yomichan/ext/fg/js/float.js

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/*
* Copyright (C) 2016-2020 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
* Display
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* apiBroadcastTab
* apiSendMessageToFrame
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* popupNestedInitialize
*/
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class DisplayFloat extends Display {
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constructor() {
super(document.querySelector('#spinner'), document.querySelector('#definitions'));
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this.autoPlayAudioTimer = null;
this._secret = yomichan.generateId(16);
this._token = null;
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this._orphaned = false;
this._initializedNestedPopups = false;
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this._onKeyDownHandlers = new Map([
['C', (e) => {
if (e.ctrlKey && !window.getSelection().toString()) {
this.onSelectionCopy();
return true;
}
return false;
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}],
...this._onKeyDownHandlers
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]);
this._windowMessageHandlers = new Map([
['initialize', {handler: this._initialize.bind(this), authenticate: false}],
['configure', {handler: this._configure.bind(this)}],
['setOptionsContext', {handler: ({optionsContext}) => this.setOptionsContext(optionsContext)}],
['setContent', {handler: ({type, details}) => this.setContent(type, details)}],
['clearAutoPlayTimer', {handler: () => this.clearAutoPlayTimer()}],
['setCustomCss', {handler: ({css}) => this.setCustomCss(css)}],
['setContentScale', {handler: ({scale}) => this.setContentScale(scale)}]
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]);
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}
async prepare() {
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await super.prepare();
yomichan.on('orphaned', this.onOrphaned.bind(this));
window.addEventListener('message', this.onMessage.bind(this), false);
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apiBroadcastTab('popupPrepared', {secret: this._secret});
}
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onError(error) {
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if (this._orphaned) {
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this.setContent('orphaned');
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} else {
yomichan.logError(error);
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}
}
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onOrphaned() {
this._orphaned = true;
}
onEscape() {
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window.parent.postMessage('popupClose', '*');
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}
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onSelectionCopy() {
window.parent.postMessage('selectionCopy', '*');
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}
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onMessage(e) {
const data = e.data;
if (typeof data !== 'object' || data === null) {
this._logMessageError(e, 'Invalid data');
return;
}
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const action = data.action;
if (typeof action !== 'string') {
this._logMessageError(e, 'Invalid data');
return;
}
const handlerInfo = this._windowMessageHandlers.get(action);
if (typeof handlerInfo === 'undefined') {
this._logMessageError(e, `Invalid action: ${JSON.stringify(action)}`);
return;
}
if (handlerInfo.authenticate !== false && !this._isMessageAuthenticated(data)) {
this._logMessageError(e, 'Invalid authentication');
return;
}
const handler = handlerInfo.handler;
handler(data.params);
}
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autoPlayAudio() {
this.clearAutoPlayTimer();
this.autoPlayAudioTimer = window.setTimeout(() => super.autoPlayAudio(), 400);
}
clearAutoPlayTimer() {
if (this.autoPlayAudioTimer) {
window.clearTimeout(this.autoPlayAudioTimer);
this.autoPlayAudioTimer = null;
}
}
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async setOptionsContext(optionsContext) {
this.optionsContext = optionsContext;
await this.updateOptions();
}
setContentScale(scale) {
const body = document.body;
if (body === null) { return; }
body.style.fontSize = `${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
);
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apiBroadcastTab('requestDocumentInformationBroadcast', {uniqueId});
const {title} = await promise;
return title;
} catch (e) {
return '';
}
}
_logMessageError(event, type) {
yomichan.logWarning(new Error(`Popup received invalid message from origin ${JSON.stringify(event.origin)}: ${type}`));
}
_initialize(params) {
if (this._token !== null) { return; } // Already initialized
if (!isObject(params)) { return; } // Invalid data
const secret = params.secret;
if (secret !== this._secret) { return; } // Invalid authentication
const {token, frameId} = params;
this._token = token;
apiSendMessageToFrame(frameId, 'popupInitialized', {secret, token});
}
async _configure({messageId, frameId, popupId, optionsContext, childrenSupported, scale}) {
this.optionsContext = optionsContext;
await this.updateOptions();
if (childrenSupported && !this._initializedNestedPopups) {
const {depth, url} = optionsContext;
popupNestedInitialize(popupId, depth, frameId, url);
this._initializedNestedPopups = true;
}
this.setContentScale(scale);
apiSendMessageToFrame(frameId, 'popupConfigured', {messageId});
}
_isMessageAuthenticated(message) {
return (
this._token !== null &&
this._token === message.token &&
this._secret === message.secret
);
}
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}