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       1             : /* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
       2             : /* This Source Code Form is subject to the terms of the Mozilla Public
       3             :  * License, v. 2.0. If a copy of the MPL was not distributed with this
       4             :  * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
       5             : 
       6             : #ifndef nsMeterFrame_h___
       7             : #define nsMeterFrame_h___
       8             : 
       9             : #include "mozilla/Attributes.h"
      10             : #include "nsContainerFrame.h"
      11             : #include "nsIAnonymousContentCreator.h"
      12             : #include "nsCOMPtr.h"
      13             : #include "nsCSSPseudoElements.h"
      14             : 
      15             : class nsMeterFrame : public nsContainerFrame,
      16             :                      public nsIAnonymousContentCreator
      17             : 
      18             : {
      19             :   typedef mozilla::dom::Element Element;
      20             : 
      21             : public:
      22             :   NS_DECL_QUERYFRAME
      23           0 :   NS_DECL_FRAMEARENA_HELPERS(nsMeterFrame)
      24             : 
      25             :   explicit nsMeterFrame(nsStyleContext* aContext);
      26             :   virtual ~nsMeterFrame();
      27             : 
      28             :   virtual void DestroyFrom(nsIFrame* aDestructRoot) override;
      29             : 
      30             :   virtual void Reflow(nsPresContext*           aCX,
      31             :                       ReflowOutput&     aDesiredSize,
      32             :                       const ReflowInput& aReflowInput,
      33             :                       nsReflowStatus&          aStatus) override;
      34             : 
      35             : #ifdef DEBUG_FRAME_DUMP
      36           0 :   virtual nsresult GetFrameName(nsAString& aResult) const override {
      37           0 :     return MakeFrameName(NS_LITERAL_STRING("Meter"), aResult);
      38             :   }
      39             : #endif
      40             : 
      41             :   // nsIAnonymousContentCreator
      42             :   virtual nsresult CreateAnonymousContent(nsTArray<ContentInfo>& aElements) override;
      43             :   virtual void AppendAnonymousContentTo(nsTArray<nsIContent*>& aElements,
      44             :                                         uint32_t aFilter) override;
      45             : 
      46             :   virtual nsresult AttributeChanged(int32_t  aNameSpaceID,
      47             :                                     nsIAtom* aAttribute,
      48             :                                     int32_t  aModType) override;
      49             : 
      50             :   virtual mozilla::LogicalSize
      51             :   ComputeAutoSize(gfxContext*                 aRenderingContext,
      52             :                   mozilla::WritingMode        aWM,
      53             :                   const mozilla::LogicalSize& aCBSize,
      54             :                   nscoord                     aAvailableISize,
      55             :                   const mozilla::LogicalSize& aMargin,
      56             :                   const mozilla::LogicalSize& aBorder,
      57             :                   const mozilla::LogicalSize& aPadding,
      58             :                   ComputeSizeFlags            aFlags) override;
      59             : 
      60             :   virtual nscoord GetMinISize(gfxContext *aRenderingContext) override;
      61             :   virtual nscoord GetPrefISize(gfxContext *aRenderingContext) override;
      62             : 
      63           0 :   virtual bool IsFrameOfType(uint32_t aFlags) const override
      64             :   {
      65           0 :     return nsContainerFrame::IsFrameOfType(aFlags &
      66           0 :       ~(nsIFrame::eReplaced | nsIFrame::eReplacedContainsBlock));
      67             :   }
      68             : 
      69             :   /**
      70             :    * Returns whether the frame and its child should use the native style.
      71             :    */
      72             :   bool ShouldUseNativeStyle() const;
      73             : 
      74             :   virtual Element* GetPseudoElement(mozilla::CSSPseudoElementType aType) override;
      75             : 
      76             : protected:
      77             :   // Helper function which reflow the anonymous div frame.
      78             :   void ReflowBarFrame(nsIFrame*                aBarFrame,
      79             :                       nsPresContext*           aPresContext,
      80             :                       const ReflowInput& aReflowInput,
      81             :                       nsReflowStatus&          aStatus);
      82             :   /**
      83             :    * The div used to show the meter bar.
      84             :    * @see nsMeterFrame::CreateAnonymousContent
      85             :    */
      86             :   nsCOMPtr<Element> mBarDiv;
      87             : };
      88             : 
      89             : #endif