Event handling support for ozone.

ui/base/ozone/event_converter_ozone.h

Index: ui/base/ozone/event_converter_ozone.h
diff --git a/ui/base/ozone/event_converter_ozone.h b/ui/base/ozone/event_converter_ozone.h
new file mode 100644
index 0000000000000000000000000000000000000000..989a21a01b2c733b0589396148d667051f6e2e2d
--- /dev/null
+++ b/ui/base/ozone/event_converter_ozone.h
@@ -0,0 +1,36 @@
+// Copyright (c) 2013 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_BASE_OZONE_EVENT_CONVERTER_OZONE_H_
+#define UI_BASE_OZONE_EVENT_CONVERTER_OZONE_H_
+
+#include "base/message_pump_libevent.h"
+
+namespace ui {
+class Event;
+
+// In ozone, Chrome reads events from file descriptors created from Linux device
+// drivers. The |MessagePumpLibevent::Watcher| parent class provides the
+// functionality to watch a file descriptor for the arrival of new data and
+// notify its subclasses. Device-specific event converters turn bytes read from
+// the file descriptor into |ui::Event| instances. This class provides the
+// functionality needed in common across all converters: dispatching the
+// |ui::Event| to aura.
+class EventConverterOzone : public base::MessagePumpLibevent::Watcher {
+ public:
+  EventConverterOzone() {}

[sky, 2013/06/07 04:57:25]

The style guide says no to inlining of constructor/destructor.

[rjkroege, 2013/06/07 21:10:42]

Done.

+  virtual ~EventConverterOzone() {}
+
+ protected:
+  // Subclasses should use this method to post a task that will dispatch
+  // |event| from the UI message loop. This method takes ownership of
+  // |event|. |event| will be deleted at the end of the posted task.
+  void DispatchEvent(ui::Event* event);

[sky, 2013/06/07 04:57:25]

scoped_ptr<ui::Event> event to make ownership clear?

[rjkroege, 2013/06/07 21:10:42]

done.

+
+  DISALLOW_COPY_AND_ASSIGN(EventConverterOzone);

[sky, 2013/06/07 04:57:25]

private:

[rjkroege, 2013/06/07 21:10:42]

Done.

+};
+
+}  // namespace ui
+
+#endif  // UI_BASE_OZONE_EVENT_CONVERTER_OZONE_H_