yomichan/ext/bg/js/backend.js

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/*
* Copyright (C) 2016-2020 Yomichan Authors
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*
* 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
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* along with this program. If not, see <https://www.gnu.org/licenses/>.
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*/
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/* global
* AnkiConnect
* AnkiNoteBuilder
* AudioSystem
* AudioUriBuilder
* BackendApiForwarder
* ClipboardMonitor
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* Database
* DictionaryImporter
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* JsonSchema
* Mecab
* Translator
* conditionsTestValue
* dictConfigured
* dictTermsSort
* handlebarsRenderDynamic
* jp
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* optionsLoad
* optionsSave
* profileConditionsDescriptor
* requestJson
* requestText
* utilIsolate
*/
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class Backend {
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constructor() {
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this.database = new Database();
this.dictionaryImporter = new DictionaryImporter();
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this.translator = new Translator(this.database);
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this.anki = new AnkiConnect();
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this.mecab = new Mecab();
this.clipboardMonitor = new ClipboardMonitor({getClipboard: this._onApiClipboardGet.bind(this)});
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this.options = null;
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this.optionsSchema = null;
this.defaultAnkiFieldTemplates = null;
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this.audioUriBuilder = new AudioUriBuilder();
this.audioSystem = new AudioSystem({
audioUriBuilder: this.audioUriBuilder,
useCache: false
});
this.ankiNoteBuilder = new AnkiNoteBuilder({
anki: this.anki,
audioSystem: this.audioSystem,
renderTemplate: this._renderTemplate.bind(this)
});
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this.optionsContext = {
depth: 0,
url: window.location.href
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};
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this.isPrepared = false;
this.clipboardPasteTarget = document.querySelector('#clipboard-paste-target');
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this.popupWindow = null;
this.apiForwarder = new BackendApiForwarder();
this.messageToken = yomichan.generateId(16);
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this._messageHandlers = new Map([
['yomichanCoreReady', {handler: this._onApiYomichanCoreReady.bind(this), async: false}],
['optionsSchemaGet', {handler: this._onApiOptionsSchemaGet.bind(this), async: false}],
['optionsGet', {handler: this._onApiOptionsGet.bind(this), async: false}],
['optionsGetFull', {handler: this._onApiOptionsGetFull.bind(this), async: false}],
['optionsSet', {handler: this._onApiOptionsSet.bind(this), async: true}],
['optionsSave', {handler: this._onApiOptionsSave.bind(this), async: true}],
['kanjiFind', {handler: this._onApiKanjiFind.bind(this), async: true}],
['termsFind', {handler: this._onApiTermsFind.bind(this), async: true}],
['textParse', {handler: this._onApiTextParse.bind(this), async: true}],
['definitionAdd', {handler: this._onApiDefinitionAdd.bind(this), async: true}],
['definitionsAddable', {handler: this._onApiDefinitionsAddable.bind(this), async: true}],
['noteView', {handler: this._onApiNoteView.bind(this), async: true}],
['templateRender', {handler: this._onApiTemplateRender.bind(this), async: true}],
['commandExec', {handler: this._onApiCommandExec.bind(this), async: false}],
['audioGetUri', {handler: this._onApiAudioGetUri.bind(this), async: true}],
['screenshotGet', {handler: this._onApiScreenshotGet.bind(this), async: true}],
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['broadcastTab', {handler: this._onApiBroadcastTab.bind(this), async: false}],
['frameInformationGet', {handler: this._onApiFrameInformationGet.bind(this), async: true}],
['injectStylesheet', {handler: this._onApiInjectStylesheet.bind(this), async: true}],
['getEnvironmentInfo', {handler: this._onApiGetEnvironmentInfo.bind(this), async: true}],
['clipboardGet', {handler: this._onApiClipboardGet.bind(this), async: true}],
['getDisplayTemplatesHtml', {handler: this._onApiGetDisplayTemplatesHtml.bind(this), async: true}],
['getQueryParserTemplatesHtml', {handler: this._onApiGetQueryParserTemplatesHtml.bind(this), async: true}],
['getZoom', {handler: this._onApiGetZoom.bind(this), async: true}],
['getMessageToken', {handler: this._onApiGetMessageToken.bind(this), async: false}],
['getDefaultAnkiFieldTemplates', {handler: this._onApiGetDefaultAnkiFieldTemplates.bind(this), async: false}],
['getAnkiDeckNames', {handler: this._onApiGetAnkiDeckNames.bind(this), async: true}],
['getAnkiModelNames', {handler: this._onApiGetAnkiModelNames.bind(this), async: true}],
['getAnkiModelFieldNames', {handler: this._onApiGetAnkiModelFieldNames.bind(this), async: true}],
['getDictionaryInfo', {handler: this._onApiGetDictionaryInfo.bind(this), async: true}],
['getDictionaryCounts', {handler: this._onApiGetDictionaryCounts.bind(this), async: true}],
['purgeDatabase', {handler: this._onApiPurgeDatabase.bind(this), async: true}]
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]);
this._commandHandlers = new Map([
['search', this._onCommandSearch.bind(this)],
['help', this._onCommandHelp.bind(this)],
['options', this._onCommandOptions.bind(this)],
['toggle', this._onCommandToggle.bind(this)]
]);
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}
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async prepare() {
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await this.database.prepare();
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await this.translator.prepare();
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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');
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this.options = await optionsLoad();
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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');
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if (isObject(chrome.commands) && isObject(chrome.commands.onCommand)) {
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chrome.commands.onCommand.addListener(this._runCommand.bind(this));
