[18421] | 1 | /* |
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| 2 | * AT-SPI - Assistive Technology Service Provider Interface |
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| 3 | * (Gnome Accessibility Project; http://developer.gnome.org/projects/gap) |
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| 4 | * |
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| 5 | * Copyright 2001 Sun Microsystems Inc. |
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| 6 | * |
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| 7 | * This library is free software; you can redistribute it and/or |
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| 8 | * modify it under the terms of the GNU Library General Public |
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| 9 | * License as published by the Free Software Foundation; either |
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| 10 | * version 2 of the License, or (at your option) any later version. |
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| 11 | * |
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| 12 | * This library is distributed in the hope that it will be useful, |
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| 13 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
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| 14 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
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| 15 | * Library General Public License for more details. |
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| 16 | * |
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| 17 | * You should have received a copy of the GNU Library General Public |
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| 18 | * License along with this library; if not, write to the |
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| 19 | * Free Software Foundation, Inc., 59 Temple Place - Suite 330, |
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| 20 | * Boston, MA 02111-1307, USA. |
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| 21 | */ |
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| 22 | |
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| 23 | /* application.c: implements SpiApplication.idl */ |
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| 24 | |
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| 25 | #include <string.h> |
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| 26 | #include <config.h> |
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| 27 | #include <atk/atkutil.h> |
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| 28 | #include <libspi/application.h> |
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| 29 | |
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| 30 | /* Our parent Gtk object type */ |
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| 31 | #define PARENT_TYPE SPI_ACCESSIBLE_TYPE |
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| 32 | |
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| 33 | /* A pointer to our parent object class */ |
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| 34 | static SpiAccessibleClass *spi_application_parent_class; |
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| 35 | |
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| 36 | static SpiApplication *the_app; |
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| 37 | |
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| 38 | /* static methods */ |
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| 39 | |
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| 40 | static void notify_listeners (GList *listeners, |
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| 41 | SpiAccessible *source, |
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| 42 | Accessibility_Event *e); |
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| 43 | |
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| 44 | static const char *reverse_lookup_name_for_toolkit_event (char *toolkit_name); |
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| 45 | |
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| 46 | static const char * |
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| 47 | lookup_toolkit_event_for_name (const char *generic_name) |
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| 48 | { |
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| 49 | char *toolkit_specific_name; |
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| 50 | SpiApplicationClass *klass = g_type_class_peek (SPI_APPLICATION_TYPE); |
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| 51 | #ifdef SPI_DEBUG |
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| 52 | fprintf (stderr, "looking for %s in hash table.\n", generic_name); |
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| 53 | #endif |
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| 54 | toolkit_specific_name = |
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| 55 | (char *) g_hash_table_lookup (klass->toolkit_event_names, generic_name); |
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| 56 | #ifdef SPI_DEBUG |
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| 57 | fprintf (stderr, "generic event %s converted to %s\n", generic_name, toolkit_specific_name); |
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| 58 | #endif |
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| 59 | return toolkit_specific_name; |
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| 60 | } |
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| 61 | |
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| 62 | /* |
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| 63 | * Implemented GObject::finalize |
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| 64 | */ |
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| 65 | static void |
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| 66 | spi_accessible_application_finalize (GObject *object) |
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| 67 | { |
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| 68 | GList *l; |
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| 69 | SpiApplication *application = (SpiApplication *) object; |
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| 70 | CORBA_Environment ev; |
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| 71 | |
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| 72 | CORBA_exception_init (&ev); |
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| 73 | |
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| 74 | for (l = application->toolkit_listeners; l; l = l->next) |
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| 75 | { |
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| 76 | CORBA_Object_release ((CORBA_Object) l->data, &ev); |
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| 77 | } |
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| 78 | |
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| 79 | CORBA_exception_free (&ev); |
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| 80 | |
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| 81 | g_list_free (application->toolkit_listeners); |
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| 82 | application->toolkit_listeners = NULL; |
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| 83 | |
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| 84 | g_print ("application finalize called\n"); |
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| 85 | (G_OBJECT_CLASS (spi_application_parent_class))->finalize (object); |
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| 86 | } |
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| 87 | |
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| 88 | static CORBA_string |
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| 89 | impl_accessibility_application_get_toolkit_name (PortableServer_Servant servant, |
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| 90 | CORBA_Environment *ev) |
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| 91 | { |
