Interface
GioAppInfo
Description
interface Gio.AppInfo : GObject.Object
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 totem
U` 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 as
mailto:`, 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
.
Functions
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_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_get_commandline
Gets the commandline with which the application will be started.
since: 2.20
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_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_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_set_as_default_for_extension
Sets the application as the default handler for the given file extension.
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_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 |
|
The parent interface. |
|
dup |
|
No description available. | |
equal |
|
No description available. | |
get_id |
|
No description available. | |
get_name |
|
No description available. | |
get_description |
|
No description available. | |
get_executable |
|
No description available. | |
get_icon |
|
No description available. | |
launch |
|
No description available. | |
supports_uris |
|
No description available. | |
supports_files |
|
No description available. | |
launch_uris |
|
No description available. | |
should_show |
|
No description available. | |
set_as_default_for_type |
|
No description available. | |
set_as_default_for_extension |
|
No description available. | |
add_supports_type |
|
No description available. | |
can_remove_supports_type |
|
No description available. | |
remove_supports_type |
|
No description available. | |
can_delete |
|
No description available. | |
do_delete |
|
No description available. | |
get_commandline |
|
No description available. | |
get_display_name |
|
No description available. | |
set_as_last_used_for_type |
|
No description available. | |
get_supported_types |
|
No description available. | |
launch_uris_async |
|
No description available. | |
launch_uris_finish |
|
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.get_commandline
Gets the commandline with which the application will be started.
since: 2.20
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_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_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.set_as_default_for_extension
Sets the application as the default handler for the given file extension.
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_uris
Checks if the application supports reading files and directories from URIs.