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glib/gio/gapplication.c
Ryan Lortie 543bbd8752 GApplication: don't shutdown() on failure to start 
If we fail to start (and don't register() or call startup()) then also
don't call shutdown().  This happens in the case of failing to parse
commandline arguments, for example.
2012-11-24 13:20:29 -05:00

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/*
* Copyright © 2010 Codethink Limited
*
* This program is free software: you can redistribute it and/or modify
* it under the terms of the GNU Lesser General Public License as published
* by the Free Software Foundation; either version 2 of the licence or (at
* your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General
* Public License along with this library; if not, write to the
* Free Software Foundation, Inc., 59 Temple Place, Suite 330,
* Boston, MA 02111-1307, USA.
*
* Authors: Ryan Lortie <desrt@desrt.ca>
*/
/* Prologue {{{1 */
#include "config.h"
#include "gapplication.h"
#include "gapplicationcommandline.h"
#include "gsimpleactiongroup.h"
#include "gremoteactiongroup.h"
#include "gapplicationimpl.h"
#include "gactiongroup.h"
#include "gactionmap.h"
#include "gmenumodel.h"
#include "gsettings.h"
#include "gioenumtypes.h"
#include "gioenums.h"
#include "gfile.h"
#include "glibintl.h"
#include <string.h>
/**
* SECTION:gapplication
* @title: GApplication
* @short_description: Core application class
*
* A #GApplication is the foundation of an application. It wraps some
* low-level platform-specific services and is intended to act as the
* foundation for higher-level application classes such as
* #GtkApplication or #MxApplication. In general, you should not use
* this class outside of a higher level framework.
*
* GApplication provides convenient life cycle management by maintaining
* a <firstterm>use count</firstterm> for the primary application instance.
* The use count can be changed using g_application_hold() and
* g_application_release(). If it drops to zero, the application exits.
* Higher-level classes such as #GtkApplication employ the use count to
* ensure that the application stays alive as long as it has any opened
* windows.
*
* Another feature that GApplication (optionally) provides is process
* uniqueness. Applications can make use of this functionality by
* providing a unique application ID. If given, only one application
* with this ID can be running at a time per session. The session
* concept is platform-dependent, but corresponds roughly to a graphical
* desktop login. When your application is launched again, its
* arguments are passed through platform communication to the already
* running program. The already running instance of the program is
* called the <firstterm>primary instance</firstterm>; for non-unique
* applications this is the always the current instance.
* On Linux, the D-Bus session bus is used for communication.
*
* The use of #GApplication differs from some other commonly-used
* uniqueness libraries (such as libunique) in important ways. The
* application is not expected to manually register itself and check if
* it is the primary instance. Instead, the <code>main()</code>
* function of a #GApplication should do very little more than
* instantiating the application instance, possibly connecting signal
* handlers, then calling g_application_run(). All checks for
* uniqueness are done internally. If the application is the primary
* instance then the startup signal is emitted and the mainloop runs.
* If the application is not the primary instance then a signal is sent
* to the primary instance and g_application_run() promptly returns.
* See the code examples below.
*
* If used, the expected form of an application identifier is very close
* to that of of a
* <ulink url="http://dbus.freedesktop.org/doc/dbus-specification.html#message-protocol-names-interface">DBus bus name</ulink>.
* Examples include: "com.example.MyApp", "org.example.internal-apps.Calculator".
* For details on valid application identifiers, see g_application_id_is_valid().
*
* On Linux, the application identifier is claimed as a well-known bus name
* on the user's session bus. This means that the uniqueness of your
* application is scoped to the current session. It also means that your
* application may provide additional services (through registration of other
* object paths) at that bus name. The registration of these object paths
* should be done with the shared GDBus session bus. Note that due to the
* internal architecture of GDBus, method calls can be dispatched at any time
* (even if a main loop is not running). For this reason, you must ensure that
* any object paths that you wish to register are registered before #GApplication
* attempts to acquire the bus name of your application (which happens in
* g_application_register()). Unfortunately, this means that you cannot use
* g_application_get_is_remote() to decide if you want to register object paths.
*
* GApplication also implements the #GActionGroup and #GActionMap
* interfaces and lets you easily export actions by adding them with
* g_action_map_add_action(). When invoking an action by calling
* g_action_group_activate_action() on the application, it is always
* invoked in the primary instance. The actions are also exported on
* the session bus, and GIO provides the #GDBusActionGroup wrapper to
* conveniently access them remotely. GIO provides a #GDBusMenuModel wrapper
* for remote access to exported #GMenuModels.
*
* There is a number of different entry points into a GApplication:
* <itemizedlist>
* <listitem>via 'Activate' (i.e. just starting the application)</listitem>
* <listitem>via 'Open' (i.e. opening some files)</listitem>
* <listitem>by handling a command-line</listitem>
* <listitem>via activating an action</listitem>
* </itemizedlist>
* The #GApplication::startup signal lets you handle the application
* initialization for all of these in a single place.
*
* Regardless of which of these entry points is used to start the application,
* GApplication passes some <firstterm id="platform-data">platform
* data</firstterm> from the launching instance to the primary instance,
* in the form of a #GVariant dictionary mapping strings to variants.
* To use platform data, override the @before_emit or @after_emit virtual
* functions in your #GApplication subclass. When dealing with
* #GApplicationCommandLine objects, the platform data is directly
* available via g_application_command_line_get_cwd(),
* g_application_command_line_get_environ() and
* g_application_command_line_get_platform_data().
*
* As the name indicates, the platform data may vary depending on the
* operating system, but it always includes the current directory (key
* "cwd"), and optionally the environment (ie the set of environment
* variables and their values) of the calling process (key "environ").
* The environment is only added to the platform data if the
* %G_APPLICATION_SEND_ENVIRONMENT flag is set. #GApplication subclasses
* can add their own platform data by overriding the @add_platform_data
* virtual function. For instance, #GtkApplication adds startup notification
* data in this way.
*
* To parse commandline arguments you may handle the
* #GApplication::command-line signal or override the local_command_line()
* vfunc, to parse them in either the primary instance or the local instance,
* respectively.
