yomichan/ext/js/app/popup-window.js

286 lines
8.6 KiB
JavaScript
Raw Normal View History

/*
* Copyright (C) 2020-2022 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/>.
*/
/**
* This class represents a popup that is hosted in a new native window.
*/
class PopupWindow extends EventDispatcher {
/**
* Creates a new instance.
* @param {object} details
* @param {string} details.id The ID of the popup.
* @param {number} details.depth The depth of the popup.
* @param {number} details.frameId The ID of the host frame.
*/
constructor({
id,
depth,
frameId
}) {
super();
this._id = id;
this._depth = depth;
this._frameId = frameId;
this._popupTabId = null;
}
/**
* The ID of the popup.
* @type {string}
*/
get id() {
return this._id;
}
get parent() {
return null;
}
/**
* The parent of the popup, which is always `null` for `PopupWindow` instances,
* since any potential parent popups are in a different frame.
* @param {Popup} value
* @type {Popup}
*/
set parent(value) {
throw new Error('Not supported on PopupWindow');
}
/**
* The popup child popup, which is always null for `PopupWindow` instances,
* since any potential child popups are in a different frame.
* @type {Popup}
*/
get child() {
return null;
}
/**
* Attempts to set the child popup.
* @param {Popup} value
* @throws Throws an error, since this class doesn't support children.
*/
set child(value) {
throw new Error('Not supported on PopupWindow');
}
/**
* The depth of the popup.
* @type {numer}
*/
get depth() {
return this._depth;
}
/**
* Gets the content window of the frame. This value is null,
* since the window is hosted in a different frame.
* @type {Window}
*/
get frameContentWindow() {
return null;
}
/**
* Gets the DOM node that contains the frame.
* @type {Element}
*/
get container() {
return null;
}
/**
* Gets the ID of the frame.
* @type {number}
*/
get frameId() {
return this._frameId;
}
/**
* Sets the options context for the popup.
* @param {object} optionsContext The options context object.
* @returns {Promise<void>}
*/
setOptionsContext(optionsContext) {
return this._invoke(false, 'Display.setOptionsContext', {id: this._id, optionsContext});
}
/**
* Hides the popup. This does nothing for `PopupWindow`.
* @param {boolean} _changeFocus Whether or not the parent popup or host frame should be focused.
*/
hide(_changeFocus) {
// NOP
}
/**
* Returns whether or not the popup is currently visible.
* @returns {Promise<boolean>} `true` if the popup is visible, `false` otherwise.
*/
async isVisible() {
return (this._popupTabId !== null && await yomichan.api.isTabSearchPopup(this._popupTabId));
}
/**
* Force assigns the visibility of the popup.
* @param {boolean} _value Whether or not the popup should be visible.
* @param {number} _priority The priority of the override.
* @returns {Promise<string?>} A token used which can be passed to `clearVisibleOverride`,
* or null if the override wasn't assigned.
*/
async setVisibleOverride(_value, _priority) {
return null;
}
/**
* Clears a visibility override that was generated by `setVisibleOverride`.
* @param {string} _token The token returned from `setVisibleOverride`.
* @returns {boolean} `true` if the override existed and was removed, `false` otherwise.
*/
clearVisibleOverride(_token) {
return false;
}
/**
* Checks whether a point is contained within the popup's rect.
* @param {number} _x The x coordinate.
* @param {number} _y The y coordinate.
* @returns {Promise<boolean>} `true` if the point is contained within the popup's rect, `false` otherwise.
*/
async containsPoint(_x, _y) {
return false;
}
/**
* Shows and updates the positioning and content of the popup.
* @param {{optionsContext: object, elementRect: {x: number, y: number, width: number, height: number}, writingMode: string}} details Settings for the outer popup.
* @param {object} displayDetails The details parameter passed to `Display.setContent`; see that function for details.
* @returns {Promise<void>}
*/
async showContent(_details, displayDetails) {
if (displayDetails === null) { return; }
await this._invoke(true, 'Display.setContent', {id: this._id, details: displayDetails});
}
/**
* Sets the custom styles for the popup content.
* @param {string} css The CSS rules.
*/
setCustomCss(css) {
return this._invoke(false, 'Display.setCustomCss', {id: this._id, css});
}
/**
* Stops the audio auto-play timer, if one has started.
*/
clearAutoPlayTimer() {
return this._invoke(false, 'Display.clearAutoPlayTimer', {id: this._id});
}
/**
* Sets the scaling factor of the popup content.
* @param {number} scale The scaling factor.
*/
setContentScale(_scale) {
// NOP
}
/**
* Returns whether or not the popup is currently visible, synchronously.
* @returns {boolean} `true` if the popup is visible, `false` otherwise.
* @throws An exception is thrown for `PopupWindow` since it cannot synchronously detect visibility.
*/
isVisibleSync() {
throw new Error('Not supported on PopupWindow');
}
/**
* Updates the outer theme of the popup.
*/
async updateTheme() {
// NOP
}
/**
* Sets the custom styles for the outer popup container.
* This does nothing for `PopupWindow`.
* @param {string} _css The CSS rules.
* @param {boolean} _useWebExtensionApi Whether or not web extension APIs should be used to inject the rules.
* When web extension APIs are used, a DOM node is not generated, making it harder to detect the changes.
*/
async setCustomOuterCss(_css, _useWebExtensionApi) {
// NOP
}
/**
* Gets the rectangle of the DOM frame, synchronously.
* @returns {{x: number, y: number, width: number, height: number, valid: boolean}} The rect.
* `valid` is `false` for `PopupProxy`, since the DOM node is hosted in a different frame.
*/
getFrameRect() {
return {x: 0, y: 0, width: 0, height: 0, valid: false};
}
/**
* Gets the size of the DOM frame.
* @returns {Promise<{width: number, height: number, valid: boolean}>} The size and whether or not it is valid.
*/
async getFrameSize() {
return {width: 0, height: 0, valid: false};
}
/**
* Sets the size of the DOM frame.
* @param {number} _width The desired width of the popup.
* @param {number} _height The desired height of the popup.
* @returns {Promise<boolean>} `true` if the size assignment was successful, `false` otherwise.
*/
async setFrameSize(_width, _height) {
return false;
}
// Private
async _invoke(open, action, params={}, defaultReturnValue) {
if (yomichan.isExtensionUnloaded) {
return defaultReturnValue;
}
const frameId = 0;
if (this._popupTabId !== null) {
try {
return await yomichan.crossFrame.invokeTab(this._popupTabId, frameId, 'popupMessage', {action, params});
} catch (e) {
if (yomichan.isExtensionUnloaded) {
open = false;
}
}
this._popupTabId = null;
}
if (!open) {
return defaultReturnValue;
}
const {tabId} = await yomichan.api.getOrCreateSearchPopup({focus: 'ifCreated'});
this._popupTabId = tabId;
return await yomichan.crossFrame.invokeTab(this._popupTabId, frameId, 'popupMessage', {action, params});
}
}