Copyright	Will Thompson Iñaki García Etxebarria and Jonas Platte
License	LGPL-2.1
Maintainer	Iñaki García Etxebarria (garetxe@gmail.com)
Safe Haskell	None
Language	Haskell2010

GI.Gio.Interfaces.Volume

Contents

Exported types
Methods
Signals
- changed
- removed

Description

The Volume interface represents user-visible objects that can be mounted. Note, when porting from GnomeVFS, Volume is the moral equivalent of GnomeVFSDrive.

Mounting a Volume instance is an asynchronous operation. For more information about asynchronous operations, see AsyncResult and Task. To mount a Volume, first call volumeMount with (at least) the Volume instance, optionally a MountOperation object and a AsyncReadyCallback.

Typically, one will only want to pass Nothing for the MountOperation if automounting all volumes when a desktop session starts since it's not desirable to put up a lot of dialogs asking for credentials.

The callback will be fired when the operation has resolved (either with success or failure), and a GAsyncReady structure will be passed to the callback. That callback should then call volumeMountFinish with the Volume instance and the GAsyncReady data to see if the operation was completed successfully. If an error is present when volumeMountFinish is called, then it will be filled with any error information.

# {volume-identifier}

It is sometimes necessary to directly access the underlying operating system object behind a volume (e.g. for passing a volume to an application via the commandline). For this purpose, GIO allows to obtain an 'identifier' for the volume. There can be different kinds of identifiers, such as Hal UDIs, filesystem labels, traditional Unix devices (e.g. /dev/sda2), UUIDs. GIO uses predefined strings as names for the different kinds of identifiers: VOLUME_IDENTIFIER_KIND_HAL_UDI, VOLUME_IDENTIFIER_KIND_LABEL, etc. Use volumeGetIdentifier to obtain an identifier for a volume.

Note that VOLUME_IDENTIFIER_KIND_HAL_UDI will only be available when the gvfs hal volume monitor is in use. Other volume monitors will generally be able to provide the VOLUME_IDENTIFIER_KIND_UNIX_DEVICE identifier, which can be used to obtain a hal device by means of libhal_manager_find_device_string_match().

Synopsis

newtype Volume = Volume (ManagedPtr Volume)
noVolume :: Maybe Volume
class GObject o => IsVolume o
toVolume :: (MonadIO m, IsVolume o) => o -> m Volume
volumeCanEject :: (HasCallStack, MonadIO m, IsVolume a) => a -> m Bool
volumeCanMount :: (HasCallStack, MonadIO m, IsVolume a) => a -> m Bool
volumeEject :: (HasCallStack, MonadIO m, IsVolume a, IsCancellable b) => a -> [MountUnmountFlags] -> Maybe b -> Maybe AsyncReadyCallback -> m ()
volumeEjectFinish :: (HasCallStack, MonadIO m, IsVolume a, IsAsyncResult b) => a -> b -> m ()
volumeEjectWithOperation :: (HasCallStack, MonadIO m, IsVolume a, IsMountOperation b, IsCancellable c) => a -> [MountUnmountFlags] -> Maybe b -> Maybe c -> Maybe AsyncReadyCallback -> m ()
volumeEjectWithOperationFinish :: (HasCallStack, MonadIO m, IsVolume a, IsAsyncResult b) => a -> b -> m ()
volumeEnumerateIdentifiers :: (HasCallStack, MonadIO m, IsVolume a) => a -> m [Text]
volumeGetActivationRoot :: (HasCallStack, MonadIO m, IsVolume a) => a -> m (Maybe File)
volumeGetDrive :: (HasCallStack, MonadIO m, IsVolume a) => a -> m Drive
volumeGetIcon :: (HasCallStack, MonadIO m, IsVolume a) => a -> m Icon
volumeGetIdentifier :: (HasCallStack, MonadIO m, IsVolume a) => a -> Text -> m Text
volumeGetMount :: (HasCallStack, MonadIO m, IsVolume a) => a -> m (Maybe Mount)
volumeGetName :: (HasCallStack, MonadIO m, IsVolume a) => a -> m Text
volumeGetSortKey :: (HasCallStack, MonadIO m, IsVolume a) => a -> m Text
volumeGetSymbolicIcon :: (HasCallStack, MonadIO m, IsVolume a) => a -> m Icon
volumeGetUuid :: (HasCallStack, MonadIO m, IsVolume a) => a -> m Text
volumeMount :: (HasCallStack, MonadIO m, IsVolume a, IsMountOperation b, IsCancellable c) => a -> [MountMountFlags] -> Maybe b -> Maybe c -> Maybe AsyncReadyCallback -> m ()
volumeMountFinish :: (HasCallStack, MonadIO m, IsVolume a, IsAsyncResult b) => a -> b -> m ()
volumeShouldAutomount :: (HasCallStack, MonadIO m, IsVolume a) => a -> m Bool
type C_VolumeChangedCallback = Ptr () -> Ptr () -> IO ()
type VolumeChangedCallback = IO ()
afterVolumeChanged :: (IsVolume a, MonadIO m) => a -> VolumeChangedCallback -> m SignalHandlerId
genClosure_VolumeChanged :: VolumeChangedCallback -> IO Closure
mk_VolumeChangedCallback :: C_VolumeChangedCallback -> IO (FunPtr C_VolumeChangedCallback)
noVolumeChangedCallback :: Maybe VolumeChangedCallback
onVolumeChanged :: (IsVolume a, MonadIO m) => a -> VolumeChangedCallback -> m SignalHandlerId
wrap_VolumeChangedCallback :: VolumeChangedCallback -> C_VolumeChangedCallback
type C_VolumeRemovedCallback = Ptr () -> Ptr () -> IO ()
type VolumeRemovedCallback = IO ()
afterVolumeRemoved :: (IsVolume a, MonadIO m) => a -> VolumeRemovedCallback -> m SignalHandlerId
genClosure_VolumeRemoved :: VolumeRemovedCallback -> IO Closure
mk_VolumeRemovedCallback :: C_VolumeRemovedCallback -> IO (FunPtr C_VolumeRemovedCallback)
noVolumeRemovedCallback :: Maybe VolumeRemovedCallback
onVolumeRemoved :: (IsVolume a, MonadIO m) => a -> VolumeRemovedCallback -> m SignalHandlerId
wrap_VolumeRemovedCallback :: VolumeRemovedCallback -> C_VolumeRemovedCallback

