nsSelectsAreaFrame.h

Enable keyboard shortcuts

/* -*- 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_QUERYFRAME

  NS_DECL_FRAMEARENA_HELPERS(nsSelectsAreaFrame)

  friend nsContainerFrame* NS_NewSelectsAreaFrame(mozilla::PresShell* aShell,

                                                  ComputedStyle* aStyle);

  void BuildDisplayList(nsDisplayListBuilder* aBuilder,

                        const nsDisplayListSet& aLists) override;

  void BuildDisplayListInternal(nsDisplayListBuilder* aBuilder,

                                const nsDisplayListSet& aLists);

  void Reflow(nsPresContext* aCX, ReflowOutput& aDesiredSize,

              const ReflowInput& aReflowInput,

              nsReflowStatus& aStatus) override;

  nscoord BSizeOfARow() const { return mBSizeOfARow; }

#ifdef DEBUG_FRAME_DUMP

  nsresult GetFrameName(nsAString& aResult) const override {

    return MakeFrameName(u"SelectsArea"_ns, aResult);

#endif

 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___ */