/* GDK - The GIMP Drawing Kit
 * Copyright (C) 2010, Red Hat, Inc
 *
 * This library is free software; you can redistribute it and/or
 * modify it under the terms of the GNU Lesser General Public
 * License as published by the Free Software Foundation; either
 * version 2 of the License, or (at your option) any later version.
 *
 * This library is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
 * Lesser General Public License for more details.
 *
 * You should have received a copy of the GNU Lesser General Public
 * License along with this library. If not, see <http://www.gnu.org/licenses/>.
 */

#ifndef __GDK_DND_PRIVATE_H__
#define __GDK_DND_PRIVATE_H__

#include "gdkdnd.h"

G_BEGIN_DECLS


#define GDK_DRAG_CONTEXT_CLASS(klass)      (G_TYPE_CHECK_CLASS_CAST ((klass), GDK_TYPE_DRAG_CONTEXT, GdkDragContextClass))
#define GDK_IS_DRAG_CONTEXT_CLASS(klass)   (G_TYPE_CHECK_CLASS_TYPE ((klass), GDK_TYPE_DRAG_CONTEXT))
#define GDK_DRAG_CONTEXT_GET_CLASS(obj)    (G_TYPE_INSTANCE_GET_CLASS ((obj), GDK_TYPE_DRAG_CONTEXT, GdkDragContextClass))

typedef struct _GdkDragContextClass GdkDragContextClass;


struct _GdkDragContextClass {
  GObjectClass parent_class;

  void        (*drag_status)   (GdkDragContext  *context,
                                GdkDragAction    action,
                                guint32          time_);
  void        (*drag_abort)    (GdkDragContext  *context,
                                guint32          time_);
  void        (*drag_drop)     (GdkDragContext  *context,
                                guint32          time_);
  void        (*drop_reply)    (GdkDragContext  *context,
                                gboolean         accept,
                                guint32          time_);
  void        (*drop_finish)   (GdkDragContext  *context,
                                gboolean         success,
                                guint32          time_);
  void                  (* read_async)                          (GdkDragContext         *context,
                                                                 GdkContentFormats      *formats,
                                                                 int                     io_priority,
                                                                 GCancellable           *cancellable,
                                                                 GAsyncReadyCallback     callback,
                                                                 gpointer                user_data);
  GInputStream *        (* read_finish)                         (GdkDragContext         *context,
                                                                 const char            **out_mime_type,
                                                                 GAsyncResult           *result,
                                                                 GError                **error);
  gboolean    (*drop_status)   (GdkDragContext  *context);
  GdkSurface*  (*get_drag_surface) (GdkDragContext *context);
  void        (*set_hotspot)   (GdkDragContext  *context,
                                gint             hot_x,
                                gint             hot_y);
  void        (*drop_done)     (GdkDragContext   *context,
                                gboolean          success);

  void        (*set_cursor)     (GdkDragContext  *context,
                                 GdkCursor       *cursor);
  void        (*cancel)         (GdkDragContext      *context,
                                 GdkDragCancelReason  reason);
  void        (*drop_performed) (GdkDragContext  *context,
                                 guint32          time);
  void        (*dnd_finished)   (GdkDragContext  *context);

  gboolean    (*handle_event)   (GdkDragContext  *context,
                                 const GdkEvent  *event);
  void        (*action_changed) (GdkDragContext  *context,
                                 GdkDragAction    action);

  void        (*commit_drag_status) (GdkDragContext  *context);
};

struct _GdkDragContext {
  GObject parent_instance;

  /*< private >*/
  GdkDisplay *display;

  gboolean is_source;
  GdkSurface *source_surface;
  GdkSurface *dest_surface;
  GdkSurface *drag_surface;

  GdkContentProvider *content;
  GdkContentFormats *formats;
  GdkDragAction actions;
  GdkDragAction suggested_action;
  GdkDragAction action;

  GdkDevice *device;

  guint drop_done : 1; /* Whether gdk_drag_drop_done() was performed */
};

void     gdk_drag_context_set_device          (GdkDragContext *context,
                                               GdkDevice      *device);
void     gdk_drag_context_set_cursor          (GdkDragContext *context,
                                               GdkCursor      *cursor);
void     gdk_drag_context_cancel              (GdkDragContext      *context,
                                               GdkDragCancelReason  reason);
gboolean gdk_drag_context_handle_source_event (GdkEvent *event);
gboolean gdk_drag_context_handle_dest_event   (GdkEvent *event);
GdkCursor * gdk_drag_get_cursor               (GdkDragContext *context,
                                               GdkDragAction   action);

void     gdk_drag_abort  (GdkDragContext *context,
                          guint32         time_);
void     gdk_drag_drop   (GdkDragContext *context,
                          guint32         time_);

void                    gdk_drag_context_write_async            (GdkDragContext         *context,
                                                                 const char             *mime_type,
                                                                 GOutputStream          *stream,
                                                                 int                     io_priority,
                                                                 GCancellable           *cancellable,
                                                                 GAsyncReadyCallback     callback,
                                                                 gpointer                user_data);
gboolean                gdk_drag_context_write_finish           (GdkDragContext         *context,
                                                                 GAsyncResult           *result,
                                                                 GError                **error);


G_END_DECLS

#endif