src/ui/events/ozone/evdev/event_converter_evdev.h

   1 // Copyright 2014 The Chromium Authors. All rights reserved.
   2 // Use of this source code is governed by a BSD-style license that can be
   3 // found in the LICENSE file.
   4
   5 #ifndef UI_EVENTS_OZONE_EVDEV_EVENT_CONVERTER_EVDEV_H_
   6 #define UI_EVENTS_OZONE_EVDEV_EVENT_CONVERTER_EVDEV_H_
   7
   8 #include "base/basictypes.h"
   9 #include "base/bind.h"
  10 #include "base/memory/scoped_ptr.h"
  11 #include "ui/events/ozone/evdev/events_ozone_evdev_export.h"
  12
  13 namespace ui {
  14
  15 class Event;
  16 class EventModifiersEvdev;
  17
  18 typedef base::Callback<void(Event*)> EventDispatchCallback;
  19
  20 // Base class for device-specific evdev event conversion.
  21 class EVENTS_OZONE_EVDEV_EXPORT EventConverterEvdev {
  22  public:
  23   EventConverterEvdev();
  24   explicit EventConverterEvdev(const EventDispatchCallback& callback);
  25   virtual ~EventConverterEvdev();
  26
  27   // Start converting events.
  28   virtual void Start() = 0;
  29
  30   // Stop converting events.
  31   virtual void Stop() = 0;
  32
  33  protected:
  34   // Dispatches an event using the dispatch-callback set using
  35   // |SetDispatchCalback()|.
  36   virtual void DispatchEventToCallback(ui::Event* event);
  37
  38  private:
  39   EventDispatchCallback dispatch_callback_;
  40
  41   DISALLOW_COPY_AND_ASSIGN(EventConverterEvdev);
  42 };
  43
  44 }  // namespace ui
  45
  46 #endif  // UI_EVENTS_OZONE_EVDEV_EVENT_CONVERTER_EVDEV_H_