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+/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
+/* vim: set sw=4 ts=8 et 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_ContentProcessController_h
+#define mozilla_layers_ContentProcessController_h
+
+#include "mozilla/layers/GeckoContentController.h"
+
+class nsIObserver;
+
+namespace mozilla {
+
+namespace dom {
+class TabChild;
+} // namespace dom
+
+namespace layers {
+
+class APZChild;
+
+/**
+ * ContentProcessController is a GeckoContentController for a TabChild, and is always
+ * remoted using PAPZ/APZChild.
+ *
+ * ContentProcessController is created in ContentChild when a layer tree id has
+ * been allocated for a PBrowser that lives in that content process, and is destroyed
+ * when the Destroy message is received, or when the tab dies.
+ *
+ * If ContentProcessController needs to implement a new method on GeckoContentController
+ * PAPZ, APZChild, and RemoteContentController must be updated to handle it.
+ */
+class ContentProcessController final
+ : public GeckoContentController
+{
+public:
+ ~ContentProcessController();
+
+ static APZChild* Create(const dom::TabId& aTabId);
+
+ // ContentProcessController
+
+ void SetBrowser(dom::TabChild* aBrowser);
+
+ // GeckoContentController
+
+ void RequestContentRepaint(const FrameMetrics& frame) override;
+
+ void HandleTap(TapType aType,
+ const LayoutDevicePoint& aPoint,
+ Modifiers aModifiers,
+ const ScrollableLayerGuid& aGuid,
+ uint64_t aInputBlockId) override;
+
+ void NotifyPinchGesture(PinchGestureInput::PinchGestureType aType,
+ const ScrollableLayerGuid& aGuid,
+ LayoutDeviceCoord aSpanChange,
+ Modifiers aModifiers) override;
+
+ void NotifyAPZStateChange(const ScrollableLayerGuid& aGuid,
+ APZStateChange aChange,
+ int aArg) override;
+
+ void NotifyMozMouseScrollEvent(const FrameMetrics::ViewID& aScrollId,
+ const nsString& aEvent) override;
+
+ void NotifyFlushComplete() override;
+
+ void PostDelayedTask(already_AddRefed<Runnable> aRunnable, int aDelayMs) override;
+
+ bool IsRepaintThread() override;
+
+ void DispatchToRepaintThread(already_AddRefed<Runnable> aTask) override;
+
+private:
+ ContentProcessController();
+
+ void SetObserver(nsIObserver* aObserver);
+
+ RefPtr<dom::TabChild> mBrowser;
+ RefPtr<nsIObserver> mObserver;
+};
+
+} // namespace layers
+
+} // namespace mozilla
+
+#endif // mozilla_layers_ContentProcessController_h