Copyright	Will Thompson Iñaki García Etxebarria and Jonas Platte
License	LGPL-2.1
Maintainer	Iñaki García Etxebarria
Safe Haskell	None
Language	Haskell2010

GI.Gio.Interfaces.AppInfo

Contents

Exported types
Methods

Description

AppInfo and 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 fileGetPath) when using appInfoLaunch even if the application requested an URI and not a POSIX path. For example for an 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 File constructors (since gvfs implements the Vfs extension point). As such, if the application needs to examine the URI, it needs to use fileGetUri or similar on File. In other words, an application cannot assume that the URI passed to e.g. fileNewForCommandlineArg is equal to the result of fileGetUri. 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.

Synopsis

newtype AppInfo = AppInfo (ManagedPtr AppInfo)
noAppInfo :: Maybe AppInfo
class (GObject o, IsDescendantOf AppInfo o) => IsAppInfo o
toAppInfo :: (MonadIO m, IsAppInfo o) => o -> m AppInfo
appInfoAddSupportsType :: (HasCallStack, MonadIO m, IsAppInfo a) => a -> Text -> m ()
appInfoCanDelete :: (HasCallStack, MonadIO m, IsAppInfo a) => a -> m Bool
appInfoCanRemoveSupportsType :: (HasCallStack, MonadIO m, IsAppInfo a) => a -> m Bool
appInfoCreateFromCommandline :: (HasCallStack, MonadIO m) => [Char] -> Maybe Text -> [AppInfoCreateFlags] -> m AppInfo
appInfoDelete :: (HasCallStack, MonadIO m, IsAppInfo a) => a -> m Bool
appInfoDup :: (HasCallStack, MonadIO m, IsAppInfo a) => a -> m AppInfo
appInfoEqual :: (HasCallStack, MonadIO m, IsAppInfo a, IsAppInfo b) => a -> b -> m Bool
appInfoGetAll :: (HasCallStack, MonadIO m) => m [AppInfo]
appInfoGetAllForType :: (HasCallStack, MonadIO m) => Text -> m [AppInfo]
appInfoGetCommandline :: (HasCallStack, MonadIO m, IsAppInfo a) => a -> m [Char]
appInfoGetDefaultForType :: (HasCallStack, MonadIO m) => Text -> Bool -> m AppInfo
appInfoGetDefaultForUriScheme :: (HasCallStack, MonadIO m) => Text -> m AppInfo
appInfoGetDescription :: (HasCallStack, MonadIO m, IsAppInfo a) => a -> m Text
appInfoGetDisplayName :: (HasCallStack, MonadIO m, IsAppInfo a) => a -> m Text
appInfoGetExecutable :: (HasCallStack, MonadIO m, IsAppInfo a) => a -> m [Char]
appInfoGetFallbackForType :: (HasCallStack, MonadIO m) => Text -> m [AppInfo]
appInfoGetIcon :: (HasCallStack, MonadIO m, IsAppInfo a) => a -> m Icon
appInfoGetId :: (HasCallStack, MonadIO m, IsAppInfo a) => a -> m Text
appInfoGetName :: (HasCallStack, MonadIO m, IsAppInfo a) => a -> m Text
appInfoGetRecommendedForType :: (HasCallStack, MonadIO m) => Text -> m [AppInfo]
appInfoGetSupportedTypes :: (HasCallStack, MonadIO m, IsAppInfo a) => a -> m [Text]
appInfoLaunch :: (HasCallStack, MonadIO m, IsAppInfo a, IsFile b, IsAppLaunchContext c) => a -> [b] -> Maybe c -> m ()
appInfoLaunchDefaultForUri :: (HasCallStack, MonadIO m, IsAppLaunchContext a) => Text -> Maybe a -> m ()
appInfoLaunchDefaultForUriAsync :: (HasCallStack, MonadIO m, IsAppLaunchContext a, IsCancellable b) => Text -> Maybe a -> Maybe b -> Maybe AsyncReadyCallback -> m ()
appInfoLaunchDefaultForUriFinish :: (HasCallStack, MonadIO m, IsAsyncResult a) => a -> m ()
appInfoLaunchUris :: (HasCallStack, MonadIO m, IsAppInfo a, IsAppLaunchContext b) => a -> [Text] -> Maybe b -> m ()
appInfoLaunchUrisAsync :: (HasCallStack, MonadIO m, IsAppInfo a, IsAppLaunchContext b, IsCancellable c) => a -> [Text] -> Maybe b -> Maybe c -> Maybe AsyncReadyCallback -> m ()
appInfoLaunchUrisFinish :: (HasCallStack, MonadIO m, IsAppInfo a, IsAsyncResult b) => a -> b -> m ()
appInfoRemoveSupportsType :: (HasCallStack, MonadIO m, IsAppInfo a) => a -> Text -> m ()
appInfoResetTypeAssociations :: (HasCallStack, MonadIO m) => Text -> m ()
appInfoSetAsDefaultForExtension :: (HasCallStack, MonadIO m, IsAppInfo a) => a -> [Char] -> m ()
appInfoSetAsDefaultForType :: (HasCallStack, MonadIO m, IsAppInfo a) => a -> Text -> m ()
appInfoSetAsLastUsedForType :: (HasCallStack, MonadIO m, IsAppInfo a) => a -> Text -> m ()
appInfoShouldShow :: (HasCallStack, MonadIO m, IsAppInfo a) => a -> m Bool
appInfoSupportsFiles :: (HasCallStack, MonadIO m, IsAppInfo a) => a -> m Bool
appInfoSupportsUris :: (HasCallStack, MonadIO m, IsAppInfo a) => a -> m Bool

