Masayuki Nakano
b77593c2f7
Most event targets an element node even if the input occurs on a `Text`. `EventStateManager`, `PresShell`, `PresShell::EventHandler`, etc use the result of `nsIFrame::GetContentForEvent` result as-is or looking for proper ancestor element by the caller selves. So, I think there should be `GetEventTargetContent()` which solves the target node kind automatically and in the same way. And also this patch renames `nsIFrame::GetContentForEvent` to `nsIFrame::GetEventTargetExplicitContent` for consistency with `Event::mExplicitOriginalTarget`. Finally, this patch changes the callers which retrieves a parent `Element` if the result of `GetContentForEvent` is not an `Element` to use the new `GetEventTargetContent`. The following patches make each caller of `GetContentForEvent` marked with "FIXME" comment fix one by one. Differential Revision: https://phabricator.services.mozilla.com/D297848
105 lines
3.6 KiB
C++
105 lines
3.6 KiB
C++
/* This Source Code Form is subject to the terms of the Mozilla Public
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* License, v. 2.0. If a copy of the MPL was not distributed with this
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* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
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/* rendering object that goes directly inside the document's scrollbars */
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#ifndef nsCanvasFrame_h_
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#define nsCanvasFrame_h_
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#include "mozilla/EventForwards.h"
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#include "nsContainerFrame.h"
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#include "nsDisplayList.h"
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#include "nsIAnonymousContentCreator.h"
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#include "nsIPopupContainer.h"
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class nsPresContext;
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class gfxContext;
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/**
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* Root frame class.
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*
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* The root frame is the parent frame for the document element's frame.
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* It only supports having a single child frame which must be an area
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* frame.
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* @note nsCanvasFrame keeps overflow container continuations of its child
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* frame in the main child list.
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*/
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class nsCanvasFrame final : public nsContainerFrame,
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public nsIAnonymousContentCreator,
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public nsIPopupContainer {
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using Element = mozilla::dom::Element;
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public:
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explicit nsCanvasFrame(ComputedStyle* aStyle, nsPresContext* aPresContext)
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: nsContainerFrame(aStyle, aPresContext, kClassID) {}
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NS_DECL_QUERYFRAME
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NS_DECL_FRAMEARENA_HELPERS(nsCanvasFrame)
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Element* GetDefaultTooltip() override;
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void Destroy(DestroyContext&) override;
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void SetInitialChildList(ChildListID aListID,
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nsFrameList&& aChildList) override;
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void AppendFrames(ChildListID aListID, nsFrameList&& aFrameList) override;
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void InsertFrames(ChildListID aListID, nsIFrame* aPrevFrame,
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const nsLineList::iterator* aPrevFrameLine,
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nsFrameList&& aFrameList) override;
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#ifdef DEBUG
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void RemoveFrame(DestroyContext&, ChildListID, nsIFrame*) override;
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#endif
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nscoord IntrinsicISize(const mozilla::IntrinsicSizeInput& aInput,
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mozilla::IntrinsicISizeType aType) override;
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void Reflow(nsPresContext* aPresContext, ReflowOutput& aDesiredSize,
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const ReflowInput& aReflowInput,
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nsReflowStatus& aStatus) override;
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// nsIAnonymousContentCreator
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nsresult CreateAnonymousContent(nsTArray<ContentInfo>& aElements) override;
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void AppendAnonymousContentTo(nsTArray<nsIContent*>& aElements,
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uint32_t aFilter) override;
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void BuildDisplayList(nsDisplayListBuilder* aBuilder,
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const nsDisplayListSet& aLists) override;
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#ifdef DEBUG_FRAME_DUMP
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nsresult GetFrameName(nsAString& aResult) const override;
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#endif
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nsIContent* GetExplicitEventTargetContent(
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const mozilla::WidgetEvent* = nullptr) const final;
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using nsIFrame::GetExplicitEventTargetContent;
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nsRect CanvasArea() const;
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protected:
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nsCOMPtr<Element> mTooltipContent;
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};
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namespace mozilla {
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class nsDisplayCanvasBackgroundImage final : public nsDisplayBackgroundImage {
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public:
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explicit nsDisplayCanvasBackgroundImage(nsDisplayListBuilder* aBuilder,
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nsIFrame* aFrame,
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const InitData& aInitData)
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: nsDisplayBackgroundImage(aBuilder, aFrame, aInitData) {}
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void Paint(nsDisplayListBuilder* aBuilder, gfxContext* aCtx) override;
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// We still need to paint a background color as well as an image for this
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// item, so we can't support this yet.
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bool SupportsOptimizingToImage() const override { return false; }
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bool IsSingleFixedPositionImage(nsDisplayListBuilder* aBuilder,
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const nsRect& aClipRect, gfxRect* aDestRect);
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NS_DISPLAY_DECL_NAME("CanvasBackgroundImage", TYPE_CANVAS_BACKGROUND_IMAGE)
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};
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} // namespace mozilla
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#endif /* nsCanvasFrame_h_ */
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