Exported types

newtype Volume Source #

Memory-managed wrapper type.

Constructors

Volume (ManagedPtr Volume)

Instances

GObject Volume Source #
Instance details Defined in GI.Gio.Interfaces.Volume Methods gobjectType :: Volume -> IO GType #
IsObject Volume Source #
Instance details Defined in GI.Gio.Interfaces.Volume
IsVolume Volume Source #
Instance details Defined in GI.Gio.Interfaces.Volume

noVolume :: Maybe Volume Source #

A convenience alias for Nothing :: Maybe Volume.

class GObject o => IsVolume o Source #

Type class for types which can be safely cast to Volume, for instance with toVolume.

Instances

(GObject a, (UnknownAncestorError Volume a :: Constraint)) => IsVolume a Source #
Instance details Defined in GI.Gio.Interfaces.Volume
IsVolume Volume Source #
Instance details Defined in GI.Gio.Interfaces.Volume

toVolume :: (MonadIO m, IsVolume o) => o -> m Volume Source #

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

Methods

canEject

volumeCanEject Source #

Arguments

:: (HasCallStack, MonadIO m, IsVolume a)
=> a	`volume`: a `Volume`
-> m Bool	Returns: `True` if the `volume` can be ejected. `False` otherwise

Checks if a volume can be ejected.

canMount

volumeCanMount Source #

Arguments

:: (HasCallStack, MonadIO m, IsVolume a)
=> a	`volume`: a `Volume`
-> m Bool	Returns: `True` if the `volume` can be mounted. `False` otherwise

Checks if a volume can be mounted.

eject

volumeEject Source #

Arguments

:: (HasCallStack, MonadIO m, IsVolume a, IsCancellable b)
=> a	`volume`: a `Volume`
-> [MountUnmountFlags]	`flags`: flags affecting the unmount if required for eject
-> Maybe b	`cancellable`: optional `Cancellable` object, `Nothing` to ignore
-> Maybe AsyncReadyCallback	`callback`: a `AsyncReadyCallback`, or `Nothing`
-> m ()

Deprecated: (Since version 2.22)Use volumeEjectWithOperation instead.

Ejects a volume. This is an asynchronous operation, and is finished by calling volumeEjectFinish with the volume and AsyncResult returned in the callback.

ejectFinish

volumeEjectFinish Source #

Arguments

:: (HasCallStack, MonadIO m, IsVolume a, IsAsyncResult b)
=> a	`volume`: pointer to a `Volume`
-> b	`result`: a `AsyncResult`
-> m ()	(Can throw `GError`)

Deprecated: (Since version 2.22)Use volumeEjectWithOperationFinish instead.

