gecko-dev/layout/forms/nsSelectsAreaFrame.h
2012-05-21 12:12:37 +01:00

46 lines
1.7 KiB
C++

/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
/* This Source Code Form is subject to the terms of the Mozilla Public
* License, v. 2.0. If a copy of the MPL was not distributed with this
* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
#ifndef nsSelectsAreaFrame_h___
#define nsSelectsAreaFrame_h___
#include "nsBlockFrame.h"
class nsSelectsAreaFrame : public nsBlockFrame
{
public:
NS_DECL_FRAMEARENA_HELPERS
friend nsIFrame* NS_NewSelectsAreaFrame(nsIPresShell* aShell, nsStyleContext* aContext, PRUint32 aFlags);
NS_IMETHOD BuildDisplayList(nsDisplayListBuilder* aBuilder,
const nsRect& aDirtyRect,
const nsDisplayListSet& aLists);
nsresult BuildDisplayListInternal(nsDisplayListBuilder* aBuilder,
const nsRect& aDirtyRect,
const nsDisplayListSet& aLists);
NS_IMETHOD Reflow(nsPresContext* aCX,
nsHTMLReflowMetrics& aDesiredSize,
const nsHTMLReflowState& aReflowState,
nsReflowStatus& aStatus);
nscoord HeightOfARow() const { return mHeightOfARow; }
protected:
nsSelectsAreaFrame(nsStyleContext* aContext) :
nsBlockFrame(aContext),
mHeightOfARow(0)
{}
// We cache the height of a single row so that changes to the "size"
// attribute, padding, etc. can all be handled with only one reflow. We'll
// have to reflow twice if someone changes our font size or something like
// that, so that the heights of our options will change.
nscoord mHeightOfARow;
};
#endif /* nsSelectsAreaFrame_h___ */