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, 2002 Sun Microsystems Inc.,
   6  * Copyright 2001, 2002 Ximian, Inc.
   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
  19  * License along with this library; if not, write to the
  20  * Free Software Foundation, Inc., 59 Temple Place - Suite 330,
  21  * Boston, MA 02111-1307, USA.
  22  */
  23
  24 /* stateset.c : implements the StateSet interface */
  25
  26 #include <config.h>
  27 #include <stdio.h>
  28 #include <libspi/stateset.h>
  29
  30
  31 static Accessibility_StateType *accessible_state_types = NULL;
  32 static AtkStateType *atk_state_types = NULL;
  33
  34
  35 static gboolean
  36 spi_init_state_type_tables (void)
  37 {
  38   gint i;
  39
  40   if (accessible_state_types || atk_state_types)
  41     return FALSE;
  42   if (!accessible_state_types)
  43     accessible_state_types = g_new (Accessibility_StateType, ATK_STATE_LAST_DEFINED);
  44   if (!atk_state_types)
  45     atk_state_types = g_new (AtkStateType, Accessibility_STATE_LAST_DEFINED);
  46   g_return_val_if_fail (accessible_state_types, FALSE);
  47   g_return_val_if_fail (atk_state_types, FALSE);
  48
  49   for (i = 0; i < Accessibility_STATE_LAST_DEFINED; i++)
  50     {
  51       atk_state_types[i] = ATK_STATE_INVALID;
  52     }
  53
  54   for (i=0; i < ATK_STATE_LAST_DEFINED; i++)
  55     {
  56       accessible_state_types[i] = Accessibility_STATE_INVALID;
  57     }
  58
  59   accessible_state_types[ATK_STATE_ACTIVE] = Accessibility_STATE_ACTIVE;
  60   atk_state_types[Accessibility_STATE_ACTIVE] = ATK_STATE_ACTIVE;
  61   accessible_state_types[ATK_STATE_ARMED] = Accessibility_STATE_ARMED;
  62   atk_state_types[Accessibility_STATE_ARMED] = ATK_STATE_ARMED;
  63   accessible_state_types[ATK_STATE_BUSY] = Accessibility_STATE_BUSY;
  64   atk_state_types[Accessibility_STATE_BUSY] = ATK_STATE_BUSY;
  65   accessible_state_types[ATK_STATE_CHECKED] = Accessibility_STATE_CHECKED;
  66   atk_state_types[Accessibility_STATE_CHECKED] = ATK_STATE_CHECKED;
  67   accessible_state_types[ATK_STATE_DEFUNCT] = Accessibility_STATE_DEFUNCT;
  68   atk_state_types[Accessibility_STATE_DEFUNCT] = ATK_STATE_DEFUNCT;
  69   accessible_state_types[ATK_STATE_EDITABLE] = Accessibility_STATE_EDITABLE;
  70   atk_state_types[Accessibility_STATE_EDITABLE] = ATK_STATE_EDITABLE;
  71   accessible_state_types[ATK_STATE_ENABLED] = Accessibility_STATE_ENABLED;
  72   atk_state_types[Accessibility_STATE_ENABLED] = ATK_STATE_ENABLED;
  73   accessible_state_types[ATK_STATE_EXPANDABLE] = Accessibility_STATE_EXPANDABLE;
  74   atk_state_types[Accessibility_STATE_EXPANDABLE] = ATK_STATE_EXPANDABLE;
  75   accessible_state_types[ATK_STATE_EXPANDED] = Accessibility_STATE_EXPANDED;
  76   atk_state_types[Accessibility_STATE_EXPANDED] = ATK_STATE_EXPANDED;
  77   accessible_state_types[ATK_STATE_FOCUSABLE] = Accessibility_STATE_FOCUSABLE;
  78   atk_state_types[Accessibility_STATE_FOCUSABLE] = ATK_STATE_FOCUSABLE;
  79   accessible_state_types[ATK_STATE_FOCUSED] = Accessibility_STATE_FOCUSED;
  80   atk_state_types[Accessibility_STATE_FOCUSED] = ATK_STATE_FOCUSED;
  81   accessible_state_types[ATK_STATE_HORIZONTAL] = Accessibility_STATE_HORIZONTAL;
  82   atk_state_types[Accessibility_STATE_HORIZONTAL] = ATK_STATE_HORIZONTAL;
  83   accessible_state_types[ATK_STATE_ICONIFIED] = Accessibility_STATE_ICONIFIED;