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| 92 | return CORBA_string_dup (atk_get_toolkit_name ()); |
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| 93 | } |
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| 94 | |
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| 95 | static CORBA_string |
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| 96 | impl_accessibility_application_get_version (PortableServer_Servant servant, |
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| 97 | CORBA_Environment *ev) |
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| 98 | { |
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| 99 | return CORBA_string_dup (atk_get_toolkit_version ()); |
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| 100 | } |
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| 101 | |
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| 102 | static CORBA_long |
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| 103 | impl_accessibility_application_get_id (PortableServer_Servant servant, |
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| 104 | CORBA_Environment *ev) |
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| 105 | { |
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| 106 | SpiApplication *application = SPI_APPLICATION ( |
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| 107 | bonobo_object_from_servant (servant)); |
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| 108 | |
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| 109 | return application->id; |
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| 110 | } |
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| 111 | |
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| 112 | static void |
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| 113 | impl_accessibility_application_set_id (PortableServer_Servant servant, |
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| 114 | const CORBA_long id, |
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| 115 | CORBA_Environment *ev) |
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| 116 | { |
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| 117 | SpiApplication *application = SPI_APPLICATION ( |
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| 118 | bonobo_object_from_servant (servant)); |
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| 119 | |
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| 120 | application->id = id; |
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| 121 | } |
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| 122 | |
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| 123 | static AtkObject * |
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| 124 | get_atk_object_ref (GObject *gobject) |
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| 125 | { |
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| 126 | AtkObject *aobject; |
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| 127 | |
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| 128 | if (ATK_IS_IMPLEMENTOR (gobject)) |
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| 129 | { |
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| 130 | aobject = atk_implementor_ref_accessible (ATK_IMPLEMENTOR (gobject)); |
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| 131 | } |
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| 132 | else if (ATK_IS_OBJECT (gobject)) |
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| 133 | { |
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| 134 | aobject = ATK_OBJECT (gobject); |
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| 135 | g_object_ref (G_OBJECT (aobject)); |
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| 136 | } |
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| 137 | else |
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| 138 | { |
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| 139 | aobject = NULL; |
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| 140 | g_error ("received event from non-AtkImplementor"); |
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| 141 | } |
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| 142 | |
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| 143 | return aobject; |
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| 144 | } |
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| 145 | |
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| 146 | static gboolean |
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| 147 | spi_application_object_event_listener (GSignalInvocationHint *signal_hint, |
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| 148 | guint n_param_values, |
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| 149 | const GValue *param_values, |
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| 150 | gpointer data) |
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| 151 | { |
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| 152 | Accessibility_Event e; |
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| 153 | AtkObject *aobject; |
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| 154 | SpiAccessible *source; |
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| 155 | GSignalQuery signal_query; |
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| 156 | gchar *event_name; |
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| 157 | const char *generic_name; |
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| 158 | |
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| 159 | g_return_val_if_fail (the_app != NULL, FALSE); |
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| 160 | |
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| 161 | g_signal_query (signal_hint->signal_id, &signal_query); |
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| 162 | |
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| 163 | /* TODO: move GTK reference out of app.c into bridge */ |
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| 164 | event_name = g_strdup_printf ("Gtk:%s:%s", |
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| 165 | g_type_name (signal_query.itype), |
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| 166 | signal_query.signal_name); |
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| 167 | |
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| 168 | generic_name = reverse_lookup_name_for_toolkit_event (event_name); |
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| 169 | |
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| 170 | fprintf (stderr, "Received (object) signal %s maps to '%s'\n", |
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| 171 | event_name, generic_name); |
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| 172 | |
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| 173 | g_free (event_name); |
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| 174 | |
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| 175 | g_return_val_if_fail (generic_name, FALSE); |
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| 176 | |
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| 177 | aobject = get_atk_object_ref (g_value_get_object (param_values + 0)); |
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| 178 | |
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| 179 | source = spi_accessible_new (aobject); |
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| 180 | e.type = CORBA_string_dup (generic_name); |
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| 181 | e.source = CORBA_OBJECT_NIL; |
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| 182 | e.detail1 = 0; |
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| 183 | e.detail2 = 0; |
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| 184 | |
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| 185 | notify_listeners (the_app->toolkit_listeners, source, &e); |
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| 186 | |
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| 187 | bonobo_object_unref (BONOBO_OBJECT (source)); |
