layout/forms/nsMeterFrame.h

   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
  14 class nsMeterFrame : public nsContainerFrame,
  15                      public nsIAnonymousContentCreator
  16
  17 {
  18   typedef mozilla::dom::Element Element;
  19
  20 public:
  21   NS_DECL_QUERYFRAME_TARGET(nsMeterFrame)
  22   NS_DECL_QUERYFRAME
  23   NS_DECL_FRAMEARENA_HELPERS
  24
  25   explicit nsMeterFrame(nsStyleContext* aContext);
  26   virtual ~nsMeterFrame();
  27
  28   virtual void DestroyFrom(nsIFrame* aDestructRoot) MOZ_OVERRIDE;
  29
  30   virtual void Reflow(nsPresContext*           aCX,
  31                       nsHTMLReflowMetrics&     aDesiredSize,
  32                       const nsHTMLReflowState& aReflowState,
  33                       nsReflowStatus&          aStatus) MOZ_OVERRIDE;
  34
  35 #ifdef DEBUG_FRAME_DUMP
  36   virtual nsresult GetFrameName(nsAString& aResult) const MOZ_OVERRIDE {
  37     return MakeFrameName(NS_LITERAL_STRING("Meter"), aResult);
  38   }
  39 #endif
  40
  41   virtual bool IsLeaf() const MOZ_OVERRIDE { return true; }
  42
  43   // nsIAnonymousContentCreator
  44   virtual nsresult CreateAnonymousContent(nsTArray<ContentInfo>& aElements) MOZ_OVERRIDE;
  45   virtual void AppendAnonymousContentTo(nsTArray<nsIContent*>& aElements,
  46                                         uint32_t aFilter) MOZ_OVERRIDE;
  47
  48   virtual nsresult AttributeChanged(int32_t  aNameSpaceID,
  49                                     nsIAtom* aAttribute,
  50                                     int32_t  aModType) MOZ_OVERRIDE;
  51
  52   virtual mozilla::LogicalSize
  53   ComputeAutoSize(nsRenderingContext *aRenderingContext,
  54                   mozilla::WritingMode aWritingMode,
  55                   const mozilla::LogicalSize& aCBSize,
  56                   nscoord aAvailableISize,
  57                   const mozilla::LogicalSize& aMargin,
  58                   const mozilla::LogicalSize& aBorder,
  59                   const mozilla::LogicalSize& aPadding,
  60                   bool aShrinkWrap) MOZ_OVERRIDE;
  61
  62   virtual nscoord GetMinISize(nsRenderingContext *aRenderingContext) MOZ_OVERRIDE;
  63   virtual nscoord GetPrefISize(nsRenderingContext *aRenderingContext) MOZ_OVERRIDE;
  64
  65   virtual bool IsFrameOfType(uint32_t aFlags) const MOZ_OVERRIDE
  66   {
  67     return nsContainerFrame::IsFrameOfType(aFlags &
  68       ~(nsIFrame::eReplaced | nsIFrame::eReplacedContainsBlock));
  69   }
  70
  71   /**
  72    * Returns whether the frame and its child should use the native style.
  73    */
  74   bool ShouldUseNativeStyle() const;
  75
  76   virtual Element* GetPseudoElement(nsCSSPseudoElements::Type aType) MOZ_OVERRIDE;
  77
  78 protected:
  79   // Helper function which reflow the anonymous div frame.
  80   void ReflowBarFrame(nsIFrame*                aBarFrame,
  81                       nsPresContext*           aPresContext,
  82                       const nsHTMLReflowState& aReflowState,
  83                       nsReflowStatus&          aStatus);
  84   /**
  85    * The div used to show the meter bar.
  86    * @see nsMeterFrame::CreateAnonymousContent
  87    */
  88   nsCOMPtr<Element> mBarDiv;
  89 };
  90
  91 #endif