/*
* 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, see .
*
* Authors: Ryan Lortie
*/
/* 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 "gnotification-private.h"
#include "gnotificationbackend.h"
#include "gdbusutils.h"
#include "gioenumtypes.h"
#include "gioenums.h"
#include "gfile.h"
#include "glibintl.h"
#include
/**
* SECTION:gapplication
* @title: GApplication
* @short_description: Core application class
* @include: gio/gio.h
*
* 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 "use count" 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 "primary instance"; 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 main() 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
* [DBus bus name](http://dbus.freedesktop.org/doc/dbus-specification.html#message-protocol-names-interface).
* 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:
*
* - via 'Activate' (i.e. just starting the application)
*
* - via 'Open' (i.e. opening some files)
*
* - by handling a command-line
*
* - via activating an action
*
* 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 "platform data 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.
*
* For an example of opening files with a GApplication, see
* [gapplication-example-open.c](https://git.gnome.org/browse/glib/tree/gio/tests/gapplication-example-open.c).
*
* For an example of using actions with GApplication, see
* [gapplication-example-actions.c](https://git.gnome.org/browse/glib/tree/gio/tests/gapplication-example-actions.c).
*
* For an example of using extra D-Bus hooks with GApplication, see
* [gapplication-example-dbushooks.c](https://git.gnome.org/browse/glib/tree/gio/tests/gapplication-example-dbushooks.c).
*/
/**
* 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 busy_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;
GNotificationBackend *notifications;
/* GOptionContext support */
GOptionGroup *main_options;
GSList *option_groups;
GHashTable *packed_options;
gboolean options_parsed;
};
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,
SIGNAL_HANDLE_LOCAL_OPTIONS,
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_ADD_PRIVATE (GApplication)
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);
}
/* Command line option handling {{{1 */
static void
free_option_entry (gpointer data)
{
GOptionEntry *entry = data;
switch (entry->arg)
{
case G_OPTION_ARG_STRING:
case G_OPTION_ARG_FILENAME:
g_free (*(gchar **) entry->arg_data);
break;
case G_OPTION_ARG_STRING_ARRAY:
case G_OPTION_ARG_FILENAME_ARRAY:
g_strfreev (*(gchar ***) entry->arg_data);
break;
default:
/* most things require no free... */
break;
}
/* ...except for the space that we allocated for it ourselves */
g_free (entry->arg_data);
g_slice_free (GOptionEntry, entry);
}
static void
g_application_pack_option_entries (GApplication *application,
GVariantDict *dict)
{
GHashTableIter iter;
gpointer item;
g_hash_table_iter_init (&iter, application->priv->packed_options);
while (g_hash_table_iter_next (&iter, NULL, &item))
{
GOptionEntry *entry = item;
GVariant *value = NULL;
switch (entry->arg)
{
case G_OPTION_ARG_NONE:
if (*(gboolean *) entry->arg_data != 2)
value = g_variant_new_boolean (*(gboolean *) entry->arg_data);
break;
case G_OPTION_ARG_STRING:
if (*(gchar **) entry->arg_data)
value = g_variant_new_string (*(gchar **) entry->arg_data);
break;
case G_OPTION_ARG_INT:
if (*(gint32 *) entry->arg_data)
value = g_variant_new_int32 (*(gint32 *) entry->arg_data);
break;
case G_OPTION_ARG_FILENAME:
if (*(gchar **) entry->arg_data)
value = g_variant_new_bytestring (*(gchar **) entry->arg_data);
break;
case G_OPTION_ARG_STRING_ARRAY:
if (*(gchar ***) entry->arg_data)
value = g_variant_new_strv (*(const gchar ***) entry->arg_data, -1);
break;
case G_OPTION_ARG_FILENAME_ARRAY:
if (*(gchar ***) entry->arg_data)
value = g_variant_new_bytestring_array (*(const gchar ***) entry->arg_data, -1);
break;
case G_OPTION_ARG_DOUBLE:
if (*(gdouble *) entry->arg_data)
value = g_variant_new_double (*(gdouble *) entry->arg_data);
break;
case G_OPTION_ARG_INT64:
if (*(gint64 *) entry->arg_data)
value = g_variant_new_int64 (*(gint64 *) entry->arg_data);
break;
default:
g_assert_not_reached ();
}
if (value)
g_variant_dict_insert_value (dict, entry->long_name, value);
}
}
static GVariantDict *
g_application_parse_command_line (GApplication *application,
gchar ***arguments,
GError **error)
{
gboolean become_service = FALSE;
GVariantDict *dict = NULL;
GOptionContext *context;
/* Due to the memory management of GOptionGroup we can only parse
* options once. That's because once you add a group to the
* GOptionContext there is no way to get it back again. This is fine:
* local_command_line() should never get invoked more than once
* anyway. Add a sanity check just to be sure.
