layout/forms/nsHTMLButtonControlFrame.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
   7 #ifndef nsHTMLButtonControlFrame_h___
   8 #define nsHTMLButtonControlFrame_h___
   9
  10 #include "mozilla/Attributes.h"
  11 #include "nsContainerFrame.h"
  12 #include "nsIFormControlFrame.h"
  13 #include "nsButtonFrameRenderer.h"
  14
  15 class gfxContext;
  16 class nsPresContext;
  17
  18 class nsHTMLButtonControlFrame : public nsContainerFrame,
  19                                  public nsIFormControlFrame {
  20  public:
  21   explicit nsHTMLButtonControlFrame(ComputedStyle* aStyle,
  22                                     nsPresContext* aPresContext)
  23       : nsHTMLButtonControlFrame(aStyle, aPresContext, kClassID) {}
  24
  25   ~nsHTMLButtonControlFrame();
  26
  27   NS_DECL_QUERYFRAME
  28   NS_DECL_FRAMEARENA_HELPERS(nsHTMLButtonControlFrame)
  29
  30   virtual void BuildDisplayList(nsDisplayListBuilder* aBuilder,
  31                                 const nsDisplayListSet& aLists) override;
  32
  33   virtual nscoord GetMinISize(gfxContext* aRenderingContext) override;
  34
  35   virtual nscoord GetPrefISize(gfxContext* aRenderingContext) override;
  36
  37   virtual void Reflow(nsPresContext* aPresContext, ReflowOutput& aDesiredSize,
  38                       const ReflowInput& aReflowInput,
  39                       nsReflowStatus& aStatus) override;
  40
  41   bool GetVerticalAlignBaseline(mozilla::WritingMode aWM,
  42                                 nscoord* aBaseline) const override;
  43
  44   bool GetNaturalBaselineBOffset(mozilla::WritingMode aWM,
  45                                  BaselineSharingGroup aBaselineGroup,
  46                                  nscoord* aBaseline) const override;
  47
  48   virtual nsresult HandleEvent(nsPresContext* aPresContext,
  49                                mozilla::WidgetGUIEvent* aEvent,
  50                                nsEventStatus* aEventStatus) override;
  51
  52   virtual void Init(nsIContent* aContent, nsContainerFrame* aParent,
  53                     nsIFrame* aPrevInFlow) override;
  54
  55   ComputedStyle* GetAdditionalComputedStyle(int32_t aIndex) const override;
  56   void SetAdditionalComputedStyle(int32_t aIndex,
  57                                   ComputedStyle* aComputedStyle) override;
  58
  59 #ifdef DEBUG
  60   virtual void AppendFrames(ChildListID aListID,
  61                             nsFrameList& aFrameList) override;
  62   virtual void InsertFrames(ChildListID aListID, nsIFrame* aPrevFrame,
  63                             const nsLineList::iterator* aPrevFrameLine,
  64                             nsFrameList& aFrameList) override;
  65   virtual void RemoveFrame(ChildListID aListID, nsIFrame* aOldFrame) override;
  66 #endif
  67
  68 #ifdef ACCESSIBILITY
  69   virtual mozilla::a11y::AccType AccessibleType() override;
  70 #endif
  71
  72 #ifdef DEBUG_FRAME_DUMP
  73   virtual nsresult GetFrameName(nsAString& aResult) const override {
  74     return MakeFrameName(u"HTMLButtonControl"_ns, aResult);
  75   }
  76 #endif
  77
  78   virtual bool HonorPrintBackgroundSettings() const override { return false; }
  79
  80   // nsIFormControlFrame
  81   void SetFocus(bool aOn, bool aRepaint) override;
  82   virtual nsresult SetFormProperty(nsAtom* aName,
  83                                    const nsAString& aValue) override;
  84
  85   // Inserted child content gets its frames parented by our child block
  86   virtual nsContainerFrame* GetContentInsertionFrame() override {
  87     return PrincipalChildList().FirstChild()->GetContentInsertionFrame();
  88   }
  89
  90   virtual bool IsFrameOfType(uint32_t aFlags) const override {
  91     return nsContainerFrame::IsFrameOfType(
  92         aFlags & ~(nsIFrame::eReplaced | nsIFrame::eReplacedContainsBlock));
  93   }
  94
  95   // Return the ::-moz-button-content anonymous box.
  96   void AppendDirectlyOwnedAnonBoxes(nsTArray<OwnedAnonBox>& aResult) override;
  97
  98  protected:
  99   nsHTMLButtonControlFrame(ComputedStyle* aStyle, nsPresContext* aPresContext,
 100                            nsIFrame::ClassID aID);
 101
 102   virtual bool IsInput() { return false; }
 103
 104   // Indicates whether we should clip our children's painting to our
 105   // border-box (either because of "overflow" or because of legacy reasons
 106   // about how <input>-flavored buttons work).
 107   bool ShouldClipPaintingToBorderBox();
 108
 109   // Reflows the button's sole child frame, and computes the desired size
 110   // of the button itself from the results.
 111   void ReflowButtonContents(nsPresContext* aPresContext,
 112                             ReflowOutput& aButtonDesiredSize,
 113                             const ReflowInput& aButtonReflowInput,
 114                             nsIFrame* aFirstKid);
 115
 116   nsButtonFrameRenderer mRenderer;
 117 };
 118
 119 #endif