/* * 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', this._onApiGetOrCreatePopup.bind(this)], ['setOptions', this._onApiSetOptions.bind(this)], ['hide', this._onApiHide.bind(this)], ['isVisible', this._onApiIsVisibleAsync.bind(this)], ['setVisibleOverride', this._onApiSetVisibleOverride.bind(this)], ['containsPoint', this._onApiContainsPoint.bind(this)], ['showContent', this._onApiShowContent.bind(this)], ['setCustomCss', this._onApiSetCustomCss.bind(this)], ['clearAutoPlayTimer', this._onApiClearAutoPlayTimer.bind(this)], ['setContentScale', this._onApiSetContentScale.bind(this)] ])); } 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); [x, y] = PopupProxyHost._convertPopupPointToRootPagePoint(popup, x, y); 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) { const [x, y] = PopupProxyHost._convertPopupPointToRootPagePoint(popup, jsonRect.x, jsonRect.y); return new DOMRect(x, y, jsonRect.width, jsonRect.height); } static _convertPopupPointToRootPagePoint(popup, x, y) { if (popup.parent !== null) { const popupRect = popup.parent.getContainerRect(); x += popupRect.x; y += popupRect.y; } return [x, y]; } static _popupCanShow(popup) { return popup.parent === null || popup.parent.isVisibleSync(); } }