*/
g_return_val_if_fail (!application->priv->options_parsed, NULL);
context = g_option_context_new (NULL);
/* Add the main option group, if it exists */
if (application->priv->main_options)
{
/* This consumes the main_options */
g_option_context_set_main_group (context, application->priv->main_options);
application->priv->main_options = NULL;
}
/* Add any other option groups if they exist. Adding them to the
* context will consume them, so we free the list as we go...
*/
while (application->priv->option_groups)
{
g_option_context_add_group (context, application->priv->option_groups->data);
application->priv->option_groups = g_slist_delete_link (application->priv->option_groups,
application->priv->option_groups);
}
/* If the application has not registered local options and it has
* G_APPLICATION_HANDLES_COMMAND_LINE then we have to assume that
* their primary instance commandline handler may want to deal with
* the arguments. We must therefore ignore them.
*/
if (application->priv->main_options == NULL && (application->priv->flags & G_APPLICATION_HANDLES_COMMAND_LINE))
g_option_context_set_ignore_unknown_options (context, TRUE);
/* In the case that we are not explicitly marked as a service or a
* launcher then we want to add the "--gapplication-service" option to
* allow the process to be made into a service.
*/
if ((application->priv->flags & (G_APPLICATION_IS_SERVICE | G_APPLICATION_IS_LAUNCHER)) == 0)
{
GOptionGroup *option_group;
GOptionEntry entries[] = {
{ "gapplication-service", '\0', 0, G_OPTION_ARG_NONE, &become_service,
N_("Enter GApplication service mode (use from D-Bus service files)") },
{ NULL }
};
option_group = g_option_group_new ("gapplication",
_("GApplication options"), _("Show GApplication options"),
NULL, NULL);
g_option_group_set_translation_domain (option_group, GETTEXT_PACKAGE);
g_option_group_add_entries (option_group, entries);
g_option_context_add_group (context, option_group);
}
/* Now we parse... */
if (!g_option_context_parse_strv (context, arguments, error))
goto out;
/* Check for --gapplication-service */
if (become_service)
application->priv->flags |= G_APPLICATION_IS_SERVICE;
dict = g_variant_dict_new (NULL);
if (application->priv->packed_options)
{
g_application_pack_option_entries (application, dict);
g_hash_table_unref (application->priv->packed_options);
application->priv->packed_options = NULL;
}
out:
/* Make sure we don't run again */
application->priv->options_parsed = TRUE;
g_option_context_free (context);
return dict;
}
static void
add_packed_option (GApplication *application,
GOptionEntry *entry)
{
switch (entry->arg)
{
case G_OPTION_ARG_NONE:
entry->arg_data = g_new (gboolean, 1);
*(gboolean *) entry->arg_data = 2;
break;
case G_OPTION_ARG_INT:
entry->arg_data = g_new0 (gint, 1);
break;
case G_OPTION_ARG_STRING:
case G_OPTION_ARG_FILENAME:
case G_OPTION_ARG_STRING_ARRAY:
case G_OPTION_ARG_FILENAME_ARRAY:
entry->arg_data = g_new0 (gpointer, 1);
break;
case G_OPTION_ARG_INT64:
entry->arg_data = g_new0 (gint64, 1);
break;
case G_OPTION_ARG_DOUBLE:
entry->arg_data = g_new0 (gdouble, 1);
break;
default:
g_return_if_reached ();
}
if (!application->priv->packed_options)
application->priv->packed_options = g_hash_table_new_full (g_str_hash, g_str_equal, g_free, free_option_entry);
g_hash_table_insert (application->priv->packed_options,
g_strdup (entry->long_name),
g_slice_dup (GOptionEntry, entry));
}
/**
* g_application_add_main_option_entries:
* @application: a #GApplication
* @entries: (array zero-terminated=1) (element-type GOptionEntry) a
* %NULL-terminated list of #GOptionEntrys
*
* Adds main option entries to be handled by @application.
*
* This function is comparable to g_option_context_add_main_entries().