  84   atk_state_types[Accessibility_STATE_ICONIFIED] = ATK_STATE_ICONIFIED;
  85   accessible_state_types[ATK_STATE_MODAL] = Accessibility_STATE_MODAL;
  86   atk_state_types[Accessibility_STATE_MODAL] = ATK_STATE_MODAL;
  87   accessible_state_types[ATK_STATE_MULTI_LINE] = Accessibility_STATE_MULTI_LINE;
  88   atk_state_types[Accessibility_STATE_MULTI_LINE] = ATK_STATE_MULTI_LINE;
  89   accessible_state_types[ATK_STATE_MULTISELECTABLE] = Accessibility_STATE_MULTISELECTABLE;
  90   atk_state_types[Accessibility_STATE_MULTISELECTABLE] = ATK_STATE_MULTISELECTABLE;
  91   accessible_state_types[ATK_STATE_OPAQUE] = Accessibility_STATE_OPAQUE;
  92   atk_state_types[Accessibility_STATE_OPAQUE] = ATK_STATE_OPAQUE;
  93   accessible_state_types[ATK_STATE_PRESSED] = Accessibility_STATE_PRESSED;
  94   atk_state_types[Accessibility_STATE_PRESSED] = ATK_STATE_PRESSED;
  95   accessible_state_types[ATK_STATE_RESIZABLE] = Accessibility_STATE_RESIZABLE;
  96   atk_state_types[Accessibility_STATE_RESIZABLE] = ATK_STATE_RESIZABLE;
  97   accessible_state_types[ATK_STATE_SELECTABLE] = Accessibility_STATE_SELECTABLE;
  98   atk_state_types[Accessibility_STATE_SELECTABLE] = ATK_STATE_SELECTABLE;
  99   accessible_state_types[ATK_STATE_SELECTED] = Accessibility_STATE_SELECTED;
 100   atk_state_types[Accessibility_STATE_SELECTED] = ATK_STATE_SELECTED;
 101   accessible_state_types[ATK_STATE_SENSITIVE] = Accessibility_STATE_SENSITIVE;
 102   atk_state_types[Accessibility_STATE_SENSITIVE] = ATK_STATE_SENSITIVE;
 103   accessible_state_types[ATK_STATE_SHOWING] = Accessibility_STATE_SHOWING;
 104   atk_state_types[Accessibility_STATE_SHOWING] = ATK_STATE_SHOWING;
 105   accessible_state_types[ATK_STATE_SINGLE_LINE] = Accessibility_STATE_SINGLE_LINE;
 106   atk_state_types[Accessibility_STATE_SINGLE_LINE] = ATK_STATE_SINGLE_LINE;
 107   accessible_state_types[ATK_STATE_STALE] = Accessibility_STATE_STALE;
 108   atk_state_types[Accessibility_STATE_STALE] = ATK_STATE_STALE;
 109   accessible_state_types[ATK_STATE_TRANSIENT] = Accessibility_STATE_TRANSIENT;
 110   atk_state_types[Accessibility_STATE_TRANSIENT] = ATK_STATE_TRANSIENT;
 111   accessible_state_types[ATK_STATE_VERTICAL] = Accessibility_STATE_VERTICAL;
 112   atk_state_types[Accessibility_STATE_VERTICAL] = ATK_STATE_VERTICAL;
 113   accessible_state_types[ATK_STATE_VISIBLE] = Accessibility_STATE_VISIBLE;
 114   atk_state_types[Accessibility_STATE_VISIBLE] = ATK_STATE_VISIBLE;
 115   accessible_state_types[ATK_STATE_MANAGES_DESCENDANTS] = Accessibility_STATE_MANAGES_DESCENDANTS;
 116   atk_state_types[Accessibility_STATE_MANAGES_DESCENDANTS] = ATK_STATE_MANAGES_DESCENDANTS;
 117   accessible_state_types[ATK_STATE_INDETERMINATE] = Accessibility_STATE_INDETERMINATE;
 118   atk_state_types[Accessibility_STATE_INDETERMINATE] = ATK_STATE_INDETERMINATE;
 119
 120   return TRUE;
 121 }
 122
 123 static inline AtkState
 124 state_spi_to_atk (Accessibility_StateType state)
 125 {
 126   guint idx = state;
 127   if (idx < Accessibility_STATE_LAST_DEFINED)
 128     return atk_state_types [idx];
 129   else
 130     return ATK_STATE_INVALID;
 131 }
 132
 133 AtkState
 134 spi_atk_state_from_spi_state (Accessibility_StateType state)
 135 {
 136   spi_init_state_type_tables ();
 137   return state_spi_to_atk (state);
 138 }
 139
 140 static AtkStateSet *
 141 atk_state_set_from_servant (PortableServer_Servant servant)
 142 {
 143   SpiBase *base = SPI_BASE (bonobo_object_from_servant(servant));
