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/* This Source Code Form is subject to the terms of the Mozilla Public
* License, v. 2.0. If a copy of the MPL was not distributed with this
* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
"use strict";
/* globals browser, module */
/**
* Picture-in-Picture Overrides
*/
class PictureInPictureOverrides {
/**
* Class constructor
* @param {Object} availableOverrides Contains all overrides provided in data/picture_in_picture_overrides.js
*/
constructor(availableOverrides) {
this.pref = "enable_picture_in_picture_overrides";
this._prefEnabledOverrides = new Set();
this._availableOverrides = availableOverrides;
this.policies = browser.pictureInPictureChild.getPolicies();
}
/**
* Ensures the "enable_picture_in_picture_overrides" pref is set; if it is undefined, sets the pref to true
*/
async _checkGlobalPref() {
await browser.aboutConfigPipPrefs.getPref(this.pref).then(value => {
if (value === false) {
this._enabled = false;
} else {
if (value === undefined) {
browser.aboutConfigPipPrefs.setPref(this.pref, true);
}
this._enabled = true;
}
});
}
/**
* Checks the status of a specified override, and updates the set, `this._prefEnabledOverrides`, accordingly
* @param {String} id the id of the specific override contained in `this._availableOverrides`
* @param {String} pref the specific preference to check, in the form `disabled_picture_in_picture_overrides.${id}`
*/
async _checkSpecificOverridePref(id, pref) {
const isDisabled = await browser.aboutConfigPipPrefs.getPref(pref);
if (isDisabled === true) {
this._prefEnabledOverrides.delete(id);
} else {
this._prefEnabledOverrides.add(id);
}
}
/**
* The function that `run.js` calls to begin checking for changes to the PiP overrides
*/
bootup() {
const checkGlobal = async () => {
await this._checkGlobalPref();
this._onAvailableOverridesChanged();
};
browser.aboutConfigPipPrefs.onPrefChange.addListener(
checkGlobal,
this.pref
);
const bootupPrefCheckPromises = [this._checkGlobalPref()];
for (const id of Object.keys(this._availableOverrides)) {
const pref = `disabled_picture_in_picture_overrides.${id}`;
const checkSingle = async () => {
await this._checkSpecificOverridePref(id, pref);
this._onAvailableOverridesChanged();
};
browser.aboutConfigPipPrefs.onPrefChange.addListener(checkSingle, pref);
bootupPrefCheckPromises.push(this._checkSpecificOverridePref(id, pref));
}
Promise.all(bootupPrefCheckPromises).then(() => {
this._onAvailableOverridesChanged();
});
}
/**
* Sets pictureInPictureParent's overrides
*/
async _onAvailableOverridesChanged() {
const policies = await this.policies;
let enabledOverrides = {};
for (const [id, override] of Object.entries(this._availableOverrides)) {
const enabled = this._enabled && this._prefEnabledOverrides.has(id);
for (const [url, policy] of Object.entries(override)) {
enabledOverrides[url] = enabled ? policy : policies.DEFAULT;
}
}
browser.pictureInPictureParent.setOverrides(enabledOverrides);
}
}
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