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
 118   return TRUE;
 119 }
 120
 121 static inline AtkState
 122 state_spi_to_atk (Accessibility_StateType state)
 123 {
 124   guint idx = state;
 125   if (idx < Accessibility_STATE_LAST_DEFINED)
 126     return atk_state_types [idx];
 127   else
 128     return ATK_STATE_INVALID;
 129 }
 130
 131 AtkState
 132 spi_atk_state_from_spi_state (Accessibility_StateType state)
 133 {
 134   spi_init_state_type_tables ();
 135   return state_spi_to_atk (state);
 136 }
 137
 138 static AtkStateSet *
 139 atk_state_set_from_servant (PortableServer_Servant servant)
 140 {
 141   SpiBase *base = SPI_BASE (bonobo_object_from_servant(servant));
 142
 143   g_return_val_if_fail (base, NULL);
 144   return  ATK_STATE_SET(base->gobj);
 145 }
 146
 147 AtkStateSet *
 148 spi_state_set_cache_from_sequence (const Accessibility_StateSeq *seq)
 149 {
 150   int i;
 151   AtkStateSet *set;
 152   AtkStateType *states;
 153
 154   spi_init_state_type_tables ();
 155
 156   states = g_newa (AtkStateType, seq->_length);
 157   for (i = 0; i < seq->_length; i++)
 158     states [i] = state_spi_to_atk (seq->_buffer [i]);
 159
 160   set = atk_state_set_new ();
 161   atk_state_set_add_states (set, states, seq->_length);
 162
 163   return set;
 164 }
 165
 166 static AtkStateSet *
 167 atk_state_set_from_accessibility_state_set (Accessibility_StateSet set, CORBA_Environment *ev)
 168 {
 169   AtkStateSet *rv;
 170   Accessibility_StateSeq *seq;
 171
 172   seq = Accessibility_StateSet_getStates (set, ev);
 173   rv = spi_state_set_cache_from_sequence (seq);
 174   CORBA_free (seq);
 175
 176   return rv;
 177 }
 178
 179
 180 SpiStateSet *
 181 spi_state_set_new (AtkStateSet *obj)
 182 {
 183   SpiStateSet *new_set = g_object_new (SPI_STATE_SET_TYPE, NULL);
 184   spi_base_construct (SPI_BASE (new_set), G_OBJECT (obj));
 185   return new_set;
 186 }
 187
 188
 189 static CORBA_boolean
 190 impl_contains (PortableServer_Servant servant,
 191                const Accessibility_StateType state,
 192                CORBA_Environment * ev)
 193 {
 194   AtkStateSet *set = atk_state_set_from_servant (servant);
 195
 196   g_return_val_if_fail (set, FALSE);
 197   return atk_state_set_contains_state (set, state_spi_to_atk (state));
 198 }
 199
 200
 201 static void
 202 impl_add (PortableServer_Servant servant,
 203           const Accessibility_StateType state,
 204           CORBA_Environment * ev)
 205 {
 206   AtkStateSet *set = atk_state_set_from_servant (servant);
 207
 208   g_return_if_fail (set);
 209   atk_state_set_add_state (set, state_spi_to_atk (state));
 210 }
 211
 212
 213 static void
 214 impl_remove (PortableServer_Servant servant,
 215              const Accessibility_StateType state,
 216              CORBA_Environment * ev)
 217 {
 218   AtkStateSet *set = atk_state_set_from_servant (servant);
 219
 220   g_return_if_fail (set);
 221   atk_state_set_remove_state (set, state_spi_to_atk (state));
 222 }
 223
 224
 225 static CORBA_boolean
 226 impl_equals (PortableServer_Servant servant,
 227              const Accessibility_StateSet stateSet,
 228              CORBA_Environment * ev)
 229 {
 230   AtkStateSet *set = atk_state_set_from_servant (servant);
 231   AtkStateSet *set2, *return_set;
 232   CORBA_boolean rv;
 233
 234   g_return_val_if_fail (set, FALSE);
 235
 236   set2 = atk_state_set_from_accessibility_state_set (stateSet, ev);
 237   g_return_val_if_fail (set2, FALSE);
 238
 239   return_set = atk_state_set_xor_sets (set, set2);
 240   g_object_unref (G_OBJECT(set2));
