yomichan/ext/mixed/js/display.js

976 lines
31 KiB
JavaScript
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/*
* Copyright (C) 2017-2020 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
* AudioSystem
* DOM
* DisplayContext
* DisplayGenerator
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* MediaLoader
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* WindowScroll
* apiAudioGetUri
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* apiBroadcastTab
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* apiDefinitionAdd
* apiDefinitionsAddable
* apiKanjiFind
* apiNoteView
* apiOptionsGet
* apiScreenshotGet
* apiTermsFind
* docRangeFromPoint
* docSentenceExtract
*/
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class Display {
constructor(spinner, container) {
this.spinner = spinner;
this.container = container;
this.definitions = [];
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this.optionsContext = null;
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this.options = null;
this.context = null;
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this.index = 0;
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this.audioPlaying = null;
this.audioFallback = null;
this.audioSystem = new AudioSystem({
audioUriBuilder: {
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getUri: async (definition, source, details) => {
return await apiAudioGetUri(definition, source, details);
}
},
useCache: true
});
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this.styleNode = null;
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this.eventListeners = new EventListenerCollection();
this.persistentEventListeners = new EventListenerCollection();
this.interactive = false;
this.eventListenersActive = false;
this.clickScanPrevent = false;
this.setContentToken = null;
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this.mediaLoader = new MediaLoader();
this.displayGenerator = new DisplayGenerator({mediaLoader: this.mediaLoader});
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this.windowScroll = new WindowScroll();
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this._onKeyDownHandlers = new Map([
['Escape', () => {
this.onEscape();
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return true;
}],
['PageUp', (e) => {
if (e.altKey) {
this.entryScrollIntoView(this.index - 3, null, true);
return true;
}
return false;
}],
['PageDown', (e) => {
if (e.altKey) {
this.entryScrollIntoView(this.index + 3, null, true);
return true;
}
return false;
}],
['End', (e) => {
if (e.altKey) {
this.entryScrollIntoView(this.definitions.length - 1, null, true);
return true;
}
return false;
}],
['Home', (e) => {
if (e.altKey) {
this.entryScrollIntoView(0, null, true);
return true;
}
return false;
}],
['ArrowUp', (e) => {
if (e.altKey) {
this.entryScrollIntoView(this.index - 1, null, true);
return true;
}
return false;
}],
['ArrowDown', (e) => {
if (e.altKey) {
this.entryScrollIntoView(this.index + 1, null, true);
return true;
}
return false;
}],
['B', (e) => {
if (e.altKey) {
this.sourceTermView();
return true;
}
return false;
}],
['F', (e) => {
if (e.altKey) {
this.nextTermView();
return true;
}
return false;
}],
['E', (e) => {
if (e.altKey) {
this.noteTryAdd('term-kanji');
return true;
}
return false;
}],
['K', (e) => {
if (e.altKey) {
this.noteTryAdd('kanji');
return true;
}
return false;
}],
['R', (e) => {
if (e.altKey) {
this.noteTryAdd('term-kana');
return true;
}
return false;
}],
['P', (e) => {
if (e.altKey) {
const index = this.index;
if (index < 0 || index >= this.definitions.length) { return; }
const entry = this.getEntry(index);
if (entry !== null && entry.dataset.type === 'term') {
this.audioPlay(this.definitions[index], this.firstExpressionIndex, index);
}
return true;
}
return false;
}],
['V', (e) => {
if (e.altKey) {
this.noteTryView();
return true;
}
return false;
}]
]);
this.setInteractive(true);
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}
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async prepare() {
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await yomichan.prepare();
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await this.displayGenerator.prepare();
}
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onError(_error) {
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throw new Error('Override me');
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}
onEscape() {
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throw new Error('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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onNextTermView(e) {
e.preventDefault();
this.nextTermView();
}
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async onKanjiLookup(e) {
try {
e.preventDefault();
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if (!this.context) { return; }
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const link = e.target;
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this.context.update({
index: this.entryIndexFind(link),
scroll: this.windowScroll.y
});
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const context = {
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sentence: this.context.get('sentence'),
url: this.context.get('url')
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};
const definitions = await apiKanjiFind(link.textContent, this.getOptionsContext());
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this.setContent('kanji', {definitions, context});
} catch (error) {
this.onError(error);
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}
}
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onGlossaryMouseDown(e) {
if (DOM.isMouseButtonPressed(e, 'primary')) {
this.clickScanPrevent = false;
}
}
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onGlossaryMouseMove() {
this.clickScanPrevent = true;
}
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onGlossaryMouseUp(e) {
if (!this.clickScanPrevent && DOM.isMouseButtonPressed(e, 'primary')) {
this.onTermLookup(e);
