gio/gapplication.c

   1 /*
   2  * Copyright © 2010 Codethink Limited
   3  *
   4  * This program is free software: you can redistribute it and/or modify
   5  * it under the terms of the GNU Lesser General Public License as published
   6  * by the Free Software Foundation; either version 2 of the licence or (at
   7  * your option) any later version.
   8  *
   9  * This library is distributed in the hope that it will be useful,
  10  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  11  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  12  * Lesser General Public License for more details.
  13  *
  14  * You should have received a copy of the GNU Lesser General
  15  * Public License along with this library; if not, write to the
  16  * Free Software Foundation, Inc., 59 Temple Place, Suite 330,
  17  * Boston, MA 02111-1307, USA.
  18  *
  19  * Authors: Ryan Lortie <desrt@desrt.ca>
  20  */
  21
  22 /* Prologue {{{1 */
  23 #include "config.h"
  24
  25 #include "gapplication.h"
  26
  27 #include "gapplicationcommandline.h"
  28 #include "gapplicationimpl.h"
  29 #include "gactiongroup.h"
  30 #include "gsettings.h"
  31
  32 #include "gioenumtypes.h"
  33 #include "gioenums.h"
  34 #include "gfile.h"
  35
  36 #include "glibintl.h"
  37
  38 #include <string.h>
  39
  40 /**
  41  * SECTION:gapplication
  42  * @title: GApplication
  43  * @short_description: Core application class
  44  *
  45  * A #GApplication is the foundation of an application, unique for a
  46  * given application identifier.  The GApplication class wraps some
  47  * low-level platform-specific services and is intended to act as the
  48  * foundation for higher-level application classes such as
  49  * #GtkApplication or #MxApplication.  In general, you should not use
  50  * this class outside of a higher level framework.
  51  *
  52  * One of the core features that GApplication provides is process
  53  * uniqueness, in the context of a "session".  The session concept is
  54  * platform-dependent, but corresponds roughly to a graphical desktop
  55  * login.  When your application is launched again, its arguments
  56  * are passed through platform communication to the already running
  57  * program. The already running instance of the program is called the
  58  * <firstterm>primary instance</firstterm>.
  59  *
  60  * Before using GApplication, you must choose an "application identifier".
  61  * The expected form of an application identifier is very close to that of
  62  * of a <ulink url="http://dbus.freedesktop.org/doc/dbus-specification.html#message-protocol-names-interface">DBus bus name</ulink>.
  63  * Examples include: "com.example.MyApp", "org.example.internal-apps.Calculator".
  64  * For details on valid application identifiers, see
  65  * g_application_id_is_valid().
  66  *
  67  * The application identifier is claimed by the application as a
  68  * well-known bus name on the user's session bus.  This means that the
  69  * uniqueness of your application is scoped to the current session.  It
  70  * also means that your application may provide additional services
  71  * (through registration of other object paths) at that bus name.
  72  *
  73  * The registration of these object paths should be done with the shared
  74  * GDBus session bus.  Note that due to the internal architecture of
  75  * GDBus, method calls can be dispatched at any time (even if a main
  76  * loop is not running).  For this reason, you must ensure that any
  77  * object paths that you wish to register are registered before
  78  * #GApplication attempts to acquire the bus name of your application
  79  * (which happens in g_application_register()).  Unfortunately, this
  80  * means that you cannot use g_application_get_is_remote() to decide if
  81  * you want to register object paths.
  82  *
  83  * GApplication provides convenient life cycle management by maintaining
  84  * a <firstterm>use count</firstterm> for the primary application instance.
  85  * The use count can be changed using g_application_hold() and
  86  * g_application_release(). If it drops to zero, the application exits.
  87  *
  88  * GApplication also implements the #GActionGroup interface and lets you
  89  * easily export actions by adding them with g_application_set_action_group().
  90  * When invoking an action by calling g_action_group_activate_action() on
  91  * the application, it is always invoked in the primary instance.
  92  *
  93  * There is a number of different entry points into a #GApplication:
  94  * <itemizedlist>
  95  * <listitem>via 'Activate' (i.e. just starting the application)</listitem>
  96  * <listitem>via 'Open' (i.e. opening some files)</listitem>
  97  * <listitem>by handling a command-line</listitem>
  98  * <listitem>via activating an action</listitem>
  99  * </itemizedlist>
 100  * The #GApplication::startup signal lets you handle the application
 101  * initialization for all of these in a single place.
 102  *
 103  * Regardless of which of these entry points is used to start the application,
 104  * GApplication passes some <firstterm id="platform-data">platform
 105  * data</firstterm> from the launching instance to the primary instance,
 106  * in the form of a #GVariant dictionary mapping strings to variants.
 107  * To use platform data, override the @before_emit or @after_emit virtual
 108  * functions in your #GApplication subclass. When dealing with
 109  * #GApplicationCommandline objects, the platform data is directly
 110  * available via g_application_command_line_get_cwd(),
 111  * g_application_command_line_get_environ() and
 112  * g_application_command_line_get_platform_data().
 113  *
 114  * As the name indicates, the platform data may vary depending on the
 115  * operating system, but it always includes the current directory (key
 116  * "cwd"), and optionally the environment (ie the set of environment
 117  * variables and their values) of the calling process (key "environ").
 118  * The environment is only added to the platform data if the
 119  * #G_APPLICATION_SEND_ENVIONMENT flag is set. GApplication subclasses
 120  * can add their own platform data by overriding the @add_platform_data
 121  * virtual function. For instance, #GtkApplication adds startup notification
 122  * data in this way.
 123  *
 124  * To parse commandline arguments you may handle the
 125  * #GApplication::command-line signal or override the local_command_line()
 126  * vfunc, to parse them in either the primary instance or the local instance,
 127  * respectively.
