[CRD iOS] Inject mouse events to the host

remoting/client/gesture_interpreter.h

 // Copyright 2017 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #ifndef REMOTING_CLIENT_GESTURE_INTERPRETER_H_
 #define REMOTING_CLIENT_GESTURE_INTERPRETER_H_
 
+#include <memory>
+
+#include "remoting/client/chromoting_session.h"
 #include "remoting/client/desktop_viewport.h"
+#include "remoting/proto/event.pb.h"
 
 namespace remoting {
 
+class InputStrategy;
+
 // This is a class for interpreting a raw touch input into actions like moving
 // the viewport and injecting mouse clicks.
 class GestureInterpreter {
  public:
+  enum GestureState { GESTURE_BEGAN, GESTURE_CHANGED, GESTURE_ENDED };
+
   GestureInterpreter(
-      const DesktopViewport::TransformationCallback& on_transformation_changed);
+      const DesktopViewport::TransformationCallback& on_transformation_changed,
+      ChromotingSession* input_stub);
   ~GestureInterpreter();
 
   // Coordinates of the OpenGL view surface will be used.
   void Pinch(float pivot_x, float pivot_y, float scale);
   void Pan(float translation_x, float translation_y);
   void Tap(float x, float y);
-  void LongPress(float x, float y);
+  void TwoFingerTap(float x, float y);
+
+  // Caller is expected to call both Pan() and LongPress() when long-press is in
+  // progress.
+  void LongPress(float x, float y, GestureState state);
 
   void OnSurfaceSizeChanged(int width, int height);
   void OnDesktopSizeChanged(int width, int height);
 
  private:
+  void InjectMouseClick(float x,
+                        float y,
+                        protocol::MouseEvent_MouseButton button);
+
+  std::unique_ptr<InputStrategy> input_strategy_;
   DesktopViewport viewport_;
+  ChromotingSession* input_stub_;
+  bool is_dragging_mode_ = false;
 
   // GestureInterpreter is neither copyable nor movable.
   GestureInterpreter(const GestureInterpreter&) = delete;
   GestureInterpreter& operator=(const GestureInterpreter&) = delete;
 };
 
 }  // namespace remoting
 #endif  // REMOTING_CLIENT_GESTURE_INTERPRETER_H_