gecko-dev/content/events/src/nsXMLEventsManager.h

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4.0 KiB
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/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
/* ***** 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
* Olli Pettay.
* Portions created by the Initial Developer are Copyright (C) 2004
* the Initial Developer. All Rights Reserved.
*
* Contributor(s):
* Olli Pettay <Olli.Pettay@helsinki.fi> (original author)
*
* 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 ***** */
#ifndef nsXMLEventsManager_h___
#define nsXMLEventsManager_h___
#include "nsCOMPtr.h"
#include "nsIDocument.h"
#include "nsIContent.h"
#include "nsCOMArray.h"
#include "nsIDOMEventListener.h"
#include "nsInterfaceHashtable.h"
#include "nsIAtom.h"
/*
* The implementation of the XML Events Basic profile
*/
class nsXMLEventsManager;
class nsXMLEventsListener : public nsIDOMEventListener {
public:
static PRBool InitXMLEventsListener(nsIDocument * aDocument,
nsXMLEventsManager * aManager,
nsIContent * aContent);
nsXMLEventsListener(nsXMLEventsManager * aManager,
nsIContent * aElement,
nsIContent* aObserver,
nsIContent * aHandler,
const nsAString& aEvent,
PRBool aPhase,
PRBool aStopPropagation,
PRBool aCancelDefault,
const nsAString& aTarget);
~nsXMLEventsListener();
void Unregister();
//Removes this event listener from observer and adds the element back to the
//list of incomplete XML Events declarations in XMLEventsManager
void SetIncomplete();
PRBool ObserverEquals(nsIContent * aTarget);
PRBool HandlerEquals(nsIContent * aTarget);
NS_DECL_ISUPPORTS
NS_DECL_NSIDOMEVENTLISTENER
private:
nsXMLEventsManager * mManager;
nsCOMPtr<nsIContent> mElement;
nsCOMPtr<nsIContent> mObserver;
nsCOMPtr<nsIContent> mHandler;
nsString mEvent;
nsCOMPtr<nsIAtom> mTarget;
PRPackedBool mPhase;
PRPackedBool mStopPropagation;
PRPackedBool mCancelDefault;
};
class nsXMLEventsManager : public nsIDocumentObserver {
public:
nsXMLEventsManager();
~nsXMLEventsManager();
NS_DECL_ISUPPORTS
NS_DECL_NSIDOCUMENTOBSERVER
void AddXMLEventsContent(nsIContent * aContent);
void RemoveXMLEventsContent(nsIContent * aContent);
void AddListener(nsIContent * aContent, nsXMLEventsListener * aListener);
//Returns PR_TRUE if a listener was removed.
PRBool RemoveListener(nsIContent * aXMLElement);
private:
void AddListeners(nsIDocument* aDocument);
nsInterfaceHashtable<nsISupportsHashKey,nsXMLEventsListener> mListeners;
nsCOMArray<nsIContent> mIncomplete;
};
#endif /* nsXMLEventsManager_h___ */