*
* After the commandline arguments are parsed, the
* #GApplication::handle-local-options signal will be emitted. At this
* point, the application can inspect the values pointed to by @arg_data
* in the given #GOptionEntrys.
*
* Unlike #GOptionContext, #GApplication supports giving a %NULL
* @arg_data for a non-callback #GOptionEntry. This results in the
* argument in question being packed into a #GVariantDict which is also
* passed to #GApplication::handle-local-options, where it can be
* inspected and modified. If %G_APPLICATION_HANDLES_COMMAND_LINE is
* set, then the resulting dictionary is sent to the primary instance,
* where g_application_command_line_get_options_dict() will return it.
* This "packing" is done according to the type of the argument --
* booleans for normal flags, strings for strings, bytestrings for
* filenames, etc. The packing only occurs if the flag is given (ie: we
* do not pack a "false" #GVariant in the case that a flag is missing).
*
* In general, it is recommended that all commandline arguments are
* parsed locally. The options dictionary should then be used to
* transmit the result of the parsing to the primary instance, where
* g_variant_dict_lookup() can be used. For local options, it is
* possible to either use @arg_data in the usual way, or to consult (and
* potentially remove) the option from the options dictionary.
*
* This function is new in GLib 2.40. Before then, the only real choice
* was to send all of the commandline arguments (options and all) to the
* primary instance for handling. #GApplication ignored them completely
* on the local side. Calling this function "opts in" to the new
* behaviour, and in particular, means that unrecognised options will be
* treated as errors. Unrecognised options have never been ignored when
* %G_APPLICATION_HANDLES_COMMAND_LINE is unset.
*
* If #GApplication::handle-local-options needs to see the list of
* filenames, then the use of %G_OPTION_REMAINING is recommended. If
* @arg_data is %NULL then %G_OPTION_REMAINING can be used as a key into
* the options dictionary. If you do use %G_OPTION_REMAINING then you
* need to handle these arguments for yourself because once they are
* consumed, they will no longer be visible to the default handling
* (which treats them as filenames to be opened).
*
* Since: 2.40
*/
void
g_application_add_main_option_entries (GApplication *application,
const GOptionEntry *entries)
{
gint i;
g_return_if_fail (G_IS_APPLICATION (application));
g_return_if_fail (entries != NULL);
if (!application->priv->main_options)
application->priv->main_options = g_option_group_new (NULL, NULL, NULL, NULL, NULL);
for (i = 0; entries[i].long_name; i++)
{
GOptionEntry my_entries[2] = { entries[i], { NULL } };
if (!my_entries[0].arg_data)
add_packed_option (application, &my_entries[0]);
g_option_group_add_entries (application->priv->main_options, my_entries);
}
}
/**
* g_application_add_option_group:
* @application: the #GApplication
* @group: a #GOptionGroup
*
* Adds a #GOptionGroup to the commandline handling of @application.
*
* This function is comparable to g_option_context_add_group().
*
* Unlike g_application_add_main_option_entries(), this function does
* not deal with %NULL @arg_data and never transmits options to the
* primary instance.
*
* The reason for that is because, by the time the options arrive at the
* primary instance, it is typically too late to do anything with them.
* Taking the GTK option group as an example: GTK will already have been
* initialised by the time the #GApplication::command-line handler runs.
* In the case that this is not the first-running instance of the
* application, the existing instance may already have been running for
* a very long time.
*
* This means that the options from #GOptionGroup are only really usable
* in the case that the instance of the application being run is the
* first instance. Passing options like `--display=` or `--gdk-debug=`
* on future runs will have no effect on the existing primary instance.
*
* Calling this function will cause the options in the supplied option
* group to be parsed, but it does not cause you to be "opted in" to the
* new functionality whereby unrecognised options are rejected even if
* %G_APPLICATION_HANDLES_COMMAND_LINE was given.
