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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";
var { Cc, Ci } = require("chrome");
loader.lazyGetter(this, "ppmm", () => {
return Cc["@mozilla.org/parentprocessmessagemanager;1"].getService(Ci.nsIMessageBroadcaster);
});
function ProcessActorList() {
this._actors = new Map();
this._onListChanged = null;
this._mustNotify = false;
this._onMessage = this._onMessage.bind(this);
this._processScript = "data:text/javascript,sendAsyncMessage('debug:new-process');";
}
ProcessActorList.prototype = {
getList: function () {
let processes = [];
for (let i = 0; i < ppmm.childCount; i++) {
processes.push({
id: i, // XXX: may not be a perfect id, but process message manager doesn't expose anything...
parent: i == 0, // XXX Weak, but appear to be stable
tabCount: undefined, // TODO: exposes process message manager on frameloaders in order to compute this
});
}
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: function () {
if (this._onListChanged !== null && this._mustNotify) {
this._knownProcesses = [];
for (let i = 0; i < ppmm.childCount; i++) {
this._knownProcesses.push(ppmm.getChildAt(i));
}
ppmm.addMessageListener("debug:new-process", this._onMessage);
ppmm.loadProcessScript(this._processScript, true);
} else {
ppmm.removeMessageListener("debug:new-process", this._onMessage);
ppmm.removeDelayedProcessScript(this._processScript);
}
},
_notifyListChanged: function () {
if (this._mustNotify) {
this._onListChanged();
this._mustNotify = false;
}
},
_onMessage: function ({ target }) {
if (this._knownProcesses.includes(target)) {
return;
}
this._notifyListChanged();
},
};
exports.ProcessActorList = ProcessActorList;
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