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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
* FrameEndpoint
* api
*/
class DisplayFloat extends Display {
constructor() {
super('popup');
this._frameEndpoint = new FrameEndpoint();
this._windowMessageHandlers = new Map([
['extensionUnloaded', {async: false, handler: this._onMessageExtensionUnloaded.bind(this)}]
]);
this._browser = null;
this._copyTextarea = null;
this.registerActions([
['copyHostSelection', () => this._copySelection()]
]);
this.registerHotkeys([
{key: 'C', modifiers: ['ctrl'], action: 'copyHostSelection'}
]);
this.autoPlayAudioDelay = 400;
}
async prepare() {
await super.prepare();
const {browser} = await api.getEnvironmentInfo();
this._browser = browser;
window.addEventListener('message', this._onWindowMessage.bind(this), false);
document.documentElement.addEventListener('mouseup', this._onMouseUp.bind(this), false);
document.documentElement.addEventListener('click', this._onClick.bind(this), false);
document.documentElement.addEventListener('auxclick', this._onClick.bind(this), false);
this.initializeState();
this._frameEndpoint.signal();
}
onEscape() {
this.close();
}
async getDocumentTitle() {
try {
const targetFrameId = 0;
const {title} = await api.crossFrame.invoke(targetFrameId, 'getDocumentInformation');
return title;
} catch (e) {
return '';
}
}
authenticateMessageData(data) {
if (!this._frameEndpoint.authenticate(data)) {
throw new Error('Invalid authentication');
}
return data.data;
}
close() {
this._invokeOwner('closePopup');
}
// Message handling
_onWindowMessage(e) {
const data = e.data;
if (!this._frameEndpoint.authenticate(data)) { return; }
const {action, params} = data.data;
const messageHandler = this._windowMessageHandlers.get(action);
if (typeof messageHandler === 'undefined') { return; }
const callback = () => {}; // NOP
yomichan.invokeMessageHandler(messageHandler, params, callback);
}
_onMessageExtensionUnloaded() {
if (yomichan.isExtensionUnloaded) { return; }
yomichan.triggerExtensionUnloaded();
}
// Private
_onMouseUp(e) {
switch (e.button) {
case 3: // Back
if (this._history.hasPrevious()) {
e.preventDefault();
}
break;
case 4: // Forward
if (this._history.hasNext()) {
e.preventDefault();
}
break;
}
}
_onClick(e) {
switch (e.button) {
case 3: // Back
if (this._history.hasPrevious()) {
e.preventDefault();
this._history.back();
}
break;
case 4: // Forward
if (this._history.hasNext()) {
e.preventDefault();
this._history.forward();
}
break;
}
}
_copySelection() {
if (window.getSelection().toString()) { return false; }
this._copyHostSelection();
return true;
}
async _copyHostSelection() {
switch (this._browser) {
case 'firefox':
case 'firefox-mobile':
{
let text;
try {
text = await this._invokeOwner('getSelectionText');
} catch (e) {
break;
}
this._copyText(text);
}
break;
default:
this._invokeOwner('copySelection');
break;
}
}
_copyText(text) {
const parent = document.body;
if (parent === null) { return; }
let textarea = this._copyTextarea;
if (textarea === null) {
textarea = document.createElement('textarea');
this._copyTextarea = textarea;
}
textarea.value = text;
parent.appendChild(textarea);
textarea.select();
document.execCommand('copy');
parent.removeChild(textarea);
}
_invokeOwner(action, params={}) {
return api.crossFrame.invoke(this.ownerFrameId, action, params);
}
}
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