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/* GTK - The GIMP Toolkit
 * Copyright (C) 1995-1997 Peter Mattis, Spencer Kimball and Josh MacDonald
 *
 * GtkBindingSet: Keybinding manager for GObjects.
 * Copyright (C) 1998 Tim Janik
 *
 * 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/>.
 */

/*
 * Modified by the GTK+ Team and others 1997-2000.  See the AUTHORS
 * file for a list of people on the GTK+ Team.  See the ChangeLog
 * files for a list of changes.  These files are distributed with
 * GTK+ at ftp://ftp.gtk.org/pub/gtk/.
 */

#if !defined (__GTK_H_INSIDE__) && !defined (GTK_COMPILATION)
#error "Only <gtk/gtk.h> can be included directly."
#endif

#ifndef __GTK_BINDINGS_H__
#define __GTK_BINDINGS_H__


#include <gdk/gdk.h>
#include <gtk/gtkenums.h>

G_BEGIN_DECLS

typedef struct _GtkBindingSet    GtkBindingSet;
typedef struct _GtkBindingEntry  GtkBindingEntry;
typedef struct _GtkBindingSignal GtkBindingSignal;
typedef struct _GtkBindingArg    GtkBindingArg;

/**
 * GtkBindingSet:
 * @set_name: unique name of this binding set
 * @priority: unused
 * @widget_path_pspecs: unused
 * @widget_class_pspecs: unused
 * @class_branch_pspecs: unused
 * @entries: the key binding entries in this binding set
 * @current: implementation detail
 * @parsed: whether this binding set stems from a CSS file and is reset upon theme changes
 *
 * A binding set maintains a list of activatable key bindings.
 * A single binding set can match multiple types of widgets.
 * Similar to style contexts, can be matched by any information contained
 * in a widgets #GtkWidgetPath. When a binding within a set is matched upon
 * activation, an action signal is emitted on the target widget to carry out
 * the actual activation.
 */
struct _GtkBindingSet
{
  gchar           *set_name;
  gint             priority;
  GSList          *widget_path_pspecs;
  GSList          *widget_class_pspecs;
  GSList          *class_branch_pspecs;
  GtkBindingEntry *entries;
  GtkBindingEntry *current;
  guint            parsed : 1;
};

/**
 * GtkBindingEntry:
 * @keyval: key value to match
 * @modifiers: key modifiers to match
 * @binding_set: binding set this entry belongs to
 * @destroyed: implementation detail
 * @in_emission: implementation detail
 * @marks_unbound: implementation detail
 * @set_next: linked list of entries maintained by binding set
 * @hash_next: implementation detail
 * @signals: action signals of this entry
 *
 * Each key binding element of a binding sets binding list is
 * represented by a GtkBindingEntry.
 */
struct _GtkBindingEntry
{
  /* key portion */
  guint             keyval;
  GdkModifierType   modifiers;

  GtkBindingSet    *binding_set;
  guint             destroyed     : 1;
  guint             in_emission   : 1;
  guint             marks_unbound : 1;
  GtkBindingEntry  *set_next;
  GtkBindingEntry  *hash_next;
  GtkBindingSignal *signals;
};

/**
 * GtkBindingArg:
 * @arg_type: implementation detail
 *
 * A #GtkBindingArg holds the data associated with
 * an argument for a key binding signal emission as
 * stored in #GtkBindingSignal.
 */
struct _GtkBindingArg
{
  GType      arg_type;
  union {
    glong    long_data;
    gdouble  double_data;
    gchar   *string_data;
  } d;
};

/**
 * GtkBindingSignal:
 * @next: implementation detail
 * @signal_name: the action signal to be emitted
 * @n_args: number of arguments specified for the signal
 * @args: the arguments specified for the signal
 *
 * <anchor id="keybinding-signals"/>
 * A GtkBindingSignal stores the necessary information to
 * activate a widget in response to a key press via a signal
 * emission.
 */
struct _GtkBindingSignal
{
  GtkBindingSignal *next;
  gchar            *signal_name;
  guint             n_args;
  GtkBindingArg    *args;
};

GtkBindingSet *gtk_binding_set_new           (const gchar         *set_name);
GtkBindingSet *gtk_binding_set_by_class      (gpointer             object_class);
GtkBindingSet *gtk_binding_set_find          (const gchar         *set_name);

gboolean       gtk_bindings_activate         (GObject             *object,
                                              guint                keyval,
                                              GdkModifierType      modifiers);
gboolean       gtk_bindings_activate_event   (GObject             *object,
                                              GdkEventKey         *event);
gboolean       gtk_binding_set_activate      (GtkBindingSet       *binding_set,
                                              guint                keyval,
                                              GdkModifierType      modifiers,
                                              GObject             *object);

void           gtk_binding_entry_skip        (GtkBindingSet       *binding_set,
                                              guint                keyval,
                                              GdkModifierType      modifiers);
void           gtk_binding_entry_add_signal  (GtkBindingSet       *binding_set,
                                              guint                keyval,
                                              GdkModifierType      modifiers,
                                              const gchar         *signal_name,
                                              guint                n_args,
                                              ...);
void           gtk_binding_entry_add_signall (GtkBindingSet       *binding_set,
                                              guint                keyval,
                                              GdkModifierType      modifiers,
                                              const gchar         *signal_name,
                                              GSList              *binding_args);

GTokenType     gtk_binding_entry_add_signal_from_string
                                             (GtkBindingSet       *binding_set,
                                              const gchar         *signal_desc);

void           gtk_binding_entry_remove      (GtkBindingSet       *binding_set,
                                              guint                keyval,
                                              GdkModifierType      modifiers);

GDK_DEPRECATED_IN_3_0
void           gtk_binding_set_add_path      (GtkBindingSet       *binding_set,
                                              GtkPathType          path_type,
                                              const gchar         *path_pattern,
                                              GtkPathPriorityType  priority);

G_END_DECLS

#endif /* __GTK_BINDINGS_H__ */