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Diffstat (limited to 'layout/forms/nsFieldSetFrame.h')
-rw-r--r-- | layout/forms/nsFieldSetFrame.h | 116 |
1 files changed, 116 insertions, 0 deletions
diff --git a/layout/forms/nsFieldSetFrame.h b/layout/forms/nsFieldSetFrame.h new file mode 100644 index 0000000000..84f05a5eea --- /dev/null +++ b/layout/forms/nsFieldSetFrame.h @@ -0,0 +1,116 @@ +/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */ +/* vim: set ts=8 sts=2 et sw=2 tw=80: */ +/* This Source Code Form is subject to the terms of the Mozilla Public + * License, v. 2.0. If a copy of the MPL was not distributed with this + * file, You can obtain one at http://mozilla.org/MPL/2.0/. */ + +#ifndef nsFieldSetFrame_h___ +#define nsFieldSetFrame_h___ + +#include "mozilla/Attributes.h" +#include "ImgDrawResult.h" +#include "nsContainerFrame.h" +#include "nsIScrollableFrame.h" + +class nsFieldSetFrame final : public nsContainerFrame { + typedef mozilla::image::ImgDrawResult ImgDrawResult; + + public: + NS_DECL_FRAMEARENA_HELPERS(nsFieldSetFrame) + NS_DECL_QUERYFRAME + + explicit nsFieldSetFrame(ComputedStyle* aStyle, nsPresContext* aPresContext); + + nscoord GetIntrinsicISize(gfxContext* aRenderingContext, + mozilla::IntrinsicISizeType); + virtual nscoord GetMinISize(gfxContext* aRenderingContext) override; + virtual nscoord GetPrefISize(gfxContext* aRenderingContext) override; + + /** + * The area to paint box-shadows around. It's the border rect except + * when there's a <legend> we offset the y-position to the center of it. + */ + virtual nsRect VisualBorderRectRelativeToSelf() const override; + + virtual void Reflow(nsPresContext* aPresContext, ReflowOutput& aDesiredSize, + const ReflowInput& aReflowInput, + nsReflowStatus& aStatus) override; + + nscoord GetLogicalBaseline(mozilla::WritingMode aWM) const override; + bool GetVerticalAlignBaseline(mozilla::WritingMode aWM, + nscoord* aBaseline) const override; + bool GetNaturalBaselineBOffset(mozilla::WritingMode aWM, + BaselineSharingGroup aBaselineGroup, + nscoord* aBaseline) const override; + + virtual void BuildDisplayList(nsDisplayListBuilder* aBuilder, + const nsDisplayListSet& aLists) override; + + ImgDrawResult PaintBorder(nsDisplayListBuilder* aBuilder, + gfxContext& aRenderingContext, nsPoint aPt, + const nsRect& aDirtyRect); + + void SetInitialChildList(ChildListID aListID, + nsFrameList&& aChildList) override; + void AppendFrames(ChildListID aListID, nsFrameList&& aFrameList) override; + void InsertFrames(ChildListID aListID, nsIFrame* aPrevFrame, + const nsLineList::iterator* aPrevFrameLine, + nsFrameList&& aFrameList) override; +#ifdef DEBUG + virtual void RemoveFrame(ChildListID aListID, nsIFrame* aOldFrame) override; +#endif + + virtual bool IsFrameOfType(uint32_t aFlags) const override { + return nsContainerFrame::IsFrameOfType( + aFlags & ~nsIFrame::eCanContainOverflowContainers); + } + nsIScrollableFrame* GetScrollTargetFrame() const override; + + // Return the block wrapper around our kids. + void AppendDirectlyOwnedAnonBoxes(nsTArray<OwnedAnonBox>& aResult) override; + +#ifdef ACCESSIBILITY + virtual mozilla::a11y::AccType AccessibleType() override; +#endif + +#ifdef DEBUG_FRAME_DUMP + virtual nsresult GetFrameName(nsAString& aResult) const override { + return MakeFrameName(u"FieldSet"_ns, aResult); + } +#endif + + /** + * Return the anonymous frame that contains all descendants except the legend + * frame. This can be a block/grid/flex/scroll frame. It always has + * the pseudo type nsCSSAnonBoxes::fieldsetContent. If it's a scroll frame, + * the scrolled frame can be a block/grid/flex frame. + * This may return null, for example for a fieldset that is a true overflow + * container. + */ + nsContainerFrame* GetInner() const; + + /** + * Return the frame that represents the rendered legend if any. + * https://html.spec.whatwg.org/multipage/rendering.html#rendered-legend + */ + nsIFrame* GetLegend() const; + + /** @see mLegendSpace below */ + nscoord LegendSpace() const { return mLegendSpace; } + + protected: + /** + * Convenience method to create a continuation for aChild after we've + * reflowed it and got the reflow status aStatus. + */ + void EnsureChildContinuation(nsIFrame* aChild, const nsReflowStatus& aStatus); + + mozilla::LogicalRect mLegendRect; + + // This is how much to subtract from our inner frame's content-box block-size + // to account for a protruding legend. It's zero if there's no legend or + // the legend fits entirely inside our start border. + nscoord mLegendSpace; +}; + +#endif // nsFieldSetFrame_h___ |