*
* <example id="gapplication-example-open"><title>Opening files with a GApplication</title>
* <programlisting>
* <xi:include xmlns:xi="http://www.w3.org/2001/XInclude" parse="text" href="../../../../gio/tests/gapplication-example-open.c">
* <xi:fallback>FIXME: MISSING XINCLUDE CONTENT</xi:fallback>
* </xi:include>
* </programlisting>
* </example>
*
* <example id="gapplication-example-actions"><title>A GApplication with actions</title>
* <programlisting>
* <xi:include xmlns:xi="http://www.w3.org/2001/XInclude" parse="text" href="../../../../gio/tests/gapplication-example-actions.c">
* <xi:fallback>FIXME: MISSING XINCLUDE CONTENT</xi:fallback>
* </xi:include>
* </programlisting>
* </example>
*
* <example id="gapplication-example-menu"><title>A GApplication with menus</title>
* <programlisting>
* <xi:include xmlns:xi="http://www.w3.org/2001/XInclude" parse="text" href="../../../../gio/tests/gapplication-example-menu.c">
* <xi:fallback>FIXME: MISSING XINCLUDE CONTENT</xi:fallback>
* </xi:include>
* </programlisting>
* </example>
*
* <example id="gapplication-example-dbushooks"><title>Using extra D-Bus hooks with a GApplication</title>
* <programlisting>
* <xi:include xmlns:xi="http://www.w3.org/2001/XInclude" parse="text" href="../../../../gio/tests/gapplication-example-dbushooks.c">
* <xi:fallback>FIXME: MISSING XINCLUDE CONTENT</xi:fallback>
* </xi:include>
* </programlisting>
* </example>
*/
/**
* GApplicationClass:
* @startup: invoked on the primary instance immediately after registration
* @shutdown: invoked only on the registered primary instance immediately
* after the main loop terminates
* @activate: invoked on the primary instance when an activation occurs
* @open: invoked on the primary instance when there are files to open
* @command_line: invoked on the primary instance when a command-line is
* not handled locally
* @local_command_line: invoked (locally) when the process has been invoked
* via commandline execution (as opposed to, say, D-Bus activation - which
* is not currently supported by GApplication). The virtual function has
* the chance to inspect (and possibly replace) the list of command line
* arguments. See g_application_run() for more information.
* @before_emit: invoked on the primary instance before 'activate', 'open',
* 'command-line' or any action invocation, gets the 'platform data' from
* the calling instance
* @after_emit: invoked on the primary instance after 'activate', 'open',
* 'command-line' or any action invocation, gets the 'platform data' from
* the calling instance
* @add_platform_data: invoked (locally) to add 'platform data' to be sent to
* the primary instance when activating, opening or invoking actions
* @quit_mainloop: Used to be invoked on the primary instance when the use
* count of the application drops to zero (and after any inactivity
* timeout, if requested). Not used anymore since 2.32
* @run_mainloop: Used to be invoked on the primary instance from
* g_application_run() if the use-count is non-zero. Since 2.32,
* GApplication is iterating the main context directly and is not
* using @run_mainloop anymore
* @dbus_register: invoked locally during registration, if the application is
* using its D-Bus backend. You can use this to export extra objects on the
* bus, that need to exist before the application tries to own the bus name.
* The function is passed the #GDBusConnection to to session bus, and the
* object path that #GApplication will use to export is D-Bus API.
* If this function returns %TRUE, registration will proceed; otherwise
* registration will abort. Since: 2.34
* @dbus_unregister: invoked locally during unregistration, if the application
* is using its D-Bus backend. Use this to undo anything done by the
* @dbus_register vfunc. Since: 2.34
*
* Virtual function table for #GApplication.
*
* Since: 2.28
*/
struct _GApplicationPrivate
{
GApplicationFlags flags;
gchar *id;
GActionGroup *actions;
GMenuModel *app_menu;
GMenuModel *menubar;
guint inactivity_timeout_id;
guint inactivity_timeout;
guint use_count;
guint is_registered : 1;
guint is_remote : 1;
guint did_startup : 1;
guint did_shutdown : 1;
guint must_quit_now : 1;
GRemoteActionGroup *remote_actions;
GApplicationImpl *impl;
};
enum
{
PROP_NONE,
PROP_APPLICATION_ID,
PROP_FLAGS,
PROP_IS_REGISTERED,
PROP_IS_REMOTE,
PROP_INACTIVITY_TIMEOUT,
PROP_ACTION_GROUP
};
enum
{
SIGNAL_STARTUP,
SIGNAL_SHUTDOWN,
SIGNAL_ACTIVATE,
SIGNAL_OPEN,
SIGNAL_ACTION,
SIGNAL_COMMAND_LINE,
NR_SIGNALS
};
static guint g_application_signals[NR_SIGNALS];
static void g_application_action_group_iface_init (GActionGroupInterface *);
static void g_application_action_map_iface_init (GActionMapInterface *);
G_DEFINE_TYPE_WITH_CODE (GApplication, g_application, G_TYPE_OBJECT,
G_IMPLEMENT_INTERFACE (G_TYPE_ACTION_GROUP, g_application_action_group_iface_init)
G_IMPLEMENT_INTERFACE (G_TYPE_ACTION_MAP, g_application_action_map_iface_init))
/* GApplicationExportedActions {{{1 */
/* We create a subclass of GSimpleActionGroup that implements
* GRemoteActionGroup and deals with the platform data using
* GApplication's before/after_emit vfuncs. This is the action group we
* will be exporting.
*
* We could implement GRemoteActionGroup on GApplication directly, but
* this would be potentially extremely confusing to have exposed as part
* of the public API of GApplication. We certainly don't want anyone in
* the same process to be calling these APIs...
