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103 lines
3.3 KiB
C++
103 lines
3.3 KiB
C++
/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
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/* ***** BEGIN LICENSE BLOCK *****
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* Version: MPL 1.1/GPL 2.0/LGPL 2.1
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*
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* The contents of this file are subject to the Mozilla Public License Version
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* 1.1 (the "License"); you may not use this file except in compliance with
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* the License. You may obtain a copy of the License at
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* http://www.mozilla.org/MPL/
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*
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* Software distributed under the License is distributed on an "AS IS" basis,
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* WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
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* for the specific language governing rights and limitations under the
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* License.
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*
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* The Original Code is mozilla.org code.
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*
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* The Initial Developer of the Original Code is
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* Netscape Communications Corporation.
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* Portions created by the Initial Developer are Copyright (C) 1998
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* the Initial Developer. All Rights Reserved.
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*
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* Contributor(s):
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*
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* Alternatively, the contents of this file may be used under the terms of
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* either of the GNU General Public License Version 2 or later (the "GPL"),
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* or the GNU Lesser General Public License Version 2.1 or later (the "LGPL"),
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* in which case the provisions of the GPL or the LGPL are applicable instead
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* of those above. If you wish to allow use of your version of this file only
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* under the terms of either the GPL or the LGPL, and not to allow others to
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* use your version of this file under the terms of the MPL, indicate your
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* decision by deleting the provisions above and replace them with the notice
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* and other provisions required by the GPL or the LGPL. If you do not delete
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* the provisions above, a recipient may use your version of this file under
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* the terms of any one of the MPL, the GPL or the LGPL.
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*
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* ***** END LICENSE BLOCK ***** */
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/*
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* a list of the recomputation that needs to be done in response to a
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* style change
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*/
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#ifndef nsStyleChangeList_h___
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#define nsStyleChangeList_h___
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#include "nsError.h"
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#include "nsChangeHint.h"
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class nsIFrame;
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class nsIContent;
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// XXX would all platforms support putting this inside the list?
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struct nsStyleChangeData {
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nsIFrame* mFrame;
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nsIContent* mContent;
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nsChangeHint mHint;
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};
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static const PRUint32 kStyleChangeBufferSize = 10;
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// Note: nsStyleChangeList owns a reference to
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// nsIContent pointers in its list.
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class nsStyleChangeList {
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public:
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nsStyleChangeList();
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~nsStyleChangeList();
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PRInt32 Count(void) const {
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return mCount;
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}
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/**
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* Fills in pointers without reference counting.
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*/
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nsresult ChangeAt(PRInt32 aIndex, nsIFrame*& aFrame, nsIContent*& aContent,
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nsChangeHint& aHint) const;
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/**
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* Fills in a pointer to the list entry storage (no reference counting
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* involved).
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*/
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nsresult ChangeAt(PRInt32 aIndex, const nsStyleChangeData** aChangeData) const;
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nsresult AppendChange(nsIFrame* aFrame, nsIContent* aContent, nsChangeHint aHint);
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void Clear(void);
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protected:
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nsStyleChangeList& operator=(const nsStyleChangeList& aCopy);
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PRBool operator==(const nsStyleChangeList& aOther) const;
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nsStyleChangeData* mArray;
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PRInt32 mArraySize;
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PRInt32 mCount;
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nsStyleChangeData mBuffer[kStyleChangeBufferSize];
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private:
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nsStyleChangeList(const nsStyleChangeList&); // not implemented
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};
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#endif /* nsStyleChangeList_h___ */
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