[PATCH 5/11] ozone: evdev: Replace dispatch callbacks with an interface

ui/events/ozone/evdev/tablet_event_converter_evdev.h

 // Copyright 2014 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 UI_EVENTS_OZONE_TABLET_EVENT_CONVERTER_EVDEV_H_
 #define UI_EVENTS_OZONE_TABLET_EVENT_CONVERTER_EVDEV_H_
 
 #include "base/files/file_path.h"
 #include "base/message_loop/message_pump_libevent.h"
 #include "ui/events/event.h"
 #include "ui/events/ozone/evdev/cursor_delegate_evdev.h"
 #include "ui/events/ozone/evdev/event_converter_evdev.h"
 #include "ui/events/ozone/evdev/event_device_info.h"
 #include "ui/events/ozone/evdev/event_modifiers_evdev.h"
 #include "ui/events/ozone/evdev/events_ozone_evdev_export.h"
 
 struct input_event;
 
 namespace ui {
 
+class DeviceEventDispatcherEvdev;
+
 class EVENTS_OZONE_EVDEV_EXPORT TabletEventConverterEvdev
     : public EventConverterEvdev {
  public:
-  TabletEventConverterEvdev(
-      int fd,
-      base::FilePath path,
-      int id,
-      InputDeviceType type,
-      CursorDelegateEvdev* cursor,
-      const EventDeviceInfo& info,
-      const MouseMoveEventDispatchCallback& mouse_move_callback,
-      const MouseButtonEventDispatchCallback& mouse_button_callback);
+  TabletEventConverterEvdev(int fd,
+                            base::FilePath path,
+                            int id,
+                            InputDeviceType type,
+                            CursorDelegateEvdev* cursor,
+                            const EventDeviceInfo& info,
+                            DeviceEventDispatcherEvdev* dispatcher);
   ~TabletEventConverterEvdev() override;
 
   // EventConverterEvdev:
   void OnFileCanReadWithoutBlocking(int fd) override;
 
   void ProcessEvents(const struct input_event* inputs, int count);
 
  private:
   friend class MockTabletEventConverterEvdev;
   void ConvertKeyEvent(const input_event& input);
   void ConvertAbsEvent(const input_event& input);
   void DispatchMouseButton(const input_event& input);
   void UpdateCursor();
 
   // Flush events delimited by EV_SYN. This is useful for handling
   // non-axis-aligned movement properly.
   void FlushEvents();
 
   // Controller for watching the input fd.
   base::MessagePumpLibevent::FileDescriptorWatcher controller_;
 
   // Shared cursor state.
   CursorDelegateEvdev* cursor_;
 
-  // Callbacks for dispatching events.
-  MouseMoveEventDispatchCallback mouse_move_callback_;
-  MouseButtonEventDispatchCallback mouse_button_callback_;
+  // Dispatcher for events.
+  DeviceEventDispatcherEvdev* dispatcher_;
 
   int y_abs_location_;
   int x_abs_location_;
   int x_abs_min_;
   int y_abs_min_;
   int x_abs_range_;
   int y_abs_range_;
 
   // BTN_TOOL_ code for the active device
   int stylus_;
 
   // Whether we need to move the cursor
   bool abs_value_dirty_;
 
   DISALLOW_COPY_AND_ASSIGN(TabletEventConverterEvdev);
 };
 
 }  // namespace ui
 
 #endif  // UI_EVENTS_OZONE_TABLET_EVENT_CONVERTER_EVDEV_H_