Interface

GioAppInfo

Description 

interface Gio.AppInfo : GObject.Object

Information about an installed application and methods to launch it (with file arguments).

GAppInfo and GAppLaunchContext are used for describing and launching applications installed on the system.

As of GLib 2.20, URIs will always be converted to POSIX paths (using g_file_get_path()) when using g_app_info_launch() even if the application requested an URI and not a POSIX path. For example for a desktop-file based application with Exec key totemU` and a single URI,sftp://foo/file.avi, then/home/user/.gvfs/sftp on foo/file.aviwill be passed. This will only work if a set of suitable GIO extensions (such as GVfs 2.26 compiled with FUSE support), is available and operational; if this is not the case, the URI will be passed unmodified to the application. Some URIs, such asmailto:`, of course cannot be mapped to a POSIX path (in GVfs there’s no FUSE mount for it); such URIs will be passed unmodified to the application.

Specifically for GVfs 2.26 and later, the POSIX URI will be mapped back to the GIO URI in the GFile constructors (since GVfs implements the GVfs extension point). As such, if the application needs to examine the URI, it needs to use g_file_get_uri() or similar on GFile. In other words, an application cannot assume that the URI passed to e.g. g_file_new_for_commandline_arg() is equal to the result of g_file_get_uri(). The following snippet illustrates this:

GFile *f;
char *uri;

file = g_file_new_for_commandline_arg (uri_from_commandline);

uri = g_file_get_uri (file);
strcmp (uri, uri_from_commandline) == 0;
g_free (uri);

if (g_file_has_uri_scheme (file, "cdda"))
  {
    // do something special with uri
  }
g_object_unref (file);

This code will work when both cdda://sr0/Track 1.wav and /home/user/.gvfs/cdda on sr0/Track 1.wav is passed to the application. It should be noted that it’s generally not safe for applications to rely on the format of a particular URIs. Different launcher applications (e.g. file managers) may have different ideas of what a given URI means.

Prerequisite

In order to implement AppInfo, your type must inherit fromGObject.

Implementations

Functions

g_app_info_create_from_commandline

Creates a new GAppInfo from the given information.

g_app_info_get_all

Gets a list of all of the applications currently registered on this system.

g_app_info_get_all_for_type

Gets a list of all GAppInfos for a given content type, including the recommended and fallback GAppInfos. See g_app_info_get_recommended_for_type() and g_app_info_get_fallback_for_type().

g_app_info_get_default_for_type

Gets the default GAppInfo for a given content type.

g_app_info_get_default_for_type_async

Asynchronously gets the default GAppInfo for a given content type.

since: 2.74

g_app_info_get_default_for_type_finish

Finishes a default GAppInfo lookup started by g_app_info_get_default_for_type_async().

since: 2.74

g_app_info_get_default_for_uri_scheme

Gets the default application for handling URIs with the given URI scheme. A URI scheme is the initial part of the URI, up to but not including the ‘:’, e.g. “http”, “ftp” or “sip”.

g_app_info_get_default_for_uri_scheme_async

Asynchronously gets the default application for handling URIs with the given URI scheme. A URI scheme is the initial part of the URI, up to but not including the ‘:’, e.g. “http”, “ftp” or “sip”.

since: 2.74

g_app_info_get_default_for_uri_scheme_finish

Finishes a default GAppInfo lookup started by g_app_info_get_default_for_uri_scheme_async().

since: 2.74

g_app_info_get_fallback_for_type

Gets a list of fallback GAppInfos for a given content type, i.e. those applications which claim to support the given content type by MIME type subclassing and not directly.

since: 2.28

g_app_info_get_recommended_for_type

Gets a list of recommended GAppInfos for a given content type, i.e. those applications which claim to support the given content type exactly, and not by MIME type subclassing. Note that the first application of the list is the last used one, i.e. the last one for which g_app_info_set_as_last_used_for_type() has been called.

since: 2.28

g_app_info_launch_default_for_uri

Utility function that launches the default application registered to handle the specified uri. Synchronous I/O is done on the uri to detect the type of the file if required.