 128  *
 129  * <example id="gapplication-example-open"><title>Opening files with a GApplication</title>
 130  * <programlisting>
 131  * <xi:include xmlns:xi="http://www.w3.org/2001/XInclude" parse="text" href="../../../../gio/tests/gapplication-example-open.c">
 132  *   <xi:fallback>FIXME: MISSING XINCLUDE CONTENT</xi:fallback>
 133  * </xi:include>
 134  * </programlisting>
 135  * </example>
 136  *
 137  * <example id="gapplication-example-actions"><title>A GApplication with actions</title>
 138  * <programlisting>
 139  * <xi:include xmlns:xi="http://www.w3.org/2001/XInclude" parse="text" href="../../../../gio/tests/gapplication-example-actions.c">
 140  *   <xi:fallback>FIXME: MISSING XINCLUDE CONTENT</xi:fallback>
 141  * </xi:include>
 142  * </programlisting>
 143  * </example>
 144  */
 145
 146 struct _GApplicationPrivate
 147 {
 148   GApplicationFlags  flags;
 149   gchar             *id;
 150
 151   GActionGroup      *actions;
 152   GMainLoop         *mainloop;
 153
 154   guint              inactivity_timeout_id;
 155   guint              inactivity_timeout;
 156   guint              use_count;
 157
 158   guint              is_registered : 1;
 159   guint              is_remote : 1;
 160
 161   GHashTable        *remote_actions;  /* string -> RemoteActionInfo */
 162   GApplicationImpl  *impl;
 163 };
 164
 165 enum
 166 {
 167   PROP_NONE,
 168   PROP_APPLICATION_ID,
 169   PROP_FLAGS,
 170   PROP_IS_REGISTERED,
 171   PROP_IS_REMOTE,
 172   PROP_INACTIVITY_TIMEOUT,
 173   PROP_ACTION_GROUP
 174 };
 175
 176 enum
 177 {
 178   SIGNAL_STARTUP,
 179   SIGNAL_SHUTDOWN,
 180   SIGNAL_ACTIVATE,
 181   SIGNAL_OPEN,
 182   SIGNAL_ACTION,
 183   SIGNAL_COMMAND_LINE,
 184   NR_SIGNALS
 185 };
 186
 187 static guint g_application_signals[NR_SIGNALS];
 188
 189 static void g_application_action_group_iface_init (GActionGroupInterface *);
 190 G_DEFINE_TYPE_WITH_CODE (GApplication, g_application, G_TYPE_OBJECT,
 191  G_IMPLEMENT_INTERFACE (G_TYPE_ACTION_GROUP,
 192    g_application_action_group_iface_init))
 193
 194 /* vfunc defaults {{{1 */
 195 static void
 196 g_application_real_before_emit (GApplication *application,
 197                                 GVariant     *platform_data)
 198 {
 199 }
 200
 201 static void
 202 g_application_real_after_emit (GApplication *application,
 203                                GVariant     *platform_data)
 204 {
 205 }
 206
 207 static void
 208 g_application_real_startup (GApplication *application)
 209 {
 210 }
 211
 212 static void
 213 g_application_real_shutdown (GApplication *application)
 214 {
 215 }
 216
 217 static void
 218 g_application_real_activate (GApplication *application)
 219 {
 220   if (!g_signal_has_handler_pending (application,
 221                                      g_application_signals[SIGNAL_ACTIVATE],
 222                                      0, TRUE) &&
 223       G_APPLICATION_GET_CLASS (application)->activate == g_application_real_activate)
 224     {
 225       static gboolean warned;
 226
 227       if (warned)
 228         return;
 229
 230       g_warning ("Your application does not implement "
 231                  "g_application_activate() and has no handlers connected "
 232                  "to the 'activate' signal.  It should do one of these.");
 233       warned = TRUE;
 234     }
 235 }
 236
 237 static void
 238 g_application_real_open (GApplication  *application,
 239                          GFile        **files,
 240                          gint           n_files,
 241                          const gchar   *hint)
 242 {
 243   if (!g_signal_has_handler_pending (application,
 244                                      g_application_signals[SIGNAL_OPEN],
 245                                      0, TRUE) &&
 246       G_APPLICATION_GET_CLASS (application)->open == g_application_real_open)
 247     {
 248       static gboolean warned;
 249
 250       if (warned)
 251         return;
 252
 253       g_warning ("Your application claims to support opening files "
 254                  "but does not implement g_application_open() and has no "
 255                  "handlers connected to the 'open' signal.");
 256       warned = TRUE;
 257     }
 258 }
 259
 260 static int
 261 g_application_real_command_line (GApplication            *application,
 262                                  GApplicationCommandLine *cmdline)
 263 {
 264   if (!g_signal_has_handler_pending (application,
 265                                      g_application_signals[SIGNAL_COMMAND_LINE],
 266                                      0, TRUE) &&
 267       G_APPLICATION_GET_CLASS (application)->command_line == g_application_real_command_line)
 268     {
 269       static gboolean warned;
 270
 271       if (warned)
 272         return 1;
 273
 274       g_warning ("Your application claims to support custom command line "
 275                  "handling but does not implement g_application_command_line() "
 276                  "and has no handlers connected to the 'command-line' signal.");
 277
 278       warned = TRUE;
 279     }
 280
 281     return 1;
 282 }
 283
 284 static gboolean
 285 g_application_real_local_command_line (GApplication   *application,
 286                                        gchar        ***arguments,
 287                                        int            *exit_status)
 288 {
 289   if (application->priv->flags & G_APPLICATION_HANDLES_COMMAND_LINE)
 290     return FALSE;
 291
 292   else
 293     {
 294       GError *error = NULL;
 295       gint n_args;
 296
 297       if (!g_application_register (application, NULL, &error))
 298         {
 299           g_critical ("%s", error->message);
 300           g_error_free (error);
 301           *exit_status = 1;
 302           return TRUE;
 303         }
 304
 305       n_args = g_strv_length (*arguments);
 306
 307       if (application->priv->flags & G_APPLICATION_IS_SERVICE)
 308         {
 309           if ((*exit_status = n_args > 1))
 310             {
 311               g_printerr ("GApplication service mode takes no arguments.\n");
 312               application->priv->flags &= ~G_APPLICATION_IS_SERVICE;
 313             }
 314
 315           return TRUE;
 316         }
 317
 318       if (n_args <= 1)
 319         {
 320           g_application_activate (application);
 321           *exit_status = 0;
 322         }
 323
 324       else
 325         {
 326           if (~application->priv->flags & G_APPLICATION_HANDLES_OPEN)
 327             {
 328               g_critical ("This application can not open files.");
 329               *exit_status = 1;
 330             }
 331           else
 332             {
 333               GFile **files;
 334               gint n_files;
 335               gint i;
 336
 337               n_files = n_args - 1;
 338               files = g_new (GFile *, n_files);
 339
 340               for (i = 0; i < n_files; i++)
 341                 files[i] = g_file_new_for_commandline_arg ((*arguments)[i + 1]);
 342
 343               g_application_open (application, files, n_files, "");
 344
 345               for (i = 0; i < n_files; i++)
 346                 g_object_unref (files[i]);
 347               g_free (files);
 348
 349               *exit_status = 0;
 350             }
 351         }
 352
 353       return TRUE;
 354     }
 355 }
 356
 357 static void
 358 g_application_real_add_platform_data (GApplication    *application,
 359                                       GVariantBuilder *builder)
 360 {
 361 }
 362
 363 static void
 364 g_application_real_quit_mainloop (GApplication *application)
 365 {
 366   if (application->priv->mainloop != NULL)
 367     g_main_loop_quit (application->priv->mainloop);
 368 }
 369
 370 static void
 371 g_application_real_run_mainloop (GApplication *application)
 372 {
 373   if (application->priv->mainloop == NULL)
 374     application->priv->mainloop = g_main_loop_new (NULL, FALSE);
 375
 376   g_main_loop_run (application->priv->mainloop);
 377 }
 378
 379 /* GObject implementation stuff {{{1 */
 380 static void
 381 g_application_set_property (GObject      *object,
 382                             guint         prop_id,
 383                             const GValue *value,
 384                             GParamSpec   *pspec)
 385 {
 386   GApplication *application = G_APPLICATION (object);
 387
 388   switch (prop_id)
 389     {
 390     case PROP_APPLICATION_ID:
 391       g_application_set_application_id (application,
 392                                         g_value_get_string (value));
 393       break;
 394
 395     case PROP_FLAGS:
 396       g_application_set_flags (application, g_value_get_flags (value));
 397       break;
 398
 399     case PROP_INACTIVITY_TIMEOUT:
 400       g_application_set_inactivity_timeout (application,
 401                                             g_value_get_uint (value));
 402       break;
 403
 404     case PROP_ACTION_GROUP:
 405       g_application_set_action_group (application,
 406                                       g_value_get_object (value));
 407       break;
 408
 409     default:
 410       g_assert_not_reached ();
 411     }
 412 }
 413
 414 /**
 415  * g_application_set_action_group:
 416  * @application: a #GApplication
 417  * @action_group: (allow-none): a #GActionGroup, or %NULL
 418  *
 419  * Sets or unsets the group of actions associated with the application.
