yomichan/ext/mixed/js/display.js
2019-10-10 21:30:38 -04:00

678 lines
21 KiB
JavaScript

/*
* 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 = [];
this.options = null;
this.context = null;
this.sequence = 0;
this.index = 0;
this.audioPlaying = null;
this.audioFallback = null;
this.audioCache = {};
this.optionsContext = {};
this.eventListeners = [];
this.dependencies = {};
this.windowScroll = new WindowScroll();
document.addEventListener('keydown', this.onKeyDown.bind(this));
document.addEventListener('wheel', this.onWheel.bind(this), {passive: false});
}
onError(error) {
throw new Error('Override me');
}
onSearchClear() {
throw new Error('Override me');
}
onSourceTermView(e) {
e.preventDefault();
this.sourceTermView();
}
async onKanjiLookup(e) {
try {
e.preventDefault();
const link = e.target;
this.windowScroll.toY(0);
const context = {
source: {
definitions: this.definitions,
index: this.entryIndexFind(link),
scroll: this.windowScroll.y
}
};
if (this.context) {
context.sentence = this.context.sentence;
context.url = this.context.url;
context.source.source = this.context.source;
}
const kanjiDefs = await apiKanjiFind(link.textContent, this.optionsContext);
this.kanjiShow(kanjiDefs, this.options, context);
} catch (e) {
this.onError(e);
}
}
async onTermLookup(e) {
try {
e.preventDefault();
const {docRangeFromPoint, docSentenceExtract} = this.dependencies;
const clickedElement = e.target;
const textSource = docRangeFromPoint(e.clientX, e.clientY, this.options);
if (textSource === null) {
return false;
}
let definitions, length, sentence;
try {
textSource.setEndOffset(this.options.scanning.length);
({definitions, length} = await apiTermsFind(textSource.text(), this.optionsContext));
if (definitions.length === 0) {
return false;
}
textSource.setEndOffset(length);
sentence = docSentenceExtract(textSource, this.options.anki.sentenceExt);
} finally {
textSource.cleanup();
}
this.windowScroll.toY(0);
const context = {
source: {
definitions: this.definitions,
index: this.entryIndexFind(clickedElement),
scroll: this.windowScroll.y
}
};
if (this.context) {
context.sentence = sentence;
context.url = this.context.url;
context.source.source = this.context.source;
}
this.termsShow(definitions, this.options, context);
} catch (e) {
this.onError(e);
}
}
onAudioPlay(e) {
e.preventDefault();
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, definitionIndex);
}
onNoteAdd(e) {
e.preventDefault();
const link = e.currentTarget;
const index = this.entryIndexFind(link);
this.noteAdd(this.definitions[index], link.dataset.mode);
}
onNoteView(e) {
e.preventDefault();
const link = e.currentTarget;
apiNoteView(link.dataset.noteId);
}
onKeyDown(e) {
const key = Display.getKeyFromEvent(e);
const handlers = Display.onKeyDownHandlers;
if (handlers.hasOwnProperty(key)) {
const handler = handlers[key];
if (handler(this, e)) {
e.preventDefault();
}
}
}
onWheel(e) {
if (e.altKey) {
const delta = e.deltaY;
if (delta !== 0) {
this.entryScrollIntoView(this.index + (delta > 0 ? 1 : -1), null, true);
e.preventDefault();
}
}
}
async termsShow(definitions, options, context) {
try {
this.clearEventListeners();
if (!context || context.focus !== false) {
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,
grouped: options.general.resultOutputMode === 'group',
merged: options.general.resultOutputMode === 'merge',
playback: options.audio.enabled,
compactGlossaries: options.general.compactGlossaries,
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);
if (this.options.audio.enabled && this.options.audio.autoPlay) {
this.autoPlayAudio();
}
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));
if (this.options.scanning.enablePopupSearch) {
this.addEventListeners('.glossary-item', 'click', this.onTermLookup.bind(this));
}
await this.adderButtonUpdate(['term-kanji', 'term-kana'], sequence);
} catch (e) {
this.onError(e);
}
}
async kanjiShow(definitions, options, context) {
try {
this.clearEventListeners();
if (!context || context.focus !== false) {
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.innerHTML = content;
const {index, scroll} = context || {};
