yomichan/ext/mixed/js/display.js

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JavaScript
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/*
* Copyright (C) 2017 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 Display {
constructor(spinner, container) {
this.spinner = spinner;
this.container = container;
this.definitions = [];
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this.options = null;
this.context = null;
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this.sequence = 0;
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this.index = 0;
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this.audioCache = {};
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$(document).keydown(this.onKeyDown.bind(this));
$(document).on('wheel', this.onWheel.bind(this));
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}
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onError(error) {
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throw 'Override me';
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}
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onSearchClear() {
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throw 'Override me';
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}
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onSourceTermView(e) {
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e.preventDefault();
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this.sourceTermView();
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}
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async onKanjiLookup(e) {
try {
e.preventDefault();
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const link = $(e.target);
const context = {
source: {
definitions: this.definitions,
index: Display.entryIndexFind(link)
}
};
if (this.context) {
context.sentence = this.context.sentence;
context.url = this.context.url;
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}
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const kanjiDefs = await apiKanjiFind(link.text());
this.kanjiShow(kanjiDefs, this.options, context);
} catch (e) {
this.onError(e);
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}
}
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onAudioPlay(e) {
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e.preventDefault();
const index = Display.entryIndexFind($(e.currentTarget));
this.audioPlay(this.definitions[index]);
}
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onNoteAdd(e) {
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e.preventDefault();
const link = $(e.currentTarget);
const index = Display.entryIndexFind(link);
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this.noteAdd(this.definitions[index], link.data('mode'));
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}
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onNoteView(e) {
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e.preventDefault();
const link = $(e.currentTarget);
const index = Display.entryIndexFind(link);
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apiNoteView(link.data('noteId'));
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}
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onKeyDown(e) {
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const noteTryAdd = mode => {
const button = Display.adderButtonFind(this.index, mode);
if (button.length !== 0 && !button.hasClass('disabled')) {
this.noteAdd(this.definitions[this.index], mode);
}
};
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const noteTryView = mode => {
const button = Display.viewerButtonFind(this.index);
if (button.length !== 0 && !button.hasClass('disabled')) {
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apiNoteView(button.data('noteId'));
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}
};
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const handlers = {
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27: /* escape */ () => {
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this.onSearchClear();
return true;
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},
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33: /* page up */ () => {
if (e.altKey) {
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this.entryScrollIntoView(this.index - 3, true);
return true;
}
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},
34: /* page down */ () => {
if (e.altKey) {
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this.entryScrollIntoView(this.index + 3, true);
return true;
}
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},
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35: /* end */ () => {
if (e.altKey) {
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this.entryScrollIntoView(this.definitions.length - 1, true);
return true;
}
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},
36: /* home */ () => {
if (e.altKey) {
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this.entryScrollIntoView(0, true);
return true;
}
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},
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38: /* up */ () => {
if (e.altKey) {
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this.entryScrollIntoView(this.index - 1, true);
return true;
}
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},
40: /* down */ () => {
if (e.altKey) {
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this.entryScrollIntoView(this.index + 1, true);
return true;
}
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},
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66: /* b */ () => {
if (e.altKey) {
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this.sourceTermView();
return true;
}
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},
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69: /* e */ () => {
if (e.altKey) {
noteTryAdd('term-kanji');
return true;
}
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},
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75: /* k */ () => {
if (e.altKey) {
noteTryAdd('kanji');
return true;
}
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},
82: /* r */ () => {
if (e.altKey) {
noteTryAdd('term-kana');
return true;
}
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},
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80: /* p */ () => {
if (e.altKey) {
if ($('.entry').eq(this.index).data('type') === 'term') {
this.audioPlay(this.definitions[this.index]);
}
return true;
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}
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},
86: /* v */ () => {
if (e.altKey) {
noteTryView();
}
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}
};
const handler = handlers[e.keyCode];
if (handler && handler()) {
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e.preventDefault();
}
}
onWheel(e) {
const event = e.originalEvent;
const handler = () => {
if (event.altKey) {
if (event.deltaY < 0) { // scroll up
this.entryScrollIntoView(this.index - 1, true);
