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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
* FrontendApiReceiver
* Popup
* apiFrameInformationGet
*/
class PopupProxyHost {
constructor() {
this._popups = new Map();
this._apiReceiver = null;
this._frameId = null;
}
// Public functions
async prepare() {
const {frameId} = await apiFrameInformationGet();
if (typeof frameId !== 'number') { return; }
this._frameId = frameId;
this._apiReceiver = new FrontendApiReceiver(`popup-proxy-host#${this._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, depth=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 = yomichan.generateId(16);
}
// Create new popup
if (parent !== null) {
if (depth !== null) {
throw new Error('Depth cannot be set when parent exists');
}
depth = parent.depth + 1;
} else if (depth === null) {
depth = 0;
}
const popup = new Popup(id, depth, this._frameId);
if (parent !== null) {
popup.setParent(parent);
}
this._popups.set(id, popup);
return popup;
}
// API 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();
}
}
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