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/*
* Copyright (C) 2016-2020 Yomichan Authors
*
* 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
* Display
* apiBroadcastTab
* apiGetMessageToken
* popupNestedInitialize
*/
class DisplayFloat extends Display {
constructor() {
super(document.querySelector('#spinner'), document.querySelector('#definitions'));
this.autoPlayAudioTimer = null;
this._popupId = null;
this._orphaned = false;
this._prepareInvoked = false;
this._messageToken = null;
this._messageTokenPromise = null;
this._onKeyDownHandlers = new Map([
['C', (e) => {
if (e.ctrlKey && !window.getSelection().toString()) {
this.onSelectionCopy();
return true;
}
return false;
}],
...this._onKeyDownHandlers
]);
this._windowMessageHandlers = new Map([
['setOptionsContext', ({optionsContext}) => this.setOptionsContext(optionsContext)],
['setContent', ({type, details}) => this.setContent(type, details)],
['clearAutoPlayTimer', () => this.clearAutoPlayTimer()],
['setCustomCss', ({css}) => this.setCustomCss(css)],
['prepare', ({popupInfo, optionsContext, childrenSupported, scale}) => this.prepare(popupInfo, optionsContext, childrenSupported, scale)],
['setContentScale', ({scale}) => this.setContentScale(scale)]
]);
yomichan.on('orphaned', this.onOrphaned.bind(this));
window.addEventListener('message', this.onMessage.bind(this), false);
}
async prepare(popupInfo, optionsContext, childrenSupported, scale) {
if (this._prepareInvoked) { return; }
this._prepareInvoked = true;
const {id, parentFrameId} = popupInfo;
this._popupId = id;
this.optionsContext = optionsContext;
await super.prepare();
await this.updateOptions();
if (childrenSupported) {
const {depth, url} = optionsContext;
popupNestedInitialize(id, depth, parentFrameId, url);
}
this.setContentScale(scale);
apiBroadcastTab('popupPrepareCompleted', {targetPopupId: this._popupId});
}
onError(error) {
if (this._orphaned) {
this.setContent('orphaned');
} else {
yomichan.logError(error);
}
}
onOrphaned() {
this._orphaned = true;
}
onEscape() {
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);
}
}
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 = this._windowMessageHandlers.get(action);
if (typeof handler !== 'function') { return; }
handler(params);
}
autoPlayAudio() {
this.clearAutoPlayTimer();
this.autoPlayAudioTimer = window.setTimeout(() => super.autoPlayAudio(), 400);
}
clearAutoPlayTimer() {
if (this.autoPlayAudioTimer) {
window.clearTimeout(this.autoPlayAudioTimer);
this.autoPlayAudioTimer = null;
}
}
async setOptionsContext(optionsContext) {
this.optionsContext = optionsContext;
await this.updateOptions();
}
setContentScale(scale) {
const body = document.body;
if (body === null) { return; }
body.style.fontSize = `${scale}em`;
}
async getDocumentTitle() {
try {
const uniqueId = yomichan.generateId(16);
const promise = yomichan.getTemporaryListenerResult(
chrome.runtime.onMessage,
({action, params}, {resolve}) => {
if (
action === 'documentInformationBroadcast' &&
isObject(params) &&
params.uniqueId === uniqueId &&
params.frameId === 0
) {
resolve(params);
}
},
2000
);
apiBroadcastTab('requestDocumentInformationBroadcast', {uniqueId});
const {title} = await promise;
return title;
} catch (e) {
return '';
}
}
}
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