1 files changed, 102 insertions, 0 deletions
diff --git a/gfx/layers/apz/util/ChromeProcessController.h b/gfx/layers/apz/util/ChromeProcessController.h
new file mode 100644
index 0000000000..7328d62adb
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+++ b/gfx/layers/apz/util/ChromeProcessController.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 mozilla_layers_ChromeProcessController_h
+#define mozilla_layers_ChromeProcessController_h
+
+#include "mozilla/layers/GeckoContentController.h"
+#include "nsCOMPtr.h"
+#include "mozilla/RefPtr.h"
+#include "mozilla/layers/MatrixMessage.h"
+
+class nsIDOMWindowUtils;
+class nsISerialEventTarget;
+class nsIWidget;
+
+namespace mozilla {
+class PresShell;
+namespace dom {
+class Document;
+}
+
+namespace layers {
+
+class IAPZCTreeManager;
+class APZEventState;
+
+/**
+ * ChromeProcessController is a GeckoContentController attached to the root of
+ * a compositor's layer tree. It's used directly by APZ by default, and remoted
+ * using PAPZ if there is a gpu process.
+ *
+ * If ChromeProcessController needs to implement a new method on
+ * GeckoContentController PAPZ, APZChild, and RemoteContentController must be
+ * updated to handle it.
+ */
+class ChromeProcessController : public mozilla::layers::GeckoContentController {
+ protected:
+  typedef mozilla::layers::FrameMetrics FrameMetrics;
+  typedef mozilla::layers::ScrollableLayerGuid ScrollableLayerGuid;
+
+ public:
+  explicit ChromeProcessController(nsIWidget* aWidget,
+                                   APZEventState* aAPZEventState,
+                                   IAPZCTreeManager* aAPZCTreeManager);
+  virtual ~ChromeProcessController();
+  void Destroy() override;
+
+  // GeckoContentController interface
+  void NotifyLayerTransforms(nsTArray<MatrixMessage>&& aTransforms) override;
+  void RequestContentRepaint(const RepaintRequest& aRequest) override;
+  bool IsRepaintThread() override;
+  void DispatchToRepaintThread(already_AddRefed<Runnable> aTask) override;
+  MOZ_CAN_RUN_SCRIPT
+  void HandleTap(TapType aType, const mozilla::LayoutDevicePoint& aPoint,
+                 Modifiers aModifiers, const ScrollableLayerGuid& aGuid,
+                 uint64_t aInputBlockId) override;
+  void NotifyPinchGesture(PinchGestureInput::PinchGestureType aType,
+                          const ScrollableLayerGuid& aGuid,
+                          const LayoutDevicePoint& aFocusPoint,
+                          LayoutDeviceCoord aSpanChange,
+                          Modifiers aModifiers) override;
+  void NotifyAPZStateChange(const ScrollableLayerGuid& aGuid,
+                            APZStateChange aChange, int aArg,
+                            Maybe<uint64_t> aInputBlockId) override;
+  void NotifyMozMouseScrollEvent(const ScrollableLayerGuid::ViewID& aScrollId,
+                                 const nsString& aEvent) override;
+  void NotifyFlushComplete() override;
+  void NotifyAsyncScrollbarDragInitiated(
+      uint64_t aDragBlockId, const ScrollableLayerGuid::ViewID& aScrollId,
+      ScrollDirection aDirection) override;
+  void NotifyAsyncScrollbarDragRejected(
+      const ScrollableLayerGuid::ViewID& aScrollId) override;
+  void NotifyAsyncAutoscrollRejected(
+      const ScrollableLayerGuid::ViewID& aScrollId) override;
+  void CancelAutoscroll(const ScrollableLayerGuid& aGuid) override;
+  void NotifyScaleGestureComplete(const ScrollableLayerGuid& aGuid,
+                                  float aScale) override;
+
+  PresShell* GetTopLevelPresShell() const override { return GetPresShell(); }
+
+ private:
+  nsCOMPtr<nsIWidget> mWidget;
+  RefPtr<APZEventState> mAPZEventState;
+  RefPtr<IAPZCTreeManager> mAPZCTreeManager;
+  nsCOMPtr<nsISerialEventTarget> mUIThread;
+
+  void InitializeRoot();
+  PresShell* GetPresShell() const;
+  dom::Document* GetRootDocument() const;
+  dom::Document* GetRootContentDocument(
+      const ScrollableLayerGuid::ViewID& aScrollId) const;
+  void HandleDoubleTap(const mozilla::CSSPoint& aPoint, Modifiers aModifiers,
+                       const ScrollableLayerGuid& aGuid);
+};
+
+}  // namespace layers
+}  // namespace mozilla
+
+#endif /* mozilla_layers_ChromeProcessController_h */