gecko-dev/widget/public/nsIEventListener.h

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/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
/* ***** BEGIN LICENSE BLOCK *****
* Version: NPL 1.1/GPL 2.0/LGPL 2.1
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*
* The contents of this file are subject to the Netscape 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/NPL/
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*
* 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.
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*
* 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
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* ***** END LICENSE BLOCK ***** */
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#ifndef nsIEventListener_h__
#define nsIEventListener_h__
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#include "nsISupports.h"
struct nsGUIEvent;
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/**
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* Event listener interface.
* Alternative to a callback for recieving events.
*/
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// {c83f6b80-d7ce-11d2-8360-c4c894c4917c}
#define NS_IEVENTLISTENER_IID \
{ 0xc83f6b80, 0xd7ce, 0x11d2, { 0x83, 0x60, 0xc4, 0xc8, 0x94, 0xc4, 0x91, 0x7c } }
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class nsIEventListener : public nsISupports {
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public:
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NS_DEFINE_STATIC_IID_ACCESSOR(NS_IEVENTLISTENER_IID)
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/**
* Processes all events.
* If a mouse listener is registered this method will not process mouse events.
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* @param anEvent the event to process. See nsGUIEvent.h for event types.
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*/
virtual nsEventStatus ProcessEvent(const nsGUIEvent & anEvent) = 0;
};
#endif // nsIEventListener_h__