*/
typedef GSimpleActionGroupClass GApplicationExportedActionsClass;
typedef struct
{
GSimpleActionGroup parent_instance;
GApplication *application;
} GApplicationExportedActions;
static GType g_application_exported_actions_get_type (void);
static void g_application_exported_actions_iface_init (GRemoteActionGroupInterface *iface);
G_DEFINE_TYPE_WITH_CODE (GApplicationExportedActions, g_application_exported_actions, G_TYPE_SIMPLE_ACTION_GROUP,
G_IMPLEMENT_INTERFACE (G_TYPE_REMOTE_ACTION_GROUP, g_application_exported_actions_iface_init))
static void
g_application_exported_actions_activate_action_full (GRemoteActionGroup *remote,
const gchar *action_name,
GVariant *parameter,
GVariant *platform_data)
{
GApplicationExportedActions *exported = (GApplicationExportedActions *) remote;
G_APPLICATION_GET_CLASS (exported->application)
->before_emit (exported->application, platform_data);
g_action_group_activate_action (G_ACTION_GROUP (exported), action_name, parameter);
G_APPLICATION_GET_CLASS (exported->application)
->after_emit (exported->application, platform_data);
}
static void
g_application_exported_actions_change_action_state_full (GRemoteActionGroup *remote,
const gchar *action_name,
GVariant *value,
GVariant *platform_data)
{
GApplicationExportedActions *exported = (GApplicationExportedActions *) remote;
G_APPLICATION_GET_CLASS (exported->application)
->before_emit (exported->application, platform_data);
g_action_group_change_action_state (G_ACTION_GROUP (exported), action_name, value);
G_APPLICATION_GET_CLASS (exported->application)
->after_emit (exported->application, platform_data);
}
static void
g_application_exported_actions_init (GApplicationExportedActions *actions)
{
}
static void
g_application_exported_actions_iface_init (GRemoteActionGroupInterface *iface)
{
iface->activate_action_full = g_application_exported_actions_activate_action_full;
iface->change_action_state_full = g_application_exported_actions_change_action_state_full;
}
static void
g_application_exported_actions_class_init (GApplicationExportedActionsClass *class)
{
}
static GActionGroup *
g_application_exported_actions_new (GApplication *application)
{
GApplicationExportedActions *actions;
actions = g_object_new (g_application_exported_actions_get_type (), NULL);
actions->application = application;
return G_ACTION_GROUP (actions);
}
/* vfunc defaults {{{1 */
static void
g_application_real_before_emit (GApplication *application,
GVariant *platform_data)
{
}
static void
g_application_real_after_emit (GApplication *application,
GVariant *platform_data)
{
}
static void
g_application_real_startup (GApplication *application)
{
application->priv->did_startup = TRUE;
}
static void
g_application_real_shutdown (GApplication *application)
{
application->priv->did_shutdown = TRUE;
}
static void
g_application_real_activate (GApplication *application)
{
if (!g_signal_has_handler_pending (application,
g_application_signals[SIGNAL_ACTIVATE],
0, TRUE) &&
G_APPLICATION_GET_CLASS (application)->activate == g_application_real_activate)
{
static gboolean warned;
if (warned)
return;
g_warning ("Your application does not implement "
"g_application_activate() and has no handlers connected "
"to the 'activate' signal. It should do one of these.");
warned = TRUE;
}
}
static void
g_application_real_open (GApplication *application,
GFile **files,
gint n_files,
const gchar *hint)
{
if (!g_signal_has_handler_pending (application,
g_application_signals[SIGNAL_OPEN],
0, TRUE) &&
G_APPLICATION_GET_CLASS (application)->open == g_application_real_open)
{
static gboolean warned;
if (warned)
return;
g_warning ("Your application claims to support opening files "
"but does not implement g_application_open() and has no "
"handlers connected to the 'open' signal.");
warned = TRUE;
}
}
static int
g_application_real_command_line (GApplication *application,
GApplicationCommandLine *cmdline)
{
if (!g_signal_has_handler_pending (application,
g_application_signals[SIGNAL_COMMAND_LINE],
0, TRUE) &&
G_APPLICATION_GET_CLASS (application)->command_line == g_application_real_command_line)
{
static gboolean warned;
if (warned)
return 1;
g_warning ("Your application claims to support custom command line "
"handling but does not implement g_application_command_line() "
"and has no handlers connected to the 'command-line' signal.");
warned = TRUE;
}
return 1;
}
static gboolean
g_application_real_local_command_line (GApplication *application,
gchar ***arguments,
int *exit_status)
{
if (application->priv->flags & G_APPLICATION_HANDLES_COMMAND_LINE)
return FALSE;
else
{
GError *error = NULL;
gint n_args;
if (!g_application_register (application, NULL, &error))
{
g_critical ("%s", error->message);
g_error_free (error);
*exit_status = 1;
return TRUE;
}
n_args = g_strv_length (*arguments);
if (application->priv->flags & G_APPLICATION_IS_SERVICE)
{
if ((*exit_status = n_args > 1))
{
g_printerr ("GApplication service mode takes no arguments.\n");
application->priv->flags &= ~G_APPLICATION_IS_SERVICE;
}
return TRUE;
}
if (n_args <= 1)
{
g_application_activate (application);
*exit_status = 0;
}
else
{
if (~application->priv->flags & G_APPLICATION_HANDLES_OPEN)
{
g_critical ("This application can not open files.");
*exit_status = 1;
}
else
{
GFile **files;
gint n_files;
gint i;
n_files = n_args - 1;
files = g_new (GFile *, n_files);
for (i = 0; i < n_files; i++)
files[i] = g_file_new_for_commandline_arg ((*arguments)[i + 1]);
g_application_open (application, files, n_files, "");
for (i = 0; i < n_files; i++)
g_object_unref (files[i]);
g_free (files);
*exit_status = 0;
}
}
return TRUE;
}
}
static void
g_application_real_add_platform_data (GApplication *application,
GVariantBuilder *builder)
{
}
static gboolean
g_application_real_dbus_register (GApplication *application,
GDBusConnection *connection,
const gchar *object_path,
GError **error)
{
return TRUE;
}
static void
g_application_real_dbus_unregister (GApplication *application,
GDBusConnection *connection,
const gchar *object_path)
{
}
/* GObject implementation stuff {{{1 */
static void
g_application_set_property (GObject *object,
guint prop_id,
const GValue *value,
GParamSpec *pspec)
{
GApplication *application = G_APPLICATION (object);
switch (prop_id)
{
case PROP_APPLICATION_ID:
g_application_set_application_id (application,
g_value_get_string (value));
break;
case PROP_FLAGS:
g_application_set_flags (application, g_value_get_flags (value));
break;
case PROP_INACTIVITY_TIMEOUT:
g_application_set_inactivity_timeout (application,
g_value_get_uint (value));
break;
case PROP_ACTION_GROUP:
g_clear_object (&application->priv->actions);
application->priv->actions = g_value_dup_object (value);
break;
default:
g_assert_not_reached ();
}
}
/**
* g_application_set_action_group:
* @application: a #GApplication
* @action_group: (allow-none): a #GActionGroup, or %NULL
*
* This used to be how actions were associated with a #GApplication.
* Now there is #GActionMap for that.
*
* Since: 2.28
*
* Deprecated:2.32:Use the #GActionMap interface instead. Never ever
* mix use of this API with use of #GActionMap on the same @application
* or things will go very badly wrong. This function is known to
* introduce buggy behaviour (ie: signals not emitted on changes to the
* action group), so you should really use #GActionMap instead.
**/
void
g_application_set_action_group (GApplication *application,
GActionGroup *action_group)
{
g_return_if_fail (G_IS_APPLICATION (application));
g_return_if_fail (!application->priv->is_registered);
if (application->priv->actions != NULL)
g_object_unref (application->priv->actions);
application->priv->actions = action_group;
if (application->priv->actions != NULL)
g_object_ref (application->priv->actions);
}
static void
g_application_get_property (GObject *object,
guint prop_id,
GValue *value,
GParamSpec *pspec)
{
GApplication *application = G_APPLICATION (object);
switch (prop_id)
{
case PROP_APPLICATION_ID:
g_value_set_string (value,
g_application_get_application_id (application));
break;
case PROP_FLAGS:
g_value_set_flags (value,
g_application_get_flags (application));
break;
case PROP_IS_REGISTERED:
g_value_set_boolean (value,
g_application_get_is_registered (application));
break;
case PROP_IS_REMOTE:
g_value_set_boolean (value,
g_application_get_is_remote (application));
break;
case PROP_INACTIVITY_TIMEOUT:
g_value_set_uint (value,
g_application_get_inactivity_timeout (application));
break;
default:
g_assert_not_reached ();
}
}
static void
g_application_constructed (GObject *object)
{
GApplication *application = G_APPLICATION (object);
if (g_application_get_default () == NULL)
g_application_set_default (application);
}
static void
g_application_finalize (GObject *object)
{
GApplication *application = G_APPLICATION (object);
if (application->priv->impl)
g_application_impl_destroy (application->priv->impl);
g_free (application->priv->id);
if (g_application_get_default () == application)
g_application_set_default (NULL);
if (application->priv->actions)
g_object_unref (application->priv->actions);
G_OBJECT_CLASS (g_application_parent_class)
->finalize (object);
}
static void
g_application_init (GApplication *application)
{
application->priv = G_TYPE_INSTANCE_GET_PRIVATE (application,
G_TYPE_APPLICATION,
GApplicationPrivate);
application->priv->actions = g_application_exported_actions_new (application);
/* application->priv->actions is the one and only ref on the group, so when
* we dispose, the action group will die, disconnecting all signals.