*
* Since: 2.40
**/
void
g_application_add_option_group (GApplication *application,
GOptionGroup *group)
{
g_return_if_fail (G_IS_APPLICATION (application));
g_return_if_fail (group != NULL);
application->priv->option_groups = g_slist_prepend (application->priv->option_groups, group);
}
/* 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 gint
g_application_real_handle_local_options (GApplication *application,
GVariantDict *options)
{
return -1;
}
static GVariant *
get_platform_data (GApplication *application,
GVariant *options)
{
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);
}
if (options)
g_variant_builder_add (builder, "{sv}", "options", options);
G_APPLICATION_GET_CLASS (application)->
add_platform_data (application, builder);
result = g_variant_builder_end (builder);
g_variant_builder_unref (builder);
return result;
}
static void
g_application_call_command_line (GApplication *application,
const gchar * const *arguments,
GVariant *options,
gint *exit_status)
{
if (application->priv->is_remote)
{
GVariant *platform_data;
platform_data = get_platform_data (application, options);
*exit_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,
"options", options,
NULL);
g_signal_emit (application, g_application_signals[SIGNAL_COMMAND_LINE], 0, cmdline, exit_status);
g_object_unref (cmdline);
}
}
static gboolean
g_application_real_local_command_line (GApplication *application,
gchar ***arguments,
int *exit_status)
{
GError *error = NULL;
GVariantDict *options;
gint n_args;
options = g_application_parse_command_line (application, arguments, &error);
if (!options)
{
g_printerr ("%s\n", error->message);
*exit_status = 1;
return TRUE;
}
g_signal_emit (application, g_application_signals[SIGNAL_HANDLE_LOCAL_OPTIONS], 0, options, exit_status);
if (*exit_status >= 0)
{
g_variant_dict_unref (options);
return TRUE;
}
if (!g_application_register (application, NULL, &error))
{
g_printerr ("Failed to register: %s\n", error->message);
g_variant_dict_unref (options);
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;
*exit_status = 1;
}
else
*exit_status = 0;
}
else if (application->priv->flags & G_APPLICATION_HANDLES_COMMAND_LINE)
{
g_application_call_command_line (application,
(const gchar **) *arguments,
g_variant_dict_end (options),
exit_status);
}
else
{
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;
}
}
}
g_variant_dict_unref (options);
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);
g_slist_free_full (application->priv->option_groups, (GDestroyNotify) g_option_group_free);
if (application->priv->main_options)
g_option_group_free (application->priv->main_options);
if (application->priv->packed_options)
g_hash_table_unref (application->priv->packed_options);
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);
if (application->priv->notifications)
g_object_unref (application->priv->notifications);
G_OBJECT_CLASS (g_application_parent_class)
->finalize (object);
}
static void
g_application_init (GApplication *application)
{
application->priv = g_application_get_instance_private (application);
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 gboolean
g_application_handle_local_options_accumulator (GSignalInvocationHint *ihint,
GValue *return_accu,
const GValue *handler_return,
gpointer dummy)
{
gint value;
value = g_value_get_int (handler_return);
g_value_set_int (return_accu, value);
return value >= 0;
}
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->handle_local_options = g_application_real_handle_local_options;
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);
/**
* GApplication::handle-local-options:
* @application: the application
* @options: the options dictionary
*
* The ::handle-local-options signal is emitted on the local instance
* after the parsing of the commandline options has occurred.
*
* You can add options to be recognised during commandline option
* parsing using g_application_add_main_option_entries() and
* g_application_add_option_group().
*
* Signal handlers can inspect @options (along with values pointed to
* from the @arg_data of an installed #GOptionEntrys) in order to
* decide to perform certain actions, including direct local handling
* (which may be useful for options like --version).
*
* If the options have been "handled" then a non-negative value should
* be returned. In this case, the return value is the exit status: 0
* for success and a positive value for failure. -1 means to continue
* normal processing.
*
* In the event that the application is marked
* %G_APPLICATION_HANDLES_COMMAND_LINE the "normal processing" will
* send the @option dictionary to the primary instance where it can be
* read with g_application_command_line_get_options(). The signal
* handler can modify the dictionary before returning, and the
* modified dictionary will be sent.
*
* In the event that %G_APPLICATION_HANDLES_COMMAND_LINE is not set,
* "normal processing" will treat the remaining uncollected command
* line arguments as filenames or URIs. If there are no arguments,
* the application is activated by g_application_activate(). One or
* more arguments results in a call to g_application_open().
*
* If you want to handle the local commandline arguments for yourself
* by converting them to calls to g_application_open() or
* g_action_group_activate_action() then you must be sure to register
* the application first. You should probably not call
* g_application_activate() for yourself, however: just return -1 and
* allow the default handler to do it for you. This will ensure that
* the `--gapplication-service` switch works properly (i.e. no activation
* in that case).
*
* Note that this signal is emitted from the default implementation of
* local_command_line(). If you override that function and don't
* chain up then this signal will never be emitted.
*
* You can override local_command_line() if you need more powerful
* capabilities than what is provided here, but this should not
* normally be required.
