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