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/*
* Copyright (C) 2019-2020 Alex Yatskov <alex@foosoft.net>
* Author: Alex Yatskov <alex@foosoft.net>
*
* 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 apiFrameInformationGet, FrontendApiReceiver, Popup*/
class PopupProxyHost {
constructor() {
this._popups = new Map();
this._nextId = 0;
this._apiReceiver = null;
this._frameIdPromise = null;
}
// Public functions
async prepare() {
this._frameIdPromise = apiFrameInformationGet();
const {frameId} = await this._frameIdPromise;
if (typeof frameId !== 'number') { return; }
this._apiReceiver = new FrontendApiReceiver(`popup-proxy-host#${frameId}`, new Map([
['getOrCreatePopup', ({id, parentId}) => this._onApiGetOrCreatePopup(id, parentId)],
['setOptions', ({id, options}) => this._onApiSetOptions(id, options)],
['hide', ({id, changeFocus}) => this._onApiHide(id, changeFocus)],
['isVisible', ({id}) => this._onApiIsVisibleAsync(id)],
['setVisibleOverride', ({id, visible}) => this._onApiSetVisibleOverride(id, visible)],
['containsPoint', ({id, x, y}) => this._onApiContainsPoint(id, x, y)],
['showContent', ({id, elementRect, writingMode, type, details}) => this._onApiShowContent(id, elementRect, writingMode, type, details)],
['setCustomCss', ({id, css}) => this._onApiSetCustomCss(id, css)],
['clearAutoPlayTimer', ({id}) => this._onApiClearAutoPlayTimer(id)],
['setContentScale', ({id, scale}) => this._onApiSetContentScale(id, scale)]
]));
}
getOrCreatePopup(id=null, parentId=null) {
// Find by existing id
if (id !== null) {
const popup = this._popups.get(id);
if (typeof popup !== 'undefined') {
return popup;
}
}
// Find by existing parent id
let parent = null;
if (parentId !== null) {
parent = this._popups.get(parentId);
if (typeof parent !== 'undefined') {
const popup = parent.child;
if (popup !== null) {
return popup;
}
} else {
parent = null;
}
}
// New unique id
if (id === null) {
id = this._nextId++;
}
// Create new popup
const depth = (parent !== null ? parent.depth + 1 : 0);
const popup = new Popup(id, depth, this._frameIdPromise);
if (parent !== null) {
popup.setParent(parent);
}
this._popups.set(id, popup);
return popup;
}
// Message handlers
async _onApiGetOrCreatePopup(id, parentId) {
const popup = this.getOrCreatePopup(id, parentId);
return {
id: popup.id
};
}
async _onApiSetOptions(id, options) {
const popup = this._getPopup(id);
return await popup.setOptions(options);
}
async _onApiHide(id, changeFocus) {
const popup = this._getPopup(id);
return popup.hide(changeFocus);
}
async _onApiIsVisibleAsync(id) {
const popup = this._getPopup(id);
return await popup.isVisible();
}
async _onApiSetVisibleOverride(id, visible) {
const popup = this._getPopup(id);
return await popup.setVisibleOverride(visible);
}
async _onApiContainsPoint(id, x, y) {
const popup = this._getPopup(id);
return await popup.containsPoint(x, y);
}
async _onApiShowContent(id, elementRect, writingMode, type, details) {
const popup = this._getPopup(id);
elementRect = PopupProxyHost._convertJsonRectToDOMRect(popup, elementRect);
if (!PopupProxyHost._popupCanShow(popup)) { return; }
return await popup.showContent(elementRect, writingMode, type, details);
}
async _onApiSetCustomCss(id, css) {
const popup = this._getPopup(id);
return popup.setCustomCss(css);
}
async _onApiClearAutoPlayTimer(id) {
const popup = this._getPopup(id);
return popup.clearAutoPlayTimer();
}
async _onApiSetContentScale(id, scale) {
const popup = this._getPopup(id);
return popup.setContentScale(scale);
}
// Private functions
_getPopup(id) {
const popup = this._popups.get(id);
if (typeof popup === 'undefined') {
throw new Error(`Invalid popup ID ${id}`);
}
return popup;
}
static _convertJsonRectToDOMRect(popup, jsonRect) {
let x = jsonRect.x;
let y = jsonRect.y;
if (popup.parent !== null) {
const popupRect = popup.parent.getContainerRect();
x += popupRect.x;
y += popupRect.y;
}
return new DOMRect(x, y, jsonRect.width, jsonRect.height);
}
static _popupCanShow(popup) {
return popup.parent === null || popup.parent.isVisibleSync();
}
}
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