yomichan/ext/bg/js/yomichan.js

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/*
* Copyright (C) 2016 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 <http://www.gnu.org/licenses/>.
*/
class Yomichan {
constructor() {
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Handlebars.partials = Handlebars.templates;
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Handlebars.registerHelper('kanjiLinks', function(options) {
let result = '';
for (const c of options.fn(this)) {
if (Translator.isKanji(c)) {
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result += Handlebars.templates['kanji-link.html']({kanji: c}).trim();
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} else {
result += c;
}
}
return result;
});
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this.translator = new Translator();
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this.xhr = null;
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this.updateState('disabled');
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loadOptions((opts) => {
this.updateOptions(opts);
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chrome.runtime.onMessage.addListener(this.onMessage.bind(this));
chrome.browserAction.onClicked.addListener(this.onBrowserAction.bind(this));
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if (this.options.loadOnStartup) {
this.updateState('loading');
}
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});
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}
onMessage(request, sender, callback) {
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const {action, data} = request, handlers = {
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findKanji: ({text}) => this.findKanji(text, callback),
findTerm: ({text}) => this.findTerm(text, callback),
getOptions: () => callback(this.options),
getState: () => callback(this.state),
renderText: ({data, template}) => callback(Handlebars.templates[template](data))
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};
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handlers[action].call(this, data);
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return true;
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}
onBrowserAction(tab) {
switch (this.state) {
case 'disabled':
this.updateState('loading');
break;
case 'enabled':
this.updateState('disabled');
break;
}
}
updateState(state) {
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if (this.state === state) {
return;
}
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this.state = state;
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switch (state) {
case 'disabled':
chrome.browserAction.setBadgeText({text: ''});
break;
case 'enabled':
chrome.browserAction.setBadgeText({text: 'on'});
break;
case 'loading':
chrome.browserAction.setBadgeText({text: '...'});
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this.translator.loadData(() => this.updateState('enabled'));
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break;
}
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Yomichan.notifyChange('state', this.state);
}
updateOptions(options) {
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this.options = options;
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Yomichan.notifyChange('options', this.options);
}
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findTerm(text, callback) {
const results = this.translator.findTerm(text);
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this.callAnkiApi('canAddNotes', results.results, (definitions) => {
if (definitions !== null) {
results.results = definitions;
}
callback(results);
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});
}
findKanji(text, callback) {
const results = this.translator.findKanji(text);
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this.callAnkiApi('cannAddNotes', results.results, (definitions) => {
if (definitions !== null) {
results.results = definitions;
}
callback(results);
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});
}
callAnkiApi(action, data, callback) {
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if (!this.options.enableAnkiConnect) {
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callback(null);
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return;
}
if (this.xhr !== null) {
this.xhr.abort();
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}
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this.xhr = new XMLHttpRequest();
this.xhr.addEventListener('loadend', () => {
const resp = this.xhr.responseText;
callback(resp ? JSON.parse(resp) : null);
this.xhr = null;
});
this.xhr.open('POST', 'http://127.0.0.1:8888');
this.xhr.withCredentials = true;
this.xhr.setRequestHeader('Content-Type', 'text/json');
this.xhr.send(JSON.stringify({action: action, data: data}));
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}
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static notifyChange(name, value) {
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chrome.tabs.query({}, (tabs) => {
for (const tab of tabs) {
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chrome.tabs.sendMessage(tab.id, {name: name, value: value}, () => null);
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}
});
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}
}
window.yomichan = new Yomichan();