this.entryScrollIntoView(index || 0, scroll);
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));
await this.adderButtonUpdate(['kanji'], sequence);
} catch (e) {
this.onError(e);
}
}
autoPlayAudio() {
this.audioPlay(this.definitions[0], this.firstExpressionIndex, 0);
}
async adderButtonUpdate(modes, sequence) {
try {
const states = await apiDefinitionsAddable(this.definitions, modes, this.optionsContext);
if (!states || sequence !== this.sequence) {
return;
}
for (let i = 0; i < states.length; ++i) {
const state = states[i];
let noteId = null;
for (const mode in state) {
const button = this.adderButtonFind(i, mode);
if (button === null) {
continue;
}
const info = state[mode];
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);
}
}
} catch (e) {
this.onError(e);
}
}
entryScrollIntoView(index, scroll, smooth) {
index = Math.min(index, this.definitions.length - 1);
index = Math.max(index, 0);
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');
}
this.windowScroll.stop();
let target;
if (scroll) {
target = scroll;
} else {
target = index === 0 || entry === null ? 0 : Display.getElementTop(entry);
}
if (smooth) {
this.windowScroll.animate(this.windowScroll.x, target, 200);
} else {
this.windowScroll.toY(target);
}
this.index = index;
}
sourceTermView() {
if (this.context && this.context.source) {
const context = {
url: this.context.source.url,
sentence: this.context.source.sentence,
index: this.context.source.index,
scroll: this.context.source.scroll,
source: this.context.source.source
};
this.termsShow(this.context.source.definitions, this.options, context);
}
}
noteTryAdd(mode) {
const button = this.adderButtonFind(this.index, mode);
if (button !== null && !button.classList.contains('disabled')) {
this.noteAdd(this.definitions[this.index], mode);
}
}
noteTryView() {
const button = this.viewerButtonFind(this.index);
if (button !== null && !button.classList.contains('disabled')) {
apiNoteView(button.dataset.noteId);
}
}
async noteAdd(definition, mode) {
try {
this.setSpinnerVisible(true);
const context = {};
if (this.noteUsesScreenshot()) {
const screenshot = await this.getScreenshot();
if (screenshot) {
context.screenshot = screenshot;
}
}
const noteId = await apiDefinitionAdd(definition, mode, context, this.optionsContext);
if (noteId) {
const index = this.definitions.indexOf(definition);
const adderButton = this.adderButtonFind(index, mode);
if (adderButton !== null) {
adderButton.classList.add('disabled');
}
this.viewerButtonShow(index, noteId);
} else {
throw new Error('Note could not be added');
}
} catch (e) {
this.onError(e);
} finally {
this.setSpinnerVisible(false);
}
}
async audioPlay(definition, expressionIndex, entryIndex) {
try {
this.setSpinnerVisible(true);
const expression = expressionIndex === -1 ? definition : definition.expressions[expressionIndex];
if (this.audioPlaying !== null) {
this.audioPlaying.pause();
this.audioPlaying = null;
}
const sources = this.options.audio.sources;
let {audio, source} = await audioGetFromSources(expression, sources, this.optionsContext, true, this.audioCache);
let info;
if (audio === null) {
if (this.audioFallback === null) {
this.audioFallback = new Audio('/mixed/mp3/button.mp3');
}
audio = this.audioFallback;
info = 'Could not find audio';
} else {
info = `From source ${1 + sources.indexOf(source)}: ${source}`;
}
const button = this.audioButtonFindImage(entryIndex);
if (button !== null) {
let titleDefault = button.dataset.titleDefault;
if (!titleDefault) {
titleDefault = button.title || "";
button.dataset.titleDefault = titleDefault;
}
button.title = `${titleDefault}\n${info}`;
}
this.audioPlaying = audio;
audio.currentTime = 0;
audio.volume = this.options.audio.volume / 100.0;
audio.play();
} catch (e) {
this.onError(e);
} finally {
this.setSpinnerVisible(false);
}
}
noteUsesScreenshot() {
const fields = this.options.anki.terms.fields;
for (const name in fields) {
if (fields[name].includes('{screenshot}')) {
return true;
}
}
return false;
}
async getScreenshot() {
try {
await this.setPopupVisibleOverride(false);
await Display.delay(1); // Wait for popup to be hidden.
