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