Exported types

newtype AppInfo Source #

Memory-managed wrapper type.

Constructors

AppInfo (ManagedPtr AppInfo)

Instances

Instances details

Eq AppInfo Source #
Instance details Defined in GI.Gio.Interfaces.AppInfo Methods (==) :: AppInfo -> AppInfo -> Bool # (/=) :: AppInfo -> AppInfo -> Bool #
GObject AppInfo Source #
Instance details Defined in GI.Gio.Interfaces.AppInfo Methods gobjectType :: IO GType #
IsGValue AppInfo Source #	Convert `AppInfo` to and from `GValue` with `toGValue` and `fromGValue`.
Instance details Defined in GI.Gio.Interfaces.AppInfo Methods toGValue :: AppInfo -> IO GValue # fromGValue :: GValue -> IO AppInfo #
HasParentTypes AppInfo Source #
Instance details Defined in GI.Gio.Interfaces.AppInfo
type ParentTypes AppInfo Source #
Instance details Defined in GI.Gio.Interfaces.AppInfo type ParentTypes AppInfo = '[Object]

noAppInfo :: Maybe AppInfo Source #

A convenience alias for Nothing :: Maybe AppInfo.

class (GObject o, IsDescendantOf AppInfo o) => IsAppInfo o Source #

Type class for types which can be safely cast to AppInfo, for instance with toAppInfo.

Instances

Instances details

(GObject o, IsDescendantOf AppInfo o) => IsAppInfo o Source #
Instance details Defined in GI.Gio.Interfaces.AppInfo

toAppInfo :: (MonadIO m, IsAppInfo o) => o -> m AppInfo Source #

Cast to AppInfo, for types for which this is known to be safe. For general casts, use castTo.

Methods

Overloaded methods

addSupportsType

appInfoAddSupportsType Source #

Arguments

:: (HasCallStack, MonadIO m, IsAppInfo a)
=> a	`appinfo`: a `AppInfo`.
-> Text	`contentType`: a string.
-> m ()	(Can throw `GError`)

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

canDelete

appInfoCanDelete Source #

Arguments

:: (HasCallStack, MonadIO m, IsAppInfo a)
=> a	`appinfo`: a `AppInfo`
-> m Bool	Returns: `True` if `appinfo` can be deleted

Obtains the information whether the AppInfo can be deleted. See appInfoDelete.

Since: 2.20

canRemoveSupportsType

appInfoCanRemoveSupportsType Source #

Arguments

:: (HasCallStack, MonadIO m, IsAppInfo a)
=> a	`appinfo`: a `AppInfo`.
-> m Bool	Returns: `True` if it is possible to remove supported content types from a given `appinfo`, `False` if not.

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

createFromCommandline

appInfoCreateFromCommandline Source #

Arguments

:: (HasCallStack, MonadIO m)
=> [Char]	`commandline`: the commandline to use
-> Maybe Text	`applicationName`: the application name, or `Nothing` to use `commandline`
-> [AppInfoCreateFlags]	`flags`: flags that can specify details of the created `AppInfo`
-> m AppInfo	Returns: new `AppInfo` for given command. (Can throw `GError`)

Creates a new AppInfo from the given information.

