Pileus Git - ~andy/gtk/blob - gtk/a11y/gtkbooleancellaccessible.c

   1 /* GAIL - The GNOME Accessibility Enabling Library
   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 Lesser 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  * Lesser General Public License for more details.
  13  *
  14  * You should have received a copy of the GNU Lesser General Public
  15  * License along with this library. If not, see <http://www.gnu.org/licenses/>.
  16  */
  17
  18 #include "config.h"
  19
  20 #include <gtk/gtk.h>
  21 #include "gtkbooleancellaccessible.h"
  22
  23 struct _GtkBooleanCellAccessiblePrivate
  24 {
  25   gboolean cell_value;
  26   gboolean cell_sensitive;
  27 };
  28
  29 static AtkActionIface *parent_action_iface;
  30
  31 static gint
  32 gtk_boolean_cell_accessible_get_n_actions (AtkAction *action)
  33 {
  34   return parent_action_iface->get_n_actions (action) + 1;
  35 }
  36
  37 static const gchar *
  38 gtk_boolean_cell_accessible_get_description (AtkAction *action,
  39                                              gint       i)
  40 {
  41   if (i == 0)
  42     return "toggles the cell";
  43
  44   return parent_action_iface->get_description (action, i - 1);
  45 }
  46
  47 static const gchar *
  48 gtk_boolean_cell_accessible_action_get_name (AtkAction *action,
  49                                              gint       i)
  50 {
  51   if (i == 0)
  52     return "toggle";
  53
  54   return parent_action_iface->get_description (action, i - 1);
  55 }
  56
  57 static gboolean
  58 gtk_boolean_cell_accessible_do_action (AtkAction *action,
  59                                        gint       i)
  60 {
  61   if (i == 0)
  62     return parent_action_iface->do_action (action, 2);
  63   else
  64     return parent_action_iface->do_action (action, i - 1);
  65 }
  66
  67 static void
  68 gtk_boolean_cell_accessible_action_interface_init (AtkActionIface *iface)
  69 {
  70   parent_action_iface = g_type_interface_peek_parent (iface);
  71
  72   iface->do_action = gtk_boolean_cell_accessible_do_action;
  73   iface->get_n_actions = gtk_boolean_cell_accessible_get_n_actions;
  74   iface->get_description = gtk_boolean_cell_accessible_get_description;
  75   iface->get_name = gtk_boolean_cell_accessible_action_get_name;
  76 }
  77
  78
  79 G_DEFINE_TYPE_EXTENDED (GtkBooleanCellAccessible, _gtk_boolean_cell_accessible, GTK_TYPE_RENDERER_CELL_ACCESSIBLE, 0,
  80                         G_IMPLEMENT_INTERFACE (ATK_TYPE_ACTION, gtk_boolean_cell_accessible_action_interface_init))
  81
  82
  83 static AtkStateSet *
  84 gtk_boolean_cell_accessible_ref_state_set (AtkObject *accessible)
  85 {
  86   GtkBooleanCellAccessible *cell = GTK_BOOLEAN_CELL_ACCESSIBLE (accessible);
  87   AtkStateSet *state_set;
  88
  89   state_set = ATK_OBJECT_CLASS (_gtk_boolean_cell_accessible_parent_class)->ref_state_set (accessible);
  90
  91   if (cell->priv->cell_value)
  92     atk_state_set_add_state (state_set, ATK_STATE_CHECKED);
  93
  94   if (cell->priv->cell_sensitive)
  95     atk_state_set_add_state (state_set, ATK_STATE_SENSITIVE);
  96   else
  97     atk_state_set_remove_state (state_set, ATK_STATE_SENSITIVE);
  98
  99   return state_set;
 100 }
 101
 102 static void
 103 gtk_boolean_cell_accessible_update_cache (GtkCellAccessible *cell)
 104 {
 105   GtkBooleanCellAccessible *boolean_cell = GTK_BOOLEAN_CELL_ACCESSIBLE (cell);
 106   gboolean active;
 107   gboolean sensitive;
 108
 109   g_object_get (G_OBJECT (GTK_RENDERER_CELL_ACCESSIBLE (cell)->renderer),
 110                 "active", &active,
 111                 "sensitive", &sensitive,
 112                 NULL);
 113
 114   if (boolean_cell->priv->cell_value != active)
 115     {
 116       boolean_cell->priv->cell_value = !boolean_cell->priv->cell_value;
 117
 118       atk_object_notify_state_change (ATK_OBJECT (cell), ATK_STATE_CHECKED, active);
 119     }
 120
 121   if (boolean_cell->priv->cell_sensitive != sensitive)
 122     {
 123       boolean_cell->priv->cell_sensitive = !boolean_cell->priv->cell_sensitive;
 124
 125       atk_object_notify_state_change (ATK_OBJECT (cell), ATK_STATE_CHECKED, sensitive);
 126     }
 127 }
 128
 129 static void
 130 _gtk_boolean_cell_accessible_class_init (GtkBooleanCellAccessibleClass *klass)
 131 {
 132   GtkCellAccessibleClass *cell_class = GTK_CELL_ACCESSIBLE_CLASS (klass);
 133   AtkObjectClass *atkobject_class = ATK_OBJECT_CLASS (klass);
 134
 135   atkobject_class->ref_state_set = gtk_boolean_cell_accessible_ref_state_set;
 136
 137   cell_class->update_cache = gtk_boolean_cell_accessible_update_cache;
 138
 139   g_type_class_add_private (klass, sizeof (GtkBooleanCellAccessiblePrivate));
 140 }
 141
 142 static void
 143 _gtk_boolean_cell_accessible_init (GtkBooleanCellAccessible *cell)
 144 {
 145   cell->priv =  G_TYPE_INSTANCE_GET_PRIVATE (cell,
 146                                              GTK_TYPE_BOOLEAN_CELL_ACCESSIBLE,
 147                                              GtkBooleanCellAccessiblePrivate);
 148 }
 149