Add m-esr52 at 52.6.0

1 files changed, 381 insertions, 0 deletions

diff --git a/layout/generic/nsPluginFrame.h b/layout/generic/nsPluginFrame.h
new file mode 100644
index 000000000..5d9f9f475
--- /dev/null
+++ b/layout/generic/nsPluginFrame.h
@@ -0,0 +1,381 @@
+/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
+/* 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/. */
+
+/* rendering objects for replaced elements implemented by a plugin */
+
+#ifndef nsPluginFrame_h___
+#define nsPluginFrame_h___
+
+#include "mozilla/Attributes.h"
+#include "mozilla/EventForwards.h"
+#include "mozilla/UniquePtr.h"
+#include "nsIObjectFrame.h"
+#include "nsFrame.h"
+#include "nsRegion.h"
+#include "nsDisplayList.h"
+#include "nsIReflowCallback.h"
+#include "Units.h"
+
+#ifdef XP_WIN
+#include <windows.h> // For HWND :(
+// Undo the windows.h damage
+#undef GetMessage
+#undef CreateEvent
+#undef GetClassName
+#undef GetBinaryType
+#undef RemoveDirectory
+#undef LoadIcon
+#undef LoadImage
+#undef GetObject
+#endif
+
+class nsPresContext;
+class nsRootPresContext;
+class nsDisplayPlugin;
+class PluginBackgroundSink;
+class nsPluginInstanceOwner;
+
+namespace mozilla {
+namespace layers {
+class ImageContainer;
+class Layer;
+class LayerManager;
+} // namespace layers
+} // namespace mozilla
+
+class PluginFrameDidCompositeObserver;
+
+class nsPluginFrame : public nsFrame
+                    , public nsIObjectFrame
+                    , public nsIReflowCallback
+{
+public:
+  typedef mozilla::LayerState LayerState;
+  typedef mozilla::LayoutDeviceIntPoint LayoutDeviceIntPoint;
+  typedef mozilla::LayoutDeviceIntRect LayoutDeviceIntRect;
+  typedef mozilla::LayoutDeviceIntRegion LayoutDeviceIntRegion;
+  typedef mozilla::layers::Layer Layer;
+  typedef mozilla::layers::LayerManager LayerManager;
+  typedef mozilla::layers::ImageContainer ImageContainer;
+  typedef mozilla::ContainerLayerParameters ContainerLayerParameters;
+
+  NS_DECL_FRAMEARENA_HELPERS
+
+  friend nsIFrame* NS_NewObjectFrame(nsIPresShell* aPresShell, nsStyleContext* aContext);
+
+  NS_DECL_QUERYFRAME
+  NS_DECL_QUERYFRAME_TARGET(nsPluginFrame)
+
+  virtual void Init(nsIContent*       aContent,
+                    nsContainerFrame* aParent,
+                    nsIFrame*         aPrevInFlow) override;
+  virtual nscoord GetMinISize(nsRenderingContext *aRenderingContext) override;
+  virtual nscoord GetPrefISize(nsRenderingContext *aRenderingContext) override;
+  virtual void Reflow(nsPresContext* aPresContext,
+                      ReflowOutput& aDesiredSize,
+                      const ReflowInput& aReflowInput,
+                      nsReflowStatus& aStatus) override;
+  virtual void DidReflow(nsPresContext* aPresContext,
+                         const ReflowInput* aReflowInput,
+                         nsDidReflowStatus aStatus) override;
+  virtual void BuildDisplayList(nsDisplayListBuilder*   aBuilder,
+                                const nsRect&           aDirtyRect,
+                                const nsDisplayListSet& aLists) override;
+
+  virtual nsresult  HandleEvent(nsPresContext* aPresContext,
+                                mozilla::WidgetGUIEvent* aEvent,
+                                nsEventStatus* aEventStatus) override;
+
+  virtual nsIAtom* GetType() const override;
+
+  virtual bool IsFrameOfType(uint32_t aFlags) const override
+  {
+    return nsFrame::IsFrameOfType(aFlags &
+      ~(nsIFrame::eReplaced | nsIFrame::eReplacedSizing));
+  }
+
+  virtual bool NeedsView() override { return true; }
+
+#ifdef DEBUG_FRAME_DUMP
+  virtual nsresult GetFrameName(nsAString& aResult) const override;
+#endif
+
+  virtual void DestroyFrom(nsIFrame* aDestructRoot) override;
+
+  virtual void DidSetStyleContext(nsStyleContext* aOldStyleContext) override;
+
+  NS_IMETHOD GetPluginInstance(nsNPAPIPluginInstance** aPluginInstance) override;
+
+  virtual void SetIsDocumentActive(bool aIsActive) override;
+
+  virtual nsresult GetCursor(const nsPoint& aPoint, 
+                             nsIFrame::Cursor& aCursor) override;
+
+  // APIs used by nsRootPresContext to set up the widget position/size/clip
+  // region.