 420  *
 421  * These actions are the actions that can be remotely invoked.
 422  *
 423  * It is an error to call this function after the application has been
 424  * registered.
 425  *
 426  * Since: 2.28
 427  **/
 428 void
 429 g_application_set_action_group (GApplication *application,
 430                                 GActionGroup *action_group)
 431 {
 432   g_return_if_fail (G_IS_APPLICATION (application));
 433   g_return_if_fail (!application->priv->is_registered);
 434
 435   if (application->priv->actions != NULL)
 436     g_object_unref (application->priv->actions);
 437
 438   application->priv->actions = action_group;
 439
 440   if (application->priv->actions != NULL)
 441     g_object_ref (application->priv->actions);
 442 }
 443
 444 static void
 445 g_application_get_property (GObject    *object,
 446                             guint       prop_id,
 447                             GValue     *value,
 448                             GParamSpec *pspec)
 449 {
 450   GApplication *application = G_APPLICATION (object);
 451
 452   switch (prop_id)
 453     {
 454     case PROP_APPLICATION_ID:
 455       g_value_set_string (value,
 456                           g_application_get_application_id (application));
 457       break;
 458
 459     case PROP_FLAGS:
 460       g_value_set_flags (value,
 461                          g_application_get_flags (application));
 462       break;
 463
 464     case PROP_IS_REGISTERED:
 465       g_value_set_boolean (value,
 466                            g_application_get_is_registered (application));
 467       break;
 468
 469     case PROP_IS_REMOTE:
 470       g_value_set_boolean (value,
 471                            g_application_get_is_remote (application));
 472       break;
 473
 474     case PROP_INACTIVITY_TIMEOUT:
 475       g_value_set_uint (value,
 476                         g_application_get_inactivity_timeout (application));
 477       break;
 478
 479     default:
 480       g_assert_not_reached ();
 481     }
 482 }
 483
 484 static void
 485 g_application_constructed (GObject *object)
 486 {
 487   GApplication *application = G_APPLICATION (object);
 488
 489   g_assert (application->priv->id != NULL);
 490 }
 491
 492 static void
 493 g_application_finalize (GObject *object)
 494 {
 495   GApplication *application = G_APPLICATION (object);
 496
 497   if (application->priv->impl)
 498     g_application_impl_destroy (application->priv->impl);
 499   g_free (application->priv->id);
 500
 501   if (application->priv->mainloop)
 502     g_main_loop_unref (application->priv->mainloop);
 503
 504   G_OBJECT_CLASS (g_application_parent_class)
 505     ->finalize (object);
 506 }
 507
 508 static void
 509 g_application_init (GApplication *application)
 510 {
 511   application->priv = G_TYPE_INSTANCE_GET_PRIVATE (application,
 512                                                    G_TYPE_APPLICATION,
 513                                                    GApplicationPrivate);
 514 }
 515
 516 static void
 517 g_application_class_init (GApplicationClass *class)
 518 {
 519   GObjectClass *object_class = G_OBJECT_CLASS (class);
 520
 521   object_class->constructed = g_application_constructed;
 522   object_class->finalize = g_application_finalize;
 523   object_class->get_property = g_application_get_property;
 524   object_class->set_property = g_application_set_property;
 525
 526   class->before_emit = g_application_real_before_emit;
 527   class->after_emit = g_application_real_after_emit;
 528   class->startup = g_application_real_startup;
 529   class->shutdown = g_application_real_shutdown;
 530   class->activate = g_application_real_activate;
 531   class->open = g_application_real_open;
 532   class->command_line = g_application_real_command_line;
 533   class->local_command_line = g_application_real_local_command_line;
 534   class->add_platform_data = g_application_real_add_platform_data;
 535   class->quit_mainloop = g_application_real_quit_mainloop;
 536   class->run_mainloop = g_application_real_run_mainloop;
 537
 538   g_object_class_install_property (object_class, PROP_APPLICATION_ID,
 539     g_param_spec_string ("application-id",
 540                          P_("Application identifier"),
 541                          P_("The unique identifier for the application"),
 542                          NULL, G_PARAM_READWRITE | G_PARAM_CONSTRUCT |
 543                          G_PARAM_STATIC_STRINGS));
 544
 545   g_object_class_install_property (object_class, PROP_FLAGS,
 546     g_param_spec_flags ("flags",
 547                         P_("Application flags"),
 548                         P_("Flags specifying the behaviour of the application"),
 549                         G_TYPE_APPLICATION_FLAGS, G_APPLICATION_FLAGS_NONE,
 550                         G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS));
 551
 552   g_object_class_install_property (object_class, PROP_IS_REGISTERED,
 553     g_param_spec_boolean ("is-registered",
 554                           P_("Is registered"),
 555                           P_("If g_application_register() has been called"),
 556                           FALSE, G_PARAM_READABLE | G_PARAM_STATIC_STRINGS));
 557
 558   g_object_class_install_property (object_class, PROP_IS_REMOTE,
 559     g_param_spec_boolean ("is-remote",
 560                           P_("Is remote"),
 561                           P_("If this application instance is remote"),
 562                           FALSE, G_PARAM_READABLE | G_PARAM_STATIC_STRINGS));
 563
 564   g_object_class_install_property (object_class, PROP_INACTIVITY_TIMEOUT,
 565     g_param_spec_uint ("inactivity-timeout",
 566                        P_("Inactivity timeout"),
 567                        P_("Time (ms) to stay alive after becoming idle"),
 568                        0, G_MAXUINT, 0,
 569                        G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS));
 570
 571   g_object_class_install_property (object_class, PROP_ACTION_GROUP,
 572     g_param_spec_object ("action-group",
 573                          P_("Action group"),
 574                          P_("The group of actions that the application exports"),
 575                          G_TYPE_ACTION_GROUP,
 576                          G_PARAM_WRITABLE | G_PARAM_STATIC_STRINGS));
 577
 578   /**
 579    * GApplication::startup:
 580    * @application: the application
 581    *
 582    * The ::startup signal is emitted on the primary instance immediately
 583    * after registration. See g_application_register().
