AppInfoIF

GAppInfo and gio.AppLaunchContext 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.avi will 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 gio.Vfs 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.

interface AppInfoIF {

GAppInfo* getAppInfoStruct(bool transferOwnership);

void* getStruct();

static GType getType();

static AppInfoIF createFromCommandline(string commandline, string applicationName, GAppInfoCreateFlags flags);

static ListG getAll();

static ListG getAllForType(string contentType);

static AppInfoIF getDefaultForType(string contentType, bool mustSupportUris);

static AppInfoIF getDefaultForUriScheme(string uriScheme);

static ListG getFallbackForType(string contentType);

static ListG getRecommendedForType(string contentType);

static bool launchDefaultForUri(string uri, AppLaunchContext context);

static void launchDefaultForUriAsync(string uri, AppLaunchContext context, Cancellable cancellable, GAsyncReadyCallback callback, void* userData);

static bool launchDefaultForUriFinish(AsyncResultIF result);

static void resetTypeAssociations(string contentType);

bool addSupportsType(string contentType);

bool canDelete();

bool canRemoveSupportsType();

bool delete_();

AppInfoIF dup();

bool equal(AppInfoIF appinfo2);

string getCommandline();

string getDescription();

string getDisplayName();

string getExecutable();

IconIF getIcon();

string getId();

string getName();

string[] getSupportedTypes();

bool launch(ListG files, AppLaunchContext context);

bool launchUris(ListG uris, AppLaunchContext context);

void launchUrisAsync(ListG uris, AppLaunchContext context, Cancellable cancellable, GAsyncReadyCallback callback, void* userData);

bool launchUrisFinish(AsyncResultIF result);

bool removeSupportsType(string contentType);

bool setAsDefaultForExtension(string extension);

bool setAsDefaultForType(string contentType);

bool setAsLastUsedForType(string contentType);

bool shouldShow();

bool supportsFiles();

bool supportsUris();

}

Members

Functions

addSupportsType bool addSupportsType(string contentType): Adds a content type to the application information to indicate the application is capable of opening files with the given content type.
canDelete bool canDelete(): Obtains the information whether the GAppInfo can be deleted. See g_app_info_delete().
canRemoveSupportsType bool canRemoveSupportsType(): Checks if a supported content type can be removed from an application.
delete_ bool delete_(): Tries to delete a GAppInfo
dup AppInfoIF dup(): Creates a duplicate of a GAppInfo
equal bool equal(AppInfoIF appinfo2): Checks if two GAppInfos are equal.
getAppInfoStruct GAppInfo* getAppInfoStruct(bool transferOwnership): Get the main Gtk struct
getCommandline string getCommandline(): Gets the commandline with which the application will be started.
getDescription string getDescription(): Gets a human-readable description of an installed application.
getDisplayName string getDisplayName(): Gets the display name of the application. The display name is often more descriptive to the user than the name itself.
getExecutable string getExecutable(): Gets the executable's name for the installed application.
getIcon IconIF getIcon(): Gets the icon for the application.
getId string getId(): 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.
getName string getName(): Gets the installed name of the application.
getStruct void* getStruct(): the main Gtk struct as a void*
getSupportedTypes string[] getSupportedTypes(): 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.
launch bool launch(ListG files, AppLaunchContext context): 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.
launchUris bool launchUris(ListG uris, AppLaunchContext context): 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.
launchUrisAsync void launchUrisAsync(ListG uris, AppLaunchContext context, Cancellable cancellable, GAsyncReadyCallback callback, void* userData): Async version of g_app_info_launch_uris().
launchUrisFinish bool launchUrisFinish(AsyncResultIF result): Finishes a g_app_info_launch_uris_async() operation.
removeSupportsType bool removeSupportsType(string contentType): Removes a supported type from an application, if possible.
setAsDefaultForExtension bool setAsDefaultForExtension(string extension): Sets the application as the default handler for the given file extension.
setAsDefaultForType bool setAsDefaultForType(string contentType): Sets the application as the default handler for a given type.
setAsLastUsedForType bool setAsLastUsedForType(string contentType): 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.
shouldShow bool shouldShow(): Checks if the application info should be shown in menus that list available applications.
supportsFiles bool supportsFiles(): Checks if the application accepts files as arguments.
supportsUris bool supportsUris(): Checks if the application supports reading files and directories from URIs.

Static functions

createFromCommandline AppInfoIF createFromCommandline(string commandline, string applicationName, GAppInfoCreateFlags flags): Creates a new GAppInfo from the given information.
getAll ListG getAll(): Gets a list of all of the applications currently registered on this system.
getAllForType ListG getAllForType(string contentType): 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().
getDefaultForType AppInfoIF getDefaultForType(string contentType, bool mustSupportUris): Gets the default GAppInfo for a given content type.
getDefaultForUriScheme AppInfoIF getDefaultForUriScheme(string uriScheme): 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".
getFallbackForType ListG getFallbackForType(string contentType): 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.
getRecommendedForType ListG getRecommendedForType(string contentType): 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.
getType GType getType()
launchDefaultForUri bool launchDefaultForUri(string uri, AppLaunchContext context): 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.
launchDefaultForUriAsync void launchDefaultForUriAsync(string uri, AppLaunchContext context, Cancellable cancellable, GAsyncReadyCallback callback, void* userData): Async version of g_app_info_launch_default_for_uri().
launchDefaultForUriFinish bool launchDefaultForUriFinish(AsyncResultIF result): Finishes an asynchronous launch-default-for-uri operation.
resetTypeAssociations void resetTypeAssociations(string contentType): 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().

gio AppInfoIF interfaces

AppInfoIF