1// Copyright (c) 2011 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 BASE_MESSAGE_PUMP_GLIB_X_DISPATCH_H
6#define BASE_MESSAGE_PUMP_GLIB_X_DISPATCH_H
7
8#include "base/message_pump.h"
9#include "base/message_pump_glib.h"
10
11typedef union _XEvent XEvent;
12
13namespace base {
14
15// The message pump used for TOUCH_UI on linux is MessagePumpGlibX, which can
16// dispatch both GdkEvents* and XEvents* captured directly from X.
17// MessagePumpForUI::Dispatcher provides the mechanism for dispatching
18// GdkEvents. This class provides additional mechanism for dispatching XEvents.
19class MessagePumpGlibXDispatcher : public MessagePumpForUI::Dispatcher {
20 public:
21  enum DispatchStatus {
22    EVENT_IGNORED,    // The event was not processed.
23    EVENT_PROCESSED,  // The event has been processed.
24    EVENT_QUIT        // The event was processed and the message-loop should
25                      // terminate.
26  };
27
28  // Dispatches the event. EVENT_IGNORED is returned if the event was ignored
29  // (i.e. not processed). EVENT_PROCESSED is returned if the event was
30  // processed. The nested loop exits immediately if EVENT_QUIT is returned.
31  virtual DispatchStatus DispatchX(XEvent* xevent) = 0;
32};
33
34}  // namespace base
35
36#endif  // BASE_MESSAGE_PUMP_GLIB_X_DISPATCH_H
37