A non-GTK version of menus for touchui.

base/message_pump_glib_x_dispatch.h

 // Copyright (c) 2010 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 BASE_MESSAGE_PUMP_GLIB_X_DISPATCH_H
 #define BASE_MESSAGE_PUMP_GLIB_X_DISPATCH_H
 
 #include "base/message_pump.h"
 #include "base/message_pump_glib.h"
 
 typedef union _XEvent XEvent;
 
 namespace base {
 
 // The message pump used for TOUCH_UI on linux is MessagePumpGlibX, which can
 // dispatch both GdkEvents* and XEvents* captured directly from X.
 // MessagePumpForUI::Dispatcher provides the mechanism for dispatching
 // GdkEvents. This class provides additional mechanism for dispatching XEvents.
 class MessagePumpGlibXDispatcher : public MessagePumpForUI::Dispatcher {
  public:
-  // Dispatches the event. If true is returned processing continues as
-  // normal. If false is returned, the nested loop exits immediately.
-  virtual bool Dispatch(XEvent* xevent) = 0;
+
+  typedef enum {
+    EVENT_IGNORED,    // The event was not processed.
+    EVENT_PROCESSED,  // The event has been processed.
+    EVENT_QUIT        // The event was processed and the message-loop should
+                      // terminate.
+  } DispatchStatus;
+
+  // Dispatches the event. EVENT_IGNORED is returned if the event was ignored
+  // (i.e. not processed). EVENT_PROCESSED is returned if the event was
+  // processed. The nested loop exits immediately if EVENT_QUIT is returned.
+  virtual DispatchStatus Dispatch(XEvent* xevent) = 0;
 };
 
 }  // namespace base
 
 #endif  // BASE_MESSAGE_PUMP_GLIB_X_DISPATCH_H