layout/xul/nsLeafBoxFrame.h

   1 /* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
   2 /* vim: set ts=8 sts=2 et sw=2 tw=80: */
   3 /* This Source Code Form is subject to the terms of the Mozilla Public
   4  * License, v. 2.0. If a copy of the MPL was not distributed with this
   5  * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
   6 #ifndef nsLeafBoxFrame_h___
   7 #define nsLeafBoxFrame_h___
   8
   9 #include "mozilla/Attributes.h"
  10 #include "nsLeafFrame.h"
  11 #include "nsBox.h"
  12
  13 namespace mozilla {
  14 class PresShell;
  15 }  // namespace mozilla
  16
  17 class nsLeafBoxFrame : public nsLeafFrame {
  18  public:
  19   NS_DECL_FRAMEARENA_HELPERS(nsLeafBoxFrame)
  20
  21   friend nsIFrame* NS_NewLeafBoxFrame(mozilla::PresShell* aPresShell,
  22                                       ComputedStyle* aStyle);
  23
  24   virtual nsSize GetXULPrefSize(nsBoxLayoutState& aState) override;
  25   virtual nsSize GetXULMinSize(nsBoxLayoutState& aState) override;
  26   virtual nsSize GetXULMaxSize(nsBoxLayoutState& aState) override;
  27   virtual nscoord GetXULFlex() override;
  28   virtual nscoord GetXULBoxAscent(nsBoxLayoutState& aState) override;
  29
  30   virtual bool IsFrameOfType(uint32_t aFlags) const override {
  31     // This is bogus, but it's what we've always done.
  32     // Note that nsLeafFrame is also eReplacedContainsBlock.
  33     return nsLeafFrame::IsFrameOfType(
  34         aFlags & ~(nsIFrame::eReplaced | nsIFrame::eReplacedContainsBlock |
  35                    nsIFrame::eXULBox));
  36   }
  37
  38 #ifdef DEBUG_FRAME_DUMP
  39   virtual nsresult GetFrameName(nsAString& aResult) const override;
  40 #endif
  41
  42   // nsIHTMLReflow overrides
  43
  44   virtual nscoord GetMinISize(gfxContext* aRenderingContext) override;
  45   virtual nscoord GetPrefISize(gfxContext* aRenderingContext) override;
  46
  47   // Our auto size is that provided by nsFrame, not nsLeafFrame
  48   virtual mozilla::LogicalSize ComputeAutoSize(
  49       gfxContext* aRenderingContext, mozilla::WritingMode aWM,
  50       const mozilla::LogicalSize& aCBSize, nscoord aAvailableISize,
  51       const mozilla::LogicalSize& aMargin, const mozilla::LogicalSize& aBorder,
  52       const mozilla::LogicalSize& aPadding, ComputeSizeFlags aFlags) override;
  53
  54   virtual void Reflow(nsPresContext* aPresContext, ReflowOutput& aDesiredSize,
  55                       const ReflowInput& aReflowInput,
  56                       nsReflowStatus& aStatus) override;
  57
  58   virtual nsresult CharacterDataChanged(
  59       const CharacterDataChangeInfo&) override;
  60
  61   virtual void Init(nsIContent* aContent, nsContainerFrame* aParent,
  62                     nsIFrame* asPrevInFlow) override;
  63
  64   virtual void BuildDisplayList(nsDisplayListBuilder* aBuilder,
  65                                 const nsDisplayListSet& aLists) override;
  66
  67   virtual nsresult AttributeChanged(int32_t aNameSpaceID, nsAtom* aAttribute,
  68                                     int32_t aModType) override;
  69
  70   virtual bool ComputesOwnOverflowArea() override { return false; }
  71
  72  protected:
  73   NS_IMETHOD DoXULLayout(nsBoxLayoutState& aState) override;
  74
  75   virtual nscoord GetIntrinsicISize() override;
  76
  77   explicit nsLeafBoxFrame(ComputedStyle* aStyle, nsPresContext* aPresContext,
  78                           ClassID aID = kClassID)
  79       : nsLeafFrame(aStyle, aPresContext, aID) {}
  80
  81  private:
  82   void UpdateMouseThrough();
  83
  84 };  // class nsLeafBoxFrame
  85
  86 #endif /* nsLeafBoxFrame_h___ */