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// Copyright (c) 2011 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_WAYLAND_H_
#define BASE_MESSAGE_PUMP_WAYLAND_H_
#pragma once
#include "base/memory/scoped_ptr.h"
#include "base/message_pump_glib.h"
typedef struct _GMainContext GMainContext;
typedef struct _GPollFD GPollFD;
typedef struct _GSource GSource;
namespace ui {
union WaylandEvent;
} // namespace ui
namespace base {
// The documentation for this class is in message_pump_glib.h
class BASE_EXPORT MessagePumpObserver {
public:
enum EventStatus {
EVENT_CONTINUE, // The event should be dispatched as normal.
EVENT_HANDLED // The event should not be processed any farther.
};
// This method is called before processing an Event. If the method returns
// EVENT_HANDLED, it indicates the event has already been handled, so the
// event is not processed any farther. If the method returns EVENT_CONTINUE,
// the event dispatching proceeds as normal.
virtual EventStatus WillProcessEvent(ui::WaylandEvent* event);
protected:
virtual ~MessagePumpObserver() {}
};
// The documentation for this class is in message_pump_glib.h
//
// The nested loop is exited by either posting a quit, or returning false
// from Dispatch.
class MessagePumpDispatcher {
public:
enum DispatchStatus {
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.
};
// Dispatches the event. If true is returned processing continues as
// normal. If false is returned, the nested loop exits immediately.
virtual DispatchStatus Dispatch(ui::WaylandEvent* event) = 0;
protected:
virtual ~MessagePumpDispatcher() {}
};
class BASE_EXPORT MessagePumpWayland : public MessagePumpGlib {
public:
MessagePumpWayland();
virtual ~MessagePumpWayland();
// Overridden from MessagePumpGlib
virtual bool RunOnce(GMainContext* context, bool block) OVERRIDE;
private:
// This is a GLib structure that we can add event sources to.
GMainContext* context_;
DISALLOW_COPY_AND_ASSIGN(MessagePumpWayland);
};
typedef MessagePumpWayland MessagePumpForUI;
} // namespace base
#endif // BASE_MESSAGE_PUMP_WAYLAND_H_
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