2 * Copyright © 2010 Codethink Limited
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.
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.
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.
19 * Authors: Ryan Lortie <desrt@desrt.ca>
25 #include "gapplication.h"
27 #include "gapplicationcommandline.h"
28 #include "gsimpleactiongroup.h"
29 #include "gapplicationimpl.h"
30 #include "gactiongroup.h"
31 #include "gactionmap.h"
32 #include "gmenumodel.h"
33 #include "gsettings.h"
35 #include "gioenumtypes.h"
44 * SECTION:gapplication
45 * @title: GApplication
46 * @short_description: Core application class
48 * A #GApplication is the foundation of an application, unique for a
49 * given application identifier. The GApplication class wraps some
50 * low-level platform-specific services and is intended to act as the
51 * foundation for higher-level application classes such as
52 * #GtkApplication or #MxApplication. In general, you should not use
53 * this class outside of a higher level framework.
55 * One of the core features that GApplication provides is process
56 * uniqueness, in the context of a "session". The session concept is
57 * platform-dependent, but corresponds roughly to a graphical desktop
58 * login. When your application is launched again, its arguments
59 * are passed through platform communication to the already running
60 * program. The already running instance of the program is called the
61 * <firstterm>primary instance</firstterm>. On Linux, the D-Bus session
62 * bus is used for communication.
64 * GApplication provides convenient life cycle management by maintaining
65 * a <firstterm>use count</firstterm> for the primary application instance.
66 * The use count can be changed using g_application_hold() and
67 * g_application_release(). If it drops to zero, the application exits.
68 * Higher-level classes such as #GtkApplication employ the use count to
69 * ensure that the application stays alive as long as it has any opened
72 * Before using GApplication, you must choose an "application identifier".
73 * The expected form of an application identifier is very close to that of
74 * of a <ulink url="http://dbus.freedesktop.org/doc/dbus-specification.html#message-protocol-names-interface">DBus bus name</ulink>.
75 * Examples include: "com.example.MyApp", "org.example.internal-apps.Calculator".
76 * For details on valid application identifiers, see g_application_id_is_valid().
78 * On Linux, the application identifier is claimed as a well-known bus name
79 * on the user's session bus. This means that the uniqueness of your
80 * application is scoped to the current session. It also means that your
81 * application may provide additional services (through registration of other
82 * object paths) at that bus name. The registration of these object paths
83 * should be done with the shared GDBus session bus. Note that due to the
84 * internal architecture of GDBus, method calls can be dispatched at any time
85 * (even if a main loop is not running). For this reason, you must ensure that
86 * any object paths that you wish to register are registered before #GApplication
87 * attempts to acquire the bus name of your application (which happens in
88 * g_application_register()). Unfortunately, this means that you cannot use
89 * g_application_get_is_remote() to decide if you want to register object paths.
91 * GApplication also implements the #GActionGroup and #GActionMap
92 * interfaces and lets you easily export actions by adding them with
93 * g_action_map_add_action(). When invoking an action by calling
94 * g_action_group_activate_action() on the application, it is always
95 * invoked in the primary instance. The actions are also exported on
96 * the session bus, and GIO provides the #GDBusActionGroup wrapper to
97 * conveniently access them remotely. Additionally, g_application_set_app_menu()
98 * and g_application_set_menubar() can be used to export representation
99 * data for the actions, in the form of #GMenuModels. GIO provides
100 * a #GDBusMenuModel wrapper for remote access to exported #GMenuModels.
102 * There is a number of different entry points into a GApplication:
104 * <listitem>via 'Activate' (i.e. just starting the application)</listitem>
105 * <listitem>via 'Open' (i.e. opening some files)</listitem>
106 * <listitem>by handling a command-line</listitem>
107 * <listitem>via activating an action</listitem>
109 * The #GApplication::startup signal lets you handle the application
110 * initialization for all of these in a single place.
112 * Regardless of which of these entry points is used to start the application,
113 * GApplication passes some <firstterm id="platform-data">platform
114 * data</firstterm> from the launching instance to the primary instance,
115 * in the form of a #GVariant dictionary mapping strings to variants.
116 * To use platform data, override the @before_emit or @after_emit virtual
117 * functions in your #GApplication subclass. When dealing with
118 * #GApplicationCommandline objects, the platform data is directly
119 * available via g_application_command_line_get_cwd(),
120 * g_application_command_line_get_environ() and
121 * g_application_command_line_get_platform_data().
123 * As the name indicates, the platform data may vary depending on the
124 * operating system, but it always includes the current directory (key
125 * "cwd"), and optionally the environment (ie the set of environment
126 * variables and their values) of the calling process (key "environ").
127 * The environment is only added to the platform data if the
128 * #G_APPLICATION_SEND_ENVIONMENT flag is set. GApplication subclasses
129 * can add their own platform data by overriding the @add_platform_data
130 * virtual function. For instance, #GtkApplication adds startup notification
133 * To parse commandline arguments you may handle the
134 * #GApplication::command-line signal or override the local_command_line()
135 * vfunc, to parse them in either the primary instance or the local instance,
138 * <example id="gapplication-example-open"><title>Opening files with a GApplication</title>
140 * <xi:include xmlns:xi="http://www.w3.org/2001/XInclude" parse="text" href="../../../../gio/tests/gapplication-example-open.c">
141 * <xi:fallback>FIXME: MISSING XINCLUDE CONTENT</xi:fallback>
146 * <example id="gapplication-example-actions"><title>A GApplication with actions</title>
148 * <xi:include xmlns:xi="http://www.w3.org/2001/XInclude" parse="text" href="../../../../gio/tests/gapplication-example-actions.c">
149 * <xi:fallback>FIXME: MISSING XINCLUDE CONTENT</xi:fallback>
154 * <example id="gapplication-example-menu"><title>A GApplication with menus</title>
156 * <xi:include xmlns:xi="http://www.w3.org/2001/XInclude" parse="text" href="../../../../gio/tests/gapplication-example-menu.c">
157 * <xi:fallback>FIXME: MISSING XINCLUDE CONTENT</xi:fallback>
165 * @startup: invoked on the primary instance immediately after registration
166 * @shutdown: invoked only on the registered primary instance immediately
167 * after the main loop terminates
168 * @activate: invoked on the primary instance when an activation occurs
169 * @open: invoked on the primary instance when there are files to open
170 * @command_line: invoked on the primary instance when a command-line is
171 * not handled locally
172 * @local_command_line: invoked (locally) when the process has been invoked
173 * via commandline execution (as opposed to, say, D-Bus activation - which
174 * is not currently supported by GApplication). The virtual function has
175 * the chance to inspect (and possibly replace) the list of command line
176 * arguments. See g_application_run() for more information.
