pjs/widget/cocoa/nsChangeObserver.h

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/* -*- Mode: IDL; 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 Communicator.
*
* The Initial Developer of the Original Code is
* Netscape Communications Corp.
* Portions created by the Initial Developer are Copyright (C) 1999
* the Initial Developer. All Rights Reserved.
*
* Contributor(s):
* Mike Pinkerton
* Josh Aas <josh@mozilla.com> (decomtaminate)
*
* 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 nsChangeObserver_h_
#define nsChangeObserver_h_
class nsIContent;
class nsIDocument;
class nsIAtom;
#define NS_DECL_CHANGEOBSERVER \
void ObserveAttributeChanged(nsIDocument *aDocument, nsIContent *aContent, nsIAtom *aAttribute); \
void ObserveContentRemoved(nsIDocument *aDocument, nsIContent *aChild, PRInt32 aIndexInContainer); \
void ObserveContentInserted(nsIDocument *aDocument, nsIContent* aContainer, nsIContent *aChild);
// Something that wants to be alerted to changes in attributes or changes in
// its corresponding content object.
//
// This interface is used by our menu code so we only have to have one
// nsIDocumentObserver.
//
// Any class that implements this interface must take care to unregister itself
// on deletion.
class nsChangeObserver
{
public:
// XXX use dom::Element
virtual void ObserveAttributeChanged(nsIDocument* aDocument,
nsIContent* aContent,
nsIAtom* aAttribute)=0;
virtual void ObserveContentRemoved(nsIDocument* aDocument,
nsIContent* aChild,
PRInt32 aIndexInContainer)=0;
virtual void ObserveContentInserted(nsIDocument* aDocument,
nsIContent* aContainer,
nsIContent* aChild)=0;
};
#endif // nsChangeObserver_h_