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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";
/* global browser, module, onMessageFromTab */
class AboutCompatBroker {
constructor(bindings) {
this.portsToAboutCompatTabs = this.buildPorts();
this._injections = bindings.injections;
this._injections.bindAboutCompatBroker(this);
this._uaOverrides = bindings.uaOverrides;
this._uaOverrides.bindAboutCompatBroker(this);
}
buildPorts() {
const ports = new Set();
browser.runtime.onConnect.addListener(port => {
ports.add(port);
port.onDisconnect.addListener(function() {
ports.delete(port);
});
});
async function broadcast(message) {
for (const port of ports) {
port.postMessage(message);
}
}
return { broadcast };
}
filterOverrides(overrides) {
return overrides
.filter(override => override.availableOnPlatform)
.map(override => {
const { id, active, bug, domain, hidden } = override;
return { id, active, bug, domain, hidden };
});
}
getOverrideOrInterventionById(id) {
for (const [type, things] of Object.entries({
overrides: this._uaOverrides.getAvailableOverrides(),
interventions: this._injections.getAvailableInjections(),
})) {
for (const what of things) {
if (what.id === id) {
return { type, what };
}
}
}
return {};
}
bootup() {
onMessageFromTab(msg => {
switch (msg.command || msg) {
case "toggle": {
const id = msg.id;
const { type, what } = this.getOverrideOrInterventionById(id);
if (!what) {
return Promise.reject(
`No such override or intervention to toggle: ${id}`
);
}
this.portsToAboutCompatTabs
.broadcast({ toggling: id, active: what.active })
.then(async () => {
switch (type) {
case "interventions": {
if (what.active) {
await this._injections.disableInjection(what);
} else {
await this._injections.enableInjection(what);
}
break;
}
case "overrides": {
if (what.active) {
await this._uaOverrides.disableOverride(what);
} else {
await this._uaOverrides.enableOverride(what);
}
break;
}
}
this.portsToAboutCompatTabs.broadcast({
toggled: id,
active: what.active,
});
});
break;
}
case "getOverridesAndInterventions": {
return Promise.resolve({
overrides:
(this._uaOverrides.isEnabled() &&
this.filterOverrides(
this._uaOverrides.getAvailableOverrides()
)) ||
false,
interventions:
(this._injections.isEnabled() &&
this.filterOverrides(
this._injections.getAvailableInjections()
)) ||
false,
});
}
}
return undefined;
});
}
}
module.exports = AboutCompatBroker;
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