}
}
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async onTermLookup(e, {disableScroll, selectText, disableHistory}={}) {
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try {
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if (!this.context) { return; }
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const termLookupResults = await this.termLookup(e);
if (!termLookupResults) { return; }
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const {textSource, definitions} = termLookupResults;
const scannedElement = e.target;
const sentence = docSentenceExtract(textSource, this.options.anki.sentenceExt);
this.context.update({
index: this.entryIndexFind(scannedElement),
scroll: this.windowScroll.y
});
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const context = {
disableScroll,
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disableHistory,
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sentence,
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url: this.context.get('url')
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};
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if (disableHistory) {
Object.assign(context, {
previous: this.context.previous,
next: this.context.next
});
} else {
Object.assign(context, {
previous: this.context
});
}
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this.setContent('terms', {definitions, context});
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if (selectText) {
textSource.select();
}
} catch (error) {
this.onError(error);
}
}
async termLookup(e) {
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try {
e.preventDefault();
const textSource = docRangeFromPoint(e.clientX, e.clientY, this.options.scanning.deepDomScan);
if (textSource === null) {
return false;
}
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let definitions, length;
try {
textSource.setEndOffset(this.options.scanning.length);
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({definitions, length} = await apiTermsFind(textSource.text(), {}, this.getOptionsContext()));
if (definitions.length === 0) {
return false;
}
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textSource.setEndOffset(length);
} finally {
textSource.cleanup();
}
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return {textSource, definitions};
} catch (error) {
this.onError(error);
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}
}
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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 index = this.entryIndexFind(entry);
if (index < 0 || index >= this.definitions.length) { return; }
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const expressionIndex = Display.indexOf(entry.querySelectorAll('.term-expression .action-play-audio'), link);
this.audioPlay(
this.definitions[index],
// expressionIndex is used in audioPlay to detect result output mode
Math.max(expressionIndex, this.options.general.resultOutputMode === 'merge' ? 0 : -1),
index
);
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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);
if (index < 0 || index >= this.definitions.length) { return; }
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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) {
const key = DOM.getKeyFromEvent(e);
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const handler = this._onKeyDownHandlers.get(key);
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if (typeof handler === 'function') {
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if (handler(e)) {
e.preventDefault();
return true;
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}
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}
return false;
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}
onWheel(e) {
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if (e.altKey) {
if (e.deltaY !== 0) {
this.entryScrollIntoView(this.index + (e.deltaY > 0 ? 1 : -1), null, true);
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e.preventDefault();
}
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} else if (e.shiftKey) {
this.onHistoryWheel(e);
}
}
onHistoryWheel(e) {
if (e.altKey) { return; }
const delta = -e.deltaX || e.deltaY;
if (delta > 0) {
this.sourceTermView();
e.preventDefault();
e.stopPropagation();
} else if (delta < 0) {
this.nextTermView();
e.preventDefault();
e.stopPropagation();
}
}
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getOptionsContext() {
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return this.optionsContext;
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}
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async updateOptions() {
this.options = await apiOptionsGet(this.getOptionsContext());
this.updateDocumentOptions(this.options);
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this.updateTheme(this.options.general.popupTheme);
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this.setCustomCss(this.options.general.customPopupCss);
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}
updateDocumentOptions(options) {
const data = document.documentElement.dataset;
data.ankiEnabled = `${options.anki.enable}`;
data.audioEnabled = `${options.audio.enabled}`;
data.compactGlossaries = `${options.general.compactGlossaries}`;
data.enableSearchTags = `${options.scanning.enableSearchTags}`;
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data.showPitchAccentDownstepNotation = `${options.general.showPitchAccentDownstepNotation}`;
data.showPitchAccentPositionNotation = `${options.general.showPitchAccentPositionNotation}`;
data.showPitchAccentGraph = `${options.general.showPitchAccentGraph}`;
data.debug = `${options.general.debugInfo}`;
}
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updateTheme(themeName) {
document.documentElement.dataset.yomichanTheme = themeName;
const stylesheets = document.querySelectorAll('link[data-yomichan-theme-name]');
for (const stylesheet of stylesheets) {
const match = (stylesheet.dataset.yomichanThemeName === themeName);
