libspi/stateset.c

   1 /*
   2  * AT-SPI - Assistive Technology Service Provider Interface
   3  * (Gnome Accessibility Project; http://developer.gnome.org/projects/gap)
   4  *
   5  * Copyright 2001 Sun Microsystems Inc.
   6  *
   7  * This library is free software; you can redistribute it and/or
   8  * modify it under the terms of the GNU Library General Public
   9  * License as published by the Free Software Foundation; either
  10  * version 2 of the License, or (at your option) any later version.
  11  *
  12  * This library is distributed in the hope that it will be useful,
  13  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  14  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  15  * Library General Public License for more details.
  16  *
  17  * You should have received a copy of the GNU Library General Public
  18  * License along with this library; if not, write to the
  19  * Free Software Foundation, Inc., 59 Temple Place - Suite 330,
  20  * Boston, MA 02111-1307, USA.
  21  */
  22
  23 /* stateset.c : implements the StateSet interface */
  24
  25 #include <config.h>
  26 #include <stdio.h>
  27 #include <libspi/stateset.h>
  28
  29
  30 static Accessibility_StateType *accessible_state_types = NULL;
  31 static AtkStateType *atk_state_types = NULL;
  32
  33
  34 static gboolean
  35 spi_init_state_type_tables (void)
  36 {
  37   gint i;
  38
  39   if (accessible_state_types || atk_state_types)
  40     return FALSE;
  41   if (!accessible_state_types)
  42     accessible_state_types = g_new (Accessibility_StateType, Accessibility_STATE_LAST_DEFINED);
  43   if (!atk_state_types)
  44     atk_state_types = g_new (AtkStateType, ATK_STATE_LAST_DEFINED);
  45   g_return_val_if_fail (accessible_state_types, FALSE);
  46   g_return_val_if_fail (atk_state_types, FALSE);
  47
  48   accessible_state_types = g_new (Accessibility_StateType, ATK_STATE_LAST_DEFINED);
  49   atk_state_types = g_new (AtkStateType, ATK_STATE_LAST_DEFINED);
  50
  51   for (i = 0; i < ATK_STATE_LAST_DEFINED; i++)
  52     {
  53       atk_state_types[i] = ATK_STATE_INVALID;
  54       accessible_state_types[i] = Accessibility_STATE_INVALID;
  55     }
  56
  57   accessible_state_types[ATK_STATE_ACTIVE] = Accessibility_STATE_ACTIVE;
  58   atk_state_types[Accessibility_STATE_ACTIVE] = ATK_STATE_ACTIVE;
  59   accessible_state_types[ATK_STATE_ARMED] = Accessibility_STATE_ARMED;
  60   atk_state_types[Accessibility_STATE_ARMED] = ATK_STATE_ARMED;
  61   accessible_state_types[ATK_STATE_BUSY] = Accessibility_STATE_BUSY;
  62   atk_state_types[Accessibility_STATE_BUSY] = ATK_STATE_BUSY;
  63   accessible_state_types[ATK_STATE_CHECKED] = Accessibility_STATE_CHECKED;
  64   atk_state_types[Accessibility_STATE_CHECKED] = ATK_STATE_CHECKED;
  65   accessible_state_types[ATK_STATE_DEFUNCT] = Accessibility_STATE_DEFUNCT;
  66   atk_state_types[Accessibility_STATE_DEFUNCT] = ATK_STATE_DEFUNCT;
  67   accessible_state_types[ATK_STATE_EDITABLE] = Accessibility_STATE_EDITABLE;
  68   atk_state_types[Accessibility_STATE_EDITABLE] = ATK_STATE_EDITABLE;
  69   accessible_state_types[ATK_STATE_ENABLED] = Accessibility_STATE_ENABLED;
  70   atk_state_types[Accessibility_STATE_ENABLED] = ATK_STATE_ENABLED;
  71   accessible_state_types[ATK_STATE_EXPANDABLE] = Accessibility_STATE_EXPANDABLE;
