yomichan/ext/mixed/js/display.js

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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 = {};
this.optionsContext = {};
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this.eventListeners = [];
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this.dependencies = {};
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this.windowScroll = new WindowScroll();
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document.addEventListener('keydown', this.onKeyDown.bind(this));
document.addEventListener('wheel', this.onWheel.bind(this), {passive: false});
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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;
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this.windowScroll.toY(0);
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const context = {
source: {
definitions: this.definitions,
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index: this.entryIndexFind(link),
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scroll: this.windowScroll.y
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}
};
if (this.context) {
context.sentence = this.context.sentence;
context.url = this.context.url;
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context.source.source = this.context.source;
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}
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const kanjiDefs = await apiKanjiFind(link.textContent, this.optionsContext);
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this.kanjiShow(kanjiDefs, this.options, context);
} catch (e) {
this.onError(e);
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}
}
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async onTermLookup(e) {
try {
e.preventDefault();
const {docRangeFromPoint, docSentenceExtract} = this.dependencies;
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const clickedElement = e.target;
const textSource = docRangeFromPoint(e.clientX, e.clientY, this.options);
if (textSource === null) {
return false;
}
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let definitions, length, sentence;
try {
textSource.setEndOffset(this.options.scanning.length);
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({definitions, length} = await apiTermsFind(textSource.text(), this.optionsContext));
if (definitions.length === 0) {
return false;
}
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textSource.setEndOffset(length);
sentence = docSentenceExtract(textSource, this.options.anki.sentenceExt);
} finally {
textSource.cleanup();
}
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this.windowScroll.toY(0);
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const context = {
source: {
definitions: this.definitions,
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index: this.entryIndexFind(clickedElement),
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scroll: this.windowScroll.y
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}
};
if (this.context) {
context.sentence = sentence;
context.url = this.context.url;
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context.source.source = this.context.source;
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}
this.termsShow(definitions, this.options, context);
} catch (e) {
this.onError(e);
}
}
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onAudioPlay(e) {
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e.preventDefault();
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const link = e.currentTarget;
const entry = link.closest('.entry');
const definitionIndex = this.entryIndexFind(entry);
const expressionIndex = Display.indexOf(entry.querySelectorAll('.expression .action-play-audio'), link);
this.audioPlay(this.definitions[definitionIndex], expressionIndex);
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}
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onNoteAdd(e) {
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e.preventDefault();
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const link = e.currentTarget;
const index = this.entryIndexFind(link);
this.noteAdd(this.definitions[index], link.dataset.mode);
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}
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onNoteView(e) {
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e.preventDefault();
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const link = e.currentTarget;
apiNoteView(link.dataset.noteId);
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}
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onKeyDown(e) {
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const noteTryAdd = mode => {
const button = this.adderButtonFind(this.index, mode);
if (button !== null && !button.classList.contains('disabled')) {
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this.noteAdd(this.definitions[this.index], mode);
}
};
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const noteTryView = mode => {
const button = this.viewerButtonFind(this.index);
if (button !== null && !button.classList.contains('disabled')) {
apiNoteView(button.dataset.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) {
this.entryScrollIntoView(this.index - 3, null, true);
return true;
}
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},
34: /* page down */ () => {
if (e.altKey) {
this.entryScrollIntoView(this.index + 3, null, true);
return true;
}
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},
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35: /* end */ () => {
if (e.altKey) {
this.entryScrollIntoView(this.definitions.length - 1, null, true);
return true;
}
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},
36: /* home */ () => {
if (e.altKey) {
this.entryScrollIntoView(0, null, true);
return true;
}
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},
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38: /* up */ () => {
if (e.altKey) {
this.entryScrollIntoView(this.index - 1, null, true);
return true;
}
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},
40: /* down */ () => {
if (e.altKey) {
this.entryScrollIntoView(this.index + 1, null, 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) {
const entry = this.getEntry(this.index);
if (entry !== null && entry.dataset.type === 'term') {
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this.audioPlay(this.definitions[this.index], this.firstExpressionIndex);
}
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 handler = () => {
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if (e.altKey) {
if (e.deltaY < 0) { // scroll up
this.entryScrollIntoView(this.index - 1, null, true);
return true;
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} else if (e.deltaY > 0) { // scroll down
this.entryScrollIntoView(this.index + 1, null, true);
return true;
}
}
};
if (handler()) {
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e.preventDefault();
}
}
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async termsShow(definitions, options, context) {
try {
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this.clearEventListeners();
if (!context || context.focus !== false) {
window.focus();
}
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this.definitions = definitions;
this.options = options;
this.context = context;
const sequence = ++this.sequence;
const params = {
definitions,
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source: context && context.source,
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addable: options.anki.enable,
grouped: options.general.resultOutputMode === 'group',
merged: options.general.resultOutputMode === 'merge',
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playback: options.general.audioSource !== 'disabled',
compactGlossaries: options.general.compactGlossaries,
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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.innerHTML = content;
const {index, scroll} = context || {};
this.entryScrollIntoView(index || 0, scroll);
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if (this.options.general.autoPlayAudio && this.options.general.audioSource !== 'disabled') {
this.autoPlayAudio();
}