return true;
} else if (event.deltaY > 0) { // scroll down
this.entryScrollIntoView(this.index + 1, true);
return true;
}
}
};
if (handler()) {
event.preventDefault();
}
}
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async termsShow(definitions, options, context) {
try {
window.focus();
this.definitions = definitions;
this.options = options;
this.context = context;
const sequence = ++this.sequence;
const params = {
definitions,
addable: options.anki.enable,
grouped: options.general.resultOutputMode === 'group',
merged: options.general.resultOutputMode === 'merge',
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playback: options.general.audioSource !== 'disabled',
debug: options.general.debugInfo
};
if (context) {
for (const definition of definitions) {
if (context.sentence) {
definition.cloze = Display.clozeBuild(context.sentence, definition.source);
}
definition.url = context.url;
}
}
const content = await apiTemplateRender('terms.html', params);
this.container.html(content);
this.entryScrollIntoView(context && context.index || 0);
$('.action-add-note').click(this.onNoteAdd.bind(this));
$('.action-view-note').click(this.onNoteView.bind(this));
$('.action-play-audio').click(this.onAudioPlay.bind(this));
$('.kanji-link').click(this.onKanjiLookup.bind(this));
await this.adderButtonUpdate(['term-kanji', 'term-kana'], sequence);
} catch (e) {
this.onError(e);
}
}
async kanjiShow(definitions, options, context) {
try {
window.focus();
this.definitions = definitions;
this.options = options;
this.context = context;
const sequence = ++this.sequence;
const params = {
definitions,
source: context && context.source,
addable: options.anki.enable,
debug: options.general.debugInfo
};
if (context) {
for (const definition of definitions) {
if (context.sentence) {
definition.cloze = Display.clozeBuild(context.sentence);
}
definition.url = context.url;
}
}
const content = await apiTemplateRender('kanji.html', params);
this.container.html(content);
this.entryScrollIntoView(context && context.index || 0);
$('.action-add-note').click(this.onNoteAdd.bind(this));
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$('.action-view-note').click(this.onNoteView.bind(this));
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$('.source-term').click(this.onSourceTermView.bind(this));
await this.adderButtonUpdate(['kanji'], sequence);
} catch (e) {
this.onError(e);
}
}
async adderButtonUpdate(modes, sequence) {
try {
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const states = await apiDefinitionsAddable(this.definitions, modes);
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if (!states || sequence !== this.sequence) {
return;
}
for (let i = 0; i < states.length; ++i) {
const state = states[i];
for (const mode in state) {
const button = Display.adderButtonFind(i, mode);
if (state[mode]) {
button.removeClass('disabled');
} else {
button.addClass('disabled');
}
button.removeClass('pending');
}
}
} catch (e) {
this.onError(e);
}
}
entryScrollIntoView(index, smooth) {
index = Math.min(index, this.definitions.length - 1);
index = Math.max(index, 0);
$('.current').hide().eq(index).show();
const container = $('html,body').stop();
const entry = $('.entry').eq(index);
const target = index === 0 ? 0 : entry.offset().top;
if (smooth) {
container.animate({scrollTop: target}, 200);
} else {
container.scrollTop(target);
}
this.index = index;
}
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sourceTermView() {
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if (this.context && this.context.source) {
const context = {
url: this.context.source.url,
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sentence: this.context.source.sentence,
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index: this.context.source.index
};
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this.termsShow(this.context.source.definitions, this.options, context);
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}
}
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async noteAdd(definition, mode) {
try {
this.spinner.show();
const noteId = await apiDefinitionAdd(definition, mode);
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if (noteId) {
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const index = this.definitions.indexOf(definition);
Display.adderButtonFind(index, mode).addClass('disabled');
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Display.viewerButtonFind(index).removeClass('pending disabled').data('noteId', noteId);
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} else {
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throw 'Note could note be added';
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}
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} catch (e) {
this.onError(e);
} finally {
this.spinner.hide();
}
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}
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async audioPlay(definition) {
try {
this.spinner.show();
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let url = await apiAudioGetUrl(definition, this.options.general.audioSource);
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if (!url) {
url = '/mixed/mp3/button.mp3';
}
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for (const key in this.audioCache) {
this.audioCache[key].pause();
}
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let audio = this.audioCache[url];
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if (audio) {
audio.currentTime = 0;
audio.volume = this.options.general.audioVolume / 100.0;
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audio.play();
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} else {
audio = new Audio(url);
audio.onloadeddata = () => {
if (audio.duration === 5.694694 || audio.duration === 5.720718) {
audio = new Audio('/mixed/mp3/button.mp3');
}
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this.audioCache[url] = audio;
audio.volume = this.options.general.audioVolume / 100.0;
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audio.play();
};
}
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} catch (e) {
this.onError(e);
} finally {
this.spinner.hide();
}
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}
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static clozeBuild(sentence, source) {
const result = {
sentence: sentence.text.trim()
};
if (source) {
result.prefix = sentence.text.substring(0, sentence.offset).trim();
result.body = source.trim();
result.suffix = sentence.text.substring(sentence.offset + source.length).trim();
}
return result;
}
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static entryIndexFind(element) {
return $('.entry').index(element.closest('.entry'));
}
static adderButtonFind(index, mode) {
return $('.entry').eq(index).find(`.action-add-note[data-mode="${mode}"]`);
}
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static viewerButtonFind(index) {
return $('.entry').eq(index).find('.action-view-note');
}
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}