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/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
/* vim: set ts=8 sts=2 et sw=2 tw=80: */
/* 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 "mozilla/Attributes.h"
#include "nsBlockFrame.h"
namespace mozilla {
class PresShell;
} // namespace mozilla
class nsSelectsAreaFrame final : public nsBlockFrame {
public:
NS_DECL_FRAMEARENA_HELPERS(nsSelectsAreaFrame)
friend nsContainerFrame* NS_NewSelectsAreaFrame(mozilla::PresShell* aShell,
ComputedStyle* aStyle,
nsFrameState aFlags);
virtual void BuildDisplayList(nsDisplayListBuilder* aBuilder,
const nsDisplayListSet& aLists) override;
void BuildDisplayListInternal(nsDisplayListBuilder* aBuilder,
const nsDisplayListSet& aLists);
virtual void Reflow(nsPresContext* aCX, ReflowOutput& aDesiredSize,
const ReflowInput& aReflowInput,
nsReflowStatus& aStatus) override;
nscoord BSizeOfARow() const { return mBSizeOfARow; }
protected:
explicit nsSelectsAreaFrame(ComputedStyle* aStyle,
nsPresContext* aPresContext)
: nsBlockFrame(aStyle, aPresContext, kClassID),
// initialize to wacky value so first call of
// nsSelectsAreaFrame::Reflow will always invalidate
mBSizeOfARow(nscoord_MIN) {}
// We cache the block size 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 block size of our options
// will change.
nscoord mBSizeOfARow;
};
#endif /* nsSelectsAreaFrame_h___ */
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