*/
g_signal_connect_swapped (application->priv->actions, "action-added",
G_CALLBACK (g_action_group_action_added), application);
g_signal_connect_swapped (application->priv->actions, "action-enabled-changed",
G_CALLBACK (g_action_group_action_enabled_changed), application);
g_signal_connect_swapped (application->priv->actions, "action-state-changed",
G_CALLBACK (g_action_group_action_state_changed), application);
g_signal_connect_swapped (application->priv->actions, "action-removed",
G_CALLBACK (g_action_group_action_removed), application);
}
static void
g_application_class_init (GApplicationClass *class)
{
GObjectClass *object_class = G_OBJECT_CLASS (class);
object_class->constructed = g_application_constructed;
object_class->finalize = g_application_finalize;
object_class->get_property = g_application_get_property;
object_class->set_property = g_application_set_property;
class->before_emit = g_application_real_before_emit;
class->after_emit = g_application_real_after_emit;
class->startup = g_application_real_startup;
class->shutdown = g_application_real_shutdown;
class->activate = g_application_real_activate;
class->open = g_application_real_open;
class->command_line = g_application_real_command_line;
class->local_command_line = g_application_real_local_command_line;
class->add_platform_data = g_application_real_add_platform_data;
class->dbus_register = g_application_real_dbus_register;
class->dbus_unregister = g_application_real_dbus_unregister;
g_object_class_install_property (object_class, PROP_APPLICATION_ID,
g_param_spec_string ("application-id",
P_("Application identifier"),
P_("The unique identifier for the application"),
NULL, G_PARAM_READWRITE | G_PARAM_CONSTRUCT |
G_PARAM_STATIC_STRINGS));
g_object_class_install_property (object_class, PROP_FLAGS,
g_param_spec_flags ("flags",
P_("Application flags"),
P_("Flags specifying the behaviour of the application"),
G_TYPE_APPLICATION_FLAGS, G_APPLICATION_FLAGS_NONE,
G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS));
g_object_class_install_property (object_class, PROP_IS_REGISTERED,
g_param_spec_boolean ("is-registered",
P_("Is registered"),
P_("If g_application_register() has been called"),
FALSE, G_PARAM_READABLE | G_PARAM_STATIC_STRINGS));
g_object_class_install_property (object_class, PROP_IS_REMOTE,
g_param_spec_boolean ("is-remote",
P_("Is remote"),
P_("If this application instance is remote"),
FALSE, G_PARAM_READABLE | G_PARAM_STATIC_STRINGS));
g_object_class_install_property (object_class, PROP_INACTIVITY_TIMEOUT,
g_param_spec_uint ("inactivity-timeout",
P_("Inactivity timeout"),
P_("Time (ms) to stay alive after becoming idle"),
0, G_MAXUINT, 0,
G_PARAM_READWRITE | G_PARAM_STATIC_STRINGS));
g_object_class_install_property (object_class, PROP_ACTION_GROUP,
g_param_spec_object ("action-group",
P_("Action group"),
P_("The group of actions that the application exports"),
G_TYPE_ACTION_GROUP,
G_PARAM_DEPRECATED | G_PARAM_WRITABLE | G_PARAM_STATIC_STRINGS));
/**
* GApplication::startup:
* @application: the application
*
* The ::startup signal is emitted on the primary instance immediately
* after registration. See g_application_register().
*/
g_application_signals[SIGNAL_STARTUP] =
g_signal_new ("startup", G_TYPE_APPLICATION, G_SIGNAL_RUN_FIRST,
G_STRUCT_OFFSET (GApplicationClass, startup),
NULL, NULL, g_cclosure_marshal_VOID__VOID, G_TYPE_NONE, 0);
/**
* GApplication::shutdown:
* @application: the application
*
* The ::shutdown signal is emitted only on the registered primary instance
* immediately after the main loop terminates.
*/
g_application_signals[SIGNAL_SHUTDOWN] =
g_signal_new ("shutdown", G_TYPE_APPLICATION, G_SIGNAL_RUN_LAST,
G_STRUCT_OFFSET (GApplicationClass, shutdown),
NULL, NULL, g_cclosure_marshal_VOID__VOID, G_TYPE_NONE, 0);
/**
* GApplication::activate:
* @application: the application
*
* The ::activate signal is emitted on the primary instance when an
* activation occurs. See g_application_activate().
*/
g_application_signals[SIGNAL_ACTIVATE] =
g_signal_new ("activate", G_TYPE_APPLICATION, G_SIGNAL_RUN_LAST,
G_STRUCT_OFFSET (GApplicationClass, activate),
NULL, NULL, g_cclosure_marshal_VOID__VOID, G_TYPE_NONE, 0);
/**
* GApplication::open:
* @application: the application
* @files: (array length=n_files) (element-type GFile): an array of #GFiles
* @n_files: the length of @files
* @hint: a hint provided by the calling instance
*
* The ::open signal is emitted on the primary instance when there are
* files to open. See g_application_open() for more information.
*/
g_application_signals[SIGNAL_OPEN] =
g_signal_new ("open", G_TYPE_APPLICATION, G_SIGNAL_RUN_LAST,
G_STRUCT_OFFSET (GApplicationClass, open),
NULL, NULL, NULL,
G_TYPE_NONE, 3, G_TYPE_POINTER, G_TYPE_INT, G_TYPE_STRING);
/**
* GApplication::command-line:
* @application: the application
* @command_line: a #GApplicationCommandLine representing the
* passed commandline
*
* The ::command-line signal is emitted on the primary instance when
* a commandline is not handled locally. See g_application_run() and
* the #GApplicationCommandLine documentation for more information.
*
* Returns: An integer that is set as the exit status for the calling
* process. See g_application_command_line_set_exit_status().
