yomichan/ext/fg/js/float.js

175 lines
5.2 KiB
JavaScript

/*
* Copyright (C) 2016-2020 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 <https://www.gnu.org/licenses/>.
*/
/*global popupNestedInitialize, apiForward, apiGetMessageToken, Display*/
class DisplayFloat extends Display {
constructor() {
super(document.querySelector('#spinner'), document.querySelector('#definitions'));
this.autoPlayAudioTimer = null;
this.optionsContext = {
depth: 0,
url: window.location.href
};
this._orphaned = false;
this._prepareInvoked = false;
this._messageToken = null;
this._messageTokenPromise = null;
yomichan.on('orphaned', () => this.onOrphaned());
window.addEventListener('message', (e) => this.onMessage(e), false);
}
async prepare(options, popupInfo, url, childrenSupported, scale, uniqueId) {
if (this._prepareInvoked) { return; }
this._prepareInvoked = true;
await super.prepare(options);
const {id, depth, parentFrameId} = popupInfo;
this.optionsContext.depth = depth;
this.optionsContext.url = url;
if (childrenSupported) {
popupNestedInitialize(id, depth, parentFrameId, url);
}
this.setContentScale(scale);
apiForward('popupPrepareCompleted', {uniqueId});
}
onError(error) {
if (this._orphaned) {
this.setContent('orphaned');
} else {
logError(error, true);
}
}
onOrphaned() {
this._orphaned = true;
}
onSearchClear() {
window.parent.postMessage('popupClose', '*');
}
onSelectionCopy() {
window.parent.postMessage('selectionCopy', '*');
}
onMessage(e) {
const data = e.data;
if (typeof data !== 'object' || data === null) { return; } // Invalid data
const token = data.token;
if (typeof token !== 'string') { return; } // Invalid data
if (this._messageToken === null) {
// Async
this.getMessageToken()
.then(
() => { this.handleAction(token, data); },
() => {}
);
} else {
// Sync
this.handleAction(token, data);
}
}
onKeyDown(e) {
const key = Display.getKeyFromEvent(e);
const handler = DisplayFloat._onKeyDownHandlers.get(key);
if (typeof handler === 'function') {
if (handler(this, e)) {
e.preventDefault();
return true;
}
}
return super.onKeyDown(e);
}
async getMessageToken() {
// this._messageTokenPromise is used to ensure that only one call to apiGetMessageToken is made.
if (this._messageTokenPromise === null) {
this._messageTokenPromise = apiGetMessageToken();
}
const messageToken = await this._messageTokenPromise;
if (this._messageToken === null) {
this._messageToken = messageToken;
}
this._messageTokenPromise = null;
}
handleAction(token, {action, params}) {
if (token !== this._messageToken) {
// Invalid token
return;
}
const handler = DisplayFloat._messageHandlers.get(action);
if (typeof handler !== 'function') { return; }
handler(this, params);
}
getOptionsContext() {
return this.optionsContext;
}
autoPlayAudio() {
this.clearAutoPlayTimer();
this.autoPlayAudioTimer = window.setTimeout(() => super.autoPlayAudio(), 400);
}
clearAutoPlayTimer() {
if (this.autoPlayAudioTimer) {
window.clearTimeout(this.autoPlayAudioTimer);
this.autoPlayAudioTimer = null;
}
}
setContentScale(scale) {
document.body.style.fontSize = `${scale}em`;
}
}
DisplayFloat._onKeyDownHandlers = new Map([
['C', (self, e) => {
if (e.ctrlKey && !window.getSelection().toString()) {
self.onSelectionCopy();
return true;
}
return false;
}]
]);
DisplayFloat._messageHandlers = new Map([
['setContent', (self, {type, details}) => self.setContent(type, details)],
['clearAutoPlayTimer', (self) => self.clearAutoPlayTimer()],
['setCustomCss', (self, {css}) => self.setCustomCss(css)],
['prepare', (self, {options, popupInfo, url, childrenSupported, scale, uniqueId}) => self.prepare(options, popupInfo, url, childrenSupported, scale, uniqueId)],
['setContentScale', (self, {scale}) => self.setContentScale(scale)]
]);
DisplayFloat.instance = new DisplayFloat();