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this.addEventListeners('.action-add-note', 'click', this.onNoteAdd.bind(this));
this.addEventListeners('.action-view-note', 'click', this.onNoteView.bind(this));
this.addEventListeners('.action-play-audio', 'click', this.onAudioPlay.bind(this));
this.addEventListeners('.kanji-link', 'click', this.onKanjiLookup.bind(this));
this.addEventListeners('.source-term', 'click', this.onSourceTermView.bind(this));
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if (this.options.scanning.enablePopupSearch) {
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this.addEventListeners('.glossary-item', 'click', this.onTermLookup.bind(this));
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}
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await this.adderButtonUpdate(['term-kanji', 'term-kana'], sequence);
} catch (e) {
this.onError(e);
}
}
async kanjiShow(definitions, options, context) {
try {
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this.clearEventListeners();
if (!context || context.focus !== false) {
window.focus();
}
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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.innerHTML = content;
const {index, scroll} = context || {};
this.entryScrollIntoView(index || 0, scroll);
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this.addEventListeners('.action-add-note', 'click', this.onNoteAdd.bind(this));
this.addEventListeners('.action-view-note', 'click', this.onNoteView.bind(this));
this.addEventListeners('.source-term', 'click', this.onSourceTermView.bind(this));
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await this.adderButtonUpdate(['kanji'], sequence);
} catch (e) {
this.onError(e);
}
}
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autoPlayAudio() {
this.audioPlay(this.definitions[0], this.firstExpressionIndex);
}
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async adderButtonUpdate(modes, sequence) {
try {
const states = await apiDefinitionsAddable(this.definitions, modes, this.optionsContext);
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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 = this.adderButtonFind(i, mode);
if (button === null) {
continue;
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}
button.classList.toggle('disabled', !state[mode]);
button.classList.remove('pending');
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}
}
} catch (e) {
this.onError(e);
}
}
entryScrollIntoView(index, scroll, smooth) {
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index = Math.min(index, this.definitions.length - 1);
index = Math.max(index, 0);
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const entryPre = this.getEntry(this.index);
if (entryPre !== null) {
entryPre.classList.remove('entry-current');
}
const entry = this.getEntry(index);
if (entry !== null) {
entry.classList.add('entry-current');
}
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this.windowScroll.stop();
let target;
if (scroll) {
target = scroll;
} else {
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target = index === 0 || entry === null ? 0 : Display.getElementTop(entry);
}
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if (smooth) {
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this.windowScroll.animate(this.windowScroll.x, target, 200);
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} else {
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this.windowScroll.toY(target);
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}
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,
scroll: this.context.source.scroll,
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source: this.context.source.source
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};
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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.setSpinnerVisible(true);
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const context = {};
if (this.noteUsesScreenshot()) {
const screenshot = await this.getScreenshot();
if (screenshot) {
context.screenshot = screenshot;
}
}
const noteId = await apiDefinitionAdd(definition, mode, context, this.optionsContext);
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if (noteId) {
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const index = this.definitions.indexOf(definition);
const adderButton = this.adderButtonFind(index, mode);
if (adderButton !== null) {
adderButton.classList.add('disabled');
}
const viewerButton = this.viewerButtonFind(index);
if (viewerButton !== null) {
viewerButton.classList.remove('pending', 'disabled');
viewerButton.dataset.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.setSpinnerVisible(false);
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}
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}
async audioPlay(definition, expressionIndex) {
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try {
this.setSpinnerVisible(true);
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const expression = expressionIndex === -1 ? definition : definition.expressions[expressionIndex];
let url = await apiAudioGetUrl(expression, 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.setSpinnerVisible(false);
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}
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}
noteUsesScreenshot() {
const fields = this.options.anki.terms.fields;
for (const name in fields) {
if (fields[name].includes('{screenshot}')) {
return true;
}
}
return false;
}
async getScreenshot() {
try {
await this.setPopupVisible(false);
await Display.delay(1); // Wait for popup to be hidden.
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const {format, quality} = this.options.anki.screenshot;
const dataUrl = await apiScreenshotGet({format, quality});
if (!dataUrl || dataUrl.error) { return; }
return {dataUrl, format};
} finally {
await this.setPopupVisible(true);
}
}
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get firstExpressionIndex() {
return this.options.general.resultOutputMode === 'merge' ? 0 : -1;
}
setPopupVisible(visible) {
return apiForward('popupSetVisible', {visible});
}
setSpinnerVisible(visible) {
this.spinner.style.display = visible ? 'block' : '';
}
getEntry(index) {
const entries = this.container.querySelectorAll('.entry');
return index >= 0 && index < entries.length ? entries[index] : null;
}
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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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entryIndexFind(element) {
const entry = element.closest('.entry');
return entry !== null ? Display.indexOf(this.container.querySelectorAll('.entry'), entry) : -1;
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}
adderButtonFind(index, mode) {
const entry = this.getEntry(index);
return entry !== null ? entry.querySelector(`.action-add-note[data-mode="${mode}"]`) : null;
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}
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viewerButtonFind(index) {
const entry = this.getEntry(index);
return entry !== null ? entry.querySelector('.action-view-note') : null;
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}
static delay(time) {
return new Promise((resolve) => setTimeout(resolve, time));
}
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static indexOf(nodeList, node) {
for (let i = 0, ii = nodeList.length; i < ii; ++i) {
if (nodeList[i] === node) {
return i;
}
}
return -1;
}
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addEventListeners(selector, type, listener, options) {
this.container.querySelectorAll(selector).forEach((node) => {
node.addEventListener(type, listener, options);
this.eventListeners.push([node, type, listener, options]);
});
}
clearEventListeners() {
for (const [node, type, listener, options] of this.eventListeners) {
node.removeEventListener(type, listener, options);
}
this.eventListeners = [];
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}
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static getElementTop(element) {
const elementRect = element.getBoundingClientRect();
const documentRect = document.documentElement.getBoundingClientRect();
return elementRect.top - documentRect.top;
}
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}