*/
g_application_signals[SIGNAL_COMMAND_LINE] =
g_signal_new ("command-line", G_TYPE_APPLICATION, G_SIGNAL_RUN_LAST,
G_STRUCT_OFFSET (GApplicationClass, command_line),
g_signal_accumulator_first_wins, NULL,
NULL,
G_TYPE_INT, 1, G_TYPE_APPLICATION_COMMAND_LINE);
g_type_class_add_private (class, sizeof (GApplicationPrivate));
}
static GVariant *
get_platform_data (GApplication *application)
{
GVariantBuilder *builder;
GVariant *result;
builder = g_variant_builder_new (G_VARIANT_TYPE ("a{sv}"));
{
gchar *cwd = g_get_current_dir ();
g_variant_builder_add (builder, "{sv}", "cwd",
g_variant_new_bytestring (cwd));
g_free (cwd);
}
if (application->priv->flags & G_APPLICATION_SEND_ENVIRONMENT)
{
GVariant *array;
gchar **envp;
envp = g_get_environ ();
array = g_variant_new_bytestring_array ((const gchar **) envp, -1);
g_strfreev (envp);
g_variant_builder_add (builder, "{sv}", "environ", array);
}
G_APPLICATION_GET_CLASS (application)->
add_platform_data (application, builder);
result = g_variant_builder_end (builder);
g_variant_builder_unref (builder);
return result;
}
/* Application ID validity {{{1 */
/**
* g_application_id_is_valid:
* @application_id: a potential application identifier
*
* Checks if @application_id is a valid application identifier.
*
* A valid ID is required for calls to g_application_new() and
* g_application_set_application_id().
*
* For convenience, the restrictions on application identifiers are
* reproduced here:
* <itemizedlist>
* <listitem>Application identifiers must contain only the ASCII characters "[A-Z][a-z][0-9]_-." and must not begin with a digit.</listitem>
* <listitem>Application identifiers must contain at least one '.' (period) character (and thus at least three elements).</listitem>
* <listitem>Application identifiers must not begin or end with a '.' (period) character.</listitem>
* <listitem>Application identifiers must not contain consecutive '.' (period) characters.</listitem>
* <listitem>Application identifiers must not exceed 255 characters.</listitem>
* </itemizedlist>
*
* Returns: %TRUE if @application_id is valid
**/
gboolean
g_application_id_is_valid (const gchar *application_id)
{
gsize len;
gboolean allow_dot;
gboolean has_dot;
len = strlen (application_id);
if (len > 255)
return FALSE;
if (!g_ascii_isalpha (application_id[0]))
return FALSE;
if (application_id[len-1] == '.')
return FALSE;
application_id++;
allow_dot = TRUE;
has_dot = FALSE;
for (; *application_id; application_id++)
{
if (g_ascii_isalnum (*application_id) ||
(*application_id == '-') ||
(*application_id == '_'))
{
allow_dot = TRUE;
}
else if (allow_dot && *application_id == '.')
{
has_dot = TRUE;
allow_dot = FALSE;
}
else
return FALSE;
}
if (!has_dot)
return FALSE;
return TRUE;
}
/* Public Constructor {{{1 */
/**
* g_application_new:
* @application_id: (allow-none): the application id
* @flags: the application flags
*
* Creates a new #GApplication instance.
*
* If non-%NULL, the application id must be valid. See
* g_application_id_is_valid().
*
* If no application ID is given then some features of #GApplication
* (most notably application uniqueness) will be disabled.
*
* Returns: a new #GApplication instance
**/
GApplication *
g_application_new (const gchar *application_id,
GApplicationFlags flags)
{
g_return_val_if_fail (application_id == NULL || g_application_id_is_valid (application_id), NULL);
return g_object_new (G_TYPE_APPLICATION,
"application-id", application_id,
"flags", flags,
NULL);
}
/* Simple get/set: application id, flags, inactivity timeout {{{1 */
/**
* g_application_get_application_id:
* @application: a #GApplication
*
* Gets the unique identifier for @application.
*
* Returns: the identifier for @application, owned by @application
*
* Since: 2.28
**/
const gchar *
g_application_get_application_id (GApplication *application)
{
g_return_val_if_fail (G_IS_APPLICATION (application), NULL);
return application->priv->id;
}
/**
* g_application_set_application_id:
* @application: a #GApplication
* @application_id: (allow-none): the identifier for @application
*
* Sets the unique identifier for @application.
*
* The application id can only be modified if @application has not yet
* been registered.
*
* If non-%NULL, the application id must be valid. See
* g_application_id_is_valid().
*
* Since: 2.28
**/
void
g_application_set_application_id (GApplication *application,
const gchar *application_id)
{
g_return_if_fail (G_IS_APPLICATION (application));
if (g_strcmp0 (application->priv->id, application_id) != 0)
{
g_return_if_fail (application_id == NULL || g_application_id_is_valid (application_id));
g_return_if_fail (!application->priv->is_registered);
g_free (application->priv->id);
application->priv->id = g_strdup (application_id);
g_object_notify (G_OBJECT (application), "application-id");
}
}
/**
* g_application_get_flags:
* @application: a #GApplication
*
* Gets the flags for @application.
*
* See #GApplicationFlags.
*
* Returns: the flags for @application
*
* Since: 2.28
**/
GApplicationFlags
g_application_get_flags (GApplication *application)
{
g_return_val_if_fail (G_IS_APPLICATION (application), 0);
return application->priv->flags;
}
/**
* g_application_set_flags:
* @application: a #GApplication
* @flags: the flags for @application
*
* Sets the flags for @application.
*
* The flags can only be modified if @application has not yet been
* registered.
*
* See #GApplicationFlags.
*
* Since: 2.28
**/
void
g_application_set_flags (GApplication *application,
GApplicationFlags flags)
{
g_return_if_fail (G_IS_APPLICATION (application));
if (application->priv->flags != flags)
{
g_return_if_fail (!application->priv->is_registered);
application->priv->flags = flags;
g_object_notify (G_OBJECT (application), "flags");
}
}
/**
* g_application_get_inactivity_timeout:
* @application: a #GApplication
*
* Gets the current inactivity timeout for the application.
*
* This is the amount of time (in milliseconds) after the last call to
* g_application_release() before the application stops running.
*
* Returns: the timeout, in milliseconds
*
* Since: 2.28
**/
guint
g_application_get_inactivity_timeout (GApplication *application)
{
g_return_val_if_fail (G_IS_APPLICATION (application), 0);
return application->priv->inactivity_timeout;
}
/**
* g_application_set_inactivity_timeout:
* @application: a #GApplication
* @inactivity_timeout: the timeout, in milliseconds
*
* Sets the current inactivity timeout for the application.
*
* This is the amount of time (in milliseconds) after the last call to
* g_application_release() before the application stops running.
