yomichan/ext/bg/js/backend.js
2020-03-07 17:41:57 -05:00

913 lines
32 KiB
JavaScript

/*
* 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 optionsSave, utilIsolate
conditionsTestValue, profileConditionsDescriptor
handlebarsRenderDynamic
requestText, requestJson, optionsLoad
dictConfigured, dictTermsSort, dictEnabledSet, dictNoteFormat
audioGetUrl, audioInject
jpConvertReading, jpDistributeFuriganaInflected, jpKatakanaToHiragana
Translator, AnkiConnect, AnkiNull, Mecab, BackendApiForwarder, JsonSchema, ClipboardMonitor*/
class Backend {
constructor() {
this.translator = new Translator();
this.anki = new AnkiNull();
this.mecab = new Mecab();
this.clipboardMonitor = new ClipboardMonitor();
this.options = null;
this.optionsSchema = null;
this.defaultAnkiFieldTemplates = null;
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)],
['audioGetUrl', this._onApiAudioGetUrl.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.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.onClipboardText = 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;
}
// 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 jpDistributeFuriganaInflected(expression, reading, source)) {
const reading2 = jpConvertReading(text2, furigana, options.parsing.readingMode);
term.push({text: text2, reading: reading2});
}
text = text.substring(source.length);
} else {
const reading = jpConvertReading(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 jpDistributeFuriganaInflected(
expression,
jpKatakanaToHiragana(reading),
source
)) {
const reading2 = jpConvertReading(text2, furigana, options.parsing.readingMode);
term.push({text: text2, reading: reading2});
}
} else {
const reading2 = jpConvertReading(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 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 dictNoteFormat(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 dictNoteFormat(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 handlebarsRenderDynamic(template, data);
}
async _onApiCommandExec({command, params}) {
return this._runCommand(command, params);
}
async _onApiAudioGetUrl({definition, source, optionsContext}) {
const options = this.getOptions(optionsContext);
return await audioGetUrl(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: {query: 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 _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;
}
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();