Note that for commandline, the quoting rules of the Exec key of the freedesktop.org Desktop Entry Specification are applied. For example, if the commandline contains percent-encoded URIs, the percent-character must be doubled in order to prevent it from being swallowed by Exec key unquoting. See the specification for exact quoting rules.

delete

appInfoDelete Source #

Arguments

:: (HasCallStack, MonadIO m, IsAppInfo a)
=> a	`appinfo`: a `AppInfo`
-> m Bool	Returns: `True` if `appinfo` has been deleted

Tries to delete a AppInfo.

On some platforms, there may be a difference between user-defined GAppInfos which can be deleted, and system-wide ones which cannot. See appInfoCanDelete.

Since: 2.20

dup

appInfoDup Source #

Arguments

:: (HasCallStack, MonadIO m, IsAppInfo a)
=> a	`appinfo`: a `AppInfo`.
-> m AppInfo	Returns: a duplicate of `appinfo`.

Creates a duplicate of a AppInfo.

equal

appInfoEqual Source #

Arguments

:: (HasCallStack, MonadIO m, IsAppInfo a, IsAppInfo b)
=> a	`appinfo1`: the first `AppInfo`.
-> b	`appinfo2`: the second `AppInfo`.
-> m Bool	Returns: `True` if `appinfo1` is equal to `appinfo2`. `False` otherwise.

Checks if two GAppInfos are equal.

Note that the check <emphasis>may not</emphasis> compare each individual field, and only does an identity check. In case detecting changes in the contents is needed, program code must additionally compare relevant fields.

getAll

appInfoGetAll Source #

Arguments

:: (HasCallStack, MonadIO m)
=> m [AppInfo]	Returns: a newly allocated `List` of references to `GAppInfos`.

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

For desktop files, this includes applications that have NoDisplay=true set or are excluded from display by means of OnlyShowIn or NotShowIn. See appInfoShouldShow. The returned list does not include applications which have the Hidden key set.

getAllForType

appInfoGetAllForType Source #

Arguments

:: (HasCallStack, MonadIO m)
=> Text	`contentType`: the content type to find a `AppInfo` for
-> m [AppInfo]	Returns: `List` of `GAppInfos` for given `contentType` or `Nothing` on error.

Gets a list of all GAppInfos for a given content type, including the recommended and fallback GAppInfos. See appInfoGetRecommendedForType and appInfoGetFallbackForType.

getCommandline

appInfoGetCommandline Source #

Arguments

:: (HasCallStack, MonadIO m, IsAppInfo a)
=> a	`appinfo`: a `AppInfo`
-> m [Char]	Returns: a string containing the `appinfo`'s commandline, or `Nothing` if this information is not available

Gets the commandline with which the application will be started.

Since: 2.20

getDefaultForType

appInfoGetDefaultForType Source #

Arguments

:: (HasCallStack, MonadIO m)
=> Text	`contentType`: the content type to find a `AppInfo` for
-> Bool	`mustSupportUris`: if `True`, the `AppInfo` is expected to support URIs
-> m AppInfo	Returns: `AppInfo` for given `contentType` or `Nothing` on error.

Gets the default AppInfo for a given content type.

getDefaultForUriScheme

appInfoGetDefaultForUriScheme Source #

Arguments

:: (HasCallStack, MonadIO m)
=> Text	`uriScheme`: a string containing a URI scheme.
-> m AppInfo	Returns: `AppInfo` for given `uriScheme` or `Nothing` on error.

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".

getDescription

appInfoGetDescription Source #

Arguments

:: (HasCallStack, MonadIO m, IsAppInfo a)
=> a	`appinfo`: a `AppInfo`.
-> m Text	Returns: a string containing a description of the application `appinfo`, or `Nothing` if none.

Gets a human-readable description of an installed application.

getDisplayName

appInfoGetDisplayName Source #

Arguments

:: (HasCallStack, MonadIO m, IsAppInfo a)
=> a	`appinfo`: a `AppInfo`.
-> m Text	Returns: the display name of the application for `appinfo`, or the name if no display name is available.

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

Since: 2.24

getExecutable

appInfoGetExecutable Source #

Arguments

:: (HasCallStack, MonadIO m, IsAppInfo a)
=> a	`appinfo`: a `AppInfo`
-> m [Char]	Returns: a string containing the `appinfo`'s application binaries name

Gets the executable's name for the installed application.

getFallbackForType

appInfoGetFallbackForType Source #

Arguments

:: (HasCallStack, MonadIO m)
=> Text	`contentType`: the content type to find a `AppInfo` for
-> m [AppInfo]	Returns: `List` of `GAppInfos` for given `contentType` or `Nothing` on error.

