yomichan/ext/fg/js/popup-factory.js

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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
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* along with this program. If not, see <https://www.gnu.org/licenses/>.
*/
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/* global
* Popup
* api
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*/
class PopupFactory {
constructor(frameId) {
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this._popups = new Map();
this._frameId = frameId;
}
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// Public functions
prepare() {
api.crossFrame.registerHandlers([
['getOrCreatePopup', {async: false, handler: this._onApiGetOrCreatePopup.bind(this)}],
['setOptionsContext', {async: true, handler: this._onApiSetOptionsContext.bind(this)}],
['hide', {async: false, handler: this._onApiHide.bind(this)}],
['isVisible', {async: true, handler: this._onApiIsVisibleAsync.bind(this)}],
['setVisibleOverride', {async: true, handler: this._onApiSetVisibleOverride.bind(this)}],
['containsPoint', {async: true, handler: this._onApiContainsPoint.bind(this)}],
['showContent', {async: true, handler: this._onApiShowContent.bind(this)}],
['setCustomCss', {async: false, handler: this._onApiSetCustomCss.bind(this)}],
['clearAutoPlayTimer', {async: false, handler: this._onApiClearAutoPlayTimer.bind(this)}],
['setContentScale', {async: false, handler: this._onApiSetContentScale.bind(this)}]
]);
}
getOrCreatePopup({id=null, parentId=null, ownerFrameId=null, depth=null}) {
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// 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) {
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id = yomichan.generateId(16);
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}
// 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, ownerFrameId);
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if (parent !== null) {
popup.setParent(parent);
}
this._popups.set(id, popup);
popup.prepare();
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return popup;
}
// API message handlers
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_onApiGetOrCreatePopup({id, parentId, ownerFrameId}) {
const popup = this.getOrCreatePopup({id, parentId, ownerFrameId});
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return {
id: popup.id
};
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}
async _onApiSetOptionsContext({id, optionsContext, source}) {
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const popup = this._getPopup(id);
return await popup.setOptionsContext(optionsContext, source);
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}
_onApiHide({id, changeFocus}) {
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const popup = this._getPopup(id);
return popup.hide(changeFocus);
}
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async _onApiIsVisibleAsync({id}) {
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const popup = this._getPopup(id);
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return await popup.isVisible();
}
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async _onApiSetVisibleOverride({id, visible}) {
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const popup = this._getPopup(id);
return await popup.setVisibleOverride(visible);
}
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async _onApiContainsPoint({id, x, y}) {
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const popup = this._getPopup(id);
[x, y] = this._convertPopupPointToRootPagePoint(popup, x, y);
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return await popup.containsPoint(x, y);
}
async _onApiShowContent({id, elementRect, writingMode, type, details, context}) {
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const popup = this._getPopup(id);
elementRect = this._convertJsonRectToDOMRect(popup, elementRect);
if (!this._popupCanShow(popup)) { return; }
return await popup.showContent(elementRect, writingMode, type, details, context);
}
_onApiSetCustomCss({id, css}) {
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const popup = this._getPopup(id);
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return popup.setCustomCss(css);
}
_onApiClearAutoPlayTimer({id}) {
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const popup = this._getPopup(id);
return popup.clearAutoPlayTimer();
}
_onApiSetContentScale({id, scale}) {
const popup = this._getPopup(id);
return popup.setContentScale(scale);
}
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// Private functions
_getPopup(id) {
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const popup = this._popups.get(id);
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if (typeof popup === 'undefined') {
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throw new Error(`Invalid popup ID ${id}`);
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}
return popup;
}
_convertJsonRectToDOMRect(popup, jsonRect) {
const [x, y] = this._convertPopupPointToRootPagePoint(popup, jsonRect.x, jsonRect.y);
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return new DOMRect(x, y, jsonRect.width, jsonRect.height);
}
_convertPopupPointToRootPagePoint(popup, x, y) {
if (popup.parent !== null) {
const popupRect = popup.parent.getFrameRect();
x += popupRect.x;
y += popupRect.y;
}
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return [x, y];
}
_popupCanShow(popup) {
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return popup.parent === null || popup.parent.isVisibleSync();
}
}