pjs/layout/generic/nsPlaceholderFrame.h

95 строки
3.4 KiB
C
Исходник Обычный вид История

/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
/* ***** BEGIN LICENSE BLOCK *****
* Version: MPL 1.1/GPL 2.0/LGPL 2.1
1998-04-14 00:24:54 +04:00
*
* The contents of this file are subject to the Mozilla Public License Version
* 1.1 (the "License"); you may not use this file except in compliance with
* the License. You may obtain a copy of the License at
* http://www.mozilla.org/MPL/
1998-04-14 00:24:54 +04:00
*
* Software distributed under the License is distributed on an "AS IS" basis,
* WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
* for the specific language governing rights and limitations under the
* License.
1998-04-14 00:24:54 +04:00
*
* The Original Code is mozilla.org code.
*
* The Initial Developer of the Original Code is
* Netscape Communications Corporation.
* Portions created by the Initial Developer are Copyright (C) 1998
* the Initial Developer. All Rights Reserved.
*
* Contributor(s):
*
* Alternatively, the contents of this file may be used under the terms of
* either of the GNU General Public License Version 2 or later (the "GPL"),
* or the GNU Lesser General Public License Version 2.1 or later (the "LGPL"),
* in which case the provisions of the GPL or the LGPL are applicable instead
* of those above. If you wish to allow use of your version of this file only
* under the terms of either the GPL or the LGPL, and not to allow others to
* use your version of this file under the terms of the MPL, indicate your
* decision by deleting the provisions above and replace them with the notice
* and other provisions required by the GPL or the LGPL. If you do not delete
* the provisions above, a recipient may use your version of this file under
* the terms of any one of the MPL, the GPL or the LGPL.
*
* ***** END LICENSE BLOCK ***** */
1998-04-14 00:24:54 +04:00
#ifndef nsPlaceholderFrame_h___
#define nsPlaceholderFrame_h___
#include "nsSplittableFrame.h"
1998-04-14 00:24:54 +04:00
nsresult NS_NewPlaceholderFrame(nsIPresShell* aPresShell, nsIFrame** aInstancePtrResult);
/**
* Implementation of a frame that's used as a placeholder for a frame that
* has been moved out of the flow
*/
class nsPlaceholderFrame : public nsSplittableFrame {
1998-04-14 00:24:54 +04:00
public:
/**
* Create a new placeholder frame
*/
friend nsresult NS_NewPlaceholderFrame(nsIPresShell* aPresShell, nsIFrame** aInstancePtrResult);
nsPlaceholderFrame();
virtual ~nsPlaceholderFrame();
1998-04-14 00:24:54 +04:00
// Get/Set the associated out of flow frame
1999-05-04 00:54:24 +04:00
nsIFrame* GetOutOfFlowFrame() const {return mOutOfFlowFrame;}
void SetOutOfFlowFrame(nsIFrame* aFrame) {mOutOfFlowFrame = aFrame;}
1998-04-14 00:24:54 +04:00
// nsIHTMLReflow overrides
NS_IMETHOD Reflow(nsPresContext* aPresContext,
nsHTMLReflowMetrics& aDesiredSize,
const nsHTMLReflowState& aReflowState,
nsReflowStatus& aStatus);
// nsIFrame overrides
#ifdef DEBUG
NS_IMETHOD Paint(nsPresContext* aPresContext,
1998-07-17 03:32:04 +04:00
nsIRenderingContext& aRenderingContext,
const nsRect& aDirtyRect,
nsFramePaintLayer aWhichLayer,
PRUint32 aFlags = 0);
NS_IMETHOD List(nsPresContext* aPresContext, FILE* out, PRInt32 aIndent) const;
#endif
/**
* Get the "type" of the frame
*
* @see nsLayoutAtoms::placeholderFrame
*/
virtual nsIAtom* GetType() const;
#ifdef DEBUG
NS_IMETHOD GetFrameName(nsAString& aResult) const;
#endif
1998-04-14 00:24:54 +04:00
virtual PRBool IsEmpty();
1998-04-14 00:24:54 +04:00
protected:
nsIFrame* mOutOfFlowFrame;
1998-04-14 00:24:54 +04:00
};
#endif /* nsPlaceholderFrame_h___ */