g_app_info_launch_default_for_uri_async

Async version of g_app_info_launch_default_for_uri().

since: 2.50

g_app_info_launch_default_for_uri_finish

Finishes an asynchronous launch-default-for-uri operation.

since: 2.50

g_app_info_reset_type_associations

Removes all changes to the type associations done by g_app_info_set_as_default_for_type(), g_app_info_set_as_default_for_extension(), g_app_info_add_supports_type() or g_app_info_remove_supports_type().

since: 2.20

Instance methods

g_app_info_add_supports_type

Adds a content type to the application information to indicate the application is capable of opening files with the given content type.

g_app_info_can_delete

Obtains the information whether the GAppInfo can be deleted. See g_app_info_delete().

since: 2.20

g_app_info_can_remove_supports_type

Checks if a supported content type can be removed from an application.

g_app_info_delete

Tries to delete a GAppInfo.

since: 2.20

g_app_info_dup

Creates a duplicate of a GAppInfo.

g_app_info_equal

Checks if two GAppInfos are equal.

g_app_info_get_commandline

Gets the commandline with which the application will be started.

since: 2.20

g_app_info_get_description

Gets a human-readable description of an installed application.

g_app_info_get_display_name

Gets the display name of the application. The display name is often more descriptive to the user than the name itself.

since: 2.24

g_app_info_get_executable

Gets the executable’s name for the installed application.

g_app_info_get_icon

Gets the icon for the application.

g_app_info_get_id

Gets the ID of an application. An id is a string that identifies the application. The exact format of the id is platform dependent. For instance, on Unix this is the desktop file id from the xdg menu specification.

g_app_info_get_name

Gets the installed name of the application.

g_app_info_get_supported_types

Retrieves the list of content types that app_info claims to support. If this information is not provided by the environment, this function will return NULL. This function does not take in consideration associations added with g_app_info_add_supports_type(), but only those exported directly by the application.

since: 2.34

g_app_info_launch

Launches the application. Passes files to the launched application as arguments, using the optional context to get information about the details of the launcher (like what screen it is on). On error, error will be set accordingly.

g_app_info_launch_uris

Launches the application. This passes the uris to the launched application as arguments, using the optional context to get information about the details of the launcher (like what screen it is on). On error, error will be set accordingly. If the application only supports one URI per invocation as part of their command-line, multiple instances of the application will be spawned.

g_app_info_launch_uris_async

Async version of g_app_info_launch_uris().

since: 2.60

g_app_info_launch_uris_finish

Finishes a g_app_info_launch_uris_async() operation.

since: 2.60

g_app_info_remove_supports_type

Removes a supported type from an application, if possible.

g_app_info_set_as_default_for_extension

Sets the application as the default handler for the given file extension.

g_app_info_set_as_default_for_type

Sets the application as the default handler for a given type.

g_app_info_set_as_last_used_for_type

Sets the application as the last used application for a given type. This will make the application appear as first in the list returned by g_app_info_get_recommended_for_type(), regardless of the default application for that content type.

g_app_info_should_show

Checks if the application info should be shown in menus that list available applications.

g_app_info_supports_files

Checks if the application accepts files as arguments.

g_app_info_supports_uris

Checks if the application supports reading files and directories from URIs.