 584    */
 585   g_application_signals[SIGNAL_STARTUP] =
 586     g_signal_new ("startup", G_TYPE_APPLICATION, G_SIGNAL_RUN_LAST,
 587                   G_STRUCT_OFFSET (GApplicationClass, startup),
 588                   NULL, NULL, g_cclosure_marshal_VOID__VOID, G_TYPE_NONE, 0);
 589
 590   /**
 591    * GApplication::shutdown:
 592    * @application: the application
 593    *
 594    * The ::shutdown signal is emitted only on the registered primary instance
 595    * immediately after the main loop terminates.
 596    */
 597   g_application_signals[SIGNAL_SHUTDOWN] =
 598     g_signal_new ("shutdown", G_TYPE_APPLICATION, G_SIGNAL_RUN_LAST,
 599                   G_STRUCT_OFFSET (GApplicationClass, shutdown),
 600                   NULL, NULL, g_cclosure_marshal_VOID__VOID, G_TYPE_NONE, 0);
 601
 602   /**
 603    * GApplication::activate:
 604    * @application: the application
 605    *
 606    * The ::activate signal is emitted on the primary instance when an
 607    * activation occurs. See g_application_activate().
 608    */
 609   g_application_signals[SIGNAL_ACTIVATE] =
 610     g_signal_new ("activate", G_TYPE_APPLICATION, G_SIGNAL_RUN_LAST,
 611                   G_STRUCT_OFFSET (GApplicationClass, activate),
 612                   NULL, NULL, g_cclosure_marshal_VOID__VOID, G_TYPE_NONE, 0);
 613
 614
 615   /**
 616    * GApplication::open:
 617    * @application: the application
 618    * @files: (array length=n_files) (element-type GFile): an array of #GFiles
 619    * @n_files: the length of @files
 620    * @hint: a hint provided by the calling instance
 621    *
 622    * The ::open signal is emitted on the primary instance when there are
 623    * files to open. See g_application_open() for more information.
 624    */
 625   g_application_signals[SIGNAL_OPEN] =
 626     g_signal_new ("open", G_TYPE_APPLICATION, G_SIGNAL_RUN_LAST,
 627                   G_STRUCT_OFFSET (GApplicationClass, open),
 628                   NULL, NULL, NULL,
 629                   G_TYPE_NONE, 3, G_TYPE_POINTER, G_TYPE_INT, G_TYPE_STRING);
 630
 631   /**
 632    * GApplication::command-line:
 633    * @application: the application
 634    * @command_line: a #GApplicationCommandLine representing the
 635    *     passed commandline
 636    *
 637    * The ::command-line signal is emitted on the primary instance when
 638    * a commandline is not handled locally. See g_application_run() and
 639    * the #GApplicationCommandline documentation for more information.
 640    *
 641    * Returns: An integer that is set as the exit status for the calling
 642    *   process. See g_application_command_line_set_exit_status().
 643    */
 644   g_application_signals[SIGNAL_COMMAND_LINE] =
 645     g_signal_new ("command-line", G_TYPE_APPLICATION, G_SIGNAL_RUN_LAST,
 646                   G_STRUCT_OFFSET (GApplicationClass, command_line),
 647                   g_signal_accumulator_first_wins, NULL,
 648                   NULL,
 649                   G_TYPE_INT, 1, G_TYPE_APPLICATION_COMMAND_LINE);
 650
 651   g_type_class_add_private (class, sizeof (GApplicationPrivate));
 652 }
 653
 654 static GVariant *
 655 get_platform_data (GApplication *application)
 656 {
 657   GVariantBuilder *builder;
 658   GVariant *result;
 659
 660   builder = g_variant_builder_new (G_VARIANT_TYPE ("a{sv}"));
 661
 662   {
 663     gchar *cwd = g_get_current_dir ();
 664     g_variant_builder_add (builder, "{sv}", "cwd",
 665                            g_variant_new_bytestring (cwd));
 666     g_free (cwd);
 667   }
 668
 669   if (application->priv->flags & G_APPLICATION_SEND_ENVIRONMENT)
 670     {
 671       GVariant *array;
 672       gchar **envp;
 673
 674       envp = g_get_environ ();
 675       array = g_variant_new_bytestring_array ((const gchar **) envp, -1);
 676       g_strfreev (envp);
 677
 678       g_variant_builder_add (builder, "{sv}", "environ", array);
 679     }
 680
 681   G_APPLICATION_GET_CLASS (application)->
 682     add_platform_data (application, builder);
 683
 684   result = g_variant_builder_end (builder);
 685   g_variant_builder_unref (builder);
 686
 687   return result;
 688 }
 689
 690 /* Application ID validity {{{1 */
 691
 692 /**
 693  * g_application_id_is_valid:
 694  * @application_id: a potential application identifier
 695  * @returns: %TRUE if @application_id is valid
 696  *
 697  * Checks if @application_id is a valid application identifier.
 698  *
 699  * A valid ID is required for calls to g_application_new() and
 700  * g_application_set_application_id().
 701  *
 702  * For convenience, the restrictions on application identifiers are
 703  * reproduced here:
 704  * <itemizedlist>
 705  *   <listitem>Application identifiers must contain only the ASCII characters "[A-Z][a-z][0-9]_-." and must not begin with a digit.</listitem>
 706  *   <listitem>Application identifiers must contain at least one '.' (period) character (and thus at least three elements).</listitem>
 707  *   <listitem>Application identifiers must not begin or end with a '.' (period) character.</listitem>
 708  *   <listitem>Application identifiers must not contain consecutive '.' (period) characters.</listitem>
 709  *   <listitem>Application identifiers must not exceed 255 characters.</listitem>
 710  * </itemizedlist>
 711  **/
 712 gboolean
 713 g_application_id_is_valid (const gchar *application_id)
 714 {
 715   gsize len;
 716   gboolean allow_dot;
 717   gboolean has_dot;
 718
 719   len = strlen (application_id);
 720
 721   if (len > 255)
 722     return FALSE;
 723
 724   if (!g_ascii_isalpha (application_id[0]))
 725     return FALSE;
 726
 727   if (application_id[len-1] == '.')
 728     return FALSE;
 729
 730   application_id++;
 731   allow_dot = TRUE;
 732   has_dot = FALSE;
 733   for (; *application_id; application_id++)
 734     {
 735       if (g_ascii_isalnum (*application_id) ||
 736           (*application_id == '-') ||
 737           (*application_id == '_'))
 738         {
 739           allow_dot = TRUE;
 740         }
 741       else if (allow_dot && *application_id == '.')
 742         {
 743           has_dot = TRUE;
 744           allow_dot = FALSE;
 745         }
 746       else
 747         return FALSE;
 748     }
 749
 750   if (!has_dot)
 751     return FALSE;
 752
 753   return TRUE;
 754 }
 755
 756 /* Public Constructor {{{1 */
 757 /**
 758  * g_application_new:
 759  * @application_id: the application id
 760  * @flags: the application flags
 761  * @returns: a new #GApplication instance
 762  *
 763  * Creates a new #GApplication instance.