 144
 145   g_return_val_if_fail (base, NULL);
 146   return  ATK_STATE_SET(base->gobj);
 147 }
 148
 149 AtkStateSet *
 150 spi_state_set_cache_from_sequence (const Accessibility_StateSeq *seq)
 151 {
 152   int i;
 153   AtkStateSet *set;
 154   AtkStateType *states;
 155
 156   spi_init_state_type_tables ();
 157
 158   states = g_newa (AtkStateType, seq->_length);
 159   for (i = 0; i < seq->_length; i++)
 160     states [i] = state_spi_to_atk (seq->_buffer [i]);
 161
 162   set = atk_state_set_new ();
 163   atk_state_set_add_states (set, states, seq->_length);
 164
 165   return set;
 166 }
 167
 168 static AtkStateSet *
 169 atk_state_set_from_accessibility_state_set (Accessibility_StateSet set, CORBA_Environment *ev)
 170 {
 171   AtkStateSet *rv;
 172   Accessibility_StateSeq *seq;
 173
 174   seq = Accessibility_StateSet_getStates (set, ev);
 175   rv = spi_state_set_cache_from_sequence (seq);
 176   CORBA_free (seq);
 177
 178   return rv;
 179 }
 180
 181
 182 SpiStateSet *
 183 spi_state_set_new (AtkStateSet *obj)
 184 {
 185   SpiStateSet *new_set = g_object_new (SPI_STATE_SET_TYPE, NULL);
 186   spi_base_construct (SPI_BASE (new_set), G_OBJECT (obj));
 187   return new_set;
 188 }
 189
 190
 191 static CORBA_boolean
 192 impl_contains (PortableServer_Servant servant,
 193                const Accessibility_StateType state,
 194                CORBA_Environment * ev)
 195 {
 196   AtkStateSet *set = atk_state_set_from_servant (servant);
 197
 198   g_return_val_if_fail (set, FALSE);
 199   return atk_state_set_contains_state (set, state_spi_to_atk (state));
 200 }
 201
 202
 203 static void
 204 impl_add (PortableServer_Servant servant,
 205           const Accessibility_StateType state,
 206           CORBA_Environment * ev)
 207 {
 208   AtkStateSet *set = atk_state_set_from_servant (servant);
 209
 210   g_return_if_fail (set);
 211   atk_state_set_add_state (set, state_spi_to_atk (state));
 212 }
 213
 214
 215 static void
 216 impl_remove (PortableServer_Servant servant,
 217              const Accessibility_StateType state,
 218              CORBA_Environment * ev)
 219 {
 220   AtkStateSet *set = atk_state_set_from_servant (servant);
 221
 222   g_return_if_fail (set);
 223   atk_state_set_remove_state (set, state_spi_to_atk (state));
 224 }
 225
 226
 227 static CORBA_boolean
 228 impl_equals (PortableServer_Servant servant,
 229              const Accessibility_StateSet stateSet,
 230              CORBA_Environment * ev)
 231 {
 232   AtkStateSet *set = atk_state_set_from_servant (servant);
 233   AtkStateSet *set2, *return_set;
 234   CORBA_boolean rv;
 235
 236   g_return_val_if_fail (set, FALSE);
 237
 238   set2 = atk_state_set_from_accessibility_state_set (stateSet, ev);
 239   g_return_val_if_fail (set2, FALSE);
 240
 241   return_set = atk_state_set_xor_sets (set, set2);
 242   g_object_unref (G_OBJECT(set2));
 243   if (return_set)
 244     {
 245       rv = atk_state_set_is_empty (return_set);
 246       g_object_unref (G_OBJECT(return_set));
 247     }
 248   else
 249     rv = FALSE;
 250   return rv;
 251 }
 252
 253
 254 static Accessibility_StateSet
 255 impl_compare (PortableServer_Servant servant,
 256               const Accessibility_StateSet compareState,
 257               CORBA_Environment * ev)
 258 {
 259   AtkStateSet *set = atk_state_set_from_servant (servant);
 260   AtkStateSet *set2, *return_set;
