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-rw-r--r--layout/generic/nsSubDocumentFrame.h244
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diff --git a/layout/generic/nsSubDocumentFrame.h b/layout/generic/nsSubDocumentFrame.h
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+/* -*- 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 NSSUBDOCUMENTFRAME_H_
+#define NSSUBDOCUMENTFRAME_H_
+
+#include "mozilla/Attributes.h"
+#include "nsDisplayList.h"
+#include "nsAtomicContainerFrame.h"
+#include "nsIReflowCallback.h"
+#include "nsFrameLoader.h"
+#include "Units.h"
+
+namespace mozilla {
+class PresShell;
+} // namespace mozilla
+
+namespace mozilla::layers {
+class Layer;
+class RenderRootStateManager;
+class WebRenderLayerScrollData;
+class WebRenderScrollData;
+} // namespace mozilla::layers
+
+/******************************************************************************
+ * nsSubDocumentFrame
+ *****************************************************************************/
+class nsSubDocumentFrame final : public nsAtomicContainerFrame,
+ public nsIReflowCallback {
+ public:
+ NS_DECL_FRAMEARENA_HELPERS(nsSubDocumentFrame)
+
+ explicit nsSubDocumentFrame(ComputedStyle* aStyle,
+ nsPresContext* aPresContext);
+
+#ifdef DEBUG_FRAME_DUMP
+ void List(FILE* out = stderr, const char* aPrefix = "",
+ ListFlags aFlags = ListFlags()) const override;
+ nsresult GetFrameName(nsAString& aResult) const override;
+#endif
+
+ NS_DECL_QUERYFRAME
+
+ bool IsFrameOfType(uint32_t aFlags) const override {
+ return nsAtomicContainerFrame::IsFrameOfType(
+ aFlags & ~(nsIFrame::eReplaced | nsIFrame::eReplacedSizing |
+ nsIFrame::eReplacedContainsBlock));
+ }
+
+ void Init(nsIContent* aContent, nsContainerFrame* aParent,
+ nsIFrame* aPrevInFlow) override;
+
+ void Destroy(DestroyContext&) override;
+
+ nscoord GetMinISize(gfxContext* aRenderingContext) override;
+ nscoord GetPrefISize(gfxContext* aRenderingContext) override;
+
+ mozilla::IntrinsicSize GetIntrinsicSize() override;
+ mozilla::AspectRatio GetIntrinsicRatio() const override;
+
+ mozilla::LogicalSize ComputeAutoSize(
+ gfxContext* aRenderingContext, mozilla::WritingMode aWritingMode,
+ const mozilla::LogicalSize& aCBSize, nscoord aAvailableISize,
+ const mozilla::LogicalSize& aMargin,
+ const mozilla::LogicalSize& aBorderPadding,
+ const mozilla::StyleSizeOverrides& aSizeOverrides,
+ mozilla::ComputeSizeFlags aFlags) override;
+
+ SizeComputationResult ComputeSize(
+ gfxContext* aRenderingContext, mozilla::WritingMode aWM,
+ const mozilla::LogicalSize& aCBSize, nscoord aAvailableISize,
+ const mozilla::LogicalSize& aMargin,
+ const mozilla::LogicalSize& aBorderPadding,
+ const mozilla::StyleSizeOverrides& aSizeOverrides,
+ mozilla::ComputeSizeFlags aFlags) override;
+
+ void Reflow(nsPresContext* aPresContext, ReflowOutput& aDesiredSize,
+ const ReflowInput& aReflowInput,
+ nsReflowStatus& aStatus) override;
+
+ void BuildDisplayList(nsDisplayListBuilder* aBuilder,
+ const nsDisplayListSet& aLists) override;
+
+ nsresult AttributeChanged(int32_t aNameSpaceID, nsAtom* aAttribute,
+ int32_t aModType) override;
+
+ void DidSetComputedStyle(ComputedStyle* aOldComputedStyle) override;
+
+ // if the content is "visibility:hidden", then just hide the view
+ // and all our contents. We don't extend "visibility:hidden" to
+ // the child content ourselves, since it belongs to a different
+ // document and CSS doesn't inherit in there.
+ bool SupportsVisibilityHidden() override { return false; }
+
+#ifdef ACCESSIBILITY
+ mozilla::a11y::AccType AccessibleType() override;
+#endif
+
+ nsIDocShell* GetDocShell() const;
+ nsresult BeginSwapDocShells(nsIFrame* aOther);
+ void EndSwapDocShells(nsIFrame* aOther);
+ nsView* EnsureInnerView();
+ nsPoint GetExtraOffset() const;
+ nsIFrame* GetSubdocumentRootFrame();
+ enum { IGNORE_PAINT_SUPPRESSION = 0x1 };
+ mozilla::PresShell* GetSubdocumentPresShellForPainting(uint32_t aFlags);
+ nsRect GetDestRect();
+ mozilla::ScreenIntSize GetSubdocumentSize();
+
+ // nsIReflowCallback
+ bool ReflowFinished() override;
+ void ReflowCallbackCanceled() override;
+
+ /**
+ * Return true if pointer event hit-testing should be allowed to target
+ * content in the subdocument.