177 * @before_emit: invoked on the primary instance before 'activate', 'open',
178 * 'command-line' or any action invocation, gets the 'platform data' from
179 * the calling instance
180 * @after_emit: invoked on the primary instance after 'activate', 'open',
181 * 'command-line' or any action invocation, gets the 'platform data' from
182 * the calling instance
183 * @add_platform_data: invoked (locally) to add 'platform data' to be sent to
184 * the primary instance when activating, opening or invoking actions
185 * @quit_mainloop: Used to be invoked on the primary instance when the use
186 * count of the application drops to zero (and after any inactivity
187 * timeout, if requested). Not used anymore since 2.32
188 * @run_mainloop: Used to be invoked on the primary instance from
189 * g_application_run() if the use-count is non-zero. Since 2.32,
190 * GApplication is iterating the main context directly and is not
191 * using @run_mainloop anymore
193 * Virtual function table for #GApplication.
198 struct _GApplicationPrivate
200 GApplicationFlags flags
;
203 GActionGroup
*actions
;
204 GMenuModel
*app_menu
;
207 guint inactivity_timeout_id
;
208 guint inactivity_timeout
;
211 guint is_registered
: 1;
213 guint did_startup
: 1;
214 guint did_shutdown
: 1;
216 GActionGroup
*remote_actions
;
217 GApplicationImpl
*impl
;
227 PROP_INACTIVITY_TIMEOUT
,
244 static guint g_application_signals
[NR_SIGNALS
];
246 static void g_application_action_group_iface_init (GActionGroupInterface
*);
247 static void g_application_action_map_iface_init (GActionMapInterface
*);
248 G_DEFINE_TYPE_WITH_CODE (GApplication
, g_application
, G_TYPE_OBJECT
,
249 G_IMPLEMENT_INTERFACE (G_TYPE_ACTION_GROUP
, g_application_action_group_iface_init
)
250 G_IMPLEMENT_INTERFACE (G_TYPE_ACTION_MAP
, g_application_action_map_iface_init
))
252 /* vfunc defaults {{{1 */
254 g_application_real_before_emit (GApplication
*application
,
255 GVariant
*platform_data
)
260 g_application_real_after_emit (GApplication
*application
,
261 GVariant
*platform_data
)
266 g_application_real_startup (GApplication
*application
)
268 application
->priv
->did_startup
= TRUE
;
272 g_application_real_shutdown (GApplication
*application
)
274 application
->priv
->did_shutdown
= TRUE
;
278 g_application_real_activate (GApplication
*application
)
280 if (!g_signal_has_handler_pending (application
,
281 g_application_signals
[SIGNAL_ACTIVATE
],
283 G_APPLICATION_GET_CLASS (application
)->activate
== g_application_real_activate
)
285 static gboolean warned
;
290 g_warning ("Your application does not implement "
291 "g_application_activate() and has no handlers connected "
292 "to the 'activate' signal. It should do one of these.");
298 g_application_real_open (GApplication
*application
,
303 if (!g_signal_has_handler_pending (application
,
304 g_application_signals
[SIGNAL_OPEN
],
306 G_APPLICATION_GET_CLASS (application
)->open
== g_application_real_open
)
308 static gboolean warned
;
313 g_warning ("Your application claims to support opening files "
314 "but does not implement g_application_open() and has no "
315 "handlers connected to the 'open' signal.");
321 g_application_real_command_line (GApplication
*application
,
322 GApplicationCommandLine
*cmdline
)
324 if (!g_signal_has_handler_pending (application
,
325 g_application_signals
[SIGNAL_COMMAND_LINE
],
327 G_APPLICATION_GET_CLASS (application
)->command_line
== g_application_real_command_line
)
329 static gboolean warned
;
334 g_warning ("Your application claims to support custom command line "
335 "handling but does not implement g_application_command_line() "
336 "and has no handlers connected to the 'command-line' signal.");
345 g_application_real_local_command_line (GApplication
*application
,
349 if (application
->priv
->flags
& G_APPLICATION_HANDLES_COMMAND_LINE
)
354 GError
*error
= NULL
;
357 if (!g_application_register (application
, NULL
, &error
))
359 g_critical ("%s", error
->message
);
360 g_error_free (error
);
365 n_args
= g_strv_length (*arguments
);
367 if (application
->priv
->flags
& G_APPLICATION_IS_SERVICE
)
369 if ((*exit_status
= n_args
> 1))
371 g_printerr ("GApplication service mode takes no arguments.\n");
372 application
->priv
->flags
&= ~G_APPLICATION_IS_SERVICE
;
380 g_application_activate (application
);
386 if (~application
->priv
->flags
& G_APPLICATION_HANDLES_OPEN
)
388 g_critical ("This application can not open files.");
397 n_files
= n_args
- 1;
398 files
= g_new (GFile
*, n_files
);
400 for (i
= 0; i
< n_files
; i
++)
401 files
[i
] = g_file_new_for_commandline_arg ((*arguments
)[i
+ 1]);
403 g_application_open (application
, files
, n_files
, "");
405 for (i
= 0; i
< n_files
; i
++)
406 g_object_unref (files
[i
]);
418 g_application_real_add_platform_data (GApplication
*application
,
419 GVariantBuilder
*builder
)
423 /* GObject implementation stuff {{{1 */
425 g_application_set_property (GObject
*object
,
430 GApplication
*application
= G_APPLICATION (object
);
434 case PROP_APPLICATION_ID
:
435 g_application_set_application_id (application
,
436 g_value_get_string (value
));
440 g_application_set_flags (application
, g_value_get_flags (value
));
443 case PROP_INACTIVITY_TIMEOUT
:
444 g_application_set_inactivity_timeout (application
,
445 g_value_get_uint (value
));
448 case PROP_ACTION_GROUP
:
449 g_clear_object (&application
->priv
->actions
);
450 application
->priv
->actions
= g_value_dup_object (value
);
454 g_application_set_app_menu (application
, g_value_get_object (value
));
458 g_application_set_menubar (application
, g_value_get_object (value
));
462 g_assert_not_reached ();
467 * g_application_set_action_group:
468 * @application: a #GApplication
469 * @action_group: (allow-none): a #GActionGroup, or %NULL
471 * This used to be how actions were associated with a #GApplication.