 261   SpiStateSet *spi_set;
 262
 263   g_return_val_if_fail (set, FALSE);
 264
 265   set2 = atk_state_set_from_accessibility_state_set (compareState, ev);
 266   g_return_val_if_fail (set2, CORBA_OBJECT_NIL);
 267
 268   return_set = atk_state_set_xor_sets (set, set2);
 269   g_object_unref (G_OBJECT(set2));
 270   spi_set = spi_state_set_new (return_set);
 271   return bonobo_object_corba_objref (BONOBO_OBJECT(spi_set));
 272 }
 273
 274
 275 static CORBA_boolean
 276 impl_isEmpty (PortableServer_Servant servant,
 277               CORBA_Environment * ev)
 278 {
 279   AtkStateSet *set = atk_state_set_from_servant (servant);
 280
 281   g_return_val_if_fail (set, TRUE);
 282   return atk_state_set_is_empty (set);
 283 }
 284
 285
 286 static Accessibility_StateSeq *
 287 impl_getStates (PortableServer_Servant servant,
 288                 CORBA_Environment * ev)
 289 {
 290   AtkStateSet *set = atk_state_set_from_servant (servant);
 291   GSList *states = NULL;
 292   GSList *tmp;
 293   gint i = 0;
 294   Accessibility_StateSeq *rv;
 295
 296   g_return_val_if_fail (set, CORBA_OBJECT_NIL);
 297
 298   /* Argh-- this is bad!!! */
 299
 300   if (atk_state_set_contains_state (set, ATK_STATE_ACTIVE))
 301     states = g_slist_append (states, (gpointer) Accessibility_STATE_ACTIVE);
 302   if (atk_state_set_contains_state (set, ATK_STATE_ARMED))
 303     states = g_slist_append (states, (gpointer) Accessibility_STATE_ARMED);
 304   if (atk_state_set_contains_state (set, ATK_STATE_BUSY))
 305     states = g_slist_append (states, (gpointer) Accessibility_STATE_BUSY);
 306   if (atk_state_set_contains_state (set, ATK_STATE_CHECKED))
 307     states = g_slist_append (states, (gpointer) Accessibility_STATE_CHECKED);
 308   if (atk_state_set_contains_state (set, ATK_STATE_DEFUNCT))
 309     states = g_slist_append (states, (gpointer) Accessibility_STATE_DEFUNCT);
 310   if (atk_state_set_contains_state (set, ATK_STATE_EDITABLE))
 311     states = g_slist_append (states, (gpointer) Accessibility_STATE_EDITABLE);
 312   if (atk_state_set_contains_state (set, ATK_STATE_ENABLED))
 313     states = g_slist_append (states, (gpointer) Accessibility_STATE_ENABLED);
 314   if (atk_state_set_contains_state (set, ATK_STATE_EXPANDABLE))
 315     states = g_slist_append (states, (gpointer) Accessibility_STATE_EXPANDABLE);
 316   if (atk_state_set_contains_state (set, ATK_STATE_EXPANDED))
 317     states = g_slist_append (states, (gpointer) Accessibility_STATE_EXPANDED);
 318   if (atk_state_set_contains_state (set, ATK_STATE_FOCUSABLE))
 319     states = g_slist_append (states, (gpointer) Accessibility_STATE_FOCUSABLE);
 320   if (atk_state_set_contains_state (set, ATK_STATE_FOCUSED))
 321     states = g_slist_append (states, (gpointer) Accessibility_STATE_FOCUSED);
 322   if (atk_state_set_contains_state (set, ATK_STATE_HORIZONTAL))
 323     states = g_slist_append (states, (gpointer) Accessibility_STATE_HORIZONTAL);
 324   if (atk_state_set_contains_state (set, ATK_STATE_ICONIFIED))
 325     states = g_slist_append (states, (gpointer) Accessibility_STATE_ICONIFIED);
 326   if (atk_state_set_contains_state (set, ATK_STATE_MODAL))
 327     states = g_slist_append (states, (gpointer) Accessibility_STATE_MODAL);
 328   if (atk_state_set_contains_state (set, ATK_STATE_MULTI_LINE))
 329     states = g_slist_append (states, (gpointer) Accessibility_STATE_MULTI_LINE);
