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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";
loader.lazyGetter(this, "ppmm", () => {
return Cc["@mozilla.org/parentprocessmessagemanager;1"].getService();
});
class ProcessActorList {
constructor() {
this._actors = new Map();
this._onListChanged = null;
this._mustNotify = false;
this._hasObserver = false;
}
getList() {
const processes = [];
for (let i = 0; i < ppmm.childCount; i++) {
const mm = ppmm.getChildAt(i);
processes.push({
// An ID of zero is always used for the parent. It would be nice to fix
// this so that the pid is also used for the parent, see bug 1587443.
id: mm.isInProcess ? 0 : mm.osPid,
parent: mm.isInProcess,
// TODO: exposes process message manager on frameloaders in order to compute this
tabCount: undefined,
});
}
this._mustNotify = true;
this._checkListening();
return processes;
}
get onListChanged() {
return this._onListChanged;
}
set onListChanged(onListChanged) {
if (typeof onListChanged !== "function" && onListChanged !== null) {
throw new Error("onListChanged must be either a function or null.");
}
if (onListChanged === this._onListChanged) {
return;
}
this._onListChanged = onListChanged;
this._checkListening();
}
_checkListening() {
if (this._onListChanged !== null && this._mustNotify) {
if (!this._hasObserver) {
Services.obs.addObserver(this, "ipc:content-created");
Services.obs.addObserver(this, "ipc:content-shutdown");
this._hasObserver = true;
}
} else if (this._hasObserver) {
Services.obs.removeObserver(this, "ipc:content-created");
Services.obs.removeObserver(this, "ipc:content-shutdown");
this._hasObserver = false;
}
}
observe() {
if (this._mustNotify) {
this._onListChanged();
this._mustNotify = false;
}
}
}
exports.ProcessActorList = ProcessActorList;
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