+ */
+ bool PassPointerEventsToChildren();
+
+ void MaybeShowViewer() {
+ if (!mDidCreateDoc && !mCallingShow) {
+ ShowViewer();
+ }
+ }
+
+ nsFrameLoader* FrameLoader() const;
+
+ enum class RetainPaintData : bool { No, Yes };
+ void ResetFrameLoader(RetainPaintData);
+ void ClearRetainedPaintData();
+
+ void MaybeUpdateEmbedderColorScheme();
+
+ void MaybeUpdateRemoteStyle(ComputedStyle* aOldComputedStyle = nullptr);
+ void PropagateIsUnderHiddenEmbedderElementToSubView(
+ bool aIsUnderHiddenEmbedderElement);
+
+ void ClearDisplayItems();
+
+ void SubdocumentIntrinsicSizeOrRatioChanged();
+
+ struct RemoteFramePaintData {
+ mozilla::layers::LayersId mLayersId;
+ mozilla::dom::TabId mTabId{0};
+ };
+
+ RemoteFramePaintData GetRemotePaintData() const;
+ bool HasRetainedPaintData() const { return mRetainedRemoteFrame.isSome(); }
+
+ protected:
+ friend class AsyncFrameInit;
+
+ bool IsInline() { return mIsInline; }
+
+ nscoord GetIntrinsicBSize() {
+ auto size = GetIntrinsicSize();
+ Maybe<nscoord> bSize =
+ GetWritingMode().IsVertical() ? size.width : size.height;
+ return bSize.valueOr(0);
+ }
+
+ nscoord GetIntrinsicISize() {
+ if (Maybe<nscoord> containISize = ContainIntrinsicISize()) {
+ return *containISize;
+ }
+ auto size = GetIntrinsicSize();
+ Maybe<nscoord> iSize =
+ GetWritingMode().IsVertical() ? size.height : size.width;
+ return iSize.valueOr(0);
+ }
+
+ // Show our document viewer. The document viewer is hidden via a script
+ // runner, so that we can save and restore the presentation if we're
+ // being reframed.
+ void ShowViewer();
+
+ nsView* GetViewInternal() const override { return mOuterView; }
+ void SetViewInternal(nsView* aView) override { mOuterView = aView; }
+
+ mutable RefPtr<nsFrameLoader> mFrameLoader;
+
+ nsView* mOuterView;
+ nsView* mInnerView;
+
+ // When process-switching a remote tab, we might temporarily paint the old
+ // one.
+ Maybe<RemoteFramePaintData> mRetainedRemoteFrame;
+
+ bool mIsInline : 1;
+ bool mPostedReflowCallback : 1;
+ bool mDidCreateDoc : 1;
+ bool mCallingShow : 1;
+ bool mIsInObjectOrEmbed : 1;
+};
+
+namespace mozilla {
+
+/**
+ * A nsDisplayRemote will graft a remote frame's shadow layer tree (for a given
+ * nsFrameLoader) into its parent frame's layer tree.
+ */
+class nsDisplayRemote final : public nsPaintedDisplayItem {
+ typedef mozilla::dom::TabId TabId;
+ typedef mozilla::gfx::Matrix4x4 Matrix4x4;
+ typedef mozilla::layers::EventRegionsOverride EventRegionsOverride;
+ typedef mozilla::layers::LayersId LayersId;
+ typedef mozilla::layers::StackingContextHelper StackingContextHelper;
+ typedef mozilla::LayoutDeviceRect LayoutDeviceRect;
+ typedef mozilla::LayoutDevicePoint LayoutDevicePoint;
+
+ public:
+ nsDisplayRemote(nsDisplayListBuilder* aBuilder, nsSubDocumentFrame* aFrame);
+
+ void Paint(nsDisplayListBuilder* aBuilder, gfxContext* aCtx) override;
+
+ bool CreateWebRenderCommands(
+ mozilla::wr::DisplayListBuilder& aBuilder,
+ mozilla::wr::IpcResourceUpdateQueue& aResources,
+ const StackingContextHelper& aSc,
+ mozilla::layers::RenderRootStateManager* aManager,
+ nsDisplayListBuilder* aDisplayListBuilder) override;
+ bool UpdateScrollData(
+ mozilla::layers::WebRenderScrollData* aData,
+ mozilla::layers::WebRenderLayerScrollData* aLayerData) override;
+
+ NS_DISPLAY_DECL_NAME("Remote", TYPE_REMOTE)
+
+ private:
+ friend class nsDisplayItem;
+ using RemoteFramePaintData = nsSubDocumentFrame::RemoteFramePaintData;
+
+ nsFrameLoader* GetFrameLoader() const;
+
+ RemoteFramePaintData mPaintData;
+ LayoutDevicePoint mOffset;
+ EventRegionsOverride mEventRegionsOverride;
+};
+
+} // namespace mozilla
+
+#endif /* NSSUBDOCUMENTFRAME_H_ */