mirror of
https://github.com/rn10950/RetroZilla.git
synced 2024-11-14 11:40:13 +01:00
132 lines
4.7 KiB
C++
132 lines
4.7 KiB
C++
/* -*- 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
|
|
*
|
|
* 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/
|
|
*
|
|
* 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.
|
|
*
|
|
* 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 ***** */
|
|
#ifndef nsPlaceholderFrame_h___
|
|
#define nsPlaceholderFrame_h___
|
|
|
|
#include "nsSplittableFrame.h"
|
|
#include "nsLayoutAtoms.h"
|
|
|
|
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 {
|
|
public:
|
|
/**
|
|
* Create a new placeholder frame
|
|
*/
|
|
friend nsresult NS_NewPlaceholderFrame(nsIPresShell* aPresShell, nsIFrame** aInstancePtrResult);
|
|
nsPlaceholderFrame();
|
|
virtual ~nsPlaceholderFrame();
|
|
|
|
// Get/Set the associated out of flow frame
|
|
nsIFrame* GetOutOfFlowFrame() const {return mOutOfFlowFrame;}
|
|
void SetOutOfFlowFrame(nsIFrame* aFrame) {mOutOfFlowFrame = aFrame;}
|
|
|
|
// nsIHTMLReflow overrides
|
|
NS_IMETHOD Reflow(nsPresContext* aPresContext,
|
|
nsHTMLReflowMetrics& aDesiredSize,
|
|
const nsHTMLReflowState& aReflowState,
|
|
nsReflowStatus& aStatus);
|
|
|
|
NS_IMETHOD Destroy(nsPresContext* aPresContext);
|
|
|
|
// nsIFrame overrides
|
|
#ifdef DEBUG
|
|
NS_IMETHOD Paint(nsPresContext* aPresContext,
|
|
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
|
|
|
|
virtual PRBool IsEmpty() { return PR_TRUE; }
|
|
virtual PRBool IsSelfEmpty() { return PR_TRUE; }
|
|
|
|
#ifdef ACCESSIBILITY
|
|
NS_IMETHOD GetAccessible(nsIAccessible** aAccessible)
|
|
{
|
|
nsIFrame *realFrame = GetRealFrameForPlaceholder(this);
|
|
return realFrame ? realFrame->GetAccessible(aAccessible) :
|
|
nsSplittableFrame::GetAccessible(aAccessible);
|
|
}
|
|
#endif
|
|
|
|
/**
|
|
* @return the out-of-flow for aFrame if aFrame is a placeholder; otherwise
|
|
* aFrame
|
|
*/
|
|
static nsIFrame* GetRealFrameFor(nsIFrame* aFrame) {
|
|
NS_PRECONDITION(aFrame, "Must have a frame to work with");
|
|
if (aFrame->GetType() == nsLayoutAtoms::placeholderFrame) {
|
|
return GetRealFrameForPlaceholder(aFrame);
|
|
}
|
|
return aFrame;
|
|
}
|
|
|
|
/**
|
|
* @return the out-of-flow for aFrame, which is known to be a placeholder
|
|
*/
|
|
static nsIFrame* GetRealFrameForPlaceholder(nsIFrame* aFrame) {
|
|
NS_PRECONDITION(aFrame->GetType() == nsLayoutAtoms::placeholderFrame,
|
|
"Must have placeholder frame as input");
|
|
nsIFrame* outOfFlow =
|
|
NS_STATIC_CAST(nsPlaceholderFrame*, aFrame)->GetOutOfFlowFrame();
|
|
NS_ASSERTION(outOfFlow, "Null out-of-flow for placeholder?");
|
|
return outOfFlow;
|
|
}
|
|
|
|
protected:
|
|
nsIFrame* mOutOfFlowFrame;
|
|
};
|
|
|
|
#endif /* nsPlaceholderFrame_h___ */
|