 764  *
 765  * This function calls g_type_init() for you.
 766  *
 767  * The application id must be valid.  See g_application_id_is_valid().
 768  **/
 769 GApplication *
 770 g_application_new (const gchar       *application_id,
 771                    GApplicationFlags  flags)
 772 {
 773   g_return_val_if_fail (g_application_id_is_valid (application_id), NULL);
 774
 775   g_type_init ();
 776
 777   return g_object_new (G_TYPE_APPLICATION,
 778                        "application-id", application_id,
 779                        "flags", flags,
 780                        NULL);
 781 }
 782
 783 /* Simple get/set: application id, flags, inactivity timeout {{{1 */
 784 /**
 785  * g_application_get_application_id:
 786  * @application: a #GApplication
 787  * @returns: the identifier for @application, owned by @application
 788  *
 789  * Gets the unique identifier for @application.
 790  *
 791  * Since: 2.28
 792  **/
 793 const gchar *
 794 g_application_get_application_id (GApplication *application)
 795 {
 796   g_return_val_if_fail (G_IS_APPLICATION (application), NULL);
 797
 798   return application->priv->id;
 799 }
 800
 801 /**
 802  * g_application_set_application_id:
 803  * @application: a #GApplication
 804  * @application_id: the identifier for @application
 805  *
 806  * Sets the unique identifier for @application.
 807  *
 808  * The application id can only be modified if @application has not yet
 809  * been registered.
 810  *
 811  * The application id must be valid.  See g_application_id_is_valid().
 812  *
 813  * Since: 2.28
 814  **/
 815 void
 816 g_application_set_application_id (GApplication *application,
 817                                   const gchar  *application_id)
 818 {
 819   g_return_if_fail (G_IS_APPLICATION (application));
 820
 821   if (g_strcmp0 (application->priv->id, application_id) != 0)
 822     {
 823       g_return_if_fail (g_application_id_is_valid (application_id));
 824       g_return_if_fail (!application->priv->is_registered);
 825
 826       g_free (application->priv->id);
 827       application->priv->id = g_strdup (application_id);
 828
 829       g_object_notify (G_OBJECT (application), "application-id");
 830     }
 831 }
 832
 833 /**
 834  * g_application_get_flags:
 835  * @application: a #GApplication
 836  * @returns: the flags for @application
 837  *
 838  * Gets the flags for @application.
 839  *
 840  * See #GApplicationFlags.
 841  *
 842  * Since: 2.28
 843  **/
 844 GApplicationFlags
 845 g_application_get_flags (GApplication *application)
 846 {
 847   g_return_val_if_fail (G_IS_APPLICATION (application), 0);
 848
 849   return application->priv->flags;
 850 }
 851
 852 /**
 853  * g_application_set_flags:
 854  * @application: a #GApplication
 855  * @flags: the flags for @application
 856  *
 857  * Sets the flags for @application.
 858  *
 859  * The flags can only be modified if @application has not yet been
 860  * registered.
 861  *
 862  * See #GApplicationFlags.
 863  *
 864  * Since: 2.28
 865  **/
 866 void
 867 g_application_set_flags (GApplication      *application,
 868                          GApplicationFlags  flags)
 869 {
 870   g_return_if_fail (G_IS_APPLICATION (application));
 871
 872   if (application->priv->flags != flags)
 873     {
 874       g_return_if_fail (!application->priv->is_registered);
 875
 876       application->priv->flags = flags;
 877
 878       g_object_notify (G_OBJECT (application), "flags");
 879     }
 880 }
 881
 882 /**
 883  * g_application_get_inactivity_timeout:
 884  * @application: a #GApplication
 885  *
 886  * Gets the current inactivity timeout for the application.
 887  *
 888  * This is the amount of time (in milliseconds) after the last call to
 889  * g_application_release() before the application stops running.
 890  *
 891  * Returns: the timeout, in milliseconds
 892  *
 893  * Since: 2.28
 894  **/
 895 guint
 896 g_application_get_inactivity_timeout (GApplication *application)
 897 {
 898   g_return_val_if_fail (G_IS_APPLICATION (application), 0);
 899
 900   return application->priv->inactivity_timeout;
 901 }
 902
 903 /**
 904  * g_application_set_inactivity_timeout:
 905  * @application: a #GApplication
 906  * @inactivity_timeout: the timeout, in milliseconds
 907  *
 908  * Sets the current inactivity timeout for the application.
 909  *
 910  * This is the amount of time (in milliseconds) after the last call to
 911  * g_application_release() before the application stops running.
 912  *
 913  * This call has no side effects of its own.  The value set here is only
 914  * used for next time g_application_release() drops the use count to
 915  * zero.  Any timeouts currently in progress are not impacted.
 916  *
 917  * Since: 2.28
 918  **/
 919 void
 920 g_application_set_inactivity_timeout (GApplication *application,
 921                                       guint         inactivity_timeout)
 922 {
 923   g_return_if_fail (G_IS_APPLICATION (application));
 924
 925   if (application->priv->inactivity_timeout != inactivity_timeout)
 926     {
 927       application->priv->inactivity_timeout = inactivity_timeout;
 928
 929       g_object_notify (G_OBJECT (application), "inactivity-timeout");
 930     }
 931 }
 932 /* Read-only property getters (is registered, is remote) {{{1 */
 933 /**
 934  * g_application_get_is_registered:
 935  * @application: a #GApplication
 936  * @returns: %TRUE if @application is registered
 937  *
 938  * Checks if @application is registered.
 939  *
 940  * An application is registered if g_application_register() has been
 941  * successfully called.
 942  *
 943  * Since: 2.28
 944  **/
 945 gboolean
 946 g_application_get_is_registered (GApplication *application)
 947 {
 948   g_return_val_if_fail (G_IS_APPLICATION (application), FALSE);
 949
 950   return application->priv->is_registered;
 951 }
 952
 953 /**
 954  * g_application_get_is_remote:
 955  * @application: a #GApplication
 956  * @returns: %TRUE if @application is remote
 957  *
 958  * Checks if @application is remote.
 959  *
 960  * If @application is remote then it means that another instance of
 961  * application already exists (the 'primary' instance).  Calls to
 962  * perform actions on @application will result in the actions being
 963  * performed by the primary instance.
 964  *
 965  * The value of this property cannot be accessed before
 966  * g_application_register() has been called.  See
 967  * g_application_get_is_registered().