+  /**
+   * Set the next widget configuration for the plugin to the desired
+   * position of the plugin's widget, on the assumption that it is not visible
+   * (clipped out or covered by opaque content).
+   * This will only be called for plugins which have been registered
+   * with the root pres context for geometry updates.
+   * If there is no widget associated with the plugin, this will have no effect.
+   */
+  void SetEmptyWidgetConfiguration()
+  {
+    mNextConfigurationBounds = LayoutDeviceIntRect(0,0,0,0);
+    mNextConfigurationClipRegion.Clear();
+  }
+  /**
+   * Append the desired widget configuration to aConfigurations.
+   */
+  void GetWidgetConfiguration(nsTArray<nsIWidget::Configuration>* aConfigurations);
+
+  LayoutDeviceIntRect GetWidgetlessClipRect() {
+    return RegionFromArray(mNextConfigurationClipRegion).GetBounds();
+  }
+
+  /**
+   * Called after all widget position/size/clip regions have been changed
+   * (even if there isn't a widget for this plugin).
+   */
+  void DidSetWidgetGeometry();
+
+  // accessibility support
+#ifdef ACCESSIBILITY
+  virtual mozilla::a11y::AccType AccessibleType() override;
+#ifdef XP_WIN
+  NS_IMETHOD GetPluginPort(HWND *aPort);
+#endif
+#endif
+
+  //local methods
+  nsresult PrepForDrawing(nsIWidget *aWidget);
+
+  // for a given aRoot, this walks the frame tree looking for the next outFrame
+  static nsIObjectFrame* GetNextObjectFrame(nsPresContext* aPresContext,
+                                            nsIFrame* aRoot);
+
+  // nsIReflowCallback
+  virtual bool ReflowFinished() override;
+  virtual void ReflowCallbackCanceled() override;
+
+  /**
+   * Builds either an ImageLayer or a ReadbackLayer, depending on the type
+   * of aItem (TYPE_PLUGIN or TYPE_PLUGIN_READBACK respectively).
+   */
+  already_AddRefed<Layer> BuildLayer(nsDisplayListBuilder* aBuilder,
+                                     LayerManager* aManager,
+                                     nsDisplayItem* aItem,
+                                     const ContainerLayerParameters& aContainerParameters);
+
+  LayerState GetLayerState(nsDisplayListBuilder* aBuilder,
+                           LayerManager* aManager);
+
+  /**
+   * Get the rectangle (relative to this frame) which it will paint. Normally
+   * the frame's content-box but may be smaller if the plugin is rendering
+   * asynchronously and has a different-sized image temporarily.
+   */
+  nsRect GetPaintedRect(nsDisplayPlugin* aItem);
+
+  /**
+   * If aSupports has a nsPluginFrame, then prepare it for a DocShell swap.
+   * @see nsSubDocumentFrame::BeginSwapDocShells.
+   * There will be a call to EndSwapDocShells after we were moved to the
+   * new view tree.
