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103 lines
2.9 KiB
C++
103 lines
2.9 KiB
C++
/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*-
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*
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* The contents of this file are subject to the Netscape Public License
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* Version 1.0 (the "NPL"); you may not use this file except in
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* compliance with the NPL. You may obtain a copy of the NPL at
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* http://www.mozilla.org/NPL/
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*
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* Software distributed under the NPL is distributed on an "AS IS" basis,
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* WITHOUT WARRANTY OF ANY KIND, either express or implied. See the NPL
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* for the specific language governing rights and limitations under the
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* NPL.
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*
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* The Initial Developer of this code under the NPL is Netscape
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* Communications Corporation. Portions created by Netscape are
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* Copyright (C) 1998 Netscape Communications Corporation. All Rights
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* Reserved.
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*/
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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 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 nsString& aAttribute,
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const nsString& 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 Do(void);
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NS_IMETHOD Undo(void);
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NS_IMETHOD Redo(void);
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NS_IMETHOD Merge(PRBool *aDidMerge, nsITransaction *aTransaction);
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NS_IMETHOD Write(nsIOutputStream *aOutputStream);
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NS_IMETHOD GetUndoString(nsString *aString);
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NS_IMETHOD GetRedoString(nsString *aString);
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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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