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67 lines
1.8 KiB
C++
67 lines
1.8 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 DeleteTextTxn_h__
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#define DeleteTextTxn_h__
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#include "EditTxn.h"
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#include "nsIEditor.h"
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#include "nsIDOMCharacterData.h"
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#include "nsCOMPtr.h"
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class nsRangeUpdater;
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/**
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* A transaction that removes text from a content node.
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*/
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class DeleteTextTxn : 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 provider of basic editing operations
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* @param aElement the content node to remove text from
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* @param aOffset the location in aElement to begin the deletion
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* @param aNumCharsToDelete the number of characters to delete. Not the number of bytes!
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*/
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NS_IMETHOD Init(nsIEditor *aEditor,
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nsIDOMCharacterData *aElement,
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PRUint32 aOffset,
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PRUint32 aNumCharsToDelete,
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nsRangeUpdater *aRangeUpdater);
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DeleteTextTxn();
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NS_DECL_CYCLE_COLLECTION_CLASS_INHERITED(DeleteTextTxn, EditTxn)
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NS_IMETHOD QueryInterface(REFNSIID aIID, void** aInstancePtr);
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NS_DECL_EDITTXN
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PRUint32 GetOffset() { return mOffset; }
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PRUint32 GetNumCharsToDelete() { return mNumCharsToDelete; }
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protected:
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/** the provider of basic editing operations */
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nsIEditor* mEditor;
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/** the text element to operate upon */
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nsCOMPtr<nsIDOMCharacterData> mElement;
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/** the offset into mElement where the deletion is to take place */
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PRUint32 mOffset;
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/** the number of characters to delete */
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PRUint32 mNumCharsToDelete;
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/** the text that was deleted */
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nsString mDeletedText;
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/** range updater object */
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nsRangeUpdater *mRangeUpdater;
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};
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#endif
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