Finishes ejecting a volume. If any errors occurred during the operation, error will be set to contain the errors and False will be returned.

ejectWithOperation

volumeEjectWithOperation Source #

Arguments

:: (HasCallStack, MonadIO m, IsVolume a, IsMountOperation b, IsCancellable c)
=> a	`volume`: a `Volume`
-> [MountUnmountFlags]	`flags`: flags affecting the unmount if required for eject
-> Maybe b	`mountOperation`: a `MountOperation` or `Nothing` to avoid user interaction
-> Maybe c	`cancellable`: optional `Cancellable` object, `Nothing` to ignore
-> Maybe AsyncReadyCallback	`callback`: a `AsyncReadyCallback`, or `Nothing`
-> m ()

Ejects a volume. This is an asynchronous operation, and is finished by calling volumeEjectWithOperationFinish with the volume and AsyncResult data returned in the callback.

Since: 2.22

ejectWithOperationFinish

volumeEjectWithOperationFinish Source #

Arguments

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

Finishes ejecting a volume. If any errors occurred during the operation, error will be set to contain the errors and False will be returned.

Since: 2.22

enumerateIdentifiers

volumeEnumerateIdentifiers Source #

Arguments

:: (HasCallStack, MonadIO m, IsVolume a)
=> a	`volume`: a `Volume`
-> m [Text]	Returns: a `Nothing`-terminated array of strings containing kinds of identifiers. Use `strfreev` to free.

Gets the kinds of [identifiers][volume-identifier] that volume has. Use volumeGetIdentifier to obtain the identifiers themselves.

getActivationRoot

volumeGetActivationRoot Source #

Arguments

:: (HasCallStack, MonadIO m, IsVolume a)
=> a	`volume`: a `Volume`
-> m (Maybe File)	Returns: the activation root of `volume` or `Nothing`. Use `objectUnref` to free.

Gets the activation root for a Volume if it is known ahead of mount time. Returns Nothing otherwise. If not Nothing and if volume is mounted, then the result of mountGetRoot on the Mount object obtained from volumeGetMount will always either be equal or a prefix of what this function returns. In other words, in code

C code

 GMount *mount;
 GFile *mount_root
 GFile *volume_activation_root;

 mount = g_volume_get_mount (volume); // mounted, so never NULL
 mount_root = g_mount_get_root (mount);
 volume_activation_root = g_volume_get_activation_root (volume); // assume not NULL

then the expression

C code

 (g_file_has_prefix (volume_activation_root, mount_root) ||
  g_file_equal (volume_activation_root, mount_root))

will always be True.

Activation roots are typically used in VolumeMonitor implementations to find the underlying mount to shadow, see mountIsShadowed for more details.

Since: 2.18

getDrive

volumeGetDrive Source #

Arguments

:: (HasCallStack, MonadIO m, IsVolume a)
=> a	`volume`: a `Volume`
-> m Drive	Returns: a `Drive` or `Nothing` if `volume` is not associated with a drive. The returned object should be unreffed with `objectUnref` when no longer needed.

Gets the drive for the volume.

getIcon

volumeGetIcon Source #

Arguments

:: (HasCallStack, MonadIO m, IsVolume a)
=> a	`volume`: a `Volume`
-> m Icon	Returns: a `Icon`. The returned object should be unreffed with `objectUnref` when no longer needed.

Gets the icon for volume.

getIdentifier

volumeGetIdentifier Source #

Arguments

:: (HasCallStack, MonadIO m, IsVolume a)
=> a	`volume`: a `Volume`
-> Text	`kind`: the kind of identifier to return
-> m Text	Returns: a newly allocated string containing the requested identfier, or `Nothing` if the `Volume` doesn't have this kind of identifier

Gets the identifier of the given kind for volume. See the [introduction][volume-identifier] for more information about volume identifiers.

getMount

volumeGetMount Source #

Arguments

:: (HasCallStack, MonadIO m, IsVolume a)
=> a	`volume`: a `Volume`
-> m (Maybe Mount)	Returns: a `Mount` or `Nothing` if `volume` isn't mounted. The returned object should be unreffed with `objectUnref` when no longer needed.

Gets the mount for the volume.

getName

volumeGetName Source #

Arguments

:: (HasCallStack, MonadIO m, IsVolume a)
=> a	`volume`: a `Volume`
-> m Text	Returns: the name for the given `volume`. The returned string should be freed with `free` when no longer needed.

Gets the name of volume.

getSortKey

volumeGetSortKey Source #

Arguments

:: (HasCallStack, MonadIO m, IsVolume a)
=> a	`volume`: a `Volume`
-> m Text	Returns: Sorting key for `volume` or `Nothing` if no such key is available

Gets the sort key for volume, if any.

Since: 2.32

getSymbolicIcon

volumeGetSymbolicIcon Source #

Arguments

:: (HasCallStack, MonadIO m, IsVolume a)
=> a	`volume`: a `Volume`
-> m Icon	Returns: a `Icon`. The returned object should be unreffed with `objectUnref` when no longer needed.

Gets the symbolic icon for volume.