}
if (isObject(chrome.tabs) && isObject(chrome.tabs.onZoomChange)) {
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chrome.tabs.onZoomChange.addListener(this._onZoomChange.bind(this));
}
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chrome.runtime.onMessage.addListener(this.onMessage.bind(this));
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this.isPrepared = true;
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const options = this.getOptions(this.optionsContext);
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if (options.general.showGuide) {
chrome.tabs.create({url: chrome.runtime.getURL('/bg/guide.html')});
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}
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this.clipboardMonitor.on('change', this._onClipboardText.bind(this));
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this._sendMessageAllTabs('backendPrepared');
const callback = () => this.checkLastError(chrome.runtime.lastError);
chrome.runtime.sendMessage({action: 'backendPrepared'}, callback);
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}
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_sendMessageAllTabs(action, params={}) {
const callback = () => this.checkLastError(chrome.runtime.lastError);
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chrome.tabs.query({}, (tabs) => {
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for (const tab of tabs) {
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chrome.tabs.sendMessage(tab.id, {action, params}, callback);
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}
});
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}
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onOptionsUpdated(source) {
this.applyOptions();
this._sendMessageAllTabs('optionsUpdated', {source});
}
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onMessage({action, params}, sender, callback) {
const messageHandler = this._messageHandlers.get(action);
if (typeof messageHandler === 'undefined') { return false; }
const {handler, async} = messageHandler;
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try {
const promiseOrResult = handler(params, sender);
if (async) {
promiseOrResult.then(
(result) => callback({result}),
(error) => callback({error: errorToJson(error)})
);
return true;
} else {
callback({result: promiseOrResult});
return false;
}
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} catch (error) {
callback({error: errorToJson(error)});
return false;
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}
}
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_onClipboardText({text}) {
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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);
}
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applyOptions() {
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const options = this.getOptions(this.optionsContext);
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if (!options.general.enable) {
this.setExtensionBadgeBackgroundColor('#555555');
this.setExtensionBadgeText('off');
} else if (!dictConfigured(options)) {
this.setExtensionBadgeBackgroundColor('#f0ad4e');
this.setExtensionBadgeText('!');
} else {
this.setExtensionBadgeText('');
}
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this.anki.setServer(options.anki.server);
this.anki.setEnabled(options.anki.enable);
if (options.parsing.enableMecabParser) {
this.mecab.startListener();
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} else {
this.mecab.stopListener();
}
if (options.general.enableClipboardPopups) {
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this.clipboardMonitor.start();
} else {
this.clipboardMonitor.stop();
}
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}
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getOptionsSchema() {
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return this.optionsSchema;
}
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getFullOptions() {
return this.options;
}
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setFullOptions(options) {
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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);
}
}
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getOptions(optionsContext) {
return this.getProfile(optionsContext).options;
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}
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getProfile(optionsContext) {
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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;
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}
setExtensionBadgeBackgroundColor(color) {
if (typeof chrome.browserAction.setBadgeBackgroundColor === 'function') {
chrome.browserAction.setBadgeBackgroundColor({color});
}
}
setExtensionBadgeText(text) {
if (typeof chrome.browserAction.setBadgeText === 'function') {
chrome.browserAction.setBadgeText({text});
}
}
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checkLastError() {
// NOP
}
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_runCommand(command, params) {
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const handler = this._commandHandlers.get(command);
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if (typeof handler !== 'function') { return false; }
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handler(params);
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return true;
}
async importDictionary(archiveSource, onProgress, details) {
return await this.dictionaryImporter.import(this.database, archiveSource, onProgress, details);
}
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async _textParseScanning(text, options) {
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 && sourceLength > 0) {
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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], '', options.parsing.readingMode);
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term.push({text: text[0], reading});
text = text.substring(1);
}
results.push(term);
}
return results;
}
async _textParseMecab(text, options) {
const results = [];
const rawResults = await this.mecab.parseText(text);
for (const [mecabName, parsedLines] of Object.entries(rawResults)) {
const result = [];
for (const parsedLine of parsedLines) {
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for (const {expression, reading, source} of parsedLine) {
