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63 lines
1.8 KiB
C++
63 lines
1.8 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 nsEditorUtils_h__
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#define nsEditorUtils_h__
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#include "nsCOMPtr.h"
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#include "nsIDOMNode.h"
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#include "nsIDOMSelection.h"
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#include "nsIEditor.h"
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class nsAutoEditBatch
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{
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private:
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nsCOMPtr<nsIEditor> mEd;
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public:
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nsAutoEditBatch( nsIEditor *aEd) : mEd(do_QueryInterface(aEd))
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{ if (mEd) mEd->BeginTransaction(); }
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~nsAutoEditBatch() { if (mEd) mEd->EndTransaction(); }
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};
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class nsAutoSelectionReset
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{
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private:
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/** ref-counted reference to the selection that we are supposed to restore */
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nsCOMPtr<nsIDOMSelection> mSel;
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/** PR_TRUE if this instance initialized itself correctly */
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PRBool mInitialized;
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nsCOMPtr<nsIDOMNode> mStartNode;
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nsCOMPtr<nsIDOMNode> mEndNode;
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PRInt32 mStartOffset;
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PRInt32 mEndOffset;
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public:
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/** constructor responsible for remembering all state needed to restore aSel */
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nsAutoSelectionReset(nsIDOMSelection *aSel);
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/** destructor restores mSel to its former state */
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~nsAutoSelectionReset();
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};
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#endif // nsEditorUtils_h__
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