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/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
/* ***** BEGIN LICENSE BLOCK *****
 * Version: MPL 1.1/GPL 2.0/LGPL 2.1
 *
 * The contents of this file are subject to the Mozilla Public License Version
 * 1.1 (the "License"); you may not use this file except in compliance with
 * the License. You may obtain a copy of the License at
 * http://www.mozilla.org/MPL/
 *
 * Software distributed under the License is distributed on an "AS IS" basis,
 * WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
 * for the specific language governing rights and limitations under the
 * License.
 *
 * The Original Code is mozilla.org code.
 *
 * The Initial Developer of the Original Code is
 * Netscape Communications Corporation.
 * Portions created by the Initial Developer are Copyright (C) 1998
 * the Initial Developer. All Rights Reserved.
 *
 * Contributor(s):
 *
 * Alternatively, the contents of this file may be used under the terms of
 * either the GNU General Public License Version 2 or later (the "GPL"), or
 * the GNU Lesser General Public License Version 2.1 or later (the "LGPL"),
 * in which case the provisions of the GPL or the LGPL are applicable instead
 * of those above. If you wish to allow use of your version of this file only
 * under the terms of either the GPL or the LGPL, and not to allow others to
 * use your version of this file under the terms of the MPL, indicate your
 * decision by deleting the provisions above and replace them with the notice
 * and other provisions required by the GPL or the LGPL. If you do not delete
 * the provisions above, a recipient may use your version of this file under
 * the terms of any one of the MPL, the GPL or the LGPL.
 *
 * ***** END LICENSE BLOCK ***** */

#ifndef nsIAppStartupNotifier_h___
#define nsIAppStartupNotifier_h___

#include "nsIObserver.h"

/*
 Some components need to be run at the startup of mozilla or embedding - to 
 start new services etc.

 This interface provides a generic way to start up arbitrary components 
 without requiring them to hack into main1() (or into NS_InitEmbedding) as 
 it's currently being done for services such as wallet, command line handlers 
 etc.

 We will have a category called "app-startup" which components register 
 themselves in using the CategoryManager.

 Components can also (optionally) add the word "service," as a prefix 
 to the "value" they pass in during a call to AddCategoryEntry() as
 shown below:

    categoryManager->AddCategoryEntry(APPSTARTUP_CATEGORY, "testcomp",
                        "service," NS_WALLETSERVICE_CONTRACTID
                        true, true,
                        getter_Copies(previous));

 Presence of the "service" keyword indicates the components desire to 
 be started as a service. When the "service" keyword is not present
 we just do a do_CreateInstance.

 When mozilla starts (and when NS_InitEmbedding()) is invoked
 we create an instance of the AppStartupNotifier component (which 
 implements nsIObserver) and invoke its Observe() method. 

 Observe()  will enumerate the components registered into the
 APPSTARTUP_CATEGORY and notify them that startup has begun
 and release them.
*/

#define NS_APPSTARTUPNOTIFIER_CONTRACTID "@mozilla.org/embedcomp/appstartup-notifier;1"
#define NS_APPSTARTUPNOTIFIER_CLASSNAME  "AppStartup Notifier"

#define APPSTARTUP_CATEGORY "app-startup"
#define APPSTARTUP_TOPIC    "app-startup"


/*
 Please note that there's not a new interface in this file.
 We're just leveraging nsIObserver instead of creating a
 new one

 This file exists solely to provide the defines above
*/

#endif /* nsIAppStartupNotifier_h___ */