command, params); } async _onApiAudioGetUri({definition, source, optionsContext}) { const options = this.getOptions(optionsContext); return await this.audioUriBuilder.getUri(definition, source, options); } _onApiScreenshotGet({options}, sender) { if (!(sender && sender.tab)) { return Promise.resolve(); } const windowId = sender.tab.windowId; return new Promise((resolve) => { chrome.tabs.captureVisibleTab(windowId, options, (dataUrl) => resolve(dataUrl)); }); } _onApiForward({action, params}, sender) { if (!(sender && sender.tab)) { return Promise.resolve(); } const tabId = sender.tab.id; return new Promise((resolve) => { chrome.tabs.sendMessage(tabId, {action, params}, (response) => resolve(response)); }); } _onApiFrameInformationGet(params, sender) { const frameId = sender.frameId; return Promise.resolve({frameId}); } _onApiInjectStylesheet({type, value}, sender) { if (!sender.tab) { return Promise.reject(new Error('Invalid tab')); } const tabId = sender.tab.id; const frameId = sender.frameId; const details = ( type === 'file' ? { file: value, runAt: 'document_start', cssOrigin: 'author', allFrames: false, matchAboutBlank: true } : { code: value, runAt: 'document_start', cssOrigin: 'user', allFrames: false, matchAboutBlank: true } ); if (typeof frameId === 'number') { details.frameId = frameId; } return new Promise((resolve, reject) => { chrome.tabs.insertCSS(tabId, details, () => { const e = chrome.runtime.lastError; if (e) { reject(new Error(e.message)); } else { resolve(); } }); }); } async _onApiGetEnvironmentInfo() { const browser = await Backend._getBrowser(); const platform = await new Promise((resolve) => chrome.runtime.getPlatformInfo(resolve)); return { browser, platform: { os: platform.os } }; } async _onApiClipboardGet() { /* Notes: document.execCommand('paste') doesn't work on Firefox. This may be a bug: https://bugzilla.mozilla.org/show_bug.cgi?id=1603985 Therefore, navigator.clipboard.readText() is used on Firefox. navigator.clipboard.readText() can't be used in Chrome for two reasons: * Requires page to be focused, else it rejects with an exception. * When the page is focused, Chrome will request clipboard permission, despite already being an extension with clipboard permissions. It effectively asks for the non-extension permission for clipboard access. */ const browser = await Backend._getBrowser(); if (browser === 'firefox' || browser === 'firefox-mobile') { return await navigator.clipboard.readText(); } else { const clipboardPasteTarget = this.clipboardPasteTarget; clipboardPasteTarget.value = ''; clipboardPasteTarget.focus(); document.execCommand('paste'); const result = clipboardPasteTarget.value; clipboardPasteTarget.value = ''; return result; } } async _onApiGetDisplayTemplatesHtml() { const url = chrome.runtime.getURL('/mixed/display-templates.html'); return await requestText(url, 'GET'); } async _onApiGetQueryParserTemplatesHtml() { const url = chrome.runtime.getURL('/bg/query-parser-templates.html'); return await requestText(url, 'GET'); } _onApiGetZoom(params, sender) { if (!sender || !sender.tab) { return Promise.reject(new Error('Invalid tab')); } return new Promise((resolve, reject) => { const tabId = sender.tab.id; if (!( chrome.tabs !== null && typeof chrome.tabs === 'object' && typeof chrome.tabs.getZoom === 'function' )) { // Not supported resolve({zoomFactor: 1.0}); return; } chrome.tabs.getZoom(tabId, (zoomFactor) => { const e = chrome.runtime.lastError; if (e) { reject(new Error(e.message)); } else { resolve({zoomFactor}); } }); }); } async _onApiGetMessageToken() { return this.messageToken; } async _onApiGetDefaultAnkiFieldTemplates() { return this.defaultAnkiFieldTemplates; } // Command handlers async _onCommandSearch(params) { const {mode='existingOrNewTab', query} = params || {}; const options = this.getOptions(this.optionsContext); const {popupWidth, popupHeight} = options.general; const baseUrl = chrome.runtime.getURL('/bg/search.html'); const queryParams = {mode}; if (query && query.length > 0) { queryParams.query = query; } const queryString = new URLSearchParams(queryParams).toString(); const url = `${baseUrl}?${queryString}`; const isTabMatch = (url2) => { if (url2 === null || !url2.startsWith(baseUrl)) { return false; } const {baseUrl: baseUrl2, queryParams: queryParams2} = parseUrl(url2); return baseUrl2 === baseUrl && (queryParams2.mode === mode || (!queryParams2.mode && mode === 'existingOrNewTab')); }; const openInTab = async () => { const tab = await Backend._findTab(1000, isTabMatch); if (tab !== null) { await Backend._focusTab(tab); if (queryParams.query) { await new Promise((resolve) => chrome.tabs.sendMessage( tab.id, {action: 'searchQueryUpdate', params: {text: queryParams.query}}, resolve )); } return true; } }; switch (mode) { case 'existingOrNewTab': try { if (await openInTab()) { return; } } catch (e) { // NOP } chrome.tabs.create({url}); return; case 'newTab': chrome.tabs.create({url}); return; case 'popup': try { // chrome.windows not supported (e.g. on Firefox mobile) if (!isObject(chrome.windows)) { return; } if (await openInTab()) { return; } // if the previous popup is open in an invalid state, close it if (this.popupWindow !