*
* This call has no side effects of its own. The value set here is only
* used for next time g_application_release() drops the use count to
* zero. Any timeouts currently in progress are not impacted.
*
* Since: 2.28
**/
void
g_application_set_inactivity_timeout (GApplication *application,
guint inactivity_timeout)
{
g_return_if_fail (G_IS_APPLICATION (application));
if (application->priv->inactivity_timeout != inactivity_timeout)
{
application->priv->inactivity_timeout = inactivity_timeout;
g_object_notify (G_OBJECT (application), "inactivity-timeout");
}
}
/* Read-only property getters (is registered, is remote, dbus stuff) {{{1 */
/**
* g_application_get_is_registered:
* @application: a #GApplication
*
* Checks if @application is registered.
*
* An application is registered if g_application_register() has been
* successfully called.
*
* Returns: %TRUE if @application is registered
*
* Since: 2.28
**/
gboolean
g_application_get_is_registered (GApplication *application)
{
g_return_val_if_fail (G_IS_APPLICATION (application), FALSE);
return application->priv->is_registered;
}
/**
* g_application_get_is_remote:
* @application: a #GApplication
*
* Checks if @application is remote.
*
* If @application is remote then it means that another instance of
* application already exists (the 'primary' instance). Calls to
* perform actions on @application will result in the actions being
* performed by the primary instance.
*
* The value of this property cannot be accessed before
* g_application_register() has been called. See
* g_application_get_is_registered().
*
* Returns: %TRUE if @application is remote
*
* Since: 2.28
**/
gboolean
g_application_get_is_remote (GApplication *application)
{
g_return_val_if_fail (G_IS_APPLICATION (application), FALSE);
g_return_val_if_fail (application->priv->is_registered, FALSE);
return application->priv->is_remote;
}
/**
* g_application_get_dbus_connection:
* @application: a #GApplication
*
* Gets the #GDBusConnection being used by the application, or %NULL.
*
* If #GApplication is using its D-Bus backend then this function will
* return the #GDBusConnection being used for uniqueness and
* communication with the desktop environment and other instances of the
* application.
*
* If #GApplication is not using D-Bus then this function will return
* %NULL. This includes the situation where the D-Bus backend would
* normally be in use but we were unable to connect to the bus.
*
* This function must not be called before the application has been
* registered. See g_application_get_is_registered().
*
* Returns: (transfer none): a #GDBusConnection, or %NULL
*
* Since: 2.34
**/
GDBusConnection *
g_application_get_dbus_connection (GApplication *application)
{
g_return_val_if_fail (G_IS_APPLICATION (application), FALSE);
g_return_val_if_fail (application->priv->is_registered, FALSE);
return g_application_impl_get_dbus_connection (application->priv->impl);
}
/**
* g_application_get_dbus_object_path:
* @application: a #GApplication
*
* Gets the D-Bus object path being used by the application, or %NULL.
*
* If #GApplication is using its D-Bus backend then this function will
* return the D-Bus object path that #GApplication is using. If the
* application is the primary instance then there is an object published
* at this path. If the application is not the primary instance then
* the result of this function is undefined.
*
* If #GApplication is not using D-Bus then this function will return
* %NULL. This includes the situation where the D-Bus backend would
* normally be in use but we were unable to connect to the bus.
*
* This function must not be called before the application has been
* registered. See g_application_get_is_registered().
*
* Returns: the object path, or %NULL
*
* Since: 2.34
**/
const gchar *
g_application_get_dbus_object_path (GApplication *application)
{
g_return_val_if_fail (G_IS_APPLICATION (application), FALSE);
g_return_val_if_fail (application->priv->is_registered, FALSE);
return g_application_impl_get_dbus_object_path (application->priv->impl);
}
/* Register {{{1 */
/**
* g_application_register:
* @application: a #GApplication
* @cancellable: (allow-none): a #GCancellable, or %NULL
* @error: a pointer to a NULL #GError, or %NULL
*
* Attempts registration of the application.
*
* This is the point at which the application discovers if it is the
* primary instance or merely acting as a remote for an already-existing
* primary instance. This is implemented by attempting to acquire the
* application identifier as a unique bus name on the session bus using
* GDBus.
*
* If there is no application ID or if %G_APPLICATION_NON_UNIQUE was
* given, then this process will always become the primary instance.
*
* Due to the internal architecture of GDBus, method calls can be
* dispatched at any time (even if a main loop is not running). For
* this reason, you must ensure that any object paths that you wish to
* register are registered before calling this function.
*
* If the application has already been registered then %TRUE is
* returned with no work performed.
*
* The #GApplication::startup signal is emitted if registration succeeds
* and @application is the primary instance (including the non-unique
* case).
*
* In the event of an error (such as @cancellable being cancelled, or a
* failure to connect to the session bus), %FALSE is returned and @error
* is set appropriately.
*
* Note: the return value of this function is not an indicator that this
* instance is or is not the primary instance of the application. See
* g_application_get_is_remote() for that.
*
* Returns: %TRUE if registration succeeded
*
* Since: 2.28
**/
gboolean
g_application_register (GApplication *application,
GCancellable *cancellable,
GError **error)
{
g_return_val_if_fail (G_IS_APPLICATION (application), FALSE);
if (!application->priv->is_registered)
{
if (application->priv->id == NULL)
application->priv->flags |= G_APPLICATION_NON_UNIQUE;
application->priv->impl =
g_application_impl_register (application, application->priv->id,
application->priv->flags,
application->priv->actions,
&application->priv->remote_actions,
cancellable, error);
if (application->priv->impl == NULL)
return FALSE;
application->priv->is_remote = application->priv->remote_actions != NULL;
application->priv->is_registered = TRUE;
g_object_notify (G_OBJECT (application), "is-registered");
if (!application->priv->is_remote)
{
g_signal_emit (application, g_application_signals[SIGNAL_STARTUP], 0);
if (!application->priv->did_startup)
g_critical ("GApplication subclass '%s' failed to chain up on"
" ::startup (from start of override function)",
G_OBJECT_TYPE_NAME (application));
}
}
return TRUE;
}
/* Hold/release {{{1 */
/**
* g_application_hold:
* @application: a #GApplication
*
* Increases the use count of @application.
*
* Use this function to indicate that the application has a reason to
* continue to run. For example, g_application_hold() is called by GTK+
* when a toplevel window is on the screen.
*
* To cancel the hold, call g_application_release().
**/
void
g_application_hold (GApplication *application)
{
g_return_if_fail (G_IS_APPLICATION (application));
if (application->priv->inactivity_timeout_id)
{
g_source_remove (application->priv->inactivity_timeout_id);
application->priv->inactivity_timeout_id = 0;
}
application->priv->use_count++;
}
static gboolean
inactivity_timeout_expired (gpointer data)
{
GApplication *application = G_APPLICATION (data);
application->priv->inactivity_timeout_id = 0;
return G_SOURCE_REMOVE;
}
/**
* g_application_release:
* @application: a #GApplication
*
* Decrease the use count of @application.
