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/*
* Copyright (C) 2019-2020 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
* Frontend
* Popup
* PopupFactory
* TextSourceRange
* api
*/
class PopupPreviewFrame {
constructor() {
this._frontend = null;
this._frontendGetOptionsContextOld = null;
this._apiOptionsGetOld = null;
this._popup = null;
this._popupSetCustomOuterCssOld = null;
this._popupShown = false;
this._themeChangeTimeout = null;
this._textSource = null;
this._optionsContext = null;
this._targetOrigin = chrome.runtime.getURL('/').replace(/\/$/, '');
this._windowMessageHandlers = new Map([
['setText', this._setText.bind(this)],
['setCustomCss', this._setCustomCss.bind(this)],
['setCustomOuterCss', this._setCustomOuterCss.bind(this)],
['updateOptionsContext', this._updateOptionsContext.bind(this)]
]);
}
async prepare() {
window.addEventListener('message', this._onMessage.bind(this), false);
// Setup events
document.querySelector('#theme-dark-checkbox').addEventListener('change', this._onThemeDarkCheckboxChanged.bind(this), false);
// Overwrite API functions
this._apiOptionsGetOld = api.optionsGet.bind(api);
api.optionsGet = this._apiOptionsGet.bind(this);
// Overwrite frontend
const {frameId} = await api.frameInformationGet();
const popupFactory = new PopupFactory(frameId);
await popupFactory.prepare();
this._popup = popupFactory.getOrCreatePopup();
this._popup.setChildrenSupported(false);
this._popupSetCustomOuterCssOld = this._popup.setCustomOuterCss.bind(this._popup);
this._popup.setCustomOuterCss = this._popupSetCustomOuterCss.bind(this);
this._frontend = new Frontend(this._popup);
this._frontendGetOptionsContextOld = this._frontend.getOptionsContext.bind(this._frontend);
this._frontend.getOptionsContext = this._getOptionsContext.bind(this);
await this._frontend.prepare();
this._frontend.setDisabledOverride(true);
this._frontend.canClearSelection = false;
// Update search
this._updateSearch();
}
// Private
async _getOptionsContext() {
let optionsContext = this._optionsContext;
if (optionsContext === null) {
optionsContext = this._frontendGetOptionsContextOld();
}
return optionsContext;
}
async _apiOptionsGet(...args) {
const options = await this._apiOptionsGetOld(...args);
options.general.enable = true;
options.general.debugInfo = false;
options.general.popupWidth = 400;
options.general.popupHeight = 250;
options.general.popupHorizontalOffset = 0;
options.general.popupVerticalOffset = 10;
options.general.popupHorizontalOffset2 = 10;
options.general.popupVerticalOffset2 = 0;
options.general.popupHorizontalTextPosition = 'below';
options.general.popupVerticalTextPosition = 'before';
options.scanning.selectText = false;
return options;
}
async _popupSetCustomOuterCss(...args) {
// This simulates the stylesheet priorities when injecting using the web extension API.
const result = await this._popupSetCustomOuterCssOld(...args);
const node = document.querySelector('#client-css');
if (node !== null && result !== null) {
node.parentNode.insertBefore(result, node);
}
return result;
}
_onMessage(e) {
if (e.origin !== this._targetOrigin) { return; }
const {action, params} = e.data;
const handler = this._windowMessageHandlers.get(action);
if (typeof handler !== 'function') { return; }
handler(params);
}
_onThemeDarkCheckboxChanged(e) {
document.documentElement.classList.toggle('dark', e.target.checked);
if (this._themeChangeTimeout !== null) {
clearTimeout(this._themeChangeTimeout);
}
this._themeChangeTimeout = setTimeout(() => {
this._themeChangeTimeout = null;
this._popup.updateTheme();
}, 300);
}
_setText({text}) {
const exampleText = document.querySelector('#example-text');
if (exampleText === null) { return; }
exampleText.textContent = text;
this._updateSearch();
}
_setInfoVisible(visible) {
const node = document.querySelector('.placeholder-info');
if (node === null) { return; }
node.classList.toggle('placeholder-info-visible', visible);
}
_setCustomCss({css}) {
if (this._frontend === null) { return; }
this._popup.setCustomCss(css);
}
_setCustomOuterCss({css}) {
if (this._frontend === null) { return; }
this._popup.setCustomOuterCss(css, false);
}
async _updateOptionsContext({optionsContext}) {
this._optionsContext = optionsContext;
await this._frontend.updateOptions();
await this._updateSearch();
}
async _updateSearch() {
const exampleText = document.querySelector('#example-text');
if (exampleText === null) { return; }
const textNode = exampleText.firstChild;
if (textNode === null) { return; }
const range = document.createRange();
range.selectNode(textNode);
const source = new TextSourceRange(range, range.toString(), null, null);
try {
await this._frontend.setTextSource(source);
} finally {
source.cleanup();
}
this._textSource = source;
await this._frontend.showContentCompleted();
if (this._popup.isVisibleSync()) {
this._popupShown = true;
}
this._setInfoVisible(!this._popupShown);
}
}
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