  72   atk_state_types[Accessibility_STATE_EXPANDABLE] = ATK_STATE_EXPANDABLE;
  73   accessible_state_types[ATK_STATE_EXPANDED] = Accessibility_STATE_EXPANDED;
  74   atk_state_types[Accessibility_STATE_EXPANDED] = ATK_STATE_EXPANDED;
  75   accessible_state_types[ATK_STATE_FOCUSABLE] = Accessibility_STATE_FOCUSABLE;
  76   atk_state_types[Accessibility_STATE_FOCUSABLE] = ATK_STATE_FOCUSABLE;
  77   accessible_state_types[ATK_STATE_FOCUSED] = Accessibility_STATE_FOCUSED;
  78   atk_state_types[Accessibility_STATE_FOCUSED] = ATK_STATE_FOCUSED;
  79   accessible_state_types[ATK_STATE_HORIZONTAL] = Accessibility_STATE_HORIZONTAL;
  80   atk_state_types[Accessibility_STATE_HORIZONTAL] = ATK_STATE_HORIZONTAL;
  81   accessible_state_types[ATK_STATE_ICONIFIED] = Accessibility_STATE_ICONIFIED;
  82   atk_state_types[Accessibility_STATE_ICONIFIED] = ATK_STATE_ICONIFIED;
  83   accessible_state_types[ATK_STATE_MODAL] = Accessibility_STATE_MODAL;
  84   atk_state_types[Accessibility_STATE_MODAL] = ATK_STATE_MODAL;
  85   accessible_state_types[ATK_STATE_MULTI_LINE] = Accessibility_STATE_MULTI_LINE;
  86   atk_state_types[Accessibility_STATE_MULTI_LINE] = ATK_STATE_MULTI_LINE;
  87   accessible_state_types[ATK_STATE_MULTISELECTABLE] = Accessibility_STATE_MULTISELECTABLE;
  88   atk_state_types[Accessibility_STATE_MULTISELECTABLE] = ATK_STATE_MULTISELECTABLE;
  89   accessible_state_types[ATK_STATE_OPAQUE] = Accessibility_STATE_OPAQUE;
  90   atk_state_types[Accessibility_STATE_OPAQUE] = ATK_STATE_OPAQUE;
  91   accessible_state_types[ATK_STATE_PRESSED] = Accessibility_STATE_PRESSED;
  92   atk_state_types[Accessibility_STATE_PRESSED] = ATK_STATE_PRESSED;
  93   accessible_state_types[ATK_STATE_RESIZABLE] = Accessibility_STATE_RESIZABLE;
  94   atk_state_types[Accessibility_STATE_RESIZABLE] = ATK_STATE_RESIZABLE;
  95   accessible_state_types[ATK_STATE_SELECTABLE] = Accessibility_STATE_SELECTABLE;
  96   atk_state_types[Accessibility_STATE_SELECTABLE] = ATK_STATE_SELECTABLE;
  97   accessible_state_types[ATK_STATE_SELECTED] = Accessibility_STATE_SELECTED;
  98   atk_state_types[Accessibility_STATE_SELECTED] = ATK_STATE_SELECTED;
  99   accessible_state_types[ATK_STATE_SENSITIVE] = Accessibility_STATE_SENSITIVE;
 100   atk_state_types[Accessibility_STATE_SENSITIVE] = ATK_STATE_SENSITIVE;
 101   accessible_state_types[ATK_STATE_SHOWING] = Accessibility_STATE_SHOWING;
 102   atk_state_types[Accessibility_STATE_SHOWING] = ATK_STATE_SHOWING;
 103   accessible_state_types[ATK_STATE_SINGLE_LINE] = Accessibility_STATE_SINGLE_LINE;
 104   atk_state_types[Accessibility_STATE_SINGLE_LINE] = ATK_STATE_SINGLE_LINE;
 105   accessible_state_types[ATK_STATE_STALE] = Accessibility_STATE_STALE;
 106   atk_state_types[Accessibility_STATE_STALE] = ATK_STATE_STALE;
 107   accessible_state_types[ATK_STATE_TRANSIENT] = Accessibility_STATE_TRANSIENT;
 108   atk_state_types[Accessibility_STATE_TRANSIENT] = ATK_STATE_TRANSIENT;
 109   accessible_state_types[ATK_STATE_VERTICAL] = Accessibility_STATE_VERTICAL;
 110   atk_state_types[Accessibility_STATE_VERTICAL] = ATK_STATE_VERTICAL;
 111   accessible_state_types[ATK_STATE_VISIBLE] = Accessibility_STATE_VISIBLE;
 112   atk_state_types[Accessibility_STATE_VISIBLE] = ATK_STATE_VISIBLE;
 113
 114   return TRUE;
 115 }
 116
 117