Interface structure 

struct GioAppInfoIface {
  GTypeInterface g_iface;
  GAppInfo* (* dup) (
    GAppInfo* appinfo
  );
  gboolean (* equal) (
    GAppInfo* appinfo1,
    GAppInfo* appinfo2
  );
  const char* (* get_id) (
    GAppInfo* appinfo
  );
  const char* (* get_name) (
    GAppInfo* appinfo
  );
  const char* (* get_description) (
    GAppInfo* appinfo
  );
  const char* (* get_executable) (
    GAppInfo* appinfo
  );
  GIcon* (* get_icon) (
    GAppInfo* appinfo
  );
  gboolean (* launch) (
    GAppInfo* appinfo,
    GList* files,
    GAppLaunchContext* context,
    GError** error
  );
  gboolean (* supports_uris) (
    GAppInfo* appinfo
  );
  gboolean (* supports_files) (
    GAppInfo* appinfo
  );
  gboolean (* launch_uris) (
    GAppInfo* appinfo,
    GList* uris,
    GAppLaunchContext* context,
    GError** error
  );
  gboolean (* should_show) (
    GAppInfo* appinfo
  );
  gboolean (* set_as_default_for_type) (
    GAppInfo* appinfo,
    const char* content_type,
    GError** error
  );
  gboolean (* set_as_default_for_extension) (
    GAppInfo* appinfo,
    const char* extension,
    GError** error
  );
  gboolean (* add_supports_type) (
    GAppInfo* appinfo,
    const char* content_type,
    GError** error
  );
  gboolean (* can_remove_supports_type) (
    GAppInfo* appinfo
  );
  gboolean (* remove_supports_type) (
    GAppInfo* appinfo,
    const char* content_type,
    GError** error
  );
  gboolean (* can_delete) (
    GAppInfo* appinfo
  );
  gboolean (* do_delete) (
    GAppInfo* appinfo
  );
  const char* (* get_commandline) (
    GAppInfo* appinfo
  );
  const char* (* get_display_name) (
    GAppInfo* appinfo
  );
  gboolean (* set_as_last_used_for_type) (
    GAppInfo* appinfo,
    const char* content_type,
    GError** error
  );
  const char** (* get_supported_types) (
    GAppInfo* appinfo
  );
  void (* launch_uris_async) (
    GAppInfo* appinfo,
    GList* uris,
    GAppLaunchContext* context,
    GCancellable* cancellable,
    GAsyncReadyCallback callback,
    gpointer user_data
  );
  gboolean (* launch_uris_finish) (
    GAppInfo* appinfo,
    GAsyncResult* result,
    GError** error
  );
  
}

Application Information interface, for operating system portability.

Interface members
g_iface 
GTypeInterface
 

The parent interface.
dup 
GAppInfo* (* dup) (
    GAppInfo* appinfo
  )
 No description available.
equal 
gboolean (* equal) (
    GAppInfo* appinfo1,
    GAppInfo* appinfo2
  )
 No description available.
get_id 
const char* (* get_id) (
    GAppInfo* appinfo
  )
 No description available.
get_name 
const char* (* get_name) (
    GAppInfo* appinfo
  )
 No description available.
get_description 
const char* (* get_description) (
    GAppInfo* appinfo
  )
 No description available.
get_executable 
const char* (* get_executable) (
    GAppInfo* appinfo
  )
 No description available.
get_icon 
GIcon* (* get_icon) (
    GAppInfo* appinfo
  )
 No description available.
launch 
gboolean (* launch) (
    GAppInfo* appinfo,
    GList* files,
    GAppLaunchContext* context,
    GError** error
  )
 No description available.
supports_uris 
gboolean (* supports_uris) (
    GAppInfo* appinfo
  )
 No description available.
supports_files 
gboolean (* supports_files) (
    GAppInfo* appinfo
  )
 No description available.
launch_uris 
gboolean (* launch_uris) (
    GAppInfo* appinfo,
    GList* uris,
    GAppLaunchContext* context,
    GError** error
  )
 No description available.
should_show 
gboolean (* should_show) (
    GAppInfo* appinfo
  )
 No description available.
set_as_default_for_type 
gboolean (* set_as_default_for_type) (
    GAppInfo* appinfo,
    const char* content_type,
    GError** error
  )
 No description available.
set_as_default_for_extension 
gboolean (* set_as_default_for_extension) (
    GAppInfo* appinfo,
    const char* extension,
    GError** error
  )
 No description available.
add_supports_type 
gboolean (* add_supports_type) (
    GAppInfo* appinfo,
    const char* content_type,
    GError** error
  )
 No description available.
can_remove_supports_type 
gboolean (* can_remove_supports_type) (
    GAppInfo* appinfo
  )
 No description available.
remove_supports_type 
gboolean (* remove_supports_type) (
    GAppInfo* appinfo,
    const char* content_type,
    GError** error
  )
 No description available.
can_delete 
gboolean (* can_delete) (
    GAppInfo* appinfo
  )
 No description available.
do_delete 
gboolean (* do_delete) (
    GAppInfo* appinfo
  )
 No description available.
get_commandline 
const char* (* get_commandline) (
    GAppInfo* appinfo
  )
 No description available.
get_display_name 
const char* (* get_display_name) (
    GAppInfo* appinfo
  )
 No description available.
set_as_last_used_for_type 
gboolean (* set_as_last_used_for_type) (
    GAppInfo* appinfo,
    const char* content_type,
    GError** error
  )
 No description available.
get_supported_types 
const char** (* get_supported_types) (
    GAppInfo* appinfo
  )
 No description available.
launch_uris_async 
void (* launch_uris_async) (
    GAppInfo* appinfo,
    GList* uris,
    GAppLaunchContext* context,
    GCancellable* cancellable,
    GAsyncReadyCallback callback,
    gpointer user_data
  )
 No description available.
launch_uris_finish 
gboolean (* launch_uris_finish) (
    GAppInfo* appinfo,
    GAsyncResult* result,
    GError** error
  )
 No description available.