472 * Now there is #GActionMap for that.
476 * Deprecated:2.32:Use the #GActionMap interface instead. Never ever
477 * mix use of this API with use of #GActionMap on the same @application
478 * or things will go very badly wrong. This function is known to
479 * introduce buggy behaviour (ie: signals not emitted on changes to the
480 * action group), so you should really use #GActionMap instead.
483 g_application_set_action_group (GApplication
*application
,
484 GActionGroup
*action_group
)
486 g_return_if_fail (G_IS_APPLICATION (application
));
487 g_return_if_fail (!application
->priv
->is_registered
);
489 if (application
->priv
->actions
!= NULL
)
490 g_object_unref (application
->priv
->actions
);
492 application
->priv
->actions
= action_group
;
494 if (application
->priv
->actions
!= NULL
)
495 g_object_ref (application
->priv
->actions
);
499 * g_application_set_app_menu:
500 * @application: a #GApplication
501 * @app_menu: (allow-none): a #GMenuModel, or %NULL
503 * Sets or unsets the application menu for @application.
505 * The application menu is a single menu containing items that typically
506 * impact the application as a whole, rather than acting on a specific
507 * window or document. For example, you would expect to see
508 * "Preferences" or "Quit" in an application menu, but not "Save" or
511 * If supported, the application menu will be rendered by the desktop
517 g_application_set_app_menu (GApplication
*application
,
518 GMenuModel
*app_menu
)
520 g_return_if_fail (G_IS_APPLICATION (application
));
522 if (app_menu
!= application
->priv
->app_menu
)
524 if (application
->priv
->app_menu
!= NULL
)
525 g_object_unref (application
->priv
->app_menu
);
527 application
->priv
->app_menu
= app_menu
;
529 if (application
->priv
->app_menu
!= NULL
)
530 g_object_ref (application
->priv
->app_menu
);
532 g_object_notify (G_OBJECT (application
), "app-menu");
537 * g_application_get_app_menu:
538 * @application: a #GApplication
540 * Returns the menu model that has been set with
541 * g_application_set_app_menu().
543 * Returns: the application menu of @application
548 g_application_get_app_menu (GApplication
*application
)
550 g_return_val_if_fail (G_IS_APPLICATION (application
), NULL
);
552 return application
->priv
->app_menu
;
556 * g_application_set_menubar:
557 * @application: a #GApplication
558 * @menubar: (allow-none): a #GMenuModel, or %NULL
560 * Sets or unsets the menubar for windows of @application.
562 * This is a menubar in the traditional sense.
564 * Depending on the desktop environment, this may appear at the top of
565 * each window, or at the top of the screen. In some environments, if
566 * both the application menu and the menubar are set, the application
567 * menu will be presented as if it were the first item of the menubar.
568 * Other environments treat the two as completely separate -- for
569 * example, the application menu may be rendered by the desktop shell
570 * while the menubar (if set) remains in each individual window.
575 g_application_set_menubar (GApplication
*application
,
578 g_return_if_fail (G_IS_APPLICATION (application
));
580 if (menubar
!= application
->priv
->menubar
)
582 if (application
->priv
->menubar
!= NULL
)
583 g_object_unref (application
->priv
->menubar
);
585 application
->priv
->menubar
= menubar
;
587 if (application
->priv
->menubar
!= NULL
)
588 g_object_ref (application
->priv
->menubar
);
590 g_object_notify (G_OBJECT (application
), "menubar");
595 * g_application_get_menubar:
596 * @application: a #GApplication
598 * Returns the menu model that has been set with
599 * g_application_set_menubar().
601 * Returns: the menubar for windows of @application
606 g_application_get_menubar (GApplication
*application
)
608 g_return_val_if_fail (G_IS_APPLICATION (application
), NULL
);
610 return application
->priv
->menubar
;
614 g_application_get_property (GObject
*object
,
619 GApplication
*application
= G_APPLICATION (object
);
623 case PROP_APPLICATION_ID
:
624 g_value_set_string (value
,
625 g_application_get_application_id (application
));
629 g_value_set_flags (value
,
630 g_application_get_flags (application
));
633 case PROP_IS_REGISTERED
:
634 g_value_set_boolean (value
,
635 g_application_get_is_registered (application
));
639 g_value_set_boolean (value
,
640 g_application_get_is_remote (application
));
643 case PROP_INACTIVITY_TIMEOUT
:
644 g_value_set_uint (value
,
645 g_application_get_inactivity_timeout (application
));
649 g_value_set_object (value
,
650 g_application_get_app_menu (application
));
654 g_value_set_object (value
,
655 g_application_get_menubar (application
));
659 g_assert_not_reached ();
664 g_application_constructed (GObject
*object
)
666 GApplication
*application
= G_APPLICATION (object
);
668 g_assert (application
->priv
->id
!= NULL
);
670 if (g_application_get_default () == NULL
)
671 g_application_set_default (application
);
675 g_application_finalize (GObject
*object
)
677 GApplication
*application
= G_APPLICATION (object
);
679 if (application
->priv
->impl
)
680 g_application_impl_destroy (application
->priv
->impl
);
681 g_free (application
->priv
->id
);
683 if (g_application_get_default () == application
)
684 g_application_set_default (NULL
);
686 if (application
->priv
->app_menu
)
687 g_object_unref (application
->priv
->app_menu
);
689 if (application
->priv
->menubar
)
690 g_object_unref (application
->priv
->menubar
);
692 if (application
->priv
->actions
)
693 g_object_unref (application
->priv
->actions
);
695 G_OBJECT_CLASS (g_application_parent_class
)
700 g_application_init (GApplication
*application
)
702 application
->priv
= G_TYPE_INSTANCE_GET_PRIVATE (application
,
704 GApplicationPrivate
);
706 application
->priv
->actions
= G_ACTION_GROUP (g_simple_action_group_new ());
708 /* application->priv->actions is the one and only ref on the group, so when
709 * we dispose, the action group will die, disconnecting all signals.
