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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
* api
*/
class PopupProxy {
constructor(id, depth, parentPopupId, parentFrameId, getFrameOffset=null, setDisabled=null) {
this._id = id;
this._depth = depth;
this._parentPopupId = parentPopupId;
this._parentFrameId = parentFrameId;
this._getFrameOffset = getFrameOffset;
this._setDisabled = setDisabled;
this._frameOffset = null;
this._frameOffsetPromise = null;
this._frameOffsetUpdatedAt = null;
}
// Public properties
get id() {
return this._id;
}
get parent() {
return null;
}
get depth() {
return this._depth;
}
// Public functions
async prepare() {
const {id} = await this._invoke('getOrCreatePopup', {id: this._id, parentId: this._parentPopupId});
this._id = id;
}
isProxy() {
return true;
}
async setOptionsContext(optionsContext, source) {
return await this._invoke('setOptionsContext', {id: this._id, optionsContext, source});
}
hide(changeFocus) {
this._invoke('hide', {id: this._id, changeFocus});
}
async isVisible() {
return await this._invoke('isVisible', {id: this._id});
}
setVisibleOverride(visible) {
this._invoke('setVisibleOverride', {id: this._id, visible});
}
async containsPoint(x, y) {
if (this._getFrameOffset !== null) {
await this._updateFrameOffset();
[x, y] = this._applyFrameOffset(x, y);
}
return await this._invoke('containsPoint', {id: this._id, x, y});
}
async showContent(elementRect, writingMode, type, details, context) {
let {x, y, width, height} = elementRect;
if (this._getFrameOffset !== null) {
await this._updateFrameOffset();
[x, y] = this._applyFrameOffset(x, y);
}
elementRect = {x, y, width, height};
return await this._invoke('showContent', {id: this._id, elementRect, writingMode, type, details, context});
}
setCustomCss(css) {
this._invoke('setCustomCss', {id: this._id, css});
}
clearAutoPlayTimer() {
this._invoke('clearAutoPlayTimer', {id: this._id});
}
setContentScale(scale) {
this._invoke('setContentScale', {id: this._id, scale});
}
async getUrl() {
return await this._invoke('getUrl', {});
}
// Private
_invoke(action, params={}) {
return api.crossFrame.invoke(this._parentFrameId, action, params);
}
async _updateFrameOffset() {
const now = Date.now();
const firstRun = this._frameOffsetUpdatedAt === null;
const expired = firstRun || this._frameOffsetUpdatedAt < now - PopupProxy._frameOffsetExpireTimeout;
if (this._frameOffsetPromise === null && !expired) { return; }
if (this._frameOffsetPromise !== null) {
if (firstRun) {
await this._frameOffsetPromise;
}
return;
}
const promise = this._updateFrameOffsetInner(now);
if (firstRun) {
await promise;
}
}
async _updateFrameOffsetInner(now) {
this._frameOffsetPromise = this._getFrameOffset();
try {
const offset = await this._frameOffsetPromise;
this._frameOffset = offset !== null ? offset : [0, 0];
if (offset === null && this._setDisabled !== null) {
this._setDisabled();
return;
}
this._frameOffsetUpdatedAt = now;
} catch (e) {
yomichan.logError(e);
} finally {
this._frameOffsetPromise = null;
}
}
_applyFrameOffset(x, y) {
const [offsetX, offsetY] = this._frameOffset;
return [x + offsetX, y + offsetY];
}
}
PopupProxy._frameOffsetExpireTimeout = 1000;
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