 241   if (return_set)
 242     {
 243       rv = atk_state_set_is_empty (return_set);
 244       g_object_unref (G_OBJECT(return_set));
 245     }
 246   else
 247     rv = FALSE;
 248   return rv;
 249 }
 250
 251
 252 static Accessibility_StateSet
 253 impl_compare (PortableServer_Servant servant,
 254               const Accessibility_StateSet compareState,
 255               CORBA_Environment * ev)
 256 {
 257   AtkStateSet *set = atk_state_set_from_servant (servant);
 258   AtkStateSet *set2, *return_set;
 259   SpiStateSet *spi_set;
 260
 261   g_return_val_if_fail (set, FALSE);
 262
 263   set2 = atk_state_set_from_accessibility_state_set (compareState, ev);
 264   g_return_val_if_fail (set2, CORBA_OBJECT_NIL);
 265
 266   return_set = atk_state_set_xor_sets (set, set2);
 267   g_object_unref (G_OBJECT(set2));
 268   spi_set = spi_state_set_new (return_set);
 269   return bonobo_object_corba_objref (BONOBO_OBJECT(spi_set));
 270 }
 271
 272
 273 static CORBA_boolean
 274 impl_isEmpty (PortableServer_Servant servant,
 275               CORBA_Environment * ev)
 276 {
 277   AtkStateSet *set = atk_state_set_from_servant (servant);
 278
 279   g_return_val_if_fail (set, TRUE);
 280   return atk_state_set_is_empty (set);
 281 }
 282
 283
 284 static Accessibility_StateSeq *
 285 impl_getStates (PortableServer_Servant servant,
 286                 CORBA_Environment * ev)
 287 {
 288   AtkStateSet *set = atk_state_set_from_servant (servant);
 289   GSList *states = NULL;
 290   GSList *tmp;
 291   gint i = 0;
 292   Accessibility_StateSeq *rv;
 293
 294   g_return_val_if_fail (set, CORBA_OBJECT_NIL);
 295
 296   /* Argh-- this is bad!!! */
 297
 298   if (atk_state_set_contains_state (set, ATK_STATE_ACTIVE))
 299     states = g_slist_append (states, (gpointer) Accessibility_STATE_ACTIVE);
 300   if (atk_state_set_contains_state (set, ATK_STATE_ARMED))
 301     states = g_slist_append (states, (gpointer) Accessibility_STATE_ARMED);
 302   if (atk_state_set_contains_state (set, ATK_STATE_BUSY))
 303     states = g_slist_append (states, (gpointer) Accessibility_STATE_BUSY);
 304   if (atk_state_set_contains_state (set, ATK_STATE_CHECKED))
 305     states = g_slist_append (states, (gpointer) Accessibility_STATE_CHECKED);
 306   if (atk_state_set_contains_state (set, ATK_STATE_DEFUNCT))
 307     states = g_slist_append (states, (gpointer) Accessibility_STATE_DEFUNCT);
 308   if (atk_state_set_contains_state (set, ATK_STATE_EDITABLE))
 309     states = g_slist_append (states, (gpointer) Accessibility_STATE_EDITABLE);
 310   if (atk_state_set_contains_state (set, ATK_STATE_ENABLED))
 311     states = g_slist_append (states, (gpointer) Accessibility_STATE_ENABLED);
 312   if (atk_state_set_contains_state (set, ATK_STATE_EXPANDABLE))
 313     states = g_slist_append (states, (gpointer) Accessibility_STATE_EXPANDABLE);
 314   if (atk_state_set_contains_state (set, ATK_STATE_EXPANDED))
 315     states = g_slist_append (states, (gpointer) Accessibility_STATE_EXPANDED);
 316   if (atk_state_set_contains_state (set, ATK_STATE_FOCUSABLE))
 317     states = g_slist_append (states, (gpointer) Accessibility_STATE_FOCUSABLE);
 318   if (atk_state_set_contains_state (set, ATK_STATE_FOCUSED))
 319     states = g_slist_append (states, (gpointer) Accessibility_STATE_FOCUSED);
 320   if (atk_state_set_contains_state (set, ATK_STATE_HORIZONTAL))
 321     states = g_slist_append (states, (gpointer) Accessibility_STATE_HORIZONTAL);
 322   if (atk_state_set_contains_state (set, ATK_STATE_ICONIFIED))
 323     states = g_slist_append (states, (gpointer) Accessibility_STATE_ICONIFIED);