 968  *
 969  * Since: 2.28
 970  **/
 971 gboolean
 972 g_application_get_is_remote (GApplication *application)
 973 {
 974   g_return_val_if_fail (G_IS_APPLICATION (application), FALSE);
 975   g_return_val_if_fail (application->priv->is_registered, FALSE);
 976
 977   return application->priv->is_remote;
 978 }
 979
 980 /* Register {{{1 */
 981 /**
 982  * g_application_register:
 983  * @application: a #GApplication
 984  * @cancellable: a #GCancellable, or %NULL
 985  * @error: a pointer to a NULL #GError, or %NULL
 986  * @returns: %TRUE if registration succeeded
 987  *
 988  * Attempts registration of the application.
 989  *
 990  * This is the point at which the application discovers if it is the
 991  * primary instance or merely acting as a remote for an already-existing
 992  * primary instance.  This is implemented by attempting to acquire the
 993  * application identifier as a unique bus name on the session bus using
 994  * GDBus.
 995  *
 996  * Due to the internal architecture of GDBus, method calls can be
 997  * dispatched at any time (even if a main loop is not running).  For
 998  * this reason, you must ensure that any object paths that you wish to
 999  * register are registered before calling this function.
1000  *
1001  * If the application has already been registered then %TRUE is
1002  * returned with no work performed.
1003  *
1004  * The #GApplication::startup signal is emitted if registration succeeds
1005  * and @application is the primary instance.
1006  *
1007  * In the event of an error (such as @cancellable being cancelled, or a
1008  * failure to connect to the session bus), %FALSE is returned and @error
1009  * is set appropriately.
1010  *
1011  * Note: the return value of this function is not an indicator that this
1012  * instance is or is not the primary instance of the application.  See
1013  * g_application_get_is_remote() for that.
1014  *
1015  * Since: 2.28
1016  **/
1017 gboolean
1018 g_application_register (GApplication  *application,
1019                         GCancellable  *cancellable,
1020                         GError       **error)
1021 {
1022   g_return_val_if_fail (G_IS_APPLICATION (application), FALSE);
1023
1024   if (!application->priv->is_registered)
1025     {
1026       if (~application->priv->flags & G_APPLICATION_NON_UNIQUE)
1027         {
1028           application->priv->impl =
1029             g_application_impl_register (application, application->priv->id,
1030                                          application->priv->flags,
1031                                          &application->priv->remote_actions,
1032                                          cancellable, error);
1033
1034           if (application->priv->impl == NULL)
1035             return FALSE;
1036         }
1037
1038       application->priv->is_remote = application->priv->remote_actions != NULL;
1039       application->priv->is_registered = TRUE;
1040
1041       g_object_notify (G_OBJECT (application), "is-registered");
1042
1043       if (!application->priv->is_remote)
1044         g_signal_emit (application, g_application_signals[SIGNAL_STARTUP], 0);
1045     }
1046
1047   return TRUE;
1048 }
1049
1050 /* Hold/release {{{1 */
1051 /**
1052  * g_application_hold:
1053  * @application: a #GApplication
1054  *
1055  * Increases the use count of @application.
1056  *
1057  * Use this function to indicate that the application has a reason to
1058  * continue to run.  For example, g_application_hold() is called by GTK+
1059  * when a toplevel window is on the screen.
1060  *
1061  * To cancel the hold, call g_application_release().
1062  **/
1063 void
1064 g_application_hold (GApplication *application)
1065 {
1066   if (application->priv->inactivity_timeout_id)
1067     {
1068       g_source_remove (application->priv->inactivity_timeout_id);
1069       application->priv->inactivity_timeout_id = 0;
1070     }
1071
1072   application->priv->use_count++;
1073 }
1074
1075 static gboolean
1076 inactivity_timeout_expired (gpointer data)
1077 {
1078   GApplication *application = G_APPLICATION (data);
1079
1080   G_APPLICATION_GET_CLASS (application)
1081     ->quit_mainloop (application);
1082
1083   return FALSE;
1084 }
1085
1086
1087 /**
1088  * g_application_release:
1089  * @application: a #GApplication
1090  *
1091  * Decrease the use count of @application.
1092  *
1093  * When the use count reaches zero, the application will stop running.
1094  *
1095  * Never call this function except to cancel the effect of a previous
1096  * call to g_application_hold().
1097  **/
1098 void
1099 g_application_release (GApplication *application)
1100 {
1101   application->priv->use_count--;
1102
1103   if (application->priv->use_count == 0)
1104     {
1105       if (application->priv->inactivity_timeout)
1106         application->priv->inactivity_timeout_id =
1107           g_timeout_add (application->priv->inactivity_timeout,
1108                          inactivity_timeout_expired, application);
1109
1110       else
1111         G_APPLICATION_GET_CLASS (application)
1112           ->quit_mainloop (application);
1113     }
1114 }
1115
1116 /* Activate, Open {{{1 */
1117 /**
1118  * g_application_activate:
1119  * @application: a #GApplication
1120  *
1121  * Activates the application.
1122  *
1123  * In essence, this results in the #GApplication::activate() signal being
1124  * emitted in the primary instance.
1125  *
1126  * The application must be registered before calling this function.
1127  *
1128  * Since: 2.28
1129  **/
1130 void
1131 g_application_activate (GApplication *application)
1132 {
1133   g_return_if_fail (G_IS_APPLICATION (application));
1134   g_return_if_fail (application->priv->is_registered);
1135
1136   if (application->priv->is_remote)
1137     g_application_impl_activate (application->priv->impl,
1138                                  get_platform_data (application));
1139
1140   else
1141     g_signal_emit (application, g_application_signals[SIGNAL_ACTIVATE], 0);
1142 }
1143
1144 /**
1145  * g_application_open:
1146  * @application: a #GApplication
1147  * @files: (array length=n_files): an array of #GFiles to open
1148  * @n_files: the length of the @files array
1149  * @hint: a hint (or ""), but never %NULL
1150  *
1151  * Opens the given files.
1152  *
1153  * In essence, this results in the #GApplication::open signal being emitted
1154  * in the primary instance.
1155  *
1156  * @n_files must be greater than zero.
1157  *
1158  * @hint is simply passed through to the ::open signal.  It is
1159  * intended to be used by applications that have multiple modes for
1160  * opening files (eg: "view" vs "edit", etc).  Unless you have a need
1161  * for this functionality, you should use "".
1162  *
1163  * The application must be registered before calling this function
1164  * and it must have the %G_APPLICATION_HANDLES_OPEN flag set.
1165  *
1166  * Since: 2.28
1167  **/
1168 void
1169 g_application_open (GApplication  *application,
1170                     GFile        **files,
1171                     gint           n_files,
1172                     const gchar   *hint)
1173 {
1174   g_return_if_fail (G_IS_APPLICATION (application));
1175   g_return_if_fail (application->priv->flags &
1176                     G_APPLICATION_HANDLES_OPEN);
1177   g_return_if_fail (application->priv->is_registered);
1178
1179   if (application->priv->is_remote)
1180     g_application_impl_open (application->priv->impl,
1181                              files, n_files, hint,
1182                              get_platform_data (application));
1183
1184   else
1185     g_signal_emit (application, g_application_signals[SIGNAL_OPEN],
1186                    0, files, n_files, hint);
1187 }
1188
1189 /* Run {{{1 */
1190 /**
1191  * g_application_run:
1192  * @application: a #GApplication
1193  * @argc: the argc from main() (or 0 if @argv is %NULL)
1194  * @argv: (array length=argc) (allow-none): the argv from main(), or %NULL
1195  * @returns: the exit status
1196  *
1197  * Runs the application.