Since: 2.34

getUuid

volumeGetUuid Source #

Arguments

:: (HasCallStack, MonadIO m, IsVolume a)
=> a	`volume`: a `Volume`
-> m Text	Returns: the UUID for `volume` or `Nothing` if no UUID can be computed. The returned string should be freed with `free` when no longer needed.

Gets the UUID for the volume. The reference is typically based on the file system UUID for the volume in question and should be considered an opaque string. Returns Nothing if there is no UUID available.

mount

volumeMount Source #

Arguments

:: (HasCallStack, MonadIO m, IsVolume a, IsMountOperation b, IsCancellable c)
=> a	`volume`: a `Volume`
-> [MountMountFlags]	`flags`: flags affecting the operation
-> Maybe b	`mountOperation`: a `MountOperation` or `Nothing` to avoid user interaction
-> Maybe c	`cancellable`: optional `Cancellable` object, `Nothing` to ignore
-> Maybe AsyncReadyCallback	`callback`: a `AsyncReadyCallback`, or `Nothing`
-> m ()

Mounts a volume. This is an asynchronous operation, and is finished by calling volumeMountFinish with the volume and AsyncResult returned in the callback.

mountFinish

volumeMountFinish Source #

Arguments

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

Finishes mounting a volume. If any errors occurred during the operation, error will be set to contain the errors and False will be returned.

If the mount operation succeeded, volumeGetMount on volume is guaranteed to return the mount right after calling this function; there's no need to listen for the 'mount-added' signal on VolumeMonitor.

shouldAutomount

volumeShouldAutomount Source #

Arguments

:: (HasCallStack, MonadIO m, IsVolume a)
=> a	`volume`: a `Volume`
-> m Bool	Returns: `True` if the volume should be automatically mounted

Returns whether the volume should be automatically mounted.

Signals

changed

type C_VolumeChangedCallback = Ptr () -> Ptr () -> IO () Source #

Type for the callback on the (unwrapped) C side.

type VolumeChangedCallback = IO () Source #

Emitted when the volume has been changed.

afterVolumeChanged :: (IsVolume a, MonadIO m) => a -> VolumeChangedCallback -> m SignalHandlerId Source #

Connect a signal handler for the “changed” signal, to be run after the default handler. When overloading is enabled, this is equivalent to

after volume #changed callback

genClosure_VolumeChanged :: VolumeChangedCallback -> IO Closure Source #

Wrap the callback into a Closure.

mk_VolumeChangedCallback :: C_VolumeChangedCallback -> IO (FunPtr C_VolumeChangedCallback) Source #

Generate a function pointer callable from C code, from a C_VolumeChangedCallback.

noVolumeChangedCallback :: Maybe VolumeChangedCallback Source #

A convenience synonym for Nothing :: Maybe VolumeChangedCallback.

onVolumeChanged :: (IsVolume a, MonadIO m) => a -> VolumeChangedCallback -> m SignalHandlerId Source #

Connect a signal handler for the “changed” signal, to be run before the default handler. When overloading is enabled, this is equivalent to

on volume #changed callback

wrap_VolumeChangedCallback :: VolumeChangedCallback -> C_VolumeChangedCallback Source #

Wrap a VolumeChangedCallback into a C_VolumeChangedCallback.

removed

type C_VolumeRemovedCallback = Ptr () -> Ptr () -> IO () Source #

Type for the callback on the (unwrapped) C side.

type VolumeRemovedCallback = IO () Source #

This signal is emitted when the Volume have been removed. If the recipient is holding references to the object they should release them so the object can be finalized.

afterVolumeRemoved :: (IsVolume a, MonadIO m) => a -> VolumeRemovedCallback -> m SignalHandlerId Source #

Connect a signal handler for the “removed” signal, to be run after the default handler. When overloading is enabled, this is equivalent to

after volume #removed callback

genClosure_VolumeRemoved :: VolumeRemovedCallback -> IO Closure Source #

Wrap the callback into a Closure.

mk_VolumeRemovedCallback :: C_VolumeRemovedCallback -> IO (FunPtr C_VolumeRemovedCallback) Source #

Generate a function pointer callable from C code, from a C_VolumeRemovedCallback.

noVolumeRemovedCallback :: Maybe VolumeRemovedCallback Source #

A convenience synonym for Nothing :: Maybe VolumeRemovedCallback.

onVolumeRemoved :: (IsVolume a, MonadIO m) => a -> VolumeRemovedCallback -> m SignalHandlerId Source #

Connect a signal handler for the “removed” signal, to be run before the default handler. When overloading is enabled, this is equivalent to

on volume #removed callback

wrap_VolumeRemovedCallback :: VolumeRemovedCallback -> C_VolumeRemovedCallback Source #

Wrap a VolumeRemovedCallback into a C_VolumeRemovedCallback.