 324   if (atk_state_set_contains_state (set, ATK_STATE_MODAL))
 325     states = g_slist_append (states, (gpointer) Accessibility_STATE_MODAL);
 326   if (atk_state_set_contains_state (set, ATK_STATE_MULTI_LINE))
 327     states = g_slist_append (states, (gpointer) Accessibility_STATE_MULTI_LINE);
 328   if (atk_state_set_contains_state (set, ATK_STATE_MULTISELECTABLE))
 329     states = g_slist_append (states, (gpointer) Accessibility_STATE_MULTISELECTABLE);
 330   if (atk_state_set_contains_state (set, ATK_STATE_OPAQUE))
 331     states = g_slist_append (states, (gpointer) Accessibility_STATE_OPAQUE);
 332   if (atk_state_set_contains_state (set, ATK_STATE_PRESSED))
 333     states = g_slist_append (states, (gpointer) Accessibility_STATE_PRESSED);
 334   if (atk_state_set_contains_state (set, ATK_STATE_RESIZABLE))
 335     states = g_slist_append (states, (gpointer) Accessibility_STATE_RESIZABLE);
 336   if (atk_state_set_contains_state (set, ATK_STATE_SELECTABLE))
 337     states = g_slist_append (states, (gpointer) Accessibility_STATE_SELECTABLE);
 338   if (atk_state_set_contains_state (set, ATK_STATE_SELECTED))
 339     states = g_slist_append (states, (gpointer) Accessibility_STATE_SELECTED);
 340   if (atk_state_set_contains_state (set, ATK_STATE_SENSITIVE))
 341     states = g_slist_append (states, (gpointer) Accessibility_STATE_SENSITIVE);
 342   if (atk_state_set_contains_state (set, ATK_STATE_SHOWING))
 343     states = g_slist_append (states, (gpointer) Accessibility_STATE_SHOWING);
 344   if (atk_state_set_contains_state (set, ATK_STATE_SINGLE_LINE))
 345     states = g_slist_append (states, (gpointer) Accessibility_STATE_SINGLE_LINE);
 346   if (atk_state_set_contains_state (set, ATK_STATE_STALE))
 347     states = g_slist_append (states, (gpointer) Accessibility_STATE_STALE);
 348   if (atk_state_set_contains_state (set, ATK_STATE_TRANSIENT))
 349     states = g_slist_append (states, (gpointer) Accessibility_STATE_TRANSIENT);
 350   if (atk_state_set_contains_state (set, ATK_STATE_VERTICAL))
 351     states = g_slist_append (states, (gpointer) Accessibility_STATE_VERTICAL);
 352   if (atk_state_set_contains_state (set, ATK_STATE_VISIBLE))
 353     states = g_slist_append (states, (gpointer) Accessibility_STATE_VISIBLE);
 354   if (atk_state_set_contains_state (set, ATK_STATE_MANAGES_DESCENDANTS))
 355     states = g_slist_append (states, (gpointer) Accessibility_STATE_MANAGES_DESCENDANTS);
 356
 357   rv = Accessibility_StateSeq__alloc ();
 358   rv->_length = rv->_maximum = g_slist_length (states);
 359   rv->_buffer = Accessibility_StateSeq_allocbuf (rv->_length);
 360   tmp = states;
 361   while (tmp)
 362     {
 363       rv->_buffer[i++] = (Accessibility_StateType) tmp->data;
 364       tmp = tmp->next;
 365     }
 366   g_slist_free (states);
 367   return rv;
 368 }
 369
 370
 371 static void
 372 spi_state_set_class_init (SpiStateSetClass *klass)
 373 {
 374   POA_Accessibility_StateSet__epv *epv = &klass->epv;
 375
 376   spi_init_state_type_tables ();
 377   epv->contains = impl_contains;
 378   epv->add = impl_add;
 379   epv->remove = impl_remove;
 380   epv->equals = impl_equals;
 381   epv->compare = impl_compare;
 382   epv->isEmpty = impl_isEmpty;
 383   epv->getStates = impl_getStates;
 384 }
 385
 386
 387 static void
 388 spi_state_set_init (SpiStateSet *set)
 389 {
 390 }
 391
 392
 393 BONOBO_TYPE_FUNC_FULL (SpiStateSet,
 394                        Accessibility_StateSet,
 395                        SPI_TYPE_BASE,
 396                        spi_state_set)