+   */
+  static void BeginSwapDocShells(nsISupports* aSupports, void*);
+  /**
+   * If aSupports has a nsPluginFrame, then set it up after a DocShell swap.
+   * @see nsSubDocumentFrame::EndSwapDocShells.
+   */
+  static void EndSwapDocShells(nsISupports* aSupports, void*);
+
+  nsIWidget* GetWidget() override {
+    if (!mInnerView) {
+      return nullptr;
+    }
+    return mWidget;
+  }
+
+  /**
+   * Adjust the plugin's idea of its size, using aSize as its new size.
+   * (aSize must be in twips)
+   */
+  void FixupWindow(const nsSize& aSize);
+
+  /*
+   * Sets up the plugin window and calls SetWindow on the plugin.
+   */
+  nsresult CallSetWindow(bool aCheckIsHidden = true);
+
+  void SetInstanceOwner(nsPluginInstanceOwner* aOwner);
+
+  /**
+   * HandleWheelEventAsDefaultAction() handles eWheel event as default action.
+   * This should be called only when WantsToHandleWheelEventAsDefaultAction()
+   * returns true.
+   */
+  void HandleWheelEventAsDefaultAction(mozilla::WidgetWheelEvent* aEvent);
+
+  /**
+   * WantsToHandleWheelEventAsDefaultAction() returns true if the plugin
+   * may want to handle wheel events as default action.
+   */
+  bool WantsToHandleWheelEventAsDefaultAction() const;
+
+protected:
+  explicit nsPluginFrame(nsStyleContext* aContext);
+  virtual ~nsPluginFrame();
+
+  // NOTE:  This frame class does not inherit from |nsLeafFrame|, so
+  // this is not a virtual method implementation.
+  void GetDesiredSize(nsPresContext* aPresContext,
+                      const ReflowInput& aReflowInput,
+                      ReflowOutput& aDesiredSize);
+
+  bool IsFocusable(int32_t *aTabIndex = nullptr, 
+                   bool aWithMouse = false) override;
+
+  // check attributes and optionally CSS to see if we should display anything
+  bool IsHidden(bool aCheckVisibilityStyle = true) const;
+
+  bool IsOpaque() const;
+  bool IsTransparentMode() const;
+  bool IsPaintedByGecko() const;
+
+  nsIntPoint GetWindowOriginInPixels(bool aWindowless);
+  
+  /*
+   * If this frame is in a remote tab, return the tab offset to
+   * the origin of the chrome window. In non-e10s, this return 0,0.
+   * This api sends a sync ipc request so be careful about use.
+   */
+  LayoutDeviceIntPoint GetRemoteTabChromeOffset();
+
+  static void PaintPrintPlugin(nsIFrame* aFrame,
+                               nsRenderingContext* aRenderingContext,
+                               const nsRect& aDirtyRect, nsPoint aPt);
+  void PrintPlugin(nsRenderingContext& aRenderingContext,
+                   const nsRect& aDirtyRect);
+  void PaintPlugin(nsDisplayListBuilder* aBuilder,
+                   nsRenderingContext& aRenderingContext,
+                   const nsRect& aDirtyRect, const nsRect& aPluginRect);
+
+  void NotifyPluginReflowObservers();
+
+  friend class nsPluginInstanceOwner;
+  friend class nsDisplayPlugin;
+  friend class PluginBackgroundSink;
+
+private:
+  // Registers the plugin for a geometry update, and requests a geometry
+  // update. This caches the root pres context in
+  // mRootPresContextRegisteredWith, so that we can be sure we unregister
+  // from the right root prest context in UnregisterPluginForGeometryUpdates.
+  void RegisterPluginForGeometryUpdates();
+
+  // Unregisters the plugin for geometry updated with the root pres context
+  // stored in mRootPresContextRegisteredWith.