1198  *
1199  * This function is intended to be run from main() and its return value
1200  * is intended to be returned by main(). Although you are expected to pass
1201  * the @argc, @argv parameters from main() to this function, it is possible
1202  * to pass %NULL if @argv is not available or commandline handling is not
1203  * required.
1204  *
1205  * First, the local_command_line() virtual function is invoked.
1206  * This function always runs on the local instance. It gets passed a pointer
1207  * to a %NULL-terminated copy of @argv and is expected to remove the arguments
1208  * that it handled (shifting up remaining arguments). See
1209  * <xref linkend="gapplication-example-cmdline2"/> for an example of
1210  * parsing @argv manually. Alternatively, you may use the #GOptionContext API,
1211  * after setting <literal>argc = g_strv_length (argv);</literal>.
1212  *
1213  * The last argument to local_command_line() is a pointer to the @status
1214  * variable which can used to set the exit status that is returned from
1215  * g_application_run().
1216  *
1217  * If local_command_line() returns %TRUE, the command line is expected
1218  * to be completely handled, including possibly registering as the primary
1219  * instance, calling g_application_activate() or g_application_open(), etc.
1220  *
1221  * If local_command_line() returns %FALSE then the application is registered
1222  * and the #GApplication::command-line signal is emitted in the primary
1223  * instance (which may or may not be this instance). The signal handler
1224  * gets passed a #GApplicationCommandline object that (among other things)
1225  * contains the remaining commandline arguments that have not been handled
1226  * by local_command_line().
1227  *
1228  * If the application has the %G_APPLICATION_HANDLES_COMMAND_LINE
1229  * flag set then the default implementation of local_command_line()
1230  * always returns %FALSE immediately, resulting in the commandline
1231  * always being handled in the primary instance.
1232  *
1233  * Otherwise, the default implementation of local_command_line() tries
1234  * to do a couple of things that are probably reasonable for most
1235  * applications.  First, g_application_register() is called to attempt
1236  * to register the application.  If that works, then the command line
1237  * arguments are inspected.  If no commandline arguments are given, then
1238  * g_application_activate() is called.  If commandline arguments are
1239  * given and the %G_APPLICATION_HANDLES_OPEN flag is set then they
1240  * are assumed to be filenames and g_application_open() is called.
1241  *
1242  * If you need to handle commandline arguments that are not filenames,
1243  * and you don't mind commandline handling to happen in the primary
1244  * instance, you should set %G_APPLICATION_HANDLED_COMMAND_LINE and
1245  * process the commandline arguments in your #GApplication::command-line
1246  * signal handler, either manually or using the #GOptionContext API.
1247  *
1248  * If you are interested in doing more complicated local handling of the
1249  * commandline then you should implement your own #GApplication subclass
1250  * and override local_command_line(). In this case, you most likely want
1251  * to return %TRUE from your local_command_line() implementation to
1252  * suppress the default handling. See
1253  * <xref linkend="gapplication-example-cmdline2"/> for an example.
1254  *
1255  * If, after the above is done, the use count of the application is zero
1256  * then the exit status is returned immediately.  If the use count is
1257  * non-zero then the mainloop is run until the use count falls to zero,
1258  * at which point 0 is returned.
1259  *
1260  * If the %G_APPLICATION_IS_SERVICE flag is set, then the exiting at
1261  * use count of zero is delayed for a while (ie: the instance stays
1262  * around to provide its <emphasis>service</emphasis> to others).
1263  *
1264  * Since: 2.28
1265  **/
1266 int
1267 g_application_run (GApplication  *application,
1268                    int            argc,
1269                    char         **argv)
1270 {
1271   gchar **arguments;
1272   int status;
1273   gint i;
1274
1275   g_return_val_if_fail (G_IS_APPLICATION (application), 1);
1276   g_return_val_if_fail (argc == 0 || argv != NULL, 1);
1277
1278   arguments = g_new (gchar *, argc + 1);
1279   for (i = 0; i < argc; i++)
1280     arguments[i] = g_strdup (argv[i]);
1281   arguments[i] = NULL;
1282
1283   if (g_get_prgname () == NULL && argc > 0)
1284     {
1285       gchar *prgname;
1286
1287       prgname = g_path_get_basename (argv[0]);
1288       g_set_prgname (prgname);
1289       g_free (prgname);
1290     }
1291
1292   if (!G_APPLICATION_GET_CLASS (application)
1293         ->local_command_line (application, &arguments, &status))
1294     {
1295       GError *error = NULL;
1296
1297       if (!g_application_register (application, NULL, &error))
1298         {
1299           g_printerr ("%s", error->message);
1300           g_error_free (error);
1301           return 1;
1302         }
1303
1304       if (application->priv->is_remote)
1305         {
1306           GVariant *platform_data;
1307
1308           platform_data = get_platform_data (application);
1309           status = g_application_impl_command_line (application->priv->impl,
1310                                                     arguments, platform_data);
1311         }
1312       else
1313         {
1314           GApplicationCommandLine *cmdline;
1315           GVariant *v;
1316
1317           v = g_variant_new_bytestring_array ((const gchar **) arguments, -1);
1318           cmdline = g_object_new (G_TYPE_APPLICATION_COMMAND_LINE,
1319                                   "arguments", v, NULL);
1320           g_signal_emit (application,
1321                          g_application_signals[SIGNAL_COMMAND_LINE],
1322                          0, cmdline, &status);
1323           g_object_unref (cmdline);
1324         }
1325     }
1326
1327   g_strfreev (arguments);
1328
1329   if (application->priv->flags & G_APPLICATION_IS_SERVICE &&
1330       application->priv->is_registered &&
1331       !application->priv->use_count &&
1332       !application->priv->inactivity_timeout_id)
1333     {
1334       application->priv->inactivity_timeout_id =
1335         g_timeout_add (10000, inactivity_timeout_expired, application);
1336     }
1337
1338   if (application->priv->use_count ||
1339       application->priv->inactivity_timeout_id)
1340     {
1341       G_APPLICATION_GET_CLASS (application)
1342         ->run_mainloop (application);
1343       status = 0;
1344     }
1345
1346   if (application->priv->is_registered)
1347     g_signal_emit (application, g_application_signals[SIGNAL_SHUTDOWN], 0);
1348
1349   if (application->priv->impl)
1350     g_application_impl_flush (application->priv->impl);
1351
1352   g_settings_sync ();
1353
1354   return status;
1355 }
1356
1357 static gboolean
1358 g_application_has_action (GActionGroup *action_group,
1359                           const gchar  *action_name)
1360 {
1361   GApplication *application = G_APPLICATION (action_group);
1362
1363   g_return_val_if_fail (application->priv->is_registered, FALSE);
1364
1365   if (application->priv->remote_actions != NULL)
1366     return g_hash_table_lookup (application->priv->remote_actions,
1367                                 action_name) != NULL;
1368
1369   return application->priv->actions &&