*
* Since: 2.40
**/
g_application_signals[SIGNAL_HANDLE_LOCAL_OPTIONS] =
g_signal_new ("handle-local-options", G_TYPE_APPLICATION, G_SIGNAL_RUN_LAST,
G_STRUCT_OFFSET (GApplicationClass, handle_local_options),
g_application_handle_local_options_accumulator, NULL, NULL,
G_TYPE_INT, 1, G_TYPE_VARIANT_DICT);
}
/* 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:
*
* - Application identifiers must contain only the ASCII characters
* "[A-Z][a-z][0-9]_-." and must not begin with a digit.
*
* - Application identifiers must contain at least one '.' (period)
* character (and thus at least three elements).
*
* - Application identifiers must not begin or end with a '.' (period)
* character.
*
* - Application identifiers must not contain consecutive '.' (period)
* characters.
*
* - Application identifiers must not exceed 255 characters.
*
* 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, NULL));
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, NULL));
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. Note that on Windows, @argc and @argv are ignored, and
* g_win32_get_command_line() is called internally (for proper support
* of Unicode commandline arguments).
*
* #GApplication will attempt to parse the commandline arguments. You
* can add commandline flags to the list of recognised options by way of
* g_application_add_main_option_entries(). After this, the
* #GApplication::handle-local-options signal is emitted, from which the
* application can inspect the values of its #GOptionEntrys.
*
* #GApplication::handle-local-options is a good place to handle options
* such as `--version`, where an immediate reply from the local process is
* desired (instead of communicating with an already-running instance).
* A #GApplication::handle-local-options handler can stop further processing
* by returning a non-negative value, which then becomes the exit status of
* the process.
*
* What happens next depends on the flags: if
* %G_APPLICATION_HANDLES_COMMAND_LINE was specified then the remaining
* commandline arguments are sent to the primary instance, where a
* #GApplication::command-line signal is emitted. Otherwise, the
* remaining commandline arguments are assumed to be a list of files.
* If there are no files listed, the application is activated via the
* #GApplication::activate signal. If there are one or more files, and
* %G_APPLICATION_HANDLES_OPEN was specified then the files are opened
* via the #GApplication::open signal.
*
* 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
* [gapplication-example-cmdline2.c][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 service will
* run for as much as 10 seconds with a use count of zero while waiting
* for the message that caused the activation to arrive. After that,
* if the use count falls to zero the application will exit immediately,
* except in the case that g_application_set_inactivity_timeout() is in
* use.
*
* This function sets the prgname (g_set_prgname()), if not already set,
* to the basename of argv[0]. Since 2.38, if %G_APPLICATION_IS_SERVICE
* is specified, the prgname is set to the application ID. The main
* impact of this is is that the wmclass of windows created by Gtk+ will
* be set accordingly, which helps the window manager determine which
* application is showing the window.
*
* Since 2.40, applications that are not explicitly flagged as services
* or launchers (ie: neither %G_APPLICATION_IS_SERVICE or
* %G_APPLICATION_IS_LAUNCHER are given as flags) will check (from the
* default handler for local_command_line) if "--gapplication-service"
* was given in the command line. If this flag is present then normal
* commandline processing is interrupted and the
* %G_APPLICATION_IS_SERVICE flag is set. This provides a "compromise"
* solution whereby running an application directly from the commandline
* will invoke it in the normal way (which can be useful for debugging)
* while still allowing applications to be D-Bus activated in service
* mode. The D-Bus service file should invoke the executable with
* "--gapplication-service" as the sole commandline argument. This
* approach is suitable for use by most graphical applications but
* should not be used from applications like editors that need precise
* control over when processes invoked via the commandline will exit and
* what their exit status will be.
*
* Returns: the exit status
*
* Since: 2.28
**/
int
g_application_run (GApplication *application,
int argc,
char **argv)
{
gchar **arguments;
int status;
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);
#ifdef G_OS_WIN32
arguments = g_win32_get_command_line ();
#else
{
gint i;
arguments = g_new (gchar *, argc + 1);
for (i = 0; i < argc; i++)
arguments[i] = g_strdup (argv[i]);
arguments[i] = NULL;
}
#endif
if (g_get_prgname () == NULL)
{
if (application->priv->flags & G_APPLICATION_IS_SERVICE)
{
g_set_prgname (application->priv->id);
}
else if (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 ("Failed to register: %s\n", error->message);
g_error_free (error);
return 1;
}
g_application_call_command_line (application, (const gchar **) arguments, NULL, &status);
}
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, NULL));
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, NULL));
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_ACTION_MAP (application->priv->actions), NULL);
return g_action_map_lookup_action (G_ACTION_MAP (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_ACTION_MAP (application->priv->actions));
g_action_map_add_action (G_ACTION_MAP (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_ACTION_MAP (application->priv->actions));
g_action_map_remove_action (G_ACTION_MAP (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;
}
/**
* g_application_mark_busy:
* @application: a #GApplication
*
* Increases the busy count of @application.