711 g_signal_connect_swapped (application
->priv
->actions
, "action-added",
712 G_CALLBACK (g_action_group_action_added
), application
);
713 g_signal_connect_swapped (application
->priv
->actions
, "action-enabled-changed",
714 G_CALLBACK (g_action_group_action_enabled_changed
), application
);
715 g_signal_connect_swapped (application
->priv
->actions
, "action-state-changed",
716 G_CALLBACK (g_action_group_action_state_changed
), application
);
717 g_signal_connect_swapped (application
->priv
->actions
, "action-removed",
718 G_CALLBACK (g_action_group_action_removed
), application
);
722 g_application_class_init (GApplicationClass
*class)
724 GObjectClass
*object_class
= G_OBJECT_CLASS (class);
726 object_class
->constructed
= g_application_constructed
;
727 object_class
->finalize
= g_application_finalize
;
728 object_class
->get_property
= g_application_get_property
;
729 object_class
->set_property
= g_application_set_property
;
731 class->before_emit
= g_application_real_before_emit
;
732 class->after_emit
= g_application_real_after_emit
;
733 class->startup
= g_application_real_startup
;
734 class->shutdown
= g_application_real_shutdown
;
735 class->activate
= g_application_real_activate
;
736 class->open
= g_application_real_open
;
737 class->command_line
= g_application_real_command_line
;
738 class->local_command_line
= g_application_real_local_command_line
;
739 class->add_platform_data
= g_application_real_add_platform_data
;
741 g_object_class_install_property (object_class
, PROP_APPLICATION_ID
,
742 g_param_spec_string ("application-id",
743 P_("Application identifier"),
744 P_("The unique identifier for the application"),
745 NULL
, G_PARAM_READWRITE
| G_PARAM_CONSTRUCT
|
746 G_PARAM_STATIC_STRINGS
));
748 g_object_class_install_property (object_class
, PROP_FLAGS
,
749 g_param_spec_flags ("flags",
750 P_("Application flags"),
751 P_("Flags specifying the behaviour of the application"),
752 G_TYPE_APPLICATION_FLAGS
, G_APPLICATION_FLAGS_NONE
,
753 G_PARAM_READWRITE
| G_PARAM_STATIC_STRINGS
));
755 g_object_class_install_property (object_class
, PROP_IS_REGISTERED
,
756 g_param_spec_boolean ("is-registered",
758 P_("If g_application_register() has been called"),
759 FALSE
, G_PARAM_READABLE
| G_PARAM_STATIC_STRINGS
));
761 g_object_class_install_property (object_class
, PROP_IS_REMOTE
,
762 g_param_spec_boolean ("is-remote",
764 P_("If this application instance is remote"),
765 FALSE
, G_PARAM_READABLE
| G_PARAM_STATIC_STRINGS
));
767 g_object_class_install_property (object_class
, PROP_INACTIVITY_TIMEOUT
,
768 g_param_spec_uint ("inactivity-timeout",
769 P_("Inactivity timeout"),
770 P_("Time (ms) to stay alive after becoming idle"),
772 G_PARAM_READWRITE
| G_PARAM_STATIC_STRINGS
));
774 g_object_class_install_property (object_class
, PROP_ACTION_GROUP
,
775 g_param_spec_object ("action-group",
777 P_("The group of actions that the application exports"),
779 G_PARAM_DEPRECATED
| G_PARAM_WRITABLE
| G_PARAM_STATIC_STRINGS
));
781 g_object_class_install_property (object_class
, PROP_APP_MENU
,
782 g_param_spec_object ("app-menu",
783 P_("Application menu"),
784 P_("The GMenuModel for the application menu"),
786 G_PARAM_READWRITE
| G_PARAM_STATIC_STRINGS
));
788 g_object_class_install_property (object_class
, PROP_MENUBAR
,
789 g_param_spec_object ("menubar",
791 P_("The GMenuModel for the menubar"),
793 G_PARAM_READWRITE
| G_PARAM_STATIC_STRINGS
));
796 * GApplication::startup:
797 * @application: the application
799 * The ::startup signal is emitted on the primary instance immediately
800 * after registration. See g_application_register().
802 g_application_signals
[SIGNAL_STARTUP
] =
803 g_signal_new ("startup", G_TYPE_APPLICATION
, G_SIGNAL_RUN_FIRST
,
804 G_STRUCT_OFFSET (GApplicationClass
, startup
),
805 NULL
, NULL
, g_cclosure_marshal_VOID__VOID
, G_TYPE_NONE
, 0);
808 * GApplication::shutdown:
809 * @application: the application
811 * The ::shutdown signal is emitted only on the registered primary instance
812 * immediately after the main loop terminates.
814 g_application_signals
[SIGNAL_SHUTDOWN
] =
815 g_signal_new ("shutdown", G_TYPE_APPLICATION
, G_SIGNAL_RUN_LAST
,
816 G_STRUCT_OFFSET (GApplicationClass
, shutdown
),
817 NULL
, NULL
, g_cclosure_marshal_VOID__VOID
, G_TYPE_NONE
, 0);
820 * GApplication::activate:
821 * @application: the application
823 * The ::activate signal is emitted on the primary instance when an
824 * activation occurs. See g_application_activate().
826 g_application_signals
[SIGNAL_ACTIVATE
] =
827 g_signal_new ("activate", G_TYPE_APPLICATION
, G_SIGNAL_RUN_LAST
,
828 G_STRUCT_OFFSET (GApplicationClass
, activate
),
829 NULL
, NULL
, g_cclosure_marshal_VOID__VOID
, G_TYPE_NONE
, 0);
833 * GApplication::open:
834 * @application: the application
835 * @files: (array length=n_files) (element-type GFile): an array of #GFiles
836 * @n_files: the length of @files
837 * @hint: a hint provided by the calling instance
839 * The ::open signal is emitted on the primary instance when there are
840 * files to open. See g_application_open() for more information.
842 g_application_signals
[SIGNAL_OPEN
] =
843 g_signal_new ("open", G_TYPE_APPLICATION
, G_SIGNAL_RUN_LAST
,
844 G_STRUCT_OFFSET (GApplicationClass
, open
),
846 G_TYPE_NONE
, 3, G_TYPE_POINTER
, G_TYPE_INT
, G_TYPE_STRING
);
849 * GApplication::command-line:
850 * @application: the application
851 * @command_line: a #GApplicationCommandLine representing the
854 * The ::command-line signal is emitted on the primary instance when
855 * a commandline is not handled locally. See g_application_run() and
856 * the #GApplicationCommandline documentation for more information.
858 * Returns: An integer that is set as the exit status for the calling
859 * process. See g_application_command_line_set_exit_status().
