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// Copyright (c) 2012 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_LOOP_MESSAGE_PUMP_X11_H
#define BASE_MESSAGE_LOOP_MESSAGE_PUMP_X11_H
#include <bitset>
#include <map>
#include "base/memory/scoped_ptr.h"
#include "base/message_loop/message_pump.h"
#include "base/message_loop/message_pump_dispatcher.h"
#include "base/message_loop/message_pump_glib.h"
#include "base/message_loop/message_pump_observer.h"
#include "base/observer_list.h"
// It would be nice to include the X11 headers here so that we use Window
// instead of its typedef of unsigned long, but we can't because everything in
// chrome includes us through base/message_loop/message_loop.h, and X11's crappy
// #define heavy headers muck up half of chrome.
typedef struct _GPollFD GPollFD;
typedef struct _GSource GSource;
typedef struct _XDisplay Display;
namespace base {
// This class implements a message-pump for dispatching X events.
//
// If there's a current dispatcher given through RunWithDispatcher(), that
// dispatcher receives events. Otherwise, we route to messages to dispatchers
// who have subscribed to messages from a specific X11 window.
class BASE_EXPORT MessagePumpX11 : public MessagePumpGlib {
public:
MessagePumpX11();
virtual ~MessagePumpX11();
// Returns default X Display.
static Display* GetDefaultXDisplay();
// Returns the UI or GPU message pump.
static MessagePumpX11* Current();
// Adds an Observer, which will start receiving notifications immediately.
void AddObserver(MessagePumpObserver* observer);
// Removes an Observer. It is safe to call this method while an Observer is
// receiving a notification callback.
void RemoveObserver(MessagePumpObserver* observer);
// Sends the event to the observers.
void WillProcessXEvent(XEvent* xevent);
void DidProcessXEvent(XEvent* xevent);
private:
// List of observers.
ObserverList<MessagePumpObserver> observers_;
DISALLOW_COPY_AND_ASSIGN(MessagePumpX11);
};
#if !defined(TOOLKIT_GTK)
typedef MessagePumpX11 MessagePumpForUI;
#endif
} // namespace base
#endif // BASE_MESSAGE_LOOP_MESSAGE_PUMP_X11_H
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