gecko-dev/xpcom/components/nsIFactory.idl

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/* -*- Mode: IDL; 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 of 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 ***** */
#include "nsISupports.idl"
/**
* A class factory allows the creation of nsISupports derived
* components without specifying a concrete base class.
*
* @status FROZEN
*/
[scriptable, object, uuid(00000001-0000-0000-c000-000000000046)]
interface nsIFactory : nsISupports {
/**
* Creates an instance of a component.
*
* @param aOuter Pointer to a component that wishes to be aggregated
* in the resulting instance. This will be nsnull if no
* aggregation is requested.
* @param iid The IID of the interface being requested in
* the component which is being currently created.
* @param result [out] Pointer to the newly created instance, if successful.
* @return NS_OK - Component successfully created and the interface
* being requested was successfully returned in result.
* NS_NOINTERFACE - Interface not accessible.
* NS_ERROR_NO_AGGREGATION - if an 'outer' object is supplied, but the
* component is not aggregatable.
* NS_ERROR* - Method failure.
*/
void createInstance(in nsISupports aOuter, in nsIIDRef iid,
[retval, iid_is(iid)] out nsQIResult result);
/**
* LockFactory provides the client a way to keep the component
* in memory until it is finished with it. The client can call
* LockFactory(PR_TRUE) to lock the factory and LockFactory(PR_FALSE)
* to release the factory.
*
* @param lock - Must be PR_TRUE or PR_FALSE
* @return NS_OK - If the lock operation was successful.
* NS_ERROR* - Method failure.
*/
void lockFactory(in PRBool lock);
};