libmmanager/mm-manager.c

   1 /* MManager - a Desktop wide manager for multimedia applications.
   2  *
   3  * Copyright (C) 2008 Cosimo Cecchi <cosimoc@gnome.org>
   4  *
   5  * This library is free software; you can redistribute it and/or
   6  * modify it under the terms of the GNU Lesser General Public
   7  * License as published by the Free Software Foundation; either
   8  * version 2 of the License, or (at your option) any later version.
   9  *
  10  * This library is distributed in the hope that it will be useful,
  11  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  12  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  13  * Lesser General Public License for more details.
  14  *
  15  * You should have received a copy of the GNU Lesser General Public
  16  * License along with this library; if not, write to the
  17  * Free Software Foundation, Inc., 59 Temple Place - Suite 330,
  18  * Boston, MA 02111-1307, USA.
  19  */
  20
  21 #include <glib-object.h>
  22 #include <glib.h>
  23 #include <dbus/dbus-glib.h>
  24 #include "mm-application.h"
  25 #include "mm-dbus-application.h"
  26
  27 #include "mm-manager.h"
  28
  29 G_DEFINE_TYPE (MMManager, mm_manager, G_TYPE_OBJECT);
  30
  31 #define MM_MANAGER_GET_PRIVATE(o) \
  32    (G_TYPE_INSTANCE_GET_PRIVATE ((o), MM_TYPE_MANAGER, MMManagerDetails))
  33
  34 MMManager* mm_manager_singleton = NULL;
  35
  36 struct _MMManagerDetails {
  37   MMModuleManager *module_manager;
  38   GHashTable *applications;
  39 };
  40
  41 static void
  42 mm_manager_finalize (GObject *o)
  43 {
  44   MMManager *manager = MM_MANAGER (o);
  45
  46   g_hash_table_destroy (manager->details->applications);
  47
  48   G_OBJECT_CLASS (mm_manager_parent_class)->finalize (o);
  49 }
  50
  51 static void
  52 mm_manager_class_init (MMManagerClass *klass)
  53 {
  54   G_OBJECT_CLASS (klass)->finalize = mm_manager_finalize;
  55
  56   g_type_class_add_private (klass, sizeof (MMManagerDetails));
  57 }
  58
  59 static void
  60 insert_dbus_application (GHashTable *applications,
  61                          DBusGConnection *connection,
  62                          const char *name,
  63                          const char *path)
  64 {
  65   DBusGProxy *app_proxy;
  66   guint supported_type;
  67   char *desktop_id = NULL;
  68   gboolean res;
  69   MMApplication *app;
  70   GError *error = NULL;
  71
  72   /* validate our args */
  73   g_return_if_fail (name != NULL);
  74   g_return_if_fail (path != NULL);
  75
  76   app_proxy = dbus_g_proxy_new_for_name (connection,
  77                                          name, path,
  78                                          "org.gnome.MediaManager.Application");
  79   res = dbus_g_proxy_call (app_proxy,
  80                            "GetApplicationInfo",
  81                            &error,
  82                            G_TYPE_INVALID,
  83                            G_TYPE_UINT,
  84                            &supported_type,
  85                            G_TYPE_STRING,
  86                            &desktop_id,
  87                            G_TYPE_INVALID);
  88   if (!res) {
  89     g_warning ("Unable to get application info for the app at path %s: %s", path,
  90                error->message);
  91     g_object_unref (app_proxy);
  92     g_error_free (error);
  93     return;
  94   }
  95
  96   app = mm_dbus_application_new (desktop_id, supported_type,
  97                                  name, path);
  98   g_hash_table_insert (applications,
  99                        g_strdup (name), /* key   */
 100                        app);            /* value */
 101   g_free (desktop_id);
 102   g_object_unref (app_proxy);
 103 }
 104
 105 static void
 106 insert_dbus_applications (GHashTable *applications)
 107 {
 108   DBusGConnection *connection;
 109   DBusGProxy *dbus_manager_proxy;
 110   GError *error = NULL;
 111   gboolean res;
 112   char **registered_names = NULL;
 113   char **registered_paths = NULL;
 114   int idx, total_apps;
 115
 116   connection = dbus_g_bus_get (DBUS_BUS_SESSION, &error);
 117   if (error) {
 118     g_warning ("Error while connecting to the session bus: %s", error->message);
 119     g_error_free (error);
 120     return;
 121   }
 122
 123   dbus_manager_proxy = dbus_g_proxy_new_for_name (connection,
 124                                                   "org.gnome.MediaManager",
 125                                                   "/org/gnome/MediaManager/Manager",
 126                                                   "org.gnome.MediaManager.Manager");
 127   res = dbus_g_proxy_call (dbus_manager_proxy,
 128                            "GetRegisteredApps",
 129                            &error,
 130                            G_TYPE_INVALID,
 131                            G_TYPE_STRV,
 132                            &registered_names,
 133                            G_TYPE_STRV,
 134                            &registered_paths,
 135                            G_TYPE_INVALID);
 136   if (!res) {
 137     g_warning ("Error while calling GetRegisteredApps on the dbus manager: %s",
 138                error->message);
 139     g_object_unref (dbus_manager_proxy);
 140     g_error_free (error);
 141     return;
 142   }
 143
 144   if ((total_apps = G_N_ELEMENTS (registered_names)) != G_N_ELEMENTS (registered_paths)) {
 145     /* wtf, something is broken here, we'd better return */
 146     goto out;
 147   }
 148
 149   if (total_apps == 1) {
 150     /* array is NULL-terminated, so in this case there are no
 151      * applications.
