/* Copyright (C) 2006 Openismus GmbH

 *

 * 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, write to the

 * Free Software Foundation, Inc., 59 Temple Place - Suite 330,

 * Boston, MA 02111-1307, USA.

 */

#ifndef __GTK_IM_CONTEXT_MULTIPRESS_H__

#define __GTK_IM_CONTEXT_MULTIPRESS_H__

#include <gtk/gtk.h>

G_BEGIN_DECLS

#define GTK_TYPE_IM_CONTEXT_MULTIPRESS            (gtk_im_context_multipress_get_type ())

#define GTK_IM_CONTEXT_MULTIPRESS(obj)            (G_TYPE_CHECK_INSTANCE_CAST ((obj), GTK_TYPE_IM_CONTEXT_MULTIPRESS, GtkImContextMultipress))

#define GTK_IM_CONTEXT_MULTIPRESS_CLASS(klass)    (G_TYPE_CHECK_CLASS_CAST ((klass), GTK_TYPE_IM_CONTEXT_MULTIPRESS, GtkImContextMultipressClass))

#define GTK_IS_IM_CONTEXT_MULTIPRESS(obj)         (G_TYPE_CHECK_INSTANCE_TYPE ((obj), GTK_TYPE_IM_CONTEXT_MULTIPRESS))

#define GTK_IS_IM_CONTEXT_MULTIPRESS_CLASS(klass) (G_TYPE_CHECK_CLASS_TYPE ((klass), GTK_TYPE_IM_CONTEXT_MULTIPRESS))

#define GTK_IM_CONTEXT_MULTIPRESS_GET_CLASS(obj)  (G_TYPE_INSTANCE_GET_CLASS ((obj), GTK_TYPE_IM_CONTEXT_MULTIPRESS, GtkImContextMultipressClass))

typedef struct _GtkImContextMultipress GtkImContextMultipress;

/* This input method allows multi-press character input, like that found on

 * mobile phones.

 *

 * This is based on GtkImContextSimple, which allows "compose" based on

 * sequences of characters.  But instead the character sequences are defined

 * by lists of characters for a key, so that repeated pressing of the same key

 * can cycle through the possible output characters, with automatic choosing

 * of the character after a time delay.

 */

struct _GtkImContextMultipress

{

  /*< private >*/

  GtkIMContext parent;

  /* Sequence information, loaded from the configuration file: */

  GHashTable* key_sequences;

  gsize dummy; /* ABI-preserving placeholder */

  /* The last character entered so far during a compose.

   * If this is NULL then we are not composing yet.

   */

  guint key_last_entered;

  /* The position of the compose in the possible sequence.

   *  For instance, this is 2 if aa has been pressed to show b (from abc0).

   */

  guint compose_count; 

  guint timeout_id;

  /* The character(s) that will be used if it the current character(s) is accepted: */

  const gchar *tentative_match;

};

typedef struct _GtkImContextMultipressClass  GtkImContextMultipressClass;

struct _GtkImContextMultipressClass

{

  GtkIMContextClass parent_class;

};

void gtk_im_context_multipress_register_type (GTypeModule* type_module);

GType gtk_im_context_multipress_get_type (void);

GtkIMContext *gtk_im_context_multipress_new (void);

G_END_DECLS

#endif /* __GTK_IM_CONTEXT_MULTIPRESS_H__ */