gecko-dev/dom/alarm/AlarmsManager.js

195 строки
5.9 KiB
JavaScript

/* 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";
/* static functions */
const DEBUG = false;
function debug(aStr) {
if (DEBUG)
dump("AlarmsManager: " + aStr + "\n");
}
const { classes: Cc, interfaces: Ci, utils: Cu, results: Cr } = Components;
Cu.import("resource://gre/modules/XPCOMUtils.jsm");
Cu.import("resource://gre/modules/Services.jsm");
Cu.import("resource://gre/modules/DOMRequestHelper.jsm");
Cu.import("resource://gre/modules/ObjectWrapper.jsm");
const ALARMSMANAGER_CONTRACTID = "@mozilla.org/alarmsManager;1";
const ALARMSMANAGER_CID = Components.ID("{fea1e884-9b05-11e1-9b64-87a7016c3860}");
const nsIDOMMozAlarmsManager = Ci.nsIDOMMozAlarmsManager;
const nsIClassInfo = Ci.nsIClassInfo;
function AlarmsManager()
{
debug("Constructor");
}
AlarmsManager.prototype = {
__proto__: DOMRequestIpcHelper.prototype,
classID : ALARMSMANAGER_CID,
QueryInterface : XPCOMUtils.generateQI([nsIDOMMozAlarmsManager,
Ci.nsIDOMGlobalPropertyInitializer,
Ci.nsISupportsWeakReference]),
classInfo : XPCOMUtils.generateCI({ classID: ALARMSMANAGER_CID,
contractID: ALARMSMANAGER_CONTRACTID,
classDescription: "AlarmsManager",
interfaces: [nsIDOMMozAlarmsManager],
flags: nsIClassInfo.DOM_OBJECT }),
add: function add(aDate, aRespectTimezone, aData) {
debug("add()");
if (!this._manifestURL) {
debug("Cannot add alarms for non-installed apps.");
throw Components.results.NS_ERROR_FAILURE;
}
if (!aDate) {
throw Components.results.NS_ERROR_INVALID_ARG;
}
let isIgnoreTimezone = true;
switch (aRespectTimezone) {
case "honorTimezone":
isIgnoreTimezone = false;
break;
case "ignoreTimezone":
isIgnoreTimezone = true;
break;
default:
throw Components.results.NS_ERROR_INVALID_ARG;
break;
}
let request = this.createRequest();
this._cpmm.sendAsyncMessage(
"AlarmsManager:Add",
{ requestId: this.getRequestId(request),
date: aDate,
ignoreTimezone: isIgnoreTimezone,
data: aData,
pageURL: this._pageURL,
manifestURL: this._manifestURL }
);
return request;
},
remove: function remove(aId) {
debug("remove()");
this._cpmm.sendAsyncMessage(
"AlarmsManager:Remove",
{ id: aId, manifestURL: this._manifestURL }
);
},
getAll: function getAll() {
debug("getAll()");
let request = this.createRequest();
this._cpmm.sendAsyncMessage(
"AlarmsManager:GetAll",
{ requestId: this.getRequestId(request), manifestURL: this._manifestURL }
);
return request;
},
receiveMessage: function receiveMessage(aMessage) {
debug("receiveMessage(): " + aMessage.name);
let json = aMessage.json;
let request = this.getRequest(json.requestId);
if (!request) {
debug("No request stored! " + json.requestId);
return;
}
switch (aMessage.name) {
case "AlarmsManager:Add:Return:OK":
Services.DOMRequest.fireSuccess(request, json.id);
break;
case "AlarmsManager:GetAll:Return:OK":
// We don't need to expose everything to the web content.
let alarms = [];
json.alarms.forEach(function trimAlarmInfo(aAlarm) {
let alarm = { "id": aAlarm.id,
"date": aAlarm.date,
"respectTimezone": aAlarm.ignoreTimezone ?
"ignoreTimezone" : "honorTimezone",
"data": aAlarm.data };
alarms.push(alarm);
});
Services.DOMRequest.fireSuccess(request,
ObjectWrapper.wrap(alarms, this._window));
break;
case "AlarmsManager:Add:Return:KO":
Services.DOMRequest.fireError(request, json.errorMsg);
break;
case "AlarmsManager:GetAll:Return:KO":
Services.DOMRequest.fireError(request, json.errorMsg);
break;
default:
debug("Wrong message: " + aMessage.name);
break;
}
this.removeRequest(json.requestId);
},
// nsIDOMGlobalPropertyInitializer implementation
init: function init(aWindow) {
debug("init()");
// Set navigator.mozAlarms to null.
if (!Services.prefs.getBoolPref("dom.mozAlarms.enabled")) {
return null;
}
// Only pages with perm set can use the alarms.
let principal = aWindow.document.nodePrincipal;
let perm =
Services.perms.testExactPermissionFromPrincipal(principal, "alarms");
if (perm != Ci.nsIPermissionManager.ALLOW_ACTION) {
return null;
}
this._cpmm = Cc["@mozilla.org/childprocessmessagemanager;1"]
.getService(Ci.nsISyncMessageSender);
// Add the valid messages to be listened.
this.initDOMRequestHelper(aWindow, ["AlarmsManager:Add:Return:OK",
"AlarmsManager:Add:Return:KO",
"AlarmsManager:GetAll:Return:OK",
"AlarmsManager:GetAll:Return:KO"]);
// Get the manifest URL if this is an installed app
let appsService = Cc["@mozilla.org/AppsService;1"]
.getService(Ci.nsIAppsService);
this._pageURL = principal.URI.spec;
this._manifestURL = appsService.getManifestURLByLocalId(principal.appId);
this._window = aWindow;
},
// Called from DOMRequestIpcHelper.
uninit: function uninit() {
debug("uninit()");
},
}
this.NSGetFactory = XPCOMUtils.generateNSGetFactory([AlarmsManager])