nsMeterFrame.h - mozsearch

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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 nsMeterFrame_h___

#define nsMeterFrame_h___

#include "nsContainerFrame.h"

#include "nsIAnonymousContentCreator.h"

#include "nsCOMPtr.h"

class nsMeterFrame final : public nsContainerFrame,

                           public nsIAnonymousContentCreator

  using Element = mozilla::dom::Element;

 public:

  NS_DECL_QUERYFRAME

  NS_DECL_FRAMEARENA_HELPERS(nsMeterFrame)

  explicit nsMeterFrame(ComputedStyle* aStyle, nsPresContext* aPresContext);

  virtual ~nsMeterFrame();

  void Destroy(DestroyContext&) override;

  void Reflow(nsPresContext*, ReflowOutput&, const ReflowInput&,

              nsReflowStatus&) override;

#ifdef DEBUG_FRAME_DUMP

  nsresult GetFrameName(nsAString& aResult) const override {

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

#endif

  // nsIAnonymousContentCreator

  nsresult CreateAnonymousContent(nsTArray<ContentInfo>& aElements) override;

  void AppendAnonymousContentTo(nsTArray<nsIContent*>& aElements,

                                uint32_t aFilter) override;

  nsresult AttributeChanged(int32_t aNameSpaceID, nsAtom* aAttribute,

                            int32_t aModType) override;

  nscoord GetMinISize(gfxContext* aRenderingContext) override;

  nscoord GetPrefISize(gfxContext* aRenderingContext) override;

/**

   * Returns whether the frame and its child should use the native style.

*/

  bool ShouldUseNativeStyle() const;

 protected:

  // Helper function which reflow the anonymous div frame.

  void ReflowBarFrame(nsIFrame* aBarFrame, nsPresContext* aPresContext,

                      const ReflowInput& aReflowInput,

                      const mozilla::LogicalSize& aParentContentBoxSize,

                      nsReflowStatus& aStatus);

/**

   * The div used to show the meter bar.

   * @see nsMeterFrame::CreateAnonymousContent

*/

  nsCOMPtr<Element> mBarDiv;

};

#endif