a11y/utils.c

   1 /*  This file is part of the GtkHTML library.
   2  *
   3  *  Copyright 2002 Ximian, Inc.
   4  *
   5  *  Author: Radek Doulik
   6  *
   7  *
   8  *  This library is free software; you can redistribute it and/or
   9  *  modify it under the terms of the GNU Library General Public
  10  *  License as published by the Free Software Foundation; either
  11  *  version 2 of the License, or (at your option) any later version.
  12  *
  13  *  This library is distributed in the hope that it will be useful,
  14  *  but WITHOUT ANY WARRANTY; without even the implied warranty of
  15  *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  16  *  Library General Public License for more details.
  17  *
  18  *  You should have received a copy of the GNU Library General Public License
  19  *  along with this library; see the file COPYING.LIB.  If not, write to
  20  *  the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
  21  *  Boston, MA 02110-1301, USA.
  22  */
  23
  24 #include "htmlembedded.h"
  25 #include "htmlobject.h"
  26
  27 #include "cell.h"
  28 #include "image.h"
  29 #include "paragraph.h"
  30 #include "table.h"
  31 #include "text.h"
  32 #include "utils.h"
  33
  34 static AtkObject *
  35 create_accessible (HTMLObject *o,
  36                    AtkObject *parent)
  37 {
  38         AtkObject *accessible = NULL;
  39
  40         switch (HTML_OBJECT_TYPE (o)) {
  41         case HTML_TYPE_CLUEFLOW:
  42                 accessible = html_a11y_paragraph_new (o);
  43                 break;
  44         case HTML_TYPE_TEXT:
  45                 accessible = html_a11y_text_new (o);
  46                 break;
  47         case HTML_TYPE_IMAGE:
  48                 accessible = html_a11y_image_new (o);
  49                 break;
  50         case HTML_TYPE_TABLE:
  51                 accessible = html_a11y_table_new (o);
  52                 break;
  53         case HTML_TYPE_TABLECELL:
  54                 accessible = html_a11y_cell_new (o);
  55                 break;
  56         case HTML_TYPE_RULE:
  57                 accessible = html_a11y_new (o, ATK_ROLE_SEPARATOR);
  58                 break;
  59         case HTML_TYPE_EMBEDDED:
  60         case HTML_TYPE_SELECT:
  61         case HTML_TYPE_RADIO:
  62         case HTML_TYPE_OBJECT:
  63         case HTML_TYPE_TEXTAREA:
  64         case HTML_TYPE_TEXTINPUT:
  65         case HTML_TYPE_BUTTON:
  66         case HTML_TYPE_CHECKBOX:
  67         case HTML_TYPE_IFRAME:
  68                 if (HTML_EMBEDDED (o)-> widget) {
  69                         accessible = gtk_widget_get_accessible (HTML_EMBEDDED (o)->widget);
  70
  71                         if (HTML_EMBEDDED (o)->name) {
  72                                 if ((accessible != NULL) && (atk_object_get_name (accessible) == NULL))
  73                                         atk_object_set_name (accessible, HTML_EMBEDDED (o)->name);
  74                         }
  75                 }
  76                 break;
  77         case HTML_TYPE_TEXTSLAVE: /* ignore */
  78                 break;
  79         default:
  80                 accessible = html_a11y_new (o, ATK_ROLE_UNKNOWN);
  81                 break;
  82         }
  83
  84         if (accessible && parent) {
  85                 /* printf ("set parent of %p to %p\n", accessible, parent); */
  86                 atk_object_set_parent (accessible, parent);
  87         }
  88
  89         return accessible;
  90 }
  91
  92 static void
  93 acc_unref (gpointer data)
  94 {
  95         AtkStateSet * ss;
  96
  97         g_object_set_data (G_OBJECT (data), HTML_ID, NULL);
  98         ss = atk_object_ref_state_set (data);
  99
 100         atk_state_set_add_state (ss, ATK_STATE_DEFUNCT);
 101         atk_object_notify_state_change (data, ATK_STATE_DEFUNCT, TRUE);
 102         g_object_unref (G_OBJECT (data));
 103 }
 104
 105 AtkObject *
 106 html_utils_get_accessible (HTMLObject *o,
 107                            AtkObject *parent)
 108 {
 109         AtkObject *accessible;
 110
 111         g_return_val_if_fail (o != NULL, NULL);
 112
 113         accessible = html_object_get_data_nocp (o, ACCESSIBLE_ID);
 114
 115         if (!accessible) {
 116                 accessible = create_accessible (o, parent);
 117                 if (accessible) {
 118                         g_object_ref (accessible);
 119                         html_object_set_data_full_nocp (o, ACCESSIBLE_ID, accessible, acc_unref);
 120                 }
 121         }
 122
 123         return accessible;
 124 }