Virtual methods

Gio.AppInfo.add_supports_type

Adds a content type to the application information to indicate the application is capable of opening files with the given content type.

Gio.AppInfo.can_delete

Obtains the information whether the GAppInfo can be deleted. See g_app_info_delete().

since: 2.20

Gio.AppInfo.can_remove_supports_type

Checks if a supported content type can be removed from an application.

Gio.AppInfo.do_delete

Tries to delete a GAppInfo.

since: 2.20

Gio.AppInfo.dup

Creates a duplicate of a GAppInfo.

Gio.AppInfo.equal

Checks if two GAppInfos are equal.

Gio.AppInfo.get_commandline

Gets the commandline with which the application will be started.

since: 2.20

Gio.AppInfo.get_description

Gets a human-readable description of an installed application.

Gio.AppInfo.get_display_name

Gets the display name of the application. The display name is often more descriptive to the user than the name itself.

since: 2.24

Gio.AppInfo.get_executable

Gets the executable’s name for the installed application.

Gio.AppInfo.get_icon

Gets the icon for the application.

Gio.AppInfo.get_id

Gets the ID of an application. An id is a string that identifies the application. The exact format of the id is platform dependent. For instance, on Unix this is the desktop file id from the xdg menu specification.

Gio.AppInfo.get_name

Gets the installed name of the application.

Gio.AppInfo.get_supported_types

Retrieves the list of content types that app_info claims to support. If this information is not provided by the environment, this function will return NULL. This function does not take in consideration associations added with g_app_info_add_supports_type(), but only those exported directly by the application.

since: 2.34

Gio.AppInfo.launch

Launches the application. Passes files to the launched application as arguments, using the optional context to get information about the details of the launcher (like what screen it is on). On error, error will be set accordingly.

Gio.AppInfo.launch_uris

Launches the application. This passes the uris to the launched application as arguments, using the optional context to get information about the details of the launcher (like what screen it is on). On error, error will be set accordingly. If the application only supports one URI per invocation as part of their command-line, multiple instances of the application will be spawned.

Gio.AppInfo.launch_uris_async

Async version of g_app_info_launch_uris().

since: 2.60

Gio.AppInfo.launch_uris_finish

Finishes a g_app_info_launch_uris_async() operation.

since: 2.60

Gio.AppInfo.remove_supports_type

Removes a supported type from an application, if possible.

Gio.AppInfo.set_as_default_for_extension

Sets the application as the default handler for the given file extension.

Gio.AppInfo.set_as_default_for_type

Sets the application as the default handler for a given type.

Gio.AppInfo.set_as_last_used_for_type

Sets the application as the last used application for a given type. This will make the application appear as first in the list returned by g_app_info_get_recommended_for_type(), regardless of the default application for that content type.

Gio.AppInfo.should_show

Checks if the application info should be shown in menus that list available applications.

Gio.AppInfo.supports_files

Checks if the application accepts files as arguments.

Gio.AppInfo.supports_uris

Checks if the application supports reading files and directories from URIs.