1370          g_action_group_has_action (application->priv->actions, action_name);
1371 }
1372
1373 static gchar **
1374 g_application_list_actions (GActionGroup *action_group)
1375 {
1376   GApplication *application = G_APPLICATION (action_group);
1377
1378   g_return_val_if_fail (application->priv->is_registered, NULL);
1379
1380   if (application->priv->remote_actions != NULL)
1381     {
1382       GHashTableIter iter;
1383       gint n, i = 0;
1384       gchar **keys;
1385       gpointer key;
1386
1387       n = g_hash_table_size (application->priv->remote_actions);
1388       keys = g_new (gchar *, n + 1);
1389
1390       g_hash_table_iter_init (&iter, application->priv->remote_actions);
1391       while (g_hash_table_iter_next (&iter, &key, NULL))
1392         keys[i++] = g_strdup (key);
1393       g_assert_cmpint (i, ==, n);
1394       keys[n] = NULL;
1395
1396       return keys;
1397     }
1398
1399   else if (application->priv->actions != NULL)
1400     return g_action_group_list_actions (application->priv->actions);
1401
1402   else
1403     /* empty string array */
1404     return g_new0 (gchar *, 1);
1405 }
1406
1407 static gboolean
1408 g_application_get_action_enabled (GActionGroup *action_group,
1409                                   const gchar  *action_name)
1410 {
1411   GApplication *application = G_APPLICATION (action_group);
1412
1413   g_return_val_if_fail (application->priv->remote_actions != NULL ||
1414                         application->priv->actions != NULL, FALSE);
1415   g_return_val_if_fail (application->priv->is_registered, FALSE);
1416
1417   if (application->priv->remote_actions)
1418     {
1419       RemoteActionInfo *info;
1420
1421       info = g_hash_table_lookup (application->priv->remote_actions,
1422                                   action_name);
1423
1424       return info && info->enabled;
1425     }
1426
1427   return g_action_group_get_action_enabled (application->priv->actions,
1428                                             action_name);
1429 }
1430
1431 static const GVariantType *
1432 g_application_get_action_parameter_type (GActionGroup *action_group,
1433                                          const gchar  *action_name)
1434 {
1435   GApplication *application = G_APPLICATION (action_group);
1436
1437   g_return_val_if_fail (application->priv->remote_actions != NULL ||
1438                         application->priv->actions != NULL, NULL);
1439   g_return_val_if_fail (application->priv->is_registered, NULL);
1440
1441   if (application->priv->remote_actions)
1442     {
1443       RemoteActionInfo *info;
1444
1445       info = g_hash_table_lookup (application->priv->remote_actions,
1446                                   action_name);
1447
1448       if (info)
1449         return info->parameter_type;
1450       else
1451         return NULL;
1452     }
1453
1454   return g_action_group_get_action_parameter_type (application->priv->actions,
1455                                                    action_name);
1456 }
1457
1458 static const GVariantType *
1459 g_application_get_action_state_type (GActionGroup *action_group,
1460                                      const gchar  *action_name)
1461 {
1462   GApplication *application = G_APPLICATION (action_group);
1463
1464   g_return_val_if_fail (application->priv->remote_actions != NULL ||
1465                         application->priv->actions != NULL, NULL);
1466   g_return_val_if_fail (application->priv->is_registered, NULL);
1467
1468   if (application->priv->remote_actions)
1469     {
1470       RemoteActionInfo *info;
1471
1472       info = g_hash_table_lookup (application->priv->remote_actions,
1473                                   action_name);
1474
1475       if (info && info->state)
1476         return g_variant_get_type (info->state);
1477       else
1478         return NULL;
1479     }
1480
1481   return g_action_group_get_action_state_type (application->priv->actions,
1482                                                action_name);
1483 }
1484
1485 static GVariant *
1486 g_application_get_action_state (GActionGroup *action_group,
1487                                 const gchar  *action_name)
1488 {
1489   GApplication *application = G_APPLICATION (action_group);
1490
1491   g_return_val_if_fail (application->priv->remote_actions != NULL ||
1492                         application->priv->actions != NULL, NULL);
1493   g_return_val_if_fail (application->priv->is_registered, NULL);
1494
1495   if (application->priv->remote_actions)
1496     {
1497       RemoteActionInfo *info;
1498
1499       info = g_hash_table_lookup (application->priv->remote_actions,
1500                                   action_name);
1501
1502       if (info && info->state)
1503         return g_variant_ref (info->state);
1504       else
1505         return NULL;
1506     }
1507
1508   return g_action_group_get_action_state (application->priv->actions,
1509                                           action_name);
1510 }
1511
1512 static void
1513 g_application_change_action_state (GActionGroup *action_group,
1514                                    const gchar  *action_name,
1515                                    GVariant     *value)
1516 {
1517   GApplication *application = G_APPLICATION (action_group);
1518
1519   g_return_if_fail (application->priv->is_remote ||
1520                     application->priv->actions != NULL);
1521   g_return_if_fail (application->priv->is_registered);
1522
1523   if (application->priv->is_remote)
1524     g_application_impl_change_action_state (application->priv->impl,
1525                                             action_name, value,
1526                                             get_platform_data (application));
1527
1528   else
1529     g_action_group_change_action_state (application->priv->actions,
1530                                         action_name, value);
1531 }
1532
1533 static void
1534 g_application_activate_action (GActionGroup *action_group,
1535                                const gchar  *action_name,
1536                                GVariant     *parameter)
1537 {
1538   GApplication *application = G_APPLICATION (action_group);
1539
1540   g_return_if_fail (application->priv->is_remote ||
1541                     application->priv->actions != NULL);
1542   g_return_if_fail (application->priv->is_registered);
1543
1544   if (application->priv->is_remote)
1545     g_application_impl_activate_action (application->priv->impl,
1546                                         action_name, parameter,
1547                                         get_platform_data (application));
1548
1549   else
1550     g_action_group_activate_action (application->priv->actions,
1551                                     action_name, parameter);
1552 }
1553
1554 static void
1555 g_application_action_group_iface_init (GActionGroupInterface *iface)
1556 {
1557   iface->has_action = g_application_has_action;
1558   iface->list_actions = g_application_list_actions;
1559
1560   iface->get_action_enabled = g_application_get_action_enabled;
1561   iface->get_action_parameter_type = g_application_get_action_parameter_type;
1562   iface->get_action_state_type = g_application_get_action_state_type;
1563   iface->get_action_state = g_application_get_action_state;
1564   iface->change_action_state = g_application_change_action_state;
1565   iface->activate_action = g_application_activate_action;
1566 }
1567
1568 /* Epilogue {{{1 */
1569 /* vim:set foldmethod=marker: */