stylesheet.rel = (match ? 'stylesheet' : 'stylesheet alternate');
}
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}
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setCustomCss(css) {
if (this.styleNode === null) {
if (css.length === 0) { return; }
this.styleNode = document.createElement('style');
}
this.styleNode.textContent = css;
const parent = document.head;
if (this.styleNode.parentNode !== parent) {
parent.appendChild(this.styleNode);
}
}
setInteractive(interactive) {
interactive = !!interactive;
if (this.interactive === interactive) { return; }
this.interactive = interactive;
if (interactive) {
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const actionPrevious = document.querySelector('.action-previous');
const actionNext = document.querySelector('.action-next');
// const navigationHeader = document.querySelector('.navigation-header');
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this.persistentEventListeners.addEventListener(document, 'keydown', this.onKeyDown.bind(this), false);
this.persistentEventListeners.addEventListener(document, 'wheel', this.onWheel.bind(this), {passive: false});
if (actionPrevious !== null) {
this.persistentEventListeners.addEventListener(actionPrevious, 'click', this.onSourceTermView.bind(this));
}
if (actionNext !== null) {
this.persistentEventListeners.addEventListener(actionNext, 'click', this.onNextTermView.bind(this));
}
// temporarily disabled
// if (navigationHeader !== null) {
// this.persistentEventListeners.addEventListener(navigationHeader, 'wheel', this.onHistoryWheel.bind(this), {passive: false});
// }
} else {
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this.persistentEventListeners.removeAllEventListeners();
}
this.setEventListenersActive(this.eventListenersActive);
}
setEventListenersActive(active) {
active = !!active && this.interactive;
if (this.eventListenersActive === active) { return; }
this.eventListenersActive = active;
if (active) {
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this.addMultipleEventListeners('.action-add-note', 'click', this.onNoteAdd.bind(this));
this.addMultipleEventListeners('.action-view-note', 'click', this.onNoteView.bind(this));
this.addMultipleEventListeners('.action-play-audio', 'click', this.onAudioPlay.bind(this));
this.addMultipleEventListeners('.kanji-link', 'click', this.onKanjiLookup.bind(this));
if (this.options.scanning.enablePopupSearch) {
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this.addMultipleEventListeners('.term-glossary-item, .tag', 'mouseup', this.onGlossaryMouseUp.bind(this));
this.addMultipleEventListeners('.term-glossary-item, .tag', 'mousedown', this.onGlossaryMouseDown.bind(this));
this.addMultipleEventListeners('.term-glossary-item, .tag', 'mousemove', this.onGlossaryMouseMove.bind(this));
}
} else {
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this.eventListeners.removeAllEventListeners();
}
}
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addMultipleEventListeners(selector, type, listener, options) {
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for (const node of this.container.querySelectorAll(selector)) {
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this.eventListeners.addEventListener(node, type, listener, options);
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}
}
async setContent(type, details) {
const token = {}; // Unique identifier token
this.setContentToken = token;
try {
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this.mediaLoader.unloadAll();
switch (type) {
case 'terms':
await this.setContentTerms(details.definitions, details.context, token);
break;
case 'kanji':
await this.setContentKanji(details.definitions, details.context, token);
break;
case 'orphaned':
this.setContentOrphaned();
break;
}
} catch (e) {
this.onError(e);
} finally {
if (this.setContentToken === token) {
this.setContentToken = null;
}
}
}
async setContentTerms(definitions, context, token) {
if (!context) { throw new Error('Context expected'); }
this.setEventListenersActive(false);
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if (context.focus !== false) {
window.focus();
}
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this.definitions = definitions;
if (context.disableHistory) {
delete context.disableHistory;
this.context = new DisplayContext('terms', definitions, context);
} else {
this.context = DisplayContext.push(this.context, 'terms', definitions, context);
}
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for (const definition of definitions) {
definition.cloze = Display.clozeBuild(context.sentence, definition.source);
definition.url = context.url;
}
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this.updateNavigation(this.context.previous, this.context.next);
this.setNoContentVisible(definitions.length === 0);
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const container = this.container;
container.textContent = '';
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for (let i = 0, ii = definitions.length; i < ii; ++i) {
if (i > 0) {
await promiseTimeout(1);
if (this.setContentToken !== token) { return; }
}
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const entry = this.displayGenerator.createTermEntry(definitions[i]);
container.appendChild(entry);
}
const {index, scroll, disableScroll} = context;
if (!disableScroll) {
this.entryScrollIntoView(index || 0, scroll);
} else {
delete context.disableScroll;
this.entrySetCurrent(index || 0);
}
if (this.options.audio.enabled && this.options.audio.autoPlay) {
this.autoPlayAudio();
}
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this.setEventListenersActive(true);
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const states = await this.getDefinitionsAddable(definitions, ['term-kanji', 'term-kana']);
if (this.setContentToken !== token) { return; }
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this.updateAdderButtons(states);
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}
async setContentKanji(definitions, context, token) {