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const term = [];
for (const {text: text2, furigana} of jp.distributeFuriganaInflected(
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expression.length > 0 ? expression : source,
jp.convertKatakanaToHiragana(reading),
source
)) {
const reading2 = jp.convertReading(text2, furigana, options.parsing.readingMode);
term.push({text: text2, reading: reading2});
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}
result.push(term);
}
result.push([{text: '\n', reading: ''}]);
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}
results.push([mecabName, result]);
}
return results;
}
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// Message handlers
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_onApiYomichanCoreReady(_params, sender) {
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// tab ID isn't set in background (e.g. browser_action)
const callback = () => this.checkLastError(chrome.runtime.lastError);
const data = {action: 'backendPrepared'};
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if (typeof sender.tab === 'undefined') {
chrome.runtime.sendMessage(data, callback);
return false;
} else {
chrome.tabs.sendMessage(sender.tab.id, data, callback);
return true;
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}
}
_onApiOptionsSchemaGet() {
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return this.getOptionsSchema();
}
_onApiOptionsGet({optionsContext}) {
return this.getOptions(optionsContext);
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}
_onApiOptionsGetFull() {
return this.getFullOptions();
}
async _onApiOptionsSet({changedOptions, optionsContext, source}) {
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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);
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const obj2 = node.obj[key];
if (obj2 !== null && typeof obj2 === 'object') {
nodes.unshift({obj: obj2, path});
} else {
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valuePaths.push([obj2, path]);
}
}
}
return valuePaths;
}
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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)) {
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modifyOption(path, value);
}
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await this._onApiOptionsSave({source});
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}
async _onApiOptionsSave({source}) {
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const options = this.getFullOptions();
await optionsSave(options);
this.onOptionsUpdated(source);
}
async _onApiKanjiFind({text, optionsContext}) {
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const options = this.getOptions(optionsContext);
const definitions = await this.translator.findKanji(text, options);
definitions.splice(options.general.maxResults);
return definitions;
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}
async _onApiTermsFind({text, details, optionsContext}) {
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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};
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}
async _onApiTextParse({text, optionsContext}) {
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const options = this.getOptions(optionsContext);
const results = [];
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if (options.parsing.enableScanningParser) {
results.push({
source: 'scanning-parser',
id: 'scan',
content: await this._textParseScanning(text, options)
});
}
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if (options.parsing.enableMecabParser) {
const mecabResults = await this._textParseMecab(text, options);
for (const [mecabDictName, mecabDictResults] of mecabResults) {
results.push({
source: 'mecab',
dictionary: mecabDictName,
id: `mecab-${mecabDictName}`,
content: mecabDictResults
});
}
}
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return results;
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}
async _onApiDefinitionAdd({definition, mode, context, details, optionsContext}) {
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const options = this.getOptions(optionsContext);
const templates = this.defaultAnkiFieldTemplates;
if (mode !== 'kanji') {
const {customSourceUrl} = options.audio;
await this.ankiNoteBuilder.injectAudio(
definition,
options.anki.terms.fields,
options.audio.sources,
{textToSpeechVoice: null, customSourceUrl}
);
}
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if (details && details.screenshot) {
await this.ankiNoteBuilder.injectScreenshot(
definition,
options.anki.terms.fields,
details.screenshot
);
}
const note = await this.ankiNoteBuilder.createNote(definition, mode, context, options, templates);
return this.anki.addNote(note);
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}
async _onApiDefinitionsAddable({definitions, modes, context, optionsContext}) {
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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, context, 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;
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}
async _onApiNoteView({noteId}) {
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return await this.anki.guiBrowse(`nid:${noteId}`);
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}
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async _onApiTemplateRender({template, data}) {
return this._renderTemplate(template, data);
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}
_onApiCommandExec({command, params}) {
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return this._runCommand(command, params);
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}
async _onApiAudioGetUri({definition, source, details}) {
return await this.audioUriBuilder.getUri(definition, source, details);
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}
_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));
});
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}
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_onApiBroadcastTab({action, params}, sender) {
if (!(sender && sender.tab)) {
return false;
}
const tabId = sender.tab.id;
const callback = () => this.checkLastError(chrome.runtime.lastError);
chrome.tabs.sendMessage(tabId, {action, params}, callback);
return true;
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}
_onApiFrameInformationGet(params, sender) {
const frameId = sender.frameId;
return Promise.resolve({frameId});
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}
