yomichan/ext/fg/js/driver.js
2016-09-15 22:44:33 -07:00

206 lines
6.7 KiB
JavaScript

/*
* 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 Driver {
constructor() {
this.popup = new Popup();
this.audio = {};
this.lastMousePos = null;
this.lastTextSource = null;
this.pendingLookup = false;
this.enabled = false;
this.options = {};
this.definitions = null;
this.sequence = 0;
this.fgRoot = chrome.extension.getURL('fg');
chrome.runtime.onMessage.addListener(this.onBgMessage.bind(this));
window.addEventListener('message', this.onFrameMessage.bind(this));
window.addEventListener('mousedown', this.onMouseDown.bind(this));
window.addEventListener('mousemove', this.onMouseMove.bind(this));
window.addEventListener('keydown', this.onKeyDown.bind(this));
window.addEventListener('scroll', e => this.hidePopup());
window.addEventListener('resize', e => this.hidePopup());
}
onKeyDown(e) {
if (this.enabled && this.lastMousePos !== null && (e.keyCode === 16 || e.charCode === 16)) {
this.searchAt(this.lastMousePos);
}
}
onMouseMove(e) {
this.lastMousePos = {x: e.clientX, y: e.clientY};
if (this.enabled && (e.shiftKey || e.which === 2)) {
this.searchAt(this.lastMousePos);
}
}
onMouseDown(e) {
this.lastMousePos = {x: e.clientX, y: e.clientY};
if (this.enabled && (e.shiftKey || e.which === 2)) {
this.searchAt(this.lastMousePos);
} else {
this.hidePopup();
}
}
onBgMessage({action, params}, sender, callback) {
const method = this['api_' + action];
if (typeof(method) === 'function') {
method.call(this, params);
}
callback();
}
onFrameMessage(e) {
const {action, params} = e.data, method = this['api_' + action];
if (typeof(method) === 'function') {
method.call(this, params);
}
}
searchAt(point) {
if (this.pendingLookup) {
return;
}
const textSource = textSourceFromPoint(point);
if (textSource === null || !textSource.containsPoint(point)) {
this.hidePopup();
return;
}
if (this.lastTextSource !== null && this.lastTextSource.equals(textSource)) {
return;
}
textSource.setEndOffset(this.options.scanLength);
this.pendingLookup = true;
findTerm(textSource.text()).then(({definitions, length}) => {
if (length === 0) {
this.pendingLookup = false;
this.hidePopup();
} else {
textSource.setEndOffset(length);
const sentence = extractSentence(textSource, this.options.sentenceExtent);
definitions.forEach(definition => {
definition.url = window.location.href;
definition.sentence = sentence;
});
const sequence = ++this.sequence;
return renderText({definitions, sequence, root: this.fgRoot, options: this.options}, 'term-list.html').then(content => {
this.definitions = definitions;
this.pendingLookup = false;
this.showPopup(textSource, content);
return canAddDefinitions(definitions, ['term_kanji', 'term_kana']);
}).then(states => {
if (states !== null) {
states.forEach((state, index) => this.popup.invokeApi('setActionState', {index, state, sequence}));
}
});
}
});
}
showPopup(textSource, content) {
this.popup.showNextTo(textSource.getRect(), content);
if (this.options.selectMatchedText) {
textSource.select();
}
this.lastTextSource = textSource;
}
hidePopup() {
this.popup.hide();
if (this.options.selectMatchedText && this.lastTextSource !== null) {
this.lastTextSource.deselect();
}
this.lastTextSource = null;
this.definitions = null;
}
api_setOptions(opts) {
this.options = opts;
}
api_setEnabled(enabled) {
if (!(this.enabled = enabled)) {
this.hidePopup();
}
}
api_addNote({index, mode}) {
const state = {[mode]: false};
addDefinition(this.definitions[index], mode).then(success => {
if (success) {
this.popup.invokeApi('setActionState', {index, state, sequence: this.sequence});
} else {
alert('Note could not be added');
}
});
}
api_playAudio(index) {
const definition = this.definitions[index];
let url = `https://assets.languagepod101.com/dictionary/japanese/audiomp3.php?kanji=${encodeURIComponent(definition.expression)}`;
if (definition.reading) {
url += `&kana=${encodeURIComponent(definition.reading)}`;
}
for (const key in this.audio) {
this.audio[key].pause();
}
const audio = this.audio[url] || new Audio(url);
audio.currentTime = 0;
audio.play();
this.audio[url] = audio;
}
api_displayKanji(kanji) {
findKanji(kanji).then(definitions => {
definitions.forEach(definition => definition.url = window.location.href);
const sequence = ++this.sequence;
return renderText({definitions, sequence, root: this.fgRoot, options: this.options}, 'kanji-list.html').then(content => {
this.definitions = definitions;
this.popup.setContent(content, definitions);
return canAddDefinitions(definitions, ['kanji']);
}).then(states => {
if (states !== null) {
states.forEach((state, index) => this.popup.invokeApi('setActionState', {index, state, sequence}));
}
});
});
}
}
window.driver = new Driver();