 152      */
 153     goto out;
 154   }
 155
 156   for (idx = 0; idx < total_apps - 1; idx++) {
 157     insert_dbus_application (applications, connection,
 158                              registered_names[idx], registered_paths[idx]);
 159   }
 160
 161 out:
 162   g_strfreev (registered_names);
 163   g_strfreev (registered_paths);
 164   g_object_unref (dbus_manager_proxy);
 165 }
 166
 167 static void
 168 populate_applications_table (MMManager *manager)
 169 {
 170   GHashTable *applications = manager->details->applications;
 171   GList *app_providers, *l;
 172   MMApplication *application;
 173   MMApplicationProvider *provider;
 174   const char *id;
 175
 176   app_providers = mm_module_manager_get_all_application_providers (manager->details->module_manager);
 177   for (l = app_providers; l; l = l->next) {
 178     provider = MM_APPLICATION_PROVIDER (l->data);
 179     application = mm_application_provider_get_application (provider);
 180     id = mm_application_get_id (application);
 181     g_hash_table_insert (applications,
 182                          g_strdup (id), /* key   */
 183                          application);  /* value */
 184   }
 185
 186   g_list_free (app_providers);
 187
 188   /* now insert all the application registered on the DBus manager */
 189   insert_dbus_applications (applications);
 190 }
 191
 192 static void
 193 mm_manager_init (MMManager *manager)
 194 {
 195   MMManagerDetails *details = manager->details = MM_MANAGER_GET_PRIVATE (manager);
 196
 197   details->module_manager = MM_MODULE_MANAGER (g_object_new (MM_TYPE_MODULE_MANAGER, NULL));
 198   details->applications = g_hash_table_new_full (g_str_hash, g_str_equal,
 199                                                  (GDestroyNotify) g_free,
 200                                                  NULL);
 201
 202   populate_applications_table (manager);
 203 }
 204
 205 /* public methods */
 206
 207 /**
 208  * mm_manager_get:
 209  *
 210  * Gets the #MMManager singleton instance.
 211  *
 212  * Return value: a #MMManager object. The object is owned by the library and
 213  * you should not modify or unref it.
 214  */
 215
 216 MMManager *
 217 mm_manager_get (void)
 218 {
 219   if (!mm_manager_singleton) {
 220     mm_manager_singleton = MM_MANAGER (g_object_new (MM_TYPE_MANAGER, NULL));
 221   }
 222
 223   return mm_manager_singleton;
 224 }
 225
 226 /**
 227  * mm_manager_get_application_list_for_type:
 228  * @manager: a #MMManager.
 229  * @type: the media type you're interested in.
 230  *
 231  * Gets a #GList of #MMApplication objects supporting the specified type.
 232  *
 233  * Return value: a #GList of #MMApplication objects. Use #g_list_free when
 234  * done with it.
 235  */
 236
 237 GList *
 238 mm_manager_get_application_list_for_type (MMManager *manager,
 239                                           MMApplicationType type)
 240 {
 241   GList *all_apps, *l;
 242   GList *app_list = NULL;
 243   MMApplicationType supported_type;
 244   MMApplication *app;
 245
 246   g_return_val_if_fail (manager != NULL, NULL);
 247   g_return_val_if_fail (MM_IS_MANAGER (manager), NULL);
 248
 249   /* this should be fine anyway, as the hash table is created only when
 250    * initializing the manager.
 251    */
 252   all_apps = g_hash_table_get_values (manager->details->applications);
 253   for (l = all_apps; l; l = l->next) {
 254     app = l->data;
 255     g_object_get (app,
 256                   "supported-type", &supported_type,
 257                   NULL);
 258     if (supported_type == type) {
 259       app_list = g_list_prepend (app_list, app);
 260     }
 261   }
 262
 263   g_list_free (all_apps);
 264
 265   return app_list;
 266 }
 267
 268 /**
 269  * mm_manager_get_application_list:
 270  * @manager: a #MMManager.
 271  *
 272  * Gets a list of all the #MMApplication objects known to the manager.
 273  *
 274  * Return value: a #GList of #MMApplication objects. Use #g_list_free when done
 275  * with it.
 276  */
 277
 278 GList *
 279 mm_manager_get_application_list (MMManager *manager)
 280 {
 281   g_return_val_if_fail (manager != NULL, NULL);
 282   g_return_val_if_fail (MM_IS_MANAGER (manager), NULL);
 283
 284   /* see the comment in _get_application_list_for_type () */
 285   return g_hash_table_get_values (manager->details->applications);
 286 }
 287
 288 /**
 289  * mm_manager_get_module_manager:
 290  * @manager: a #MMManager.
 291  *
 292  * Gets the #MMModuleManager singleton instance.
 293  *
 294  * Return value: a #MMModuleManager. The object is owned by the library and
 295  * you should not unref or modify it.
 296  */
 297
 298 MMModuleManager *
 299 mm_manager_get_module_manager (MMManager *manager)
 300 {
 301   g_return_val_if_fail (manager != NULL, NULL);
 302   g_return_val_if_fail (MM_IS_MANAGER (manager), NULL);
 303
 304   return manager->details->module_manager;
 305 }