861 g_application_signals
[SIGNAL_COMMAND_LINE
] =
862 g_signal_new ("command-line", G_TYPE_APPLICATION
, G_SIGNAL_RUN_LAST
,
863 G_STRUCT_OFFSET (GApplicationClass
, command_line
),
864 g_signal_accumulator_first_wins
, NULL
,
866 G_TYPE_INT
, 1, G_TYPE_APPLICATION_COMMAND_LINE
);
868 g_type_class_add_private (class, sizeof (GApplicationPrivate
));
872 get_platform_data (GApplication
*application
)
874 GVariantBuilder
*builder
;
877 builder
= g_variant_builder_new (G_VARIANT_TYPE ("a{sv}"));
880 gchar
*cwd
= g_get_current_dir ();
881 g_variant_builder_add (builder
, "{sv}", "cwd",
882 g_variant_new_bytestring (cwd
));
886 if (application
->priv
->flags
& G_APPLICATION_SEND_ENVIRONMENT
)
891 envp
= g_get_environ ();
892 array
= g_variant_new_bytestring_array ((const gchar
**) envp
, -1);
895 g_variant_builder_add (builder
, "{sv}", "environ", array
);
898 G_APPLICATION_GET_CLASS (application
)->
899 add_platform_data (application
, builder
);
901 result
= g_variant_builder_end (builder
);
902 g_variant_builder_unref (builder
);
907 /* Application ID validity {{{1 */
910 * g_application_id_is_valid:
911 * @application_id: a potential application identifier
913 * Checks if @application_id is a valid application identifier.
915 * A valid ID is required for calls to g_application_new() and
916 * g_application_set_application_id().
918 * For convenience, the restrictions on application identifiers are
921 * <listitem>Application identifiers must contain only the ASCII characters "[A-Z][a-z][0-9]_-." and must not begin with a digit.</listitem>
922 * <listitem>Application identifiers must contain at least one '.' (period) character (and thus at least three elements).</listitem>
923 * <listitem>Application identifiers must not begin or end with a '.' (period) character.</listitem>
924 * <listitem>Application identifiers must not contain consecutive '.' (period) characters.</listitem>
925 * <listitem>Application identifiers must not exceed 255 characters.</listitem>
928 * Returns: %TRUE if @application_id is valid
931 g_application_id_is_valid (const gchar
*application_id
)
937 len
= strlen (application_id
);
942 if (!g_ascii_isalpha (application_id
[0]))
945 if (application_id
[len
-1] == '.')
951 for (; *application_id
; application_id
++)
953 if (g_ascii_isalnum (*application_id
) ||
954 (*application_id
== '-') ||
955 (*application_id
== '_'))
959 else if (allow_dot
&& *application_id
== '.')
974 /* Public Constructor {{{1 */
977 * @application_id: the application id
978 * @flags: the application flags
980 * Creates a new #GApplication instance.
982 * This function calls g_type_init() for you.
984 * The application id must be valid. See g_application_id_is_valid().
986 * Returns: a new #GApplication instance
989 g_application_new (const gchar
*application_id
,
990 GApplicationFlags flags
)
992 g_return_val_if_fail (g_application_id_is_valid (application_id
), NULL
);
996 return g_object_new (G_TYPE_APPLICATION
,
997 "application-id", application_id
,
1002 /* Simple get/set: application id, flags, inactivity timeout {{{1 */
1004 * g_application_get_application_id:
1005 * @application: a #GApplication
1007 * Gets the unique identifier for @application.
1009 * Returns: the identifier for @application, owned by @application
1014 g_application_get_application_id (GApplication
*application
)
1016 g_return_val_if_fail (G_IS_APPLICATION (application
), NULL
);
1018 return application
->priv
->id
;
1022 * g_application_set_application_id:
1023 * @application: a #GApplication
1024 * @application_id: the identifier for @application
1026 * Sets the unique identifier for @application.
1028 * The application id can only be modified if @application has not yet
1031 * The application id must be valid. See g_application_id_is_valid().
1036 g_application_set_application_id (GApplication
*application
,
1037 const gchar
*application_id
)
1039 g_return_if_fail (G_IS_APPLICATION (application
));
1041 if (g_strcmp0 (application
->priv
->id
, application_id
) != 0)
1043 g_return_if_fail (g_application_id_is_valid (application_id
));
1044 g_return_if_fail (!application
->priv
->is_registered
);
1046 g_free (application
->priv
->id
);
1047 application
->priv
->id
= g_strdup (application_id
);
1049 g_object_notify (G_OBJECT (application
), "application-id");
1054 * g_application_get_flags:
1055 * @application: a #GApplication
1057 * Gets the flags for @application.
1059 * See #GApplicationFlags.
1061 * Returns: the flags for @application
1066 g_application_get_flags (GApplication
*application
)
1068 g_return_val_if_fail (G_IS_APPLICATION (application
), 0);
1070 return application
->priv
->flags
;
1074 * g_application_set_flags:
1075 * @application: a #GApplication
1076 * @flags: the flags for @application
1078 * Sets the flags for @application.
1080 * The flags can only be modified if @application has not yet been
1083 * See #GApplicationFlags.
1088 g_application_set_flags (GApplication
*application
,
1089 GApplicationFlags flags
)
1091 g_return_if_fail (G_IS_APPLICATION (application
));
1093 if (application
->priv
->flags
!= flags
)
1095 g_return_if_fail (!application
->priv
->is_registered
);
1097 application
->priv
->flags
= flags
;
1099 g_object_notify (G_OBJECT (application
), "flags");
1104 * g_application_get_inactivity_timeout:
1105 * @application: a #GApplication
1107 * Gets the current inactivity timeout for the application.
1109 * This is the amount of time (in milliseconds) after the last call to
1110 * g_application_release() before the application stops running.
1112 * Returns: the timeout, in milliseconds
1117 g_application_get_inactivity_timeout (GApplication
*application
)
1119 g_return_val_if_fail (G_IS_APPLICATION (application
), 0);
1121 return application
->priv
->inactivity_timeout
;
1125 * g_application_set_inactivity_timeout:
1126 * @application: a #GApplication
1127 * @inactivity_timeout: the timeout, in milliseconds
1129 * Sets the current inactivity timeout for the application.
1131 * This is the amount of time (in milliseconds) after the last call to
1132 * g_application_release() before the application stops running.