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

getIcon

appInfoGetIcon Source #

Arguments

:: (HasCallStack, MonadIO m, IsAppInfo a)
=> a	`appinfo`: a `AppInfo`.
-> m Icon	Returns: the default `Icon` for `appinfo` or `Nothing` if there is no default icon.

Gets the icon for the application.

getId

appInfoGetId Source #

Arguments

:: (HasCallStack, MonadIO m, IsAppInfo a)
=> a	`appinfo`: a `AppInfo`.
-> m Text	Returns: a string containing the application's 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.

Note that the returned ID may be Nothing, depending on how the appinfo has been constructed.

getName

appInfoGetName Source #

Arguments

:: (HasCallStack, MonadIO m, IsAppInfo a)
=> a	`appinfo`: a `AppInfo`.
-> m Text	Returns: the name of the application for `appinfo`.

Gets the installed name of the application.

getRecommendedForType

appInfoGetRecommendedForType Source #

Arguments

:: (HasCallStack, MonadIO m)
=> Text	`contentType`: the content type to find a `AppInfo` for
-> m [AppInfo]	Returns: `List` of `GAppInfos` for given `contentType` or `Nothing` on error.

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 appInfoSetAsLastUsedForType has been called.

Since: 2.28

getSupportedTypes

appInfoGetSupportedTypes Source #

Arguments

:: (HasCallStack, MonadIO m, IsAppInfo a)
=> a	`appinfo`: a `AppInfo` that can handle files
-> m [Text]	Returns: a list of content types.

Retrieves the list of content types that appInfo claims to support. If this information is not provided by the environment, this function will return Nothing. This function does not take in consideration associations added with appInfoAddSupportsType, but only those exported directly by the application.

Since: 2.34

launch

appInfoLaunch Source #

Arguments

:: (HasCallStack, MonadIO m, IsAppInfo a, IsFile b, IsAppLaunchContext c)
=> a	`appinfo`: a `AppInfo`
-> [b]	`files`: a `List` of `File` objects
-> Maybe c	`context`: a `AppLaunchContext` or `Nothing`
-> m ()	(Can throw `GError`)

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.

To launch the application without arguments pass a Nothing files list.

Note that even if the launch is successful the application launched can fail to start if it runs into problems during startup. There is no way to detect this.

Some URIs can be changed when passed through a GFile (for instance unsupported URIs with strange formats like mailto:), so if you have a textual URI you want to pass in as argument, consider using appInfoLaunchUris instead.

The launched application inherits the environment of the launching process, but it can be modified with appLaunchContextSetenv and appLaunchContextUnsetenv.

On UNIX, this function sets the GIO_LAUNCHED_DESKTOP_FILE environment variable with the path of the launched desktop file and GIO_LAUNCHED_DESKTOP_FILE_PID to the process id of the launched process. This can be used to ignore GIO_LAUNCHED_DESKTOP_FILE, should it be inherited by further processes. The DISPLAY and DESKTOP_STARTUP_ID environment variables are also set, based on information provided in context.

launchDefaultForUri

appInfoLaunchDefaultForUri Source #

Arguments

:: (HasCallStack, MonadIO m, IsAppLaunchContext a)
=> Text	`uri`: the uri to show
-> Maybe a	`context`: an optional `AppLaunchContext`
-> m ()	(Can throw `GError`)

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.

The D-Bus–activated applications don't have to be started if your application terminates too soon after this function. To prevent this, use appInfoLaunchDefaultForUri instead.

launchDefaultForUriAsync

appInfoLaunchDefaultForUriAsync Source #

Arguments

:: (HasCallStack, MonadIO m, IsAppLaunchContext a, IsCancellable b)
=> Text	`uri`: the uri to show
-> Maybe a	`context`: an optional `AppLaunchContext`
-> Maybe b	`cancellable`: a `Cancellable`
-> Maybe AsyncReadyCallback	`callback`: a `AsyncReadyCallback` to call when the request is done
-> m ()

Async version of appInfoLaunchDefaultForUri.

This version is useful if you are interested in receiving error information in the case where the application is sandboxed and the portal may present an application chooser dialog to the user.

This is also useful if you want to be sure that the D-Bus–activated applications are really started before termination and if you are interested in receiving error information from their activation.

