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78 lines
2.1 KiB
C++
78 lines
2.1 KiB
C++
/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
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/* This Source Code Form is subject to the terms of the Mozilla Public
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* License, v. 2.0. If a copy of the MPL was not distributed with this
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* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
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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 "nsCycleCollectionParticipant.h"
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#include "nsISupportsImpl.h"
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#include "nsString.h"
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#include "nscore.h"
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class nsEditor;
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namespace mozilla {
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namespace dom {
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class Element;
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}
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}
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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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/** 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 true, remove aAttribute from aNode
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*/
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NS_IMETHOD Init(nsEditor *aEditor,
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mozilla::dom::Element *aNode,
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const nsAString& aAttribute,
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const nsAString& aValue,
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bool aRemoveAttribute);
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ChangeAttributeTxn();
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NS_DECL_ISUPPORTS_INHERITED
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NS_DECL_CYCLE_COLLECTION_CLASS_INHERITED(ChangeAttributeTxn, EditTxn)
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NS_DECL_EDITTXN
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NS_IMETHOD RedoTransaction();
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protected:
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/** the editor that created this transaction */
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nsEditor* mEditor;
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/** the element to operate upon */
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nsCOMPtr<mozilla::dom::Element> 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==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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/** true if the mAttribute was set on mElement at the time of execution */
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bool mAttributeWasSet;
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/** true if the operation is to remove mAttribute from mElement */
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bool mRemoveAttribute;
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};
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#endif
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