*
* When the use count reaches zero, the application will stop running.
*
* Never call this function except to cancel the effect of a previous
* call to g_application_hold().
**/
void
g_application_release (GApplication *application)
{
g_return_if_fail (G_IS_APPLICATION (application));
application->priv->use_count--;
if (application->priv->use_count == 0 && application->priv->inactivity_timeout)
application->priv->inactivity_timeout_id = g_timeout_add (application->priv->inactivity_timeout,
inactivity_timeout_expired, application);
}
/* Activate, Open {{{1 */
/**
* g_application_activate:
* @application: a #GApplication
*
* Activates the application.
*
* In essence, this results in the #GApplication::activate signal being
* emitted in the primary instance.
*
* The application must be registered before calling this function.
*
* Since: 2.28
**/
void
g_application_activate (GApplication *application)
{
g_return_if_fail (G_IS_APPLICATION (application));
g_return_if_fail (application->priv->is_registered);
if (application->priv->is_remote)
g_application_impl_activate (application->priv->impl,
get_platform_data (application));
else
g_signal_emit (application, g_application_signals[SIGNAL_ACTIVATE], 0);
}
/**
* g_application_open:
* @application: a #GApplication
* @files: (array length=n_files): an array of #GFiles to open
* @n_files: the length of the @files array
* @hint: a hint (or ""), but never %NULL
*
* Opens the given files.
*
* In essence, this results in the #GApplication::open signal being emitted
* in the primary instance.
*
* @n_files must be greater than zero.
*
* @hint is simply passed through to the ::open signal. It is
* intended to be used by applications that have multiple modes for
* opening files (eg: "view" vs "edit", etc). Unless you have a need
* for this functionality, you should use "".
*
* The application must be registered before calling this function
* and it must have the %G_APPLICATION_HANDLES_OPEN flag set.
*
* Since: 2.28
**/
void
g_application_open (GApplication *application,
GFile **files,
gint n_files,
const gchar *hint)
{
g_return_if_fail (G_IS_APPLICATION (application));
g_return_if_fail (application->priv->flags &
G_APPLICATION_HANDLES_OPEN);
g_return_if_fail (application->priv->is_registered);
if (application->priv->is_remote)
g_application_impl_open (application->priv->impl,
files, n_files, hint,
get_platform_data (application));
else
g_signal_emit (application, g_application_signals[SIGNAL_OPEN],
0, files, n_files, hint);
}
/* Run {{{1 */
/**
* g_application_run:
* @application: a #GApplication
* @argc: the argc from main() (or 0 if @argv is %NULL)
* @argv: (array length=argc) (allow-none): the argv from main(), or %NULL
*
* Runs the application.
*
* This function is intended to be run from main() and its return value
* is intended to be returned by main(). Although you are expected to pass
* the @argc, @argv parameters from main() to this function, it is possible
* to pass %NULL if @argv is not available or commandline handling is not
* required.
*
* First, the local_command_line() virtual function is invoked.
* This function always runs on the local instance. It gets passed a pointer
* to a %NULL-terminated copy of @argv and is expected to remove the arguments
* that it handled (shifting up remaining arguments). See
* <xref linkend="gapplication-example-cmdline2"/> for an example of
* parsing @argv manually. Alternatively, you may use the #GOptionContext API,
* after setting <literal>argc = g_strv_length (argv);</literal>.
*
* The last argument to local_command_line() is a pointer to the @status
* variable which can used to set the exit status that is returned from
* g_application_run().
*
* If local_command_line() returns %TRUE, the command line is expected
* to be completely handled, including possibly registering as the primary
* instance, calling g_application_activate() or g_application_open(), etc.
*
* If local_command_line() returns %FALSE then the application is registered
* and the #GApplication::command-line signal is emitted in the primary
* instance (which may or may not be this instance). The signal handler
* gets passed a #GApplicationCommandLine object that (among other things)
* contains the remaining commandline arguments that have not been handled
* by local_command_line().
*
* If the application has the %G_APPLICATION_HANDLES_COMMAND_LINE
* flag set then the default implementation of local_command_line()
* always returns %FALSE immediately, resulting in the commandline
* always being handled in the primary instance.
*
* Otherwise, the default implementation of local_command_line() tries
* to do a couple of things that are probably reasonable for most
* applications. First, g_application_register() is called to attempt
* to register the application. If that works, then the command line
* arguments are inspected. If no commandline arguments are given, then
* g_application_activate() is called. If commandline arguments are
* given and the %G_APPLICATION_HANDLES_OPEN flag is set then they
* are assumed to be filenames and g_application_open() is called.
*
* If you need to handle commandline arguments that are not filenames,
* and you don't mind commandline handling to happen in the primary
* instance, you should set %G_APPLICATION_HANDLES_COMMAND_LINE and
* process the commandline arguments in your #GApplication::command-line
* signal handler, either manually or using the #GOptionContext API.
*
* If you are interested in doing more complicated local handling of the
* commandline then you should implement your own #GApplication subclass
* and override local_command_line(). In this case, you most likely want
* to return %TRUE from your local_command_line() implementation to
* suppress the default handling. See
* <xref linkend="gapplication-example-cmdline2"/> for an example.
*
* If, after the above is done, the use count of the application is zero
* then the exit status is returned immediately. If the use count is
* non-zero then the default main context is iterated until the use count
* falls to zero, at which point 0 is returned.
*
* If the %G_APPLICATION_IS_SERVICE flag is set, then the exiting at
* use count of zero is delayed for a while (ie: the instance stays
* around to provide its <emphasis>service</emphasis> to others).