1134 * This call has no side effects of its own. The value set here is only
1135 * used for next time g_application_release() drops the use count to
1136 * zero. Any timeouts currently in progress are not impacted.
1141 g_application_set_inactivity_timeout (GApplication
*application
,
1142 guint inactivity_timeout
)
1144 g_return_if_fail (G_IS_APPLICATION (application
));
1146 if (application
->priv
->inactivity_timeout
!= inactivity_timeout
)
1148 application
->priv
->inactivity_timeout
= inactivity_timeout
;
1150 g_object_notify (G_OBJECT (application
), "inactivity-timeout");
1153 /* Read-only property getters (is registered, is remote) {{{1 */
1155 * g_application_get_is_registered:
1156 * @application: a #GApplication
1158 * Checks if @application is registered.
1160 * An application is registered if g_application_register() has been
1161 * successfully called.
1163 * Returns: %TRUE if @application is registered
1168 g_application_get_is_registered (GApplication
*application
)
1170 g_return_val_if_fail (G_IS_APPLICATION (application
), FALSE
);
1172 return application
->priv
->is_registered
;
1176 * g_application_get_is_remote:
1177 * @application: a #GApplication
1179 * Checks if @application is remote.
1181 * If @application is remote then it means that another instance of
1182 * application already exists (the 'primary' instance). Calls to
1183 * perform actions on @application will result in the actions being
1184 * performed by the primary instance.
1186 * The value of this property cannot be accessed before
1187 * g_application_register() has been called. See
1188 * g_application_get_is_registered().
1190 * Returns: %TRUE if @application is remote
1195 g_application_get_is_remote (GApplication
*application
)
1197 g_return_val_if_fail (G_IS_APPLICATION (application
), FALSE
);
1198 g_return_val_if_fail (application
->priv
->is_registered
, FALSE
);
1200 return application
->priv
->is_remote
;
1205 * g_application_register:
1206 * @application: a #GApplication
1207 * @cancellable: a #GCancellable, or %NULL
1208 * @error: a pointer to a NULL #GError, or %NULL
1210 * Attempts registration of the application.
1212 * This is the point at which the application discovers if it is the
1213 * primary instance or merely acting as a remote for an already-existing
1214 * primary instance. This is implemented by attempting to acquire the
1215 * application identifier as a unique bus name on the session bus using
1218 * Due to the internal architecture of GDBus, method calls can be
1219 * dispatched at any time (even if a main loop is not running). For
1220 * this reason, you must ensure that any object paths that you wish to
1221 * register are registered before calling this function.
1223 * If the application has already been registered then %TRUE is
1224 * returned with no work performed.
1226 * The #GApplication::startup signal is emitted if registration succeeds
1227 * and @application is the primary instance.
1229 * In the event of an error (such as @cancellable being cancelled, or a
1230 * failure to connect to the session bus), %FALSE is returned and @error
1231 * is set appropriately.
1233 * Note: the return value of this function is not an indicator that this
1234 * instance is or is not the primary instance of the application. See
1235 * g_application_get_is_remote() for that.
1237 * Returns: %TRUE if registration succeeded
1242 g_application_register (GApplication
*application
,
1243 GCancellable
*cancellable
,
1246 g_return_val_if_fail (G_IS_APPLICATION (application
), FALSE
);
1248 if (!application
->priv
->is_registered
)
1250 if (~application
->priv
->flags
& G_APPLICATION_NON_UNIQUE
)
1252 application
->priv
->impl
=
1253 g_application_impl_register (application
, application
->priv
->id
,
1254 application
->priv
->flags
,
1255 &application
->priv
->remote_actions
,
1256 cancellable
, error
);
1258 if (application
->priv
->impl
== NULL
)
1262 application
->priv
->is_remote
= application
->priv
->remote_actions
!= NULL
;
1263 application
->priv
->is_registered
= TRUE
;
1265 g_object_notify (G_OBJECT (application
), "is-registered");
1267 if (!application
->priv
->is_remote
)
1269 g_signal_emit (application
, g_application_signals
[SIGNAL_STARTUP
], 0);
1271 if (!application
->priv
->did_startup
)
1272 g_critical ("GApplication subclass '%s' failed to chain up on"
1273 " ::startup (from start of override function)",
1274 G_OBJECT_TYPE_NAME (application
));
1281 /* Hold/release {{{1 */
1283 * g_application_hold:
1284 * @application: a #GApplication
1286 * Increases the use count of @application.
1288 * Use this function to indicate that the application has a reason to
1289 * continue to run. For example, g_application_hold() is called by GTK+
1290 * when a toplevel window is on the screen.
1292 * To cancel the hold, call g_application_release().
1295 g_application_hold (GApplication
*application
)
1297 if (application
->priv
->inactivity_timeout_id
)
1299 g_source_remove (application
->priv
->inactivity_timeout_id
);
1300 application
->priv
->inactivity_timeout_id
= 0;
1303 application
->priv
->use_count
++;
1307 inactivity_timeout_expired (gpointer data
)
1309 GApplication
*application
= G_APPLICATION (data
);
1311 application
->priv
->inactivity_timeout_id
= 0;
1318 * g_application_release:
1319 * @application: a #GApplication
1321 * Decrease the use count of @application.
1323 * When the use count reaches zero, the application will stop running.
1325 * Never call this function except to cancel the effect of a previous
1326 * call to g_application_hold().
1329 g_application_release (GApplication
*application
)
1331 application
->priv
->use_count
--;
1333 if (application
->priv
->use_count
== 0 && application
->priv
->inactivity_timeout
)
1334 application
->priv
->inactivity_timeout_id
= g_timeout_add (application
->priv
->inactivity_timeout
,
1335 inactivity_timeout_expired
, application
);
1338 /* Activate, Open {{{1 */
1340 * g_application_activate:
1341 * @application: a #GApplication
1343 * Activates the application.
1345 * In essence, this results in the #GApplication::activate() signal being
1346 * emitted in the primary instance.
1348 * The application must be registered before calling this function.
1353 g_application_activate (GApplication
*application
)
1355 g_return_if_fail (G_IS_APPLICATION (application
));
1356 g_return_if_fail (application
->priv
->is_registered
);
1358 if (application
->priv
->is_remote
)
1359 g_application_impl_activate (application
->priv
->impl
,
1360 get_platform_data (application
));
1363 g_signal_emit (application
, g_application_signals
[SIGNAL_ACTIVATE
], 0);
1367 * g_application_open:
1368 * @application: a #GApplication
1369 * @files: (array length=n_files): an array of #GFiles to open
1370 * @n_files: the length of the @files array
1371 * @hint: a hint (or ""), but never %NULL
1373 * Opens the given files.