const {format, quality} = this.options.anki.screenshot;
const dataUrl = await apiScreenshotGet({format, quality});
if (!dataUrl || dataUrl.error) { return; }
return {dataUrl, format};
} finally {
await this.setPopupVisibleOverride(null);
}
}
get firstExpressionIndex() {
return this.options.general.resultOutputMode === 'merge' ? 0 : -1;
}
setPopupVisibleOverride(visible) {
return apiForward('popupSetVisibleOverride', {visible});
}
setSpinnerVisible(visible) {
this.spinner.style.display = visible ? 'block' : '';
}
getEntry(index) {
const entries = this.container.querySelectorAll('.entry');
return index >= 0 && index < entries.length ? entries[index] : null;
}
static clozeBuild(sentence, source) {
const result = {
sentence: sentence.text.trim()
};
if (source) {
result.prefix = sentence.text.substring(0, sentence.offset).trim();
result.body = source.trim();
result.suffix = sentence.text.substring(sentence.offset + source.length).trim();
}
return result;
}
entryIndexFind(element) {
const entry = element.closest('.entry');
return entry !== null ? Display.indexOf(this.container.querySelectorAll('.entry'), entry) : -1;
}
adderButtonFind(index, mode) {
const entry = this.getEntry(index);
return entry !== null ? entry.querySelector(`.action-add-note[data-mode="${mode}"]`) : null;
}
viewerButtonFind(index) {
const entry = this.getEntry(index);
return entry !== null ? entry.querySelector('.action-view-note') : null;
}
viewerButtonShow(index, noteId) {
const viewerButton = this.viewerButtonFind(index);
if (viewerButton === null) {
return;
}
viewerButton.classList.remove('pending', 'disabled');
viewerButton.dataset.noteId = noteId;
}
audioButtonFindImage(index) {
const entry = this.getEntry(index);
return entry !== null ? entry.querySelector('.action-play-audio>img') : null;
}
static delay(time) {
return new Promise((resolve) => setTimeout(resolve, time));
}
static indexOf(nodeList, node) {
for (let i = 0, ii = nodeList.length; i < ii; ++i) {
if (nodeList[i] === node) {
return i;
}
}
return -1;
}
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 = [];
}
static getElementTop(element) {
const elementRect = element.getBoundingClientRect();
const documentRect = document.documentElement.getBoundingClientRect();
return elementRect.top - documentRect.top;
}
static getKeyFromEvent(event) {
const key = event.key;
return (typeof key === 'string' ? (key.length === 1 ? key.toUpperCase() : key) : '');
}
}
Display.onKeyDownHandlers = {
'Escape': (self) => {
self.onSearchClear();
return true;
},
'PageUp': (self, e) => {
if (e.altKey) {
self.entryScrollIntoView(self.index - 3, null, true);
return true;
}
return false;
},
'PageDown': (self, e) => {
if (e.altKey) {
self.entryScrollIntoView(self.index + 3, null, true);
return true;
}
return false;
},
'End': (self, e) => {
if (e.altKey) {
self.entryScrollIntoView(self.definitions.length - 1, null, true);
return true;
}
return false;
},
'Home': (self, e) => {
if (e.altKey) {
self.entryScrollIntoView(0, null, true);
return true;
}
return false;
},
'ArrowUp': (self, e) => {
if (e.altKey) {
self.entryScrollIntoView(self.index - 1, null, true);
return true;
}
return false;
},
'ArrowDown': (self, e) => {
if (e.altKey) {
self.entryScrollIntoView(self.index + 1, null, true);
return true;
}
return false;
},
'B': (self, e) => {
if (e.altKey) {
self.sourceTermView();
return true;
}
return false;
},
'E': (self, e) => {
if (e.altKey) {
self.noteTryAdd('term-kanji');
return true;
}
return false;
},
'K': (self, e) => {
if (e.altKey) {
self.noteTryAdd('kanji');
return true;
}
return false;
},
'R': (self, e) => {
if (e.altKey) {
self.noteTryAdd('term-kana');
return true;
}
return false;
},
'P': (self, e) => {
if (e.altKey) {
const entry = self.getEntry(self.index);
if (entry !== null && entry.dataset.type === 'term') {
self.audioPlay(self.definitions[self.index], self.firstExpressionIndex, self.index);
}
return true;
}
return false;
},
'V': (self, e) => {
if (e.altKey) {
self.noteTryView();
return true;
}
return false;
}
};