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| 188 | |
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| 189 | g_object_unref (G_OBJECT (aobject)); |
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| 190 | |
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| 191 | return TRUE; |
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| 192 | } |
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| 193 | |
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| 194 | static gboolean |
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| 195 | spi_application_toolkit_event_listener (GSignalInvocationHint *signal_hint, |
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| 196 | guint n_param_values, |
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| 197 | const GValue *param_values, |
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| 198 | gpointer data) |
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| 199 | { |
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| 200 | Accessibility_Event e; |
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| 201 | AtkObject *aobject; |
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| 202 | SpiAccessible *source; |
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| 203 | GSignalQuery signal_query; |
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| 204 | char *event_name; |
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| 205 | |
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| 206 | g_return_val_if_fail (the_app != NULL, FALSE); |
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| 207 | |
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| 208 | g_signal_query (signal_hint->signal_id, &signal_query); |
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| 209 | |
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| 210 | /* TODO: move GTK reference out of app.c into bridge */ |
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| 211 | event_name = g_strdup_printf ("Gtk:%s:%s", |
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| 212 | g_type_name (signal_query.itype), |
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| 213 | signal_query.signal_name); |
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| 214 | |
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| 215 | #ifdef SPI_DEBUG |
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| 216 | fprintf (stderr, "Received signal %s\n", event_name); |
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| 217 | #endif |
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| 218 | |
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| 219 | aobject = get_atk_object_ref (g_value_get_object (param_values + 0)); |
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| 220 | |
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| 221 | source = spi_accessible_new (aobject); |
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| 222 | e.type = CORBA_string_dup (event_name); |
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| 223 | e.source = CORBA_OBJECT_NIL; |
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| 224 | e.detail1 = 0; |
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| 225 | e.detail2 = 0; |
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| 226 | notify_listeners (the_app->toolkit_listeners, source, &e); |
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| 227 | |
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| 228 | bonobo_object_unref (BONOBO_OBJECT (source)); |
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| 229 | g_object_unref (G_OBJECT (aobject)); |
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| 230 | |
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| 231 | g_free (event_name); |
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| 232 | |
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| 233 | return TRUE; |
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| 234 | } |
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| 235 | |
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| 236 | static void |
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| 237 | impl_accessibility_application_register_toolkit_event_listener (PortableServer_Servant servant, |
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| 238 | Accessibility_EventListener listener, |
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| 239 | const CORBA_char *event_name, |
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| 240 | CORBA_Environment *ev) |
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| 241 | { |
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| 242 | guint spi_listener_id; |
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| 243 | spi_listener_id = |
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| 244 | atk_add_global_event_listener (spi_application_toolkit_event_listener, event_name); |
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| 245 | the_app->toolkit_listeners = g_list_append (the_app->toolkit_listeners, |
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| 246 | CORBA_Object_duplicate (listener, ev)); |
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| 247 | #ifdef SPI_DEBUG |
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| 248 | fprintf (stderr, "registered %d for toolkit events named: %s\n", |
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| 249 | spi_listener_id, |
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| 250 | event_name); |
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| 251 | #endif |
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| 252 | } |
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| 253 | |
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| 254 | static void |
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| 255 | impl_accessibility_application_register_object_event_listener (PortableServer_Servant servant, |
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| 256 | Accessibility_EventListener listener, |
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| 257 | const CORBA_char *event_name, |
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| 258 | CORBA_Environment *ev) |
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| 259 | { |
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| 260 | guint spi_listener_id = 0; |
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| 261 | const char *toolkit_specific_event_name = |
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| 262 | lookup_toolkit_event_for_name (event_name); |
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| 263 | if (toolkit_specific_event_name) |
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| 264 | { |
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| 265 | spi_listener_id = |
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| 266 | atk_add_global_event_listener (spi_application_object_event_listener, |
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| 267 | toolkit_specific_event_name); |
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| 268 | the_app->toolkit_listeners = g_list_append (the_app->toolkit_listeners, |
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| 269 | CORBA_Object_duplicate (listener, ev)); |
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| 270 | } |
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| 271 | #ifdef SPI_DEBUG |
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| 272 | fprintf (stderr, "registered %d for object events named: %s\n", |
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| 273 | spi_listener_id, |
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| 274 | event_name); |
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| 275 | #endif |
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| 276 | } |
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| 277 | |
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| 278 | static void |
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| 279 | notify_listeners (GList *listeners, SpiAccessible *source, Accessibility_Event *e) |
