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   void BuildDisplayList(nsDisplayListBuilder* aBuilder,
  31                         const nsDisplayListSet& aLists) override;
  32
  33   nscoord GetMinISize(gfxContext* aRenderingContext) override;
  34
  35   nscoord GetPrefISize(gfxContext* aRenderingContext) override;
  36
  37   void Reflow(nsPresContext* aPresContext, ReflowOutput& aDesiredSize,
  38               const ReflowInput& aReflowInput,
  39               nsReflowStatus& aStatus) override;
  40
  41   Maybe<nscoord> GetNaturalBaselineBOffset(
  42       mozilla::WritingMode aWM, BaselineSharingGroup aBaselineGroup,
  43       BaselineExportContext aExportContext) const override;
  44
  45   nsresult HandleEvent(nsPresContext* aPresContext,
  46                        mozilla::WidgetGUIEvent* aEvent,
  47                        nsEventStatus* aEventStatus) override;
  48
  49   void Init(nsIContent* aContent, nsContainerFrame* aParent,
  50             nsIFrame* aPrevInFlow) override;
  51
  52   ComputedStyle* GetAdditionalComputedStyle(int32_t aIndex) const override;
  53   void SetAdditionalComputedStyle(int32_t aIndex,
  54                                   ComputedStyle* aComputedStyle) override;
  55
  56 #ifdef DEBUG
  57   void AppendFrames(ChildListID aListID, nsFrameList&& aFrameList) override;
  58   void InsertFrames(ChildListID aListID, nsIFrame* aPrevFrame,
  59                     const nsLineList::iterator* aPrevFrameLine,
  60                     nsFrameList&& aFrameList) override;
  61   void RemoveFrame(DestroyContext&, ChildListID, nsIFrame*) override;
  62 #endif
  63
  64 #ifdef ACCESSIBILITY
  65   mozilla::a11y::AccType AccessibleType() override;
  66 #endif
  67
  68 #ifdef DEBUG_FRAME_DUMP
  69   nsresult GetFrameName(nsAString& aResult) const override {
  70     return MakeFrameName(u"HTMLButtonControl"_ns, aResult);
  71   }
  72 #endif
  73
  74   // nsIFormControlFrame
  75   void SetFocus(bool aOn, bool aRepaint) override;
  76   nsresult SetFormProperty(nsAtom* aName, const nsAString& aValue) override;
  77
  78   // Inserted child content gets its frames parented by our child block
  79   nsContainerFrame* GetContentInsertionFrame() override {
  80     return PrincipalChildList().FirstChild()->GetContentInsertionFrame();
  81   }
  82
  83   // Return the ::-moz-button-content anonymous box.
  84   void AppendDirectlyOwnedAnonBoxes(nsTArray<OwnedAnonBox>& aResult) override;
  85
  86  protected:
  87   nsHTMLButtonControlFrame(ComputedStyle* aStyle, nsPresContext* aPresContext,
  88                            nsIFrame::ClassID aID);
  89
  90   // Indicates whether we should clip our children's painting to our
  91   // border-box (either because of "overflow" or because of legacy reasons
  92   // about how <input>-flavored buttons work).
  93   bool ShouldClipPaintingToBorderBox();
  94
  95   // Reflows the button's sole child frame, and computes the desired size
  96   // of the button itself from the results.
  97   void ReflowButtonContents(nsPresContext* aPresContext,
  98                             ReflowOutput& aButtonDesiredSize,
  99                             const ReflowInput& aButtonReflowInput,
 100                             nsIFrame* aFirstKid);
 101
 102   BaselineSharingGroup GetDefaultBaselineSharingGroup() const override;
 103   nscoord SynthesizeFallbackBaseline(
 104       mozilla::WritingMode aWM,
 105       BaselineSharingGroup aBaselineGroup) const override;
 106
 107   nsButtonFrameRenderer mRenderer;
 108 };
 109
 110 #endif