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118 lines
3.9 KiB
C++
118 lines
3.9 KiB
C++
/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
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/* ***** BEGIN LICENSE BLOCK *****
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* Version: MPL 1.1/GPL 2.0/LGPL 2.1
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*
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* The contents of this file are subject to the Mozilla Public License Version
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* 1.1 (the "License"); you may not use this file except in compliance with
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* the License. You may obtain a copy of the License at
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* http://www.mozilla.org/MPL/
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*
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* Software distributed under the License is distributed on an "AS IS" basis,
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* WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
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* for the specific language governing rights and limitations under the
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* License.
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*
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* The Original Code is mozilla.org code.
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*
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* The Initial Developer of the Original Code is
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* Netscape Communications Corporation.
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* Portions created by the Initial Developer are Copyright (C) 1998-1999
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* the Initial Developer. All Rights Reserved.
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*
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* Contributor(s):
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*
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* Alternatively, the contents of this file may be used under the terms of
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* either of the GNU General Public License Version 2 or later (the "GPL"),
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* or the GNU Lesser General Public License Version 2.1 or later (the "LGPL"),
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* in which case the provisions of the GPL or the LGPL are applicable instead
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* of those above. If you wish to allow use of your version of this file only
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* under the terms of either the GPL or the LGPL, and not to allow others to
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* use your version of this file under the terms of the MPL, indicate your
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* decision by deleting the provisions above and replace them with the notice
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* and other provisions required by the GPL or the LGPL. If you do not delete
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* the provisions above, a recipient may use your version of this file under
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* the terms of any one of the MPL, the GPL or the LGPL.
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*
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* ***** END LICENSE BLOCK ***** */
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#ifndef ChangeAttributeTxn_h__
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#define ChangeAttributeTxn_h__
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#include "EditTxn.h"
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#include "nsCOMPtr.h"
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#include "nsIDOMElement.h"
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#include "nsIEditor.h"
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#define CHANGE_ATTRIBUTE_TXN_CID \
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{/* 97818860-ac48-11d2-86d8-000064657374 */ \
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0x97818860, 0xac48, 0x11d2, \
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{0x86, 0xd8, 0x0, 0x0, 0x64, 0x65, 0x73, 0x74} }
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/**
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* A transaction that changes an attribute of a content node.
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* This transaction covers add, remove, and change attribute.
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*/
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class ChangeAttributeTxn : public EditTxn
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{
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public:
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static const nsIID& GetCID() { static const nsIID iid = CHANGE_ATTRIBUTE_TXN_CID; return iid; }
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virtual ~ChangeAttributeTxn();
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/** Initialize the transaction.
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* @param aEditor the object providing core editing operations
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* @param aNode the node whose attribute will be changed
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* @param aAttribute the name of the attribute to change
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* @param aValue the new value for aAttribute, if aRemoveAttribute is false
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* @param aRemoveAttribute if PR_TRUE, remove aAttribute from aNode
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*/
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NS_IMETHOD Init(nsIEditor *aEditor,
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nsIDOMElement *aNode,
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const nsAString& aAttribute,
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const nsAString& aValue,
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PRBool aRemoveAttribute);
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private:
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ChangeAttributeTxn();
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public:
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NS_IMETHOD DoTransaction(void);
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NS_IMETHOD UndoTransaction(void);
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NS_IMETHOD RedoTransaction(void);
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NS_IMETHOD Merge(nsITransaction *aTransaction, PRBool *aDidMerge);
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NS_IMETHOD GetTxnDescription(nsAString& aTxnDescription);
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protected:
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/** the editor that created this transaction */
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nsIEditor* mEditor;
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/** the element to operate upon */
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nsCOMPtr<nsIDOMElement> mElement;
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/** the attribute to change */
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nsString mAttribute;
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/** the value to set the attribute to (ignored if mRemoveAttribute==PR_TRUE) */
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nsString mValue;
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/** the value to set the attribute to for undo */
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nsString mUndoValue;
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/** PR_TRUE if the mAttribute was set on mElement at the time of execution */
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PRBool mAttributeWasSet;
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/** PR_TRUE if the operation is to remove mAttribute from mElement */
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PRBool mRemoveAttribute;
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friend class TransactionFactory;
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};
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#endif
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