*
* Use this function to indicate that the application is busy, for instance
* while a long running operation is pending.
*
* The busy state will be exposed to other processes, so a session shell will
* use that information to indicate the state to the user (e.g. with a
* spinner).
*
* To cancel the busy indication, use g_application_unmark_busy().
*
* Since: 2.38
**/
void
g_application_mark_busy (GApplication *application)
{
gboolean was_busy;
g_return_if_fail (G_IS_APPLICATION (application));
was_busy = (application->priv->busy_count > 0);
application->priv->busy_count++;
if (!was_busy)
g_application_impl_set_busy_state (application->priv->impl, TRUE);
}
/**
* g_application_unmark_busy:
* @application: a #GApplication
*
* Decreases the busy count of @application.
*
* When the busy count reaches zero, the new state will be propagated
* to other processes.
*
* This function must only be called to cancel the effect of a previous
* call to g_application_mark_busy().
*
* Since: 2.38
**/
void
g_application_unmark_busy (GApplication *application)
{
g_return_if_fail (G_IS_APPLICATION (application));
g_return_if_fail (application->priv->busy_count > 0);
application->priv->busy_count--;
if (application->priv->busy_count == 0)
g_application_impl_set_busy_state (application->priv->impl, FALSE);
}
/* Notifications {{{1 */
/**
* g_application_send_notification:
* @application: a #GApplication
* @id: (allow-none): id of the notification, or %NULL
* @notification: the #GNotification to send
*
* Sends a notification on behalf of @application to the desktop shell.
* There is no guarantee that the notification is displayed immediately,
* or even at all.
*
* Notifications may persist after the application exits. It will be
* D-Bus-activated when the notification or one of its actions is
* activated.
*
* Modifying @notification after this call has no effect. However, the
* object can be reused for a later call to this function.
*
* @id may be any string that uniquely identifies the event for the
* application. It does not need to be in any special format. For
* example, "new-message" might be appropriate for a notification about
* new messages.
*
* If a previous notification was sent with the same @id, it will be
* replaced with @notification and shown again as if it was a new
* notification. This works even for notifications sent from a previous
* execution of the application, as long as @id is the same string.
*
* @id may be %NULL, but it is impossible to replace or withdraw
* notifications without an id.
*
* If @notification is no longer relevant, it can be withdrawn with
* g_application_withdraw_notification().
*
* Since: 2.40
*/
void
g_application_send_notification (GApplication *application,
const gchar *id,
GNotification *notification)
{
gchar *generated_id = NULL;
g_return_if_fail (G_IS_APPLICATION (application));
g_return_if_fail (G_IS_NOTIFICATION (notification));
g_return_if_fail (g_application_get_is_registered (application));
g_return_if_fail (!g_application_get_is_remote (application));
if (application->priv->notifications == NULL)
application->priv->notifications = g_notification_backend_new_default (application);
if (id == NULL)
{
generated_id = g_dbus_generate_guid ();
id = generated_id;
}
g_notification_backend_send_notification (application->priv->notifications, id, notification);
g_free (generated_id);
}
/**
* g_application_withdraw_notification:
* @application: a #GApplication
* @id: id of a previously sent notification
*
* Withdraws a notification that was sent with
* g_application_send_notification().
*
* This call does nothing if a notification with @id doesn't exist or
* the notification was never sent.
*
* This function works even for notifications sent in previous
* executions of this application, as long @id is the same as it was for
* the sent notification.
*
* Note that notifications are dismissed when the user clicks on one
* of the buttons in a notification or triggers its default action, so
* there is no need to explicitly withdraw the notification in that case.
*
* Since: 2.40
*/
void
g_application_withdraw_notification (GApplication *application,
const gchar *id)
{
g_return_if_fail (G_IS_APPLICATION (application));
g_return_if_fail (id != NULL);
if (application->priv->notifications)
g_notification_backend_withdraw_notification (application->priv->notifications, id);
}
/* Epilogue {{{1 */
/* vim:set foldmethod=marker: */