 118
 119 static AtkStateSet *
 120 atk_state_set_from_servant (PortableServer_Servant servant)
 121 {
 122   SpiBase *base = SPI_BASE (bonobo_object_from_servant(servant));
 123
 124   g_return_val_if_fail (base, NULL);
 125   return  ATK_STATE_SET(base->gobj);
 126 }
 127
 128
 129
 130 static AtkStateSet *
 131 atk_state_set_from_accessibility_state_set (Accessibility_StateSet set, CORBA_Environment *ev)
 132 {
 133   AtkStateType *states, *tmp;
 134   AtkStateSet *rv;
 135   gint i;
 136   Accessibility_StateSeq *seq;
 137
 138   seq = Accessibility_StateSet_getStates (set, ev);
 139   states = tmp = g_new (AtkStateType, seq->_length);
 140   for (i = 0; i < seq->_length; i++)
 141     *tmp++ = atk_state_types[seq->_buffer[i]];
 142   rv = atk_state_set_new ();
 143   atk_state_set_add_states (rv, states, seq->_length);
 144   CORBA_free (seq);
 145   g_free (states);
 146   return rv;
 147 }
 148
 149
 150
 151 SpiStateSet *
 152 spi_state_set_new (AtkStateSet *obj)
 153 {
 154   SpiStateSet *new_set = g_object_new (SPI_STATE_SET_TYPE, NULL);
 155   spi_base_construct (SPI_BASE (new_set), G_OBJECT (obj));
 156   return new_set;
 157 }
 158
 159
 160
 161 static CORBA_boolean
 162 impl_contains (PortableServer_Servant servant,
 163                const Accessibility_StateType state,
 164                CORBA_Environment * ev)
 165 {
 166   AtkStateSet *set = atk_state_set_from_servant (servant);
 167
 168   g_return_val_if_fail (set, FALSE);
 169   return (CORBA_boolean)
 170     atk_state_set_contains_state (set, atk_state_types[state]);
 171 }
 172
 173
 174
 175 static void
 176 impl_add(PortableServer_Servant servant,
 177     const Accessibility_StateType state,
 178     CORBA_Environment * ev)
 179 {
 180   AtkStateSet *set = atk_state_set_from_servant (servant);
 181
 182   g_return_if_fail (set);
 183   atk_state_set_add_state (set, atk_state_types[state]);
 184 }
 185
 186
 187
 188 static void
 189 impl_remove (PortableServer_Servant servant,
 190              const Accessibility_StateType state,
 191              CORBA_Environment * ev)
 192 {
 193   AtkStateSet *set = atk_state_set_from_servant (servant);
 194
 195   g_return_if_fail (set);
 196   atk_state_set_remove_state (set, atk_state_types[state]);
 197 }
 198
 199
 200
 201 static CORBA_boolean
 202 impl_equals (PortableServer_Servant servant,
 203              const Accessibility_StateSet stateSet,
 204              CORBA_Environment * ev)
 205 {
 206   AtkStateSet *set = atk_state_set_from_servant (servant);
 207   AtkStateSet *set2, *return_set;
 208   CORBA_boolean rv;
 209
 210   g_return_val_if_fail (set, FALSE);
 211
 212   set2 = atk_state_set_from_accessibility_state_set (stateSet, ev);
 213   g_return_val_if_fail (set2, FALSE);
 214
 215   return_set = atk_state_set_xor_sets (set, set2);
 216   g_object_unref (G_OBJECT(set2));
 217   if (return_set)
 218     {
 219       rv = (CORBA_boolean)
 220         atk_state_set_is_empty (return_set);
 221       g_object_unref (G_OBJECT(return_set));
 222     }
 223   else
 224     rv = FALSE;
 225   return rv;
 226 }
 227
 228
 229
 230 static Accessibility_StateSet
 231 impl_compare (PortableServer_Servant servant,
 232               const Accessibility_StateSet compareState,
 233               CORBA_Environment * ev)
 234 {
