зеркало из https://github.com/mozilla/gecko-dev.git
57 строки
1.6 KiB
JavaScript
57 строки
1.6 KiB
JavaScript
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/* 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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function debug(s) {
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// dump("-*- SettingsChangeNotifier: " + s + "\n");
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}
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const Cu = Components.utils;
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const Cc = Components.classes;
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const Ci = Components.interfaces;
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let EXPORTED_SYMBOLS = ["SettingsChangeNotifier"];
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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.defineLazyGetter(this, "ppmm", function() {
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return Cc["@mozilla.org/parentprocessmessagemanager;1"].getService(Ci.nsIFrameMessageManager);
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});
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let SettingsChangeNotifier = {
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init: function() {
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debug("init");
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ppmm.addMessageListener("Settings:Changed", this);
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Services.obs.addObserver(this, "xpcom-shutdown", false);
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},
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observe: function(aSubject, aTopic, aData) {
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debug("observe");
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ppmm.removeMessageListener("Settings:Changed", this);
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Services.obs.removeObserver(this, "xpcom-shutdown");
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ppmm = null;
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},
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receiveMessage: function(aMessage) {
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debug("receiveMessage");
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let msg = aMessage.json;
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switch (aMessage.name) {
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case "Settings:Changed":
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ppmm.sendAsyncMessage("Settings:Change:Return:OK", { key: msg.key, value: msg.value });
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Services.obs.notifyObservers(this, "mozsettings-changed", JSON.stringify({
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key: msg.key,
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value: msg.value
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}));
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break;
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default:
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debug("Wrong message: " + aMessage.name);
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}
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}
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}
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SettingsChangeNotifier.init();
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