*
* Returns: the exit status
*
* Since: 2.28
**/
int
g_application_run (GApplication *application,
int argc,
char **argv)
{
gchar **arguments;
int status;
gint i;
g_return_val_if_fail (G_IS_APPLICATION (application), 1);
g_return_val_if_fail (argc == 0 || argv != NULL, 1);
g_return_val_if_fail (!application->priv->must_quit_now, 1);
arguments = g_new (gchar *, argc + 1);
for (i = 0; i < argc; i++)
arguments[i] = g_strdup (argv[i]);
arguments[i] = NULL;
if (g_get_prgname () == NULL && argc > 0)
{
gchar *prgname;
prgname = g_path_get_basename (argv[0]);
g_set_prgname (prgname);
g_free (prgname);
}
if (!G_APPLICATION_GET_CLASS (application)
->local_command_line (application, &arguments, &status))
{
GError *error = NULL;
if (!g_application_register (application, NULL, &error))
{
g_printerr ("%s", error->message);
g_error_free (error);
return 1;
}
if (application->priv->is_remote)
{
GVariant *platform_data;
platform_data = get_platform_data (application);
status = g_application_impl_command_line (application->priv->impl,
arguments, platform_data);
}
else
{
GApplicationCommandLine *cmdline;
GVariant *v;
v = g_variant_new_bytestring_array ((const gchar **) arguments, -1);
cmdline = g_object_new (G_TYPE_APPLICATION_COMMAND_LINE,
"arguments", v, NULL);
g_signal_emit (application,
g_application_signals[SIGNAL_COMMAND_LINE],
0, cmdline, &status);
g_object_unref (cmdline);
}
}
g_strfreev (arguments);
if (application->priv->flags & G_APPLICATION_IS_SERVICE &&
application->priv->is_registered &&
!application->priv->use_count &&
!application->priv->inactivity_timeout_id)
{
application->priv->inactivity_timeout_id =
g_timeout_add (10000, inactivity_timeout_expired, application);
}
while (application->priv->use_count || application->priv->inactivity_timeout_id)
{
if (application->priv->must_quit_now)
break;
g_main_context_iteration (NULL, TRUE);
status = 0;
}
if (application->priv->is_registered && !application->priv->is_remote)
{
g_signal_emit (application, g_application_signals[SIGNAL_SHUTDOWN], 0);
if (!application->priv->did_shutdown)
g_critical ("GApplication subclass '%s' failed to chain up on"
" ::shutdown (from end of override function)",
G_OBJECT_TYPE_NAME (application));
}
if (application->priv->impl)
g_application_impl_flush (application->priv->impl);
g_settings_sync ();
return status;
}
static gchar **
g_application_list_actions (GActionGroup *action_group)
{
GApplication *application = G_APPLICATION (action_group);
g_return_val_if_fail (application->priv->is_registered, NULL);
if (application->priv->remote_actions != NULL)
return g_action_group_list_actions (G_ACTION_GROUP (application->priv->remote_actions));
else if (application->priv->actions != NULL)
return g_action_group_list_actions (application->priv->actions);
else
/* empty string array */
return g_new0 (gchar *, 1);
}
static gboolean
g_application_query_action (GActionGroup *group,
const gchar *action_name,
gboolean *enabled,
const GVariantType **parameter_type,
const GVariantType **state_type,
GVariant **state_hint,
GVariant **state)
{
GApplication *application = G_APPLICATION (group);
g_return_val_if_fail (application->priv->is_registered, FALSE);
if (application->priv->remote_actions != NULL)
return g_action_group_query_action (G_ACTION_GROUP (application->priv->remote_actions),
action_name,
enabled,
parameter_type,
state_type,
state_hint,
state);
if (application->priv->actions != NULL)
return g_action_group_query_action (application->priv->actions,
action_name,
enabled,
parameter_type,
state_type,
state_hint,
state);
return FALSE;
}
static void
g_application_change_action_state (GActionGroup *action_group,
const gchar *action_name,
GVariant *value)
{
GApplication *application = G_APPLICATION (action_group);
g_return_if_fail (application->priv->is_remote ||
application->priv->actions != NULL);
g_return_if_fail (application->priv->is_registered);
if (application->priv->remote_actions)
g_remote_action_group_change_action_state_full (application->priv->remote_actions,
action_name, value, get_platform_data (application));
else
g_action_group_change_action_state (application->priv->actions, action_name, value);
}
static void
g_application_activate_action (GActionGroup *action_group,
const gchar *action_name,
GVariant *parameter)
{
GApplication *application = G_APPLICATION (action_group);
g_return_if_fail (application->priv->is_remote ||
application->priv->actions != NULL);
g_return_if_fail (application->priv->is_registered);
if (application->priv->remote_actions)
g_remote_action_group_activate_action_full (application->priv->remote_actions,
action_name, parameter, get_platform_data (application));
else
g_action_group_activate_action (application->priv->actions, action_name, parameter);
}
static GAction *
g_application_lookup_action (GActionMap *action_map,
const gchar *action_name)
{
GApplication *application = G_APPLICATION (action_map);
g_return_val_if_fail (G_IS_SIMPLE_ACTION_GROUP (application->priv->actions), NULL);
return g_simple_action_group_lookup (G_SIMPLE_ACTION_GROUP (application->priv->actions), action_name);
}
static void
g_application_add_action (GActionMap *action_map,
GAction *action)
{
GApplication *application = G_APPLICATION (action_map);
g_return_if_fail (G_IS_SIMPLE_ACTION_GROUP (application->priv->actions));
g_simple_action_group_insert (G_SIMPLE_ACTION_GROUP (application->priv->actions), action);
}
static void
g_application_remove_action (GActionMap *action_map,
const gchar *action_name)
{
GApplication *application = G_APPLICATION (action_map);
g_return_if_fail (G_IS_SIMPLE_ACTION_GROUP (application->priv->actions));
g_simple_action_group_remove (G_SIMPLE_ACTION_GROUP (application->priv->actions), action_name);
}
static void
g_application_action_group_iface_init (GActionGroupInterface *iface)
{
iface->list_actions = g_application_list_actions;
iface->query_action = g_application_query_action;
iface->change_action_state = g_application_change_action_state;
iface->activate_action = g_application_activate_action;
}
static void
g_application_action_map_iface_init (GActionMapInterface *iface)
{
iface->lookup_action = g_application_lookup_action;
iface->add_action = g_application_add_action;
iface->remove_action = g_application_remove_action;
}
/* Default Application {{{1 */
static GApplication *default_app;
/**
* g_application_get_default:
*
* Returns the default #GApplication instance for this process.
*
* Normally there is only one #GApplication per process and it becomes
* the default when it is created. You can exercise more control over
* this by using g_application_set_default().
*
* If there is no default application then %NULL is returned.
*
* Returns: (transfer none): the default application for this process, or %NULL
*
* Since: 2.32
**/
GApplication *
g_application_get_default (void)
{
return default_app;
}
/**
* g_application_set_default:
* @application: (allow-none): the application to set as default, or %NULL
*
* Sets or unsets the default application for the process, as returned
* by g_application_get_default().
*
* This function does not take its own reference on @application. If
* @application is destroyed then the default application will revert
* back to %NULL.
*
* Since: 2.32
**/
void
g_application_set_default (GApplication *application)
{
default_app = application;
}
/**
* g_application_quit:
* @application: a #GApplication
*
* Immediately quits the application.
*
* Upon return to the mainloop, g_application_run() will return,
* calling only the 'shutdown' function before doing so.
*
* The hold count is ignored.
*
* The result of calling g_application_run() again after it returns is
* unspecified.
*
* Since: 2.32
**/
void
g_application_quit (GApplication *application)
{
g_return_if_fail (G_IS_APPLICATION (application));
application->priv->must_quit_now = TRUE;
}
/* Epilogue {{{1 */
/* vim:set foldmethod=marker: */
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