if (!context) { throw new Error('Context expected'); }
this.setEventListenersActive(false);
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if (context.focus !== false) {
window.focus();
}
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this.definitions = definitions;
if (context.disableHistory) {
delete context.disableHistory;
this.context = new DisplayContext('kanji', definitions, context);
} else {
this.context = DisplayContext.push(this.context, 'kanji', definitions, context);
}
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for (const definition of definitions) {
definition.cloze = Display.clozeBuild(context.sentence, definition.character);
definition.url = context.url;
}
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this.updateNavigation(this.context.previous, this.context.next);
this.setNoContentVisible(definitions.length === 0);
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const container = this.container;
container.textContent = '';
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for (let i = 0, ii = definitions.length; i < ii; ++i) {
if (i > 0) {
await promiseTimeout(1);
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if (this.setContentToken !== token) { return; }
}
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const entry = this.displayGenerator.createKanjiEntry(definitions[i]);
container.appendChild(entry);
}
const {index, scroll} = context;
this.entryScrollIntoView(index || 0, scroll);
this.setEventListenersActive(true);
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const states = await this.getDefinitionsAddable(definitions, ['kanji']);
if (this.setContentToken !== token) { return; }
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this.updateAdderButtons(states);
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}
setContentOrphaned() {
const errorOrphaned = document.querySelector('#error-orphaned');
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if (this.container !== null) {
this.container.hidden = true;
}
if (errorOrphaned !== null) {
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errorOrphaned.hidden = false;
}
this.updateNavigation(null, null);
this.setNoContentVisible(false);
}
setNoContentVisible(visible) {
const noResults = document.querySelector('#no-results');
if (noResults !== null) {
noResults.hidden = !visible;
}
}
updateNavigation(previous, next) {
const navigation = document.querySelector('#navigation-header');
if (navigation !== null) {
navigation.hidden = !(previous || next);
navigation.dataset.hasPrevious = `${!!previous}`;
navigation.dataset.hasNext = `${!!next}`;
}
}
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autoPlayAudio() {
if (this.definitions.length === 0) { return; }
this.audioPlay(this.definitions[0], this.firstExpressionIndex, 0);
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}
updateAdderButtons(states) {
for (let i = 0; i < states.length; ++i) {
let noteId = null;
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for (const [mode, info] of Object.entries(states[i])) {
const button = this.adderButtonFind(i, mode);
if (button === null) {
continue;
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}
if (!info.canAdd && noteId === null && info.noteId) {
noteId = info.noteId;
}
button.classList.toggle('disabled', !info.canAdd);
button.classList.remove('pending');
}
if (noteId !== null) {
this.viewerButtonShow(i, noteId);
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}
}
}
entrySetCurrent(index) {
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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.index = index;
return entry;
}
entryScrollIntoView(index, scroll, smooth) {
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this.windowScroll.stop();
const entry = this.entrySetCurrent(index);
let target;
if (scroll !== null) {
target = scroll;
} else {
target = this.index === 0 || entry === null ? 0 : Display.getElementTop(entry);
const header = document.querySelector('#navigation-header');
if (header !== null) {
target -= header.getBoundingClientRect().height;
}
}
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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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}
}
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sourceTermView() {
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if (!this.context || !this.context.previous) { return; }
this.context.update({
index: this.index,
scroll: this.windowScroll.y
});
const previousContext = this.context.previous;
previousContext.set('disableHistory', true);
const details = {
definitions: previousContext.definitions,
context: previousContext.context
};
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this.setContent(previousContext.type, details);
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}
nextTermView() {
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if (!this.context || !this.context.next) { return; }
this.context.update({
index: this.index,
scroll: this.windowScroll.y
});
const nextContext = this.context.next;
nextContext.set('disableHistory', true);
const details = {
definitions: nextContext.definitions,
context: nextContext.context
};
this.setContent(nextContext.type, details);
}
noteTryAdd(mode) {
const index = this.index;
if (index < 0 || index >= this.definitions.length) { return; }
const button = this.adderButtonFind(index, mode);
if (button !== null && !button.classList.contains('disabled')) {
this.noteAdd(this.definitions[index], mode);
}
}
noteTryView() {
const button = this.viewerButtonFind(this.index);
if (button !== null && !button.classList.contains('disabled')) {
apiNoteView(button.dataset.noteId);
}
}
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async noteAdd(definition, mode) {
try {
this.setSpinnerVisible(true);
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const details = {};
if (this.noteUsesScreenshot(mode)) {
const screenshot = await this.getScreenshot();
if (screenshot) {
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details.screenshot = screenshot;