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| 280 | { |
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| 281 | GList *l; |
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| 282 | CORBA_Environment ev; |
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| 283 | |
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| 284 | CORBA_exception_init (&ev); |
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| 285 | |
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| 286 | for (l = listeners; l; l = l->next) |
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| 287 | { |
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| 288 | Accessibility_EventListener listener = l->data; |
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| 289 | |
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| 290 | e->source = bonobo_object_dup_ref (BONOBO_OBJREF (source), &ev); |
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| 291 | |
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| 292 | Accessibility_EventListener_notifyEvent (listener, e, &ev); |
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| 293 | /* |
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| 294 | * when this (oneway) call completes, the CORBA refcount and |
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| 295 | * Bonobo_Unknown refcount will be decremented by the recipient |
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| 296 | */ |
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| 297 | CORBA_exception_free (&ev); |
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| 298 | } |
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| 299 | } |
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| 300 | |
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| 301 | static const char * |
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| 302 | reverse_lookup_name_for_toolkit_event (char *toolkit_specific_name) |
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| 303 | { |
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| 304 | const char *generic_name; |
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| 305 | SpiApplicationClass *klass = g_type_class_peek (SPI_APPLICATION_TYPE); |
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| 306 | #ifdef SPI_DEBUG |
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| 307 | fprintf (stderr, "(reverse lookup) looking for %s in hash table.\n", toolkit_specific_name); |
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| 308 | #endif |
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| 309 | generic_name = |
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| 310 | (const char *) g_hash_table_lookup (klass->generic_event_names, toolkit_specific_name); |
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| 311 | #ifdef SPI_DEBUG |
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| 312 | fprintf (stderr, "toolkit event %s converted to %s\n", toolkit_specific_name, generic_name); |
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| 313 | #endif |
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| 314 | return generic_name; |
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| 315 | } |
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| 316 | |
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| 317 | static void |
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| 318 | init_toolkit_names (GHashTable **generic_event_names, GHashTable **toolkit_event_names) |
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| 319 | { |
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| 320 | *toolkit_event_names = g_hash_table_new (g_str_hash, g_str_equal); |
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| 321 | *generic_event_names = g_hash_table_new (g_str_hash, g_str_equal); |
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| 322 | g_hash_table_insert (*toolkit_event_names, |
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| 323 | "object:property-change", |
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| 324 | "Gtk:AtkObject:property-change"); |
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| 325 | g_hash_table_insert (*generic_event_names, |
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| 326 | "Gtk:AtkObject:property-change", |
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| 327 | "object:property-change"); |
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| 328 | #ifdef SPI_DEBUG |
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| 329 | fprintf (stderr, "inserted spi_selection_changed hash\n"); |
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| 330 | #endif |
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| 331 | } |
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| 332 | |
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| 333 | static void |
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| 334 | spi_application_class_init (SpiApplicationClass *klass) |
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| 335 | { |
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| 336 | GObjectClass * object_class = (GObjectClass *) klass; |
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| 337 | POA_Accessibility_Application__epv *epv = &klass->epv; |
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| 338 | |
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| 339 | spi_application_parent_class = g_type_class_ref (SPI_ACCESSIBLE_TYPE); |
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| 340 | |
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| 341 | object_class->finalize = spi_accessible_application_finalize; |
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| 342 | |
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| 343 | epv->_get_toolkitName = impl_accessibility_application_get_toolkit_name; |
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| 344 | epv->_get_version = impl_accessibility_application_get_version; |
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| 345 | epv->_get_id = impl_accessibility_application_get_id; |
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| 346 | epv->_set_id = impl_accessibility_application_set_id; |
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| 347 | epv->registerToolkitEventListener = impl_accessibility_application_register_toolkit_event_listener; |
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| 348 | init_toolkit_names (&klass->generic_event_names, &klass->toolkit_event_names); |
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| 349 | } |
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| 350 | |
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| 351 | static void |
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| 352 | spi_application_init (SpiApplication *application) |
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| 353 | { |
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| 354 | application->toolkit_listeners = NULL; |
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| 355 | the_app = application; |
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| 356 | } |
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| 357 | |
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| 358 | BONOBO_TYPE_FUNC_FULL (SpiApplication, |
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| 359 | Accessibility_Application, |
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| 360 | PARENT_TYPE, spi_application); |
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| 361 | |
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| 362 | SpiApplication * |
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| 363 | spi_application_new (AtkObject *app_root) |
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| 364 | { |
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| 365 | return SPI_APPLICATION (spi_accessible_construct ( |
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| 366 | SPI_APPLICATION_TYPE, app_root)); |
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| 367 | } |
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