 235   AtkStateSet *set = atk_state_set_from_servant (servant);
 236   AtkStateSet *set2, *return_set;
 237   SpiStateSet *spi_set;
 238
 239   g_return_val_if_fail (set, FALSE);
 240
 241   set2 = atk_state_set_from_accessibility_state_set (compareState, ev);
 242   g_return_val_if_fail (set2, CORBA_OBJECT_NIL);
 243
 244   return_set = atk_state_set_xor_sets (set, set2);
 245   g_object_unref (G_OBJECT(set2));
 246   spi_set = spi_state_set_new (return_set);
 247   return bonobo_object_corba_objref (BONOBO_OBJECT(spi_set));
 248 }
 249
 250
 251
 252 static CORBA_boolean
 253 impl_isEmpty (PortableServer_Servant servant,
 254               CORBA_Environment * ev)
 255 {
 256   AtkStateSet *set = atk_state_set_from_servant (servant);
 257
 258   g_return_val_if_fail (set, TRUE);
 259   return (CORBA_boolean)
 260     atk_state_set_is_empty (set);
 261 }
 262
 263
 264
 265 static Accessibility_StateSeq *
 266 impl_getStates (PortableServer_Servant servant,
 267                 CORBA_Environment * ev)
 268 {
 269   AtkStateSet *set = atk_state_set_from_servant (servant);
 270   GSList *states = NULL;
 271   GSList *tmp;
 272   gint i = 0;
 273   Accessibility_StateSeq *rv;
 274
 275   g_return_val_if_fail (set, CORBA_OBJECT_NIL);
 276
 277   /* Argh-- this is bad!!! */
 278
 279   if (atk_state_set_contains_state (set, ATK_STATE_ACTIVE))
 280     states = g_slist_append (states, (gpointer) Accessibility_STATE_ACTIVE);
 281   if (atk_state_set_contains_state (set, ATK_STATE_ARMED))
 282     states = g_slist_append (states, (gpointer) Accessibility_STATE_ARMED);
 283   if (atk_state_set_contains_state (set, ATK_STATE_BUSY))
 284     states = g_slist_append (states, (gpointer) Accessibility_STATE_BUSY);
 285   if (atk_state_set_contains_state (set, ATK_STATE_CHECKED))
 286     states = g_slist_append (states, (gpointer) Accessibility_STATE_CHECKED);
 287   if (atk_state_set_contains_state (set, ATK_STATE_DEFUNCT))
 288     states = g_slist_append (states, (gpointer) Accessibility_STATE_DEFUNCT);
 289   if (atk_state_set_contains_state (set, ATK_STATE_EDITABLE))
 290     states = g_slist_append (states, (gpointer) Accessibility_STATE_EDITABLE);
 291   if (atk_state_set_contains_state (set, ATK_STATE_ENABLED))
 292     states = g_slist_append (states, (gpointer) Accessibility_STATE_ENABLED);
 293   if (atk_state_set_contains_state (set, ATK_STATE_EXPANDABLE))
 294     states = g_slist_append (states, (gpointer) Accessibility_STATE_EXPANDABLE);
 295   if (atk_state_set_contains_state (set, ATK_STATE_EXPANDED))
 296     states = g_slist_append (states, (gpointer) Accessibility_STATE_EXPANDED);
 297   if (atk_state_set_contains_state (set, ATK_STATE_FOCUSABLE))
 298     states = g_slist_append (states, (gpointer) Accessibility_STATE_FOCUSABLE);
 299   if (atk_state_set_contains_state (set, ATK_STATE_FOCUSED))
 300     states = g_slist_append (states, (gpointer) Accessibility_STATE_FOCUSED);
 301   if (atk_state_set_contains_state (set, ATK_STATE_HORIZONTAL))
 302     states = g_slist_append (states, (gpointer) Accessibility_STATE_HORIZONTAL);
 303   if (atk_state_set_contains_state (set, ATK_STATE_ICONIFIED))
 304     states = g_slist_append (states, (gpointer) Accessibility_STATE_ICONIFIED);
 305   if (atk_state_set_contains_state (set, ATK_STATE_MODAL))