== null) { const callback = () => this.checkLastError(chrome.runtime.lastError); chrome.windows.remove(this.popupWindow.id, callback); } // open new popup this.popupWindow = await new Promise((resolve) => chrome.windows.create( {url, width: popupWidth, height: popupHeight, type: 'popup'}, resolve )); } catch (e) { // NOP } return; } } _onCommandHelp() { chrome.tabs.create({url: 'https://foosoft.net/projects/yomichan/'}); } _onCommandOptions(params) { const {mode='existingOrNewTab'} = params || {}; if (mode === 'existingOrNewTab') { chrome.runtime.openOptionsPage(); } else if (mode === 'newTab') { const manifest = chrome.runtime.getManifest(); const url = chrome.runtime.getURL(manifest.options_ui.page); chrome.tabs.create({url}); } } async _onCommandToggle() { const optionsContext = { depth: 0, url: window.location.href }; const source = 'popup'; const options = this.getOptions(optionsContext); options.general.enable = !options.general.enable; await this._onApiOptionsSave({source}); } // Utilities async _getAudioUri(definition, source, details) { let optionsContext = (typeof details === 'object' && details !== null ? details.optionsContext : null); if (!(typeof optionsContext === 'object' && optionsContext !== null)) { optionsContext = this.optionsContext; } const options = this.getOptions(optionsContext); return await this.audioUriBuilder.getUri(definition, source, options); } async _audioInject(definition, fields, sources, optionsContext) { let usesAudio = false; for (const fieldValue of Object.values(fields)) { if (fieldValue.includes('{audio}')) { usesAudio = true; break; } } if (!usesAudio) { return true; } try { const expressions = definition.expressions; const audioSourceDefinition = Array.isArray(expressions) ? expressions[0] : definition; const {uri} = await this.audioSystem.getDefinitionAudio(audioSourceDefinition, sources, {tts: false, optionsContext}); const filename = this._createInjectedAudioFileName(audioSourceDefinition); if (filename !== null) { definition.audio = {url: uri, filename}; } return true; } catch (e) { return false; } } async _injectScreenshot(definition, fields, screenshot) { let usesScreenshot = false; for (const fieldValue of Object.values(fields)) { if (fieldValue.includes('{screenshot}')) { usesScreenshot = true; break; } } if (!usesScreenshot) { return; } const dateToString = (date) => { const year = date.getUTCFullYear(); const month = date.getUTCMonth().toString().padStart(2, '0'); const day = date.getUTCDate().toString().padStart(2, '0'); const hours = date.getUTCHours().toString().padStart(2, '0'); const minutes = date.getUTCMinutes().toString().padStart(2, '0'); const seconds = date.getUTCSeconds().toString().padStart(2, '0'); return `${year}-${month}-${day}-${hours}-${minutes}-${seconds}`; }; const now = new Date(Date.now()); const filename = `yomichan_browser_screenshot_${definition.reading}_${dateToString(now)}.${screenshot.format}`; const data = screenshot.dataUrl.replace(/^data:[\w\W]*?,/, ''); try { await this.anki.storeMediaFile(filename, data); } catch (e) { return; } definition.screenshotFileName = filename; } async _renderTemplate(template, data) { return handlebarsRenderDynamic(template, data); } _createInjectedAudioFileName(definition) { const {reading, expression} = definition; if (!reading && !expression) { return null; } let filename = 'yomichan'; if (reading) { filename += `_${reading}`; } if (expression) { filename += `_${expression}`; } filename += '.mp3'; return filename; } static _getTabUrl(tab) { return new Promise((resolve) => { chrome.tabs.sendMessage(tab.id, {action: 'getUrl'}, {frameId: 0}, (response) => { let url = null; if (!chrome.runtime.lastError) { url = (response !== null && typeof response === 'object' && !Array.isArray(response) ? response.url : null); if (url !== null && typeof url !== 'string') { url = null; } } resolve({tab, url}); }); }); } static async _findTab(timeout, checkUrl) { // This function works around the need to have the "tabs" permission to access tab.url. const tabs = await new Promise((resolve) => chrome.tabs.query({}, resolve)); let matchPromiseResolve = null; const matchPromise = new Promise((resolve) => { matchPromiseResolve = resolve; }); const checkTabUrl = ({tab, url}) => { if (checkUrl(url, tab)) { matchPromiseResolve(tab); } }; const promises = []; for (const tab of tabs) { const promise = Backend._getTabUrl(tab); promise.then(checkTabUrl); promises.push(promise); } const racePromises = [ matchPromise, Promise.all(promises).then(() => null) ]; if (typeof timeout === 'number') { racePromises.push(new Promise((resolve) => setTimeout(() => resolve(null), timeout))); } return await Promise.race(racePromises); } static async _focusTab(tab) { await new Promise((resolve, reject) => { chrome.tabs.update(tab.id, {active: true}, () => { const e = chrome.runtime.lastError; if (e) { reject(new Error(e.message)); } else { resolve(); } }); }); if (!(typeof chrome.windows === 'object' && chrome.windows !== null)) { // Windows not supported (e.g. on Firefox mobile) return; } try { const tabWindow = await new Promise((resolve, reject) => { chrome.windows.get(tab.windowId, {}, (value) => { const e = chrome.runtime.lastError; if (e) { reject(new Error(e.message)); } else { resolve(value); } }); }); if (!tabWindow.focused) { await new Promise((resolve, reject) => { chrome.windows.update(tab.windowId, {focused: true}, () => { const e = chrome.runtime.lastError; if (e) { reject(new Error(e.message)); } else { resolve(); } }); }); } } catch (e) { // Edge throws exception for no reason here. } } static async _getBrowser() { if (EXTENSION_IS_BROWSER_EDGE) { return 'edge'; } if (typeof browser !== 'undefined') { try { const info = await browser.runtime.getBrowserInfo(); if (info.name === 'Fennec') { return 'firefox-mobile'; } } catch (e) { // NOP } return 'firefox'; } else { return 'chrome'; } } } window.yomichanBackend = new Backend(); window.yomichanBackend.prepare();