Since: 2.50

launchDefaultForUriFinish

appInfoLaunchDefaultForUriFinish Source #

Arguments

:: (HasCallStack, MonadIO m, IsAsyncResult a)
=> a	`result`: a `AsyncResult`
-> m ()	(Can throw `GError`)

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

Since: 2.50

launchUris

appInfoLaunchUris Source #

Arguments

:: (HasCallStack, MonadIO m, IsAppInfo a, IsAppLaunchContext b)
=> a	`appinfo`: a `AppInfo`
-> [Text]	`uris`: a `List` containing URIs to launch.
-> Maybe b	`context`: a `AppLaunchContext` or `Nothing`
-> m ()	(Can throw `GError`)

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.

To launch the application without arguments pass a Nothing uris list.

Note that even if the launch is successful the application launched can fail to start if it runs into problems during startup. There is no way to detect this.

launchUrisAsync

appInfoLaunchUrisAsync Source #

Arguments

:: (HasCallStack, MonadIO m, IsAppInfo a, IsAppLaunchContext b, IsCancellable c)
=> a	`appinfo`: a `AppInfo`
-> [Text]	`uris`: a `List` containing URIs to launch.
-> Maybe b	`context`: a `AppLaunchContext` or `Nothing`
-> Maybe c	`cancellable`: a `Cancellable`
-> Maybe AsyncReadyCallback	`callback`: a `AsyncReadyCallback` to call when the request is done
-> m ()

Async version of appInfoLaunchUris.

The callback is invoked immediately after the application launch, but it waits for activation in case of D-Bus–activated applications and also provides extended error information for sandboxed applications, see notes for appInfoLaunchDefaultForUriAsync.

Since: 2.60

launchUrisFinish

appInfoLaunchUrisFinish Source #

Arguments

:: (HasCallStack, MonadIO m, IsAppInfo a, IsAsyncResult b)
=> a	`appinfo`: a `AppInfo`
-> b	`result`: a `AsyncResult`
-> m ()	(Can throw `GError`)

Finishes a appInfoLaunchUrisAsync operation.

Since: 2.60

removeSupportsType

appInfoRemoveSupportsType Source #

Arguments

:: (HasCallStack, MonadIO m, IsAppInfo a)
=> a	`appinfo`: a `AppInfo`.
-> Text	`contentType`: a string.
-> m ()	(Can throw `GError`)

Removes a supported type from an application, if possible.

resetTypeAssociations

appInfoResetTypeAssociations Source #

Arguments

:: (HasCallStack, MonadIO m)
=> Text	`contentType`: a content type
-> m ()

Removes all changes to the type associations done by appInfoSetAsDefaultForType, appInfoSetAsDefaultForExtension, appInfoAddSupportsType or appInfoRemoveSupportsType.

Since: 2.20

setAsDefaultForExtension

appInfoSetAsDefaultForExtension Source #

Arguments

:: (HasCallStack, MonadIO m, IsAppInfo a)
=> a	`appinfo`: a `AppInfo`.
-> [Char]	`extension`: a string containing the file extension (without the dot).
-> m ()	(Can throw `GError`)

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

setAsDefaultForType

appInfoSetAsDefaultForType Source #

Arguments

:: (HasCallStack, MonadIO m, IsAppInfo a)
=> a	`appinfo`: a `AppInfo`.
-> Text	`contentType`: the content type.
-> m ()	(Can throw `GError`)

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

setAsLastUsedForType

appInfoSetAsLastUsedForType Source #

Arguments

:: (HasCallStack, MonadIO m, IsAppInfo a)
=> a	`appinfo`: a `AppInfo`.
-> Text	`contentType`: the content type.
-> m ()	(Can throw `GError`)

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 appInfoGetRecommendedForType, regardless of the default application for that content type.

shouldShow

appInfoShouldShow Source #

Arguments

:: (HasCallStack, MonadIO m, IsAppInfo a)
=> a	`appinfo`: a `AppInfo`.
-> m Bool	Returns: `True` if the `appinfo` should be shown, `False` otherwise.

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

supportsFiles

appInfoSupportsFiles Source #

Arguments

:: (HasCallStack, MonadIO m, IsAppInfo a)
=> a	`appinfo`: a `AppInfo`.
-> m Bool	Returns: `True` if the `appinfo` supports files.

Checks if the application accepts files as arguments.

supportsUris

appInfoSupportsUris Source #

Arguments

:: (HasCallStack, MonadIO m, IsAppInfo a)
=> a	`appinfo`: a `AppInfo`.
-> m Bool	Returns: `True` if the `appinfo` supports URIs.

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