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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 file,
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* You can obtain one at http://mozilla.org/MPL/2.0/. */
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"use strict";
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const Ci = Components.interfaces;
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const Cu = Components.utils;
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Cu.import("resource://gre/modules/XPCOMUtils.jsm");
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Cu.import("resource://gre/modules/Services.jsm");
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XPCOMUtils.defineLazyServiceGetter(this, "cpmm",
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"@mozilla.org/childprocessmessagemanager;1",
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"nsISyncMessageSender");
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function debug(aMsg) {
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// dump("-- SystemMessageCache " + Date.now() + " : " + aMsg + "\n");
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}
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const kMessages = ["SystemMessageCache:RefreshCache"];
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function SystemMessageCache() {
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debug("init");
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this._pagesCache = [];
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Services.obs.addObserver(this, "xpcom-shutdown", false);
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kMessages.forEach(function(aMessage) {
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cpmm.addMessageListener(aMessage, this);
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}, this);
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}
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SystemMessageCache.prototype = {
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observe: function(aSubject, aTopic, aData) {
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switch (aTopic) {
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case "xpcom-shutdown":
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debug("received xpcom-shutdown");
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kMessages.forEach(function(aMessage) {
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cpmm.removeMessageListener(aMessage, this);
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}, this);
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Services.obs.removeObserver(this, "xpcom-shutdown");
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cpmm = null;
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break;
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default:
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break;
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}
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},
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receiveMessage: function(aMessage) {
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switch (aMessage.name) {
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case "SystemMessageCache:RefreshCache":
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this._pagesCache = aMessage.data;
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debug("received RefreshCache");
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break;
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default:
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debug("received unknown message " + aMessage.name);
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break;
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}
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},
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hasPendingMessage: function(aType, aPageURL, aManifestURL) {
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let hasMessage = this._pagesCache.some(function(aPage) {
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if (aPage.type === aType &&
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aPage.pageURL === aPageURL &&
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aPage.manifestURL === aManifestURL) {
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return true;
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}
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return false;
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}, this);
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debug("hasPendingMessage " + aType + " " + aPageURL + " " +
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aManifestURL + ": " + hasMessage);
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return hasMessage;
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},
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classID: Components.ID("{5a19d86a-21e5-4ac8-9634-8c364c73f87f}"),
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QueryInterface: XPCOMUtils.generateQI([Ci.nsISystemMessageCache,
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Ci.nsIMessageListener,
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Ci.nsIObserver])
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};
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this.NSGetFactory = XPCOMUtils.generateNSGetFactory([SystemMessageCache]);
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