}
}
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const context = await this._getNoteContext();
const noteId = await apiDefinitionAdd(definition, mode, context, details, this.getOptionsContext());
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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');
}
this.viewerButtonShow(index, noteId);
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} else {
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throw new Error('Note could not 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, entryIndex) {
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try {
this.setSpinnerVisible(true);
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const expression = expressionIndex === -1 ? definition : definition.expressions[expressionIndex];
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this._stopPlayingAudio();
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let audio, info;
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try {
const {sources, textToSpeechVoice, customSourceUrl} = this.options.audio;
let index;
({audio, index} = await this.audioSystem.getDefinitionAudio(expression, sources, {textToSpeechVoice, customSourceUrl}));
info = `From source ${1 + index}: ${sources[index]}`;
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} catch (e) {
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if (this.audioFallback === null) {
this.audioFallback = new Audio('/mixed/mp3/button.mp3');
}
audio = this.audioFallback;
info = 'Could not find audio';
}
const button = this.audioButtonFindImage(entryIndex, expressionIndex);
if (button !== null) {
let titleDefault = button.dataset.titleDefault;
if (!titleDefault) {
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titleDefault = button.title || '';
button.dataset.titleDefault = titleDefault;
}
button.title = `${titleDefault}\n${info}`;
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}
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this._stopPlayingAudio();
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this.audioPlaying = audio;
audio.currentTime = 0;
audio.volume = this.options.audio.volume / 100.0;
const playPromise = audio.play();
if (typeof playPromise !== 'undefined') {
try {
await playPromise;
} catch (e2) {
// NOP
}
}
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} catch (e) {
this.onError(e);
} finally {
this.setSpinnerVisible(false);
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}
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}
_stopPlayingAudio() {
if (this.audioPlaying !== null) {
this.audioPlaying.pause();
this.audioPlaying = null;
}
}
noteUsesScreenshot(mode) {
const optionsAnki = this.options.anki;
const fields = (mode === 'kanji' ? optionsAnki.kanji : optionsAnki.terms).fields;
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for (const fieldValue of Object.values(fields)) {
if (fieldValue.includes('{screenshot}')) {
return true;
}
}
return false;
}
async getScreenshot() {
try {
await this.setPopupVisibleOverride(false);
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await promiseTimeout(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 {
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await this.setPopupVisibleOverride(null);
}
}
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get firstExpressionIndex() {
return this.options.general.resultOutputMode === 'merge' ? 0 : -1;
}
setPopupVisibleOverride(visible) {
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return apiBroadcastTab('popupSetVisibleOverride', {visible});
}
setSpinnerVisible(visible) {
if (this.spinner !== null) {
this.spinner.hidden = !visible;
}
}
getEntry(index) {
const entries = this.container.querySelectorAll('.entry');
return index >= 0 && index < entries.length ? entries[index] : null;
}
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static clozeBuild({text, offset}, source) {
return {
sentence: text.trim(),
prefix: text.substring(0, offset).trim(),
body: text.substring(offset, offset + source.length),
suffix: text.substring(offset + source.length).trim()
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};
}
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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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}
viewerButtonShow(index, noteId) {
const viewerButton = this.viewerButtonFind(index);
if (viewerButton === null) {
return;
}
viewerButton.classList.remove('pending', 'disabled');
viewerButton.dataset.noteId = noteId;
}
audioButtonFindImage(index, expressionIndex) {
const entry = this.getEntry(index);
if (entry === null) { return null; }
const container = (
expressionIndex >= 0 ?
entry.querySelector(`.term-expression:nth-of-type(${expressionIndex + 1})`) :
entry
);
return container !== null ? container.querySelector('.action-play-audio>img') : null;
}
async getDefinitionsAddable(definitions, modes) {
try {
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const context = await this._getNoteContext();
return await apiDefinitionsAddable(definitions, modes, context, this.getOptionsContext());
} catch (e) {
return [];
}
}
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async getDocumentTitle() {
return document.title;
}
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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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static getElementTop(element) {
const elementRect = element.getBoundingClientRect();
const documentRect = document.documentElement.getBoundingClientRect();
return elementRect.top - documentRect.top;
}
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async _getNoteContext() {
const documentTitle = await this.getDocumentTitle();
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return {
document: {
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title: documentTitle
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}
};
}
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}