 306     states = g_slist_append (states, (gpointer) Accessibility_STATE_MODAL);
 307   if (atk_state_set_contains_state (set, ATK_STATE_MULTI_LINE))
 308     states = g_slist_append (states, (gpointer) Accessibility_STATE_MULTI_LINE);
 309   if (atk_state_set_contains_state (set, ATK_STATE_MULTISELECTABLE))
 310     states = g_slist_append (states, (gpointer) Accessibility_STATE_MULTISELECTABLE);
 311   if (atk_state_set_contains_state (set, ATK_STATE_OPAQUE))
 312     states = g_slist_append (states, (gpointer) Accessibility_STATE_OPAQUE);
 313   if (atk_state_set_contains_state (set, ATK_STATE_PRESSED))
 314     states = g_slist_append (states, (gpointer) Accessibility_STATE_PRESSED);
 315   if (atk_state_set_contains_state (set, ATK_STATE_RESIZABLE))
 316     states = g_slist_append (states, (gpointer) Accessibility_STATE_RESIZABLE);
 317   if (atk_state_set_contains_state (set, ATK_STATE_SELECTABLE))
 318     states = g_slist_append (states, (gpointer) Accessibility_STATE_SELECTABLE);
 319   if (atk_state_set_contains_state (set, ATK_STATE_SELECTED))
 320     states = g_slist_append (states, (gpointer) Accessibility_STATE_SELECTED);
 321   if (atk_state_set_contains_state (set, ATK_STATE_SENSITIVE))
 322     states = g_slist_append (states, (gpointer) Accessibility_STATE_SENSITIVE);
 323   if (atk_state_set_contains_state (set, ATK_STATE_SHOWING))
 324     states = g_slist_append (states, (gpointer) Accessibility_STATE_SHOWING);
 325   if (atk_state_set_contains_state (set, ATK_STATE_SINGLE_LINE))
 326     states = g_slist_append (states, (gpointer) Accessibility_STATE_SINGLE_LINE);
 327   if (atk_state_set_contains_state (set, ATK_STATE_STALE))
 328     states = g_slist_append (states, (gpointer) Accessibility_STATE_STALE);
 329   if (atk_state_set_contains_state (set, ATK_STATE_TRANSIENT))
 330     states = g_slist_append (states, (gpointer) Accessibility_STATE_TRANSIENT);
 331   if (atk_state_set_contains_state (set, ATK_STATE_VERTICAL))
 332     states = g_slist_append (states, (gpointer) Accessibility_STATE_VERTICAL);
 333   if (atk_state_set_contains_state (set, ATK_STATE_VISIBLE))
 334     states = g_slist_append (states, (gpointer) Accessibility_STATE_VISIBLE);
 335
 336   rv = Accessibility_StateSeq__alloc ();
 337   rv->_length = rv->_maximum = g_slist_length (states);
 338   rv->_buffer = Accessibility_StateSeq_allocbuf (rv->_length);
 339   tmp = states;
 340   while (tmp)
 341     {
 342       rv->_buffer[i++] = (Accessibility_StateType) tmp->data;
 343       tmp = tmp->next;
 344     }
 345   g_slist_free (states);
 346   return rv;
 347 }
 348
 349
 350
 351 static void
 352 spi_state_set_class_init (SpiStateSetClass *klass)
 353 {
 354   POA_Accessibility_StateSet__epv *epv = &klass->epv;
 355
 356   spi_init_state_type_tables ();
 357   epv->contains = impl_contains;
 358   epv->add = impl_add;
 359   epv->remove = impl_remove;
 360   epv->equals = impl_equals;
 361   epv->compare = impl_compare;
 362   epv->isEmpty = impl_isEmpty;
 363   epv->getStates = impl_getStates;
 364 }
 365
 366
 367 static void
 368 spi_state_set_init (SpiStateSet *set)
 369 {
 370 }
 371
 372
 373 BONOBO_TYPE_FUNC_FULL (SpiStateSet,
 374                        Accessibility_StateSet,
 375                        SPI_TYPE_BASE,
 376                        spi_state_set);