_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',
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allFrames: false,
matchAboutBlank: true
} :
{
code: value,
runAt: 'document_start',
cssOrigin: 'user',
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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();
}
});
});
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}
async _onApiGetEnvironmentInfo() {
const browser = await Backend._getBrowser();
const platform = await new Promise((resolve) => chrome.runtime.getPlatformInfo(resolve));
return {
browser,
platform: {
os: platform.os
}
};
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}
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;
}
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}
async _onApiGetDisplayTemplatesHtml() {
const url = chrome.runtime.getURL('/mixed/display-templates.html');
return await requestText(url, 'GET');
}
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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});
}
});
});
}
_onApiGetMessageToken() {
return this.messageToken;
}
_onApiGetDefaultAnkiFieldTemplates() {
return this.defaultAnkiFieldTemplates;
}
async _onApiGetAnkiDeckNames(params, sender) {
this._validatePrivilegedMessageSender(sender);
return await this.anki.getDeckNames();
}
async _onApiGetAnkiModelNames(params, sender) {
this._validatePrivilegedMessageSender(sender);
return await this.anki.getModelNames();
}
async _onApiGetAnkiModelFieldNames({modelName}, sender) {
this._validatePrivilegedMessageSender(sender);
return await this.anki.getModelFieldNames(modelName);
}
async _onApiGetDictionaryInfo(params, sender) {
this._validatePrivilegedMessageSender(sender);
return await this.translator.database.getDictionaryInfo();
}
async _onApiGetDictionaryCounts({dictionaryNames, getTotal}, sender) {
this._validatePrivilegedMessageSender(sender);
return await this.translator.database.getDictionaryCounts(dictionaryNames, getTotal);
}
async _onApiPurgeDatabase(params, sender) {
this._validatePrivilegedMessageSender(sender);
return await this.translator.purgeDatabase();
}
// Command handlers
async _onCommandSearch(params) {
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const {mode='existingOrNewTab', query} = params || {};
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const options = this.getOptions(this.optionsContext);
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const {popupWidth, popupHeight} = options.general;
const baseUrl = chrome.runtime.getURL('/bg/search.html');
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const queryParams = {mode};
if (query && query.length > 0) { queryParams.query = query; }
const queryString = new URLSearchParams(queryParams).toString();
const url = `${baseUrl}?${queryString}`;
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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'));
};
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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(
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tab.id, {action: 'searchQueryUpdate', params: {text: queryParams.query}}, resolve
));
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}
return true;
}
};
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switch (mode) {
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case 'existingOrNewTab':
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try {
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if (await openInTab()) { return; }
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} catch (e) {
// NOP
}
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chrome.tabs.create({url});
return;
case 'newTab':
chrome.tabs.create({url});
return;
case 'popup':
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try {
// chrome.windows not supported (e.g. on Firefox mobile)
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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
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}
return;
}
}
_onCommandHelp() {
chrome.tabs.create({url: 'https://foosoft.net/projects/yomichan/'});
}
_onCommandOptions(params) {
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const {mode='existingOrNewTab'} = params || {};
if (mode === 'existingOrNewTab') {
chrome.runtime.openOptionsPage();
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} 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';
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const options = this.getOptions(optionsContext);
options.general.enable = !options.general.enable;
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await this._onApiOptionsSave({source});
}
// Utilities
_validatePrivilegedMessageSender(sender) {
const url = sender.url;
if (!(typeof url === 'string' && yomichan.isExtensionUrl(url))) {
throw new Error('Invalid message sender');
}
}
async _renderTemplate(template, data) {
return handlebarsRenderDynamic(template, data);
}
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;
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if (e) {
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reject(new Error(e.message));
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} else {
resolve();
}
});
});
if (!(typeof chrome.windows === 'object' && chrome.windows !== null)) {
// Windows not supported (e.g. on Firefox mobile)
return;
}
try {
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const tabWindow = await new Promise((resolve, reject) => {
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chrome.windows.get(tab.windowId, {}, (value) => {
const e = chrome.runtime.lastError;
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if (e) {
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reject(new Error(e.message));
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} else {
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resolve(value);
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}
});
});
if (!tabWindow.focused) {
await new Promise((resolve, reject) => {
chrome.windows.update(tab.windowId, {focused: true}, () => {
const e = chrome.runtime.lastError;
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if (e) {
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reject(new Error(e.message));
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} 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';
}
}
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}
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window.yomichanBackend = new Backend();
window.yomichanBackend.prepare();