зеркало из https://github.com/mozilla/gecko-dev.git
78 строки
2.2 KiB
C++
78 строки
2.2 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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class nsIDOMElement;
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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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ChangeAttributeTxn(nsEditor *aEditor,
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nsIDOMElement *aElement,
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const nsString& aAttribute,
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const nsString& aValue,
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PRBool aRemoveAttribute);
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virtual nsresult Do(void);
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virtual nsresult Undo(void);
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virtual nsresult Redo(void);
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virtual nsresult GetIsTransient(PRBool *aIsTransient);
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virtual nsresult Merge(PRBool *aDidMerge, nsITransaction *aTransaction);
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virtual nsresult Write(nsIOutputStream *aOutputStream);
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virtual nsresult GetUndoString(nsString **aString);
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virtual nsresult GetRedoString(nsString **aString);
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protected:
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/** the element to operate upon */
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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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};
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#endif
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