1375 * In essence, this results in the #GApplication::open signal being emitted
1376 * in the primary instance.
1378 * @n_files must be greater than zero.
1380 * @hint is simply passed through to the ::open signal. It is
1381 * intended to be used by applications that have multiple modes for
1382 * opening files (eg: "view" vs "edit", etc). Unless you have a need
1383 * for this functionality, you should use "".
1385 * The application must be registered before calling this function
1386 * and it must have the %G_APPLICATION_HANDLES_OPEN flag set.
1391 g_application_open (GApplication
*application
,
1396 g_return_if_fail (G_IS_APPLICATION (application
));
1397 g_return_if_fail (application
->priv
->flags
&
1398 G_APPLICATION_HANDLES_OPEN
);
1399 g_return_if_fail (application
->priv
->is_registered
);
1401 if (application
->priv
->is_remote
)
1402 g_application_impl_open (application
->priv
->impl
,
1403 files
, n_files
, hint
,
1404 get_platform_data (application
));
1407 g_signal_emit (application
, g_application_signals
[SIGNAL_OPEN
],
1408 0, files
, n_files
, hint
);
1413 * g_application_run:
1414 * @application: a #GApplication
1415 * @argc: the argc from main() (or 0 if @argv is %NULL)
1416 * @argv: (array length=argc) (allow-none): the argv from main(), or %NULL
1418 * Runs the application.
1420 * This function is intended to be run from main() and its return value
1421 * is intended to be returned by main(). Although you are expected to pass
1422 * the @argc, @argv parameters from main() to this function, it is possible
1423 * to pass %NULL if @argv is not available or commandline handling is not
1426 * First, the local_command_line() virtual function is invoked.
1427 * This function always runs on the local instance. It gets passed a pointer
1428 * to a %NULL-terminated copy of @argv and is expected to remove the arguments
1429 * that it handled (shifting up remaining arguments). See
1430 * <xref linkend="gapplication-example-cmdline2"/> for an example of
1431 * parsing @argv manually. Alternatively, you may use the #GOptionContext API,
1432 * after setting <literal>argc = g_strv_length (argv);</literal>.
1434 * The last argument to local_command_line() is a pointer to the @status
1435 * variable which can used to set the exit status that is returned from
1436 * g_application_run().
1438 * If local_command_line() returns %TRUE, the command line is expected
1439 * to be completely handled, including possibly registering as the primary
1440 * instance, calling g_application_activate() or g_application_open(), etc.
1442 * If local_command_line() returns %FALSE then the application is registered
1443 * and the #GApplication::command-line signal is emitted in the primary
1444 * instance (which may or may not be this instance). The signal handler
1445 * gets passed a #GApplicationCommandline object that (among other things)
1446 * contains the remaining commandline arguments that have not been handled
1447 * by local_command_line().
1449 * If the application has the %G_APPLICATION_HANDLES_COMMAND_LINE
1450 * flag set then the default implementation of local_command_line()
1451 * always returns %FALSE immediately, resulting in the commandline
1452 * always being handled in the primary instance.
1454 * Otherwise, the default implementation of local_command_line() tries
1455 * to do a couple of things that are probably reasonable for most
1456 * applications. First, g_application_register() is called to attempt
1457 * to register the application. If that works, then the command line
1458 * arguments are inspected. If no commandline arguments are given, then
1459 * g_application_activate() is called. If commandline arguments are
1460 * given and the %G_APPLICATION_HANDLES_OPEN flag is set then they
1461 * are assumed to be filenames and g_application_open() is called.
1463 * If you need to handle commandline arguments that are not filenames,
1464 * and you don't mind commandline handling to happen in the primary
1465 * instance, you should set %G_APPLICATION_HANDLED_COMMAND_LINE and
1466 * process the commandline arguments in your #GApplication::command-line
1467 * signal handler, either manually or using the #GOptionContext API.
1469 * If you are interested in doing more complicated local handling of the
1470 * commandline then you should implement your own #GApplication subclass
1471 * and override local_command_line(). In this case, you most likely want
1472 * to return %TRUE from your local_command_line() implementation to
1473 * suppress the default handling. See
1474 * <xref linkend="gapplication-example-cmdline2"/> for an example.
1476 * If, after the above is done, the use count of the application is zero
1477 * then the exit status is returned immediately. If the use count is
1478 * non-zero then the default main context is iterated until the use count
1479 * falls to zero, at which point 0 is returned.
1481 * If the %G_APPLICATION_IS_SERVICE flag is set, then the exiting at
1482 * use count of zero is delayed for a while (ie: the instance stays
1483 * around to provide its <emphasis>service</emphasis> to others).