 330   if (atk_state_set_contains_state (set, ATK_STATE_MULTISELECTABLE))
 331     states = g_slist_append (states, (gpointer) Accessibility_STATE_MULTISELECTABLE);
 332   if (atk_state_set_contains_state (set, ATK_STATE_OPAQUE))
 333     states = g_slist_append (states, (gpointer) Accessibility_STATE_OPAQUE);
 334   if (atk_state_set_contains_state (set, ATK_STATE_PRESSED))
 335     states = g_slist_append (states, (gpointer) Accessibility_STATE_PRESSED);
 336   if (atk_state_set_contains_state (set, ATK_STATE_RESIZABLE))
 337     states = g_slist_append (states, (gpointer) Accessibility_STATE_RESIZABLE);
 338   if (atk_state_set_contains_state (set, ATK_STATE_SELECTABLE))
 339     states = g_slist_append (states, (gpointer) Accessibility_STATE_SELECTABLE);
 340   if (atk_state_set_contains_state (set, ATK_STATE_SELECTED))
 341     states = g_slist_append (states, (gpointer) Accessibility_STATE_SELECTED);
 342   if (atk_state_set_contains_state (set, ATK_STATE_SENSITIVE))
 343     states = g_slist_append (states, (gpointer) Accessibility_STATE_SENSITIVE);
 344   if (atk_state_set_contains_state (set, ATK_STATE_SHOWING))
 345     states = g_slist_append (states, (gpointer) Accessibility_STATE_SHOWING);
 346   if (atk_state_set_contains_state (set, ATK_STATE_SINGLE_LINE))
 347     states = g_slist_append (states, (gpointer) Accessibility_STATE_SINGLE_LINE);
 348   if (atk_state_set_contains_state (set, ATK_STATE_STALE))
 349     states = g_slist_append (states, (gpointer) Accessibility_STATE_STALE);
 350   if (atk_state_set_contains_state (set, ATK_STATE_TRANSIENT))
 351     states = g_slist_append (states, (gpointer) Accessibility_STATE_TRANSIENT);
 352   if (atk_state_set_contains_state (set, ATK_STATE_VERTICAL))
 353     states = g_slist_append (states, (gpointer) Accessibility_STATE_VERTICAL);
 354   if (atk_state_set_contains_state (set, ATK_STATE_VISIBLE))
 355     states = g_slist_append (states, (gpointer) Accessibility_STATE_VISIBLE);
 356   if (atk_state_set_contains_state (set, ATK_STATE_MANAGES_DESCENDANTS))
 357     states = g_slist_append (states, (gpointer) Accessibility_STATE_MANAGES_DESCENDANTS);
 358   if (atk_state_set_contains_state (set, ATK_STATE_INDETERMINATE))
 359     states = g_slist_append (states, (gpointer) Accessibility_STATE_INDETERMINATE);
 360
 361   rv = Accessibility_StateSeq__alloc ();
 362   rv->_length = rv->_maximum = g_slist_length (states);
 363   rv->_buffer = Accessibility_StateSeq_allocbuf (rv->_length);
 364   tmp = states;
 365   while (tmp)
 366     {
 367       rv->_buffer[i++] = (Accessibility_StateType) tmp->data;
 368       tmp = tmp->next;
 369     }
 370   g_slist_free (states);
 371   return rv;
 372 }
 373
 374
 375 static void
 376 spi_state_set_class_init (SpiStateSetClass *klass)
 377 {
 378   POA_Accessibility_StateSet__epv *epv = &klass->epv;
 379
 380   spi_init_state_type_tables ();
 381   epv->contains = impl_contains;
 382   epv->add = impl_add;
 383   epv->remove = impl_remove;
 384   epv->equals = impl_equals;
 385   epv->compare = impl_compare;
 386   epv->isEmpty = impl_isEmpty;
 387   epv->getStates = impl_getStates;
 388 }
 389
 390
 391 static void
 392 spi_state_set_init (SpiStateSet *set)
 393 {
 394 }
 395
 396
 397 BONOBO_TYPE_FUNC_FULL (SpiStateSet,
 398                        Accessibility_StateSet,
 399                        SPI_TYPE_BASE,
 400                        spi_state_set)