84 lines
2.4 KiB
JavaScript
84 lines
2.4 KiB
JavaScript
/* This Source Code Form is subject to the terms of the Mozilla Public
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* License, v. 2.0. If a copy of the MPL was not distributed with this
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* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
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"use strict";
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var { Cc, Ci } = require("chrome");
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loader.lazyGetter(this, "ppmm", () => {
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return Cc["@mozilla.org/parentprocessmessagemanager;1"].getService(Ci.nsIMessageBroadcaster);
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});
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function ProcessActorList() {
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this._actors = new Map();
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this._onListChanged = null;
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this._mustNotify = false;
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this._onMessage = this._onMessage.bind(this);
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this._processScript = "data:text/javascript,sendAsyncMessage('debug:new-process');";
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}
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ProcessActorList.prototype = {
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getList: function () {
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let processes = [];
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for (let i = 0; i < ppmm.childCount; i++) {
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processes.push({
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id: i, // XXX: may not be a perfect id, but process message manager doesn't expose anything...
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parent: i == 0, // XXX Weak, but appear to be stable
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tabCount: undefined, // TODO: exposes process message manager on frameloaders in order to compute this
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});
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}
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this._mustNotify = true;
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this._checkListening();
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return processes;
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},
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get onListChanged() {
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return this._onListChanged;
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},
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set onListChanged(onListChanged) {
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if (typeof onListChanged !== "function" && onListChanged !== null) {
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throw new Error("onListChanged must be either a function or null.");
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}
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if (onListChanged === this._onListChanged) {
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return;
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}
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this._onListChanged = onListChanged;
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this._checkListening();
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},
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_checkListening: function () {
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if (this._onListChanged !== null && this._mustNotify) {
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this._knownProcesses = [];
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for (let i = 0; i < ppmm.childCount; i++) {
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this._knownProcesses.push(ppmm.getChildAt(i));
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}
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ppmm.addMessageListener("debug:new-process", this._onMessage);
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ppmm.loadProcessScript(this._processScript, true);
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} else {
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ppmm.removeMessageListener("debug:new-process", this._onMessage);
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ppmm.removeDelayedProcessScript(this._processScript);
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}
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},
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_notifyListChanged: function () {
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if (this._mustNotify) {
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this._onListChanged();
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this._mustNotify = false;
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}
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},
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_onMessage: function ({ target }) {
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if (this._knownProcesses.includes(target)) {
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return;
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}
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this._notifyListChanged();
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},
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};
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exports.ProcessActorList = ProcessActorList;
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