+  void UnregisterPluginForGeometryUpdates();
+
+  static const LayoutDeviceIntRegion
+  RegionFromArray(const nsTArray<LayoutDeviceIntRect>& aRects)
+  {
+    LayoutDeviceIntRegion region;
+    for (uint32_t i = 0; i < aRects.Length(); ++i) {
+      region.Or(region, aRects[i]);
+    }
+    return region;
+  }
+
+  class PluginEventNotifier : public mozilla::Runnable {
+  public:
+    explicit PluginEventNotifier(const nsString &aEventType) : 
+      mEventType(aEventType) {}
+    
+    NS_IMETHOD Run() override;
+  private:
+    nsString mEventType;
+  };
+
+  nsPluginInstanceOwner*          mInstanceOwner; // WEAK
+  nsView*                        mInnerView;
+  nsCOMPtr<nsIWidget>             mWidget;
+  nsIntRect                       mWindowlessRect;
+  /**
+   * This is owned by the ReadbackLayer for this nsPluginFrame. It is
+   * automatically cleared if the PluginBackgroundSink is destroyed.
+   */
+  PluginBackgroundSink*           mBackgroundSink;
+
+  /**
+   * Bounds that we should set the plugin's widget to in the next composite,
+   * for plugins with widgets. For plugins without widgets, bounds in device
+   * pixels relative to the nearest frame that's a display list reference frame.
+   */
+  LayoutDeviceIntRect             mNextConfigurationBounds;
+  /**
+   * Clip region that we should set the plugin's widget to
+   * in the next composite. Only meaningful for plugins with widgets.
+   */
+  nsTArray<LayoutDeviceIntRect>   mNextConfigurationClipRegion;
+
+  bool mReflowCallbackPosted;
+
+  // We keep this reference to ensure we can always unregister the
+  // plugins we register on the root PresContext.
+  // This is only non-null while we have a plugin registered for geometry
+  // updates.
+  RefPtr<nsRootPresContext> mRootPresContextRegisteredWith;
+
+  mozilla::UniquePtr<PluginFrameDidCompositeObserver> mDidCompositeObserver;
+};
+
+class nsDisplayPlugin : public nsDisplayItem {
+public:
+  nsDisplayPlugin(nsDisplayListBuilder* aBuilder, nsIFrame* aFrame)
+    : nsDisplayItem(aBuilder, aFrame)
+  {
+    MOZ_COUNT_CTOR(nsDisplayPlugin);
+    aBuilder->SetContainsPluginItem();
+  }
+#ifdef NS_BUILD_REFCNT_LOGGING
+  virtual ~nsDisplayPlugin() {
+    MOZ_COUNT_DTOR(nsDisplayPlugin);
+  }
+#endif
+
+  virtual nsRect GetBounds(nsDisplayListBuilder* aBuilder, bool* aSnap) override;
+  virtual nsRegion GetOpaqueRegion(nsDisplayListBuilder* aBuilder,
+                                   bool* aSnap) override;
+  virtual void Paint(nsDisplayListBuilder* aBuilder,
+                     nsRenderingContext* aCtx) override;
+  virtual bool ComputeVisibility(nsDisplayListBuilder* aBuilder,
+                                 nsRegion* aVisibleRegion) override;
+
+  NS_DISPLAY_DECL_NAME("Plugin", TYPE_PLUGIN)
+
+  virtual already_AddRefed<Layer> BuildLayer(nsDisplayListBuilder* aBuilder,
+                                             LayerManager* aManager,
+                                             const ContainerLayerParameters& aContainerParameters) override
+  {
+    return static_cast<nsPluginFrame*>(mFrame)->BuildLayer(aBuilder,
+                                                           aManager, 
+                                                           this,
+                                                           aContainerParameters);
+  }
+
+  virtual LayerState GetLayerState(nsDisplayListBuilder* aBuilder,
+                                   LayerManager* aManager,
+                                   const ContainerLayerParameters& aParameters) override
+  {
+    return static_cast<nsPluginFrame*>(mFrame)->GetLayerState(aBuilder,
+                                                              aManager);
+  }
+};
+
+#endif /* nsPluginFrame_h___ */