1485 * Returns: the exit status
1490 g_application_run (GApplication
*application
,
1498 g_return_val_if_fail (G_IS_APPLICATION (application
), 1);
1499 g_return_val_if_fail (argc
== 0 || argv
!= NULL
, 1);
1501 arguments
= g_new (gchar
*, argc
+ 1);
1502 for (i
= 0; i
< argc
; i
++)
1503 arguments
[i
] = g_strdup (argv
[i
]);
1504 arguments
[i
] = NULL
;
1506 if (g_get_prgname () == NULL
&& argc
> 0)
1510 prgname
= g_path_get_basename (argv
[0]);
1511 g_set_prgname (prgname
);
1515 if (!G_APPLICATION_GET_CLASS (application
)
1516 ->local_command_line (application
, &arguments
, &status
))
1518 GError
*error
= NULL
;
1520 if (!g_application_register (application
, NULL
, &error
))
1522 g_printerr ("%s", error
->message
);
1523 g_error_free (error
);
1527 if (application
->priv
->is_remote
)
1529 GVariant
*platform_data
;
1531 platform_data
= get_platform_data (application
);
1532 status
= g_application_impl_command_line (application
->priv
->impl
,
1533 arguments
, platform_data
);
1537 GApplicationCommandLine
*cmdline
;
1540 v
= g_variant_new_bytestring_array ((const gchar
**) arguments
, -1);
1541 cmdline
= g_object_new (G_TYPE_APPLICATION_COMMAND_LINE
,
1542 "arguments", v
, NULL
);
1543 g_signal_emit (application
,
1544 g_application_signals
[SIGNAL_COMMAND_LINE
],
1545 0, cmdline
, &status
);
1546 g_object_unref (cmdline
);
1550 g_strfreev (arguments
);
1552 if (application
->priv
->flags
& G_APPLICATION_IS_SERVICE
&&
1553 application
->priv
->is_registered
&&
1554 !application
->priv
->use_count
&&
1555 !application
->priv
->inactivity_timeout_id
)
1557 application
->priv
->inactivity_timeout_id
=
1558 g_timeout_add (10000, inactivity_timeout_expired
, application
);
1561 while (application
->priv
->use_count
|| application
->priv
->inactivity_timeout_id
)
1563 g_main_context_iteration (NULL
, TRUE
);
1567 if (!application
->priv
->is_remote
)
1569 g_signal_emit (application
, g_application_signals
[SIGNAL_SHUTDOWN
], 0);
1571 if (!application
->priv
->did_shutdown
)
1572 g_critical ("GApplication subclass '%s' failed to chain up on"
1573 " ::shutdown (from end of override function)",
1574 G_OBJECT_TYPE_NAME (application
));
1577 if (application
->priv
->impl
)
1578 g_application_impl_flush (application
->priv
->impl
);
1586 g_application_list_actions (GActionGroup
*action_group
)
1588 GApplication
*application
= G_APPLICATION (action_group
);
1590 g_return_val_if_fail (application
->priv
->is_registered
, NULL
);
1592 if (application
->priv
->remote_actions
!= NULL
)
1593 return g_action_group_list_actions (application
->priv
->remote_actions
);
1595 else if (application
->priv
->actions
!= NULL
)
1596 return g_action_group_list_actions (application
->priv
->actions
);
1599 /* empty string array */
1600 return g_new0 (gchar
*, 1);
1604 g_application_query_action (GActionGroup
*group
,
1605 const gchar
*action_name
,
1607 const GVariantType
**parameter_type
,
1608 const GVariantType
**state_type
,
1609 GVariant
**state_hint
,
1612 GApplication
*application
= G_APPLICATION (group
);
1614 g_return_val_if_fail (application
->priv
->is_registered
, FALSE
);
1616 if (application
->priv
->remote_actions
!= NULL
)
1617 return g_action_group_query_action (application
->priv
->remote_actions
,
1625 if (application
->priv
->actions
!= NULL
)
1626 return g_action_group_query_action (application
->priv
->actions
,
1638 g_application_change_action_state (GActionGroup
*action_group
,
1639 const gchar
*action_name
,
1642 GApplication
*application
= G_APPLICATION (action_group
);
1644 g_return_if_fail (application
->priv
->is_remote
||
1645 application
->priv
->actions
!= NULL
);
1646 g_return_if_fail (application
->priv
->is_registered
);
1648 if (application
->priv
->remote_actions
)
1649 return g_action_group_change_action_state (application
->priv
->remote_actions
,
1650 action_name
, value
);
1653 g_action_group_change_action_state (application
->priv
->actions
,
1654 action_name
, value
);
1658 g_application_activate_action (GActionGroup
*action_group
,
1659 const gchar
*action_name
,
1660 GVariant
*parameter
)
1662 GApplication
*application
= G_APPLICATION (action_group
);
1664 g_return_if_fail (application
->priv
->is_remote
||
1665 application
->priv
->actions
!= NULL
);
1666 g_return_if_fail (application
->priv
->is_registered
);
1668 if (application
->priv
->remote_actions
)
1669 return g_action_group_activate_action (application
->priv
->remote_actions
,
1670 action_name
, parameter
);
1673 g_action_group_activate_action (application
->priv
->actions
,
1674 action_name
, parameter
);
1678 g_application_lookup_action (GActionMap
*action_map
,
1679 const gchar
*action_name
)
1681 GApplication
*application
= G_APPLICATION (action_map
);
1683 g_return_val_if_fail (G_IS_SIMPLE_ACTION_GROUP (application
->priv
->actions
), NULL
);
1685 return g_simple_action_group_lookup (G_SIMPLE_ACTION_GROUP (application
->priv
->actions
), action_name
);
1689 g_application_add_action (GActionMap
*action_map
,
1692 GApplication
*application
= G_APPLICATION (action_map
);
1694 g_return_if_fail (G_IS_SIMPLE_ACTION_GROUP (application
->priv
->actions
));
1696 g_simple_action_group_insert (G_SIMPLE_ACTION_GROUP (application
->priv
->actions
), action
);
1700 g_application_remove_action (GActionMap
*action_map
,
1701 const gchar
*action_name
)
1703 GApplication
*application
= G_APPLICATION (action_map
);
1705 g_return_if_fail (G_IS_SIMPLE_ACTION_GROUP (application
->priv
->actions
));
1707 g_simple_action_group_remove (G_SIMPLE_ACTION_GROUP (application
->priv
->actions
), action_name
);
1711 g_application_action_group_iface_init (GActionGroupInterface
*iface
)
1713 iface
->list_actions
= g_application_list_actions
;
1714 iface
->query_action
= g_application_query_action
;
1715 iface
->change_action_state
= g_application_change_action_state
;
1716 iface
->activate_action
= g_application_activate_action
;
1720 g_application_action_map_iface_init (GActionMapInterface
*iface
)
1722 iface
->lookup_action
= g_application_lookup_action
;
1723 iface
->add_action
= g_application_add_action
;
1724 iface
->remove_action
= g_application_remove_action
;
1727 /* Default Application {{{1 */
1729 static GApplication
*default_app
;
1732 * g_application_get_default:
1733 * @returns: (transfer none): the default application for this process, or %NULL
1735 * Returns the default #GApplication instance for this process.
1737 * Normally there is only one #GApplication per process and it becomes
1738 * the default when it is created. You can exercise more control over
1739 * this by using g_application_set_default().
1741 * If there is no default application then %NULL is returned.
1746 g_application_get_default (void)
1752 * g_application_set_default:
1753 * @application: the application to set as default, or %NULL
1755 * Sets or unsets the default application for the process, as returned
1756 * by g_application_get_default().
1758 * This function does not take its own reference on @application. If
1759 * @application is destroyed then the default application will revert
1765 g_application_set_default (GApplication
*application
)
1767 default_app
= application
;
1771 /* vim:set foldmethod=marker: */