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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(document.querySelector('#spinner'), document.querySelector('#definitions'));
this._nestedPopupsPrepared = false;
this._ownerFrameId = null;
this._frameEndpoint = new FrameEndpoint();
this._windowMessageHandlers = new Map([
['extensionUnloaded', {async: false, handler: this._onMessageExtensionUnloaded.bind(this)}]
]);
this.registerActions([
['copyHostSelection', () => this._copySelection()]
]);
this.registerHotkeys([
{key: 'C', modifiers: ['ctrl'], action: 'copyHostSelection'}
]);
this.autoPlayAudioDelay = 400;
}
async prepare() {
await super.prepare();
this.registerDirectMessageHandlers([
['configure', {async: true, handler: this._onMessageConfigure.bind(this)}],
['setContentScale', {async: false, handler: this._onMessageSetContentScale.bind(this)}]
]);
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._invoke('closePopup');
}
async setOptionsContext(optionsContext) {
super.setOptionsContext(optionsContext);
await this.updateOptions();
}
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;
}
// 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);
}
async _onMessageConfigure({frameId, ownerFrameId, popupId, optionsContext, childrenSupported, scale}) {
this._ownerFrameId = ownerFrameId;
this.setOptionsContext(optionsContext);
await this.updateOptions();
if (childrenSupported && !this._nestedPopupsPrepared) {
const {depth, url} = optionsContext;
this._prepareNestedPopups(popupId, depth, frameId, url);
this._nestedPopupsPrepared = true;
}
this._setContentScale(scale);
}
_onMessageSetContentScale({scale}) {
this._setContentScale(scale);
}
_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._invoke('copySelection');
return true;
}
_setContentScale(scale) {
const body = document.body;
if (body === null) { return; }
body.style.fontSize = `${scale}em`;
}
async _prepareNestedPopups(id, depth, parentFrameId, url) {
let complete = false;
const onOptionsUpdated = async () => {
const optionsContext = this.getOptionsContext();
const options = await api.optionsGet(optionsContext);
const maxPopupDepthExceeded = !(typeof depth === 'number' && depth < options.scanning.popupNestingMaxDepth);
if (maxPopupDepthExceeded || complete) { return; }
complete = true;
yomichan.off('optionsUpdated', onOptionsUpdated);
try {
await this.setupNestedPopups({
id,
depth,
parentFrameId,
url,
proxy: true
});
} catch (e) {
yomichan.logError(e);
}
};
yomichan.on('optionsUpdated', onOptionsUpdated);
await onOptionsUpdated();
}
_invoke(action, params={}) {
return api.crossFrame.invoke(this._ownerFrameId, action, params);
}
}
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