atk/atkrelation.h

   1 /* ATK -  Accessibility Toolkit
   2  * Copyright 2001 Sun Microsystems Inc.
   3  *
   4  * This library is free software; you can redistribute it and/or
   5  * modify it under the terms of the GNU Library General Public
   6  * License as published by the Free Software Foundation; either
   7  * version 2 of the License, or (at your option) any later version.
   8  *
   9  * This library is distributed in the hope that it will be useful,
  10  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  11  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  12  * Library General Public License for more details.
  13  *
  14  * You should have received a copy of the GNU Library General Public
  15  * License along with this library; if not, write to the
  16  * Free Software Foundation, Inc., 59 Temple Place - Suite 330,
  17  * Boston, MA 02111-1307, USA.
  18  */
  19
  20 #if defined(ATK_DISABLE_SINGLE_INCLUDES) && !defined (__ATK_H_INSIDE__) && !defined (ATK_COMPILATION)
  21 #error "Only <atk/atk.h> can be included directly."
  22 #endif
  23
  24 #ifndef __ATK_RELATION_H__
  25 #define __ATK_RELATION_H__
  26
  27 G_BEGIN_DECLS
  28
  29 #include <glib-object.h>
  30 #include <atk/atkrelationtype.h>
  31 #include <atk/atkversion.h>
  32
  33 /*
  34  * An AtkRelation describes a relation between the object and one or more
  35  * other objects. The actual relations that an object has with other objects
  36  * are defined as an AtkRelationSet, which is a set of AtkRelations.
  37  */
  38
  39 #define ATK_TYPE_RELATION                         (atk_relation_get_type ())
  40 #define ATK_RELATION(obj)                         (G_TYPE_CHECK_INSTANCE_CAST ((obj), ATK_TYPE_RELATION, AtkRelation))
  41 #define ATK_RELATION_CLASS(klass)                 (G_TYPE_CHECK_CLASS_CAST ((klass), ATK_TYPE_RELATION, AtkRelationClass))
  42 #define ATK_IS_RELATION(obj)                      (G_TYPE_CHECK_INSTANCE_TYPE ((obj), ATK_TYPE_RELATION))
  43 #define ATK_IS_RELATION_CLASS(klass)              (G_TYPE_CHECK_CLASS_TYPE ((klass), ATK_TYPE_RELATION))
  44 #define ATK_RELATION_GET_CLASS(obj)               (G_TYPE_INSTANCE_GET_CLASS ((obj), ATK_TYPE_RELATION, AtkRelationClass))
  45
  46 typedef struct _AtkRelation            AtkRelation;
  47 typedef struct _AtkRelationClass       AtkRelationClass;
  48
  49 struct _AtkRelation
  50 {
  51   GObject parent;
  52
  53   GPtrArray       *target;
  54   AtkRelationType relationship;
  55 };
  56
  57 struct _AtkRelationClass
  58 {
  59   GObjectClass parent;
  60 };
  61
  62 ATK_AVAILABLE_IN_ALL
  63 GType atk_relation_get_type (void);
  64
  65 ATK_AVAILABLE_IN_ALL
  66 AtkRelationType       atk_relation_type_register      (const gchar     *name);
  67 ATK_AVAILABLE_IN_ALL
  68 const gchar*          atk_relation_type_get_name      (AtkRelationType type);
  69 ATK_AVAILABLE_IN_ALL
  70 AtkRelationType       atk_relation_type_for_name      (const gchar     *name);
  71
  72 /*
  73  * Create a new relation for the specified key and the specified list
  74  * of targets.
  75  */
  76 ATK_AVAILABLE_IN_ALL
  77 AtkRelation*          atk_relation_new                (AtkObject       **targets,
  78                                                        gint            n_targets,
  79                                                        AtkRelationType relationship);
  80 /*
  81  * Returns the type of a relation.
  82  */
  83 ATK_AVAILABLE_IN_ALL
  84 AtkRelationType       atk_relation_get_relation_type  (AtkRelation     *relation);
  85 /*
  86  * Returns the target list of a relation.
  87  */
  88 ATK_AVAILABLE_IN_ALL
  89 GPtrArray*            atk_relation_get_target         (AtkRelation     *relation);
  90 ATK_AVAILABLE_IN_ALL
  91 void                  atk_relation_add_target         (AtkRelation     *relation,
  92                                                        AtkObject       *target);
  93 ATK_AVAILABLE_IN_ALL
  94 gboolean              atk_relation_remove_target      (AtkRelation     *relation,
  95                                                        AtkObject       *target);
  96
  97 G_END_DECLS
  98
  99 #endif /* __ATK_RELATION_H__ */