glib/gio/gvolume.c
Matthias Clasen e2ba37ceb3 Document new api
svn path=/trunk/; revision=6397
2008-01-28 17:21:34 +00:00

479 lines
12 KiB
C

/* GIO - GLib Input, Output and Streaming Library
*
* Copyright (C) 2006-2007 Red Hat, Inc.
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2 of the License, or (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General
* Public License along with this library; if not, write to the
* Free Software Foundation, Inc., 59 Temple Place, Suite 330,
* Boston, MA 02111-1307, USA.
*
* Author: Alexander Larsson <alexl@redhat.com>
* David Zeuthen <davidz@redhat.com>
*/
#include <config.h>
#include "gmount.h"
#include "gvolume.h"
#include "gsimpleasyncresult.h"
#include "glibintl.h"
#include "gioalias.h"
/**
* SECTION:gvolume
* @short_description: Volume management
* @include: gio.h
*
* The #GVolume interface represents user-visible objects that can be
* mounted. Note, when porting from GnomeVFS, #GVolume is the moral
* equivalent of #GnomeVFSDrive.
*
* Mounting a #GVolume instance is an asynchronous operation. For more
* information about asynchronous operations, see #GAsyncReady and
* #GSimpleAsyncReady. To mount a #GVolume, first call
* g_volume_mount() with (at least) the #GVolume instance, optionally
* a #GMountOperation object and a #GAsyncReadyCallback.
*
* Typically, one will only want to pass %NULL for the
* #GMountOperation 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
* g_volume_mount_finish() with the #GVolume instance and the
* #GAsyncReady data to see if the operation was completed
* successfully. If an @error is present when g_volume_mount_finish()
* is called, then it will be filled with any error information.
**/
static void g_volume_base_init (gpointer g_class);
static void g_volume_class_init (gpointer g_class,
gpointer class_data);
GType
g_volume_get_type (void)
{
static GType volume_type = 0;
if (! volume_type)
{
static const GTypeInfo volume_info =
{
sizeof (GVolumeIface), /* class_size */
g_volume_base_init, /* base_init */
NULL, /* base_finalize */
g_volume_class_init,
NULL, /* class_finalize */
NULL, /* class_data */
0,
0, /* n_preallocs */
NULL
};
volume_type =
g_type_register_static (G_TYPE_INTERFACE, I_("GVolume"),
&volume_info, 0);
g_type_interface_add_prerequisite (volume_type, G_TYPE_OBJECT);
}
return volume_type;
}
static void
g_volume_class_init (gpointer g_class,
gpointer class_data)
{
}
static void
g_volume_base_init (gpointer g_class)
{
static gboolean initialized = FALSE;
if (! initialized)
{
/**
* GVolume::changed:
*
* Emitted when the volume has been changed.
**/
g_signal_new (I_("changed"),
G_TYPE_VOLUME,
G_SIGNAL_RUN_LAST,
G_STRUCT_OFFSET (GVolumeIface, changed),
NULL, NULL,
g_cclosure_marshal_VOID__VOID,
G_TYPE_NONE, 0);
/**
* GVolume::removed:
*
* This signal is emitted when the #GVolume have been removed. If
* the recipient is holding references to the object they should
* release them so the object can be finalized.
**/
g_signal_new (I_("removed"),
G_TYPE_VOLUME,
G_SIGNAL_RUN_LAST,
G_STRUCT_OFFSET (GVolumeIface, removed),
NULL, NULL,
g_cclosure_marshal_VOID__VOID,
G_TYPE_NONE, 0);
initialized = TRUE;
}
}
/**
* g_volume_get_name:
* @volume: a #GVolume.
*
* Gets the name of @volume.
*
* Returns: the name for the given @volume. The returned string should
* be freed when no longer needed.
**/
char *
g_volume_get_name (GVolume *volume)
{
GVolumeIface *iface;
g_return_val_if_fail (G_IS_VOLUME (volume), NULL);
iface = G_VOLUME_GET_IFACE (volume);
return (* iface->get_name) (volume);
}
/**
* g_volume_get_icon:
* @volume: a #GVolume.
*
* Gets the icon for @volume.
*
* Returns: a #GIcon.
**/
GIcon *
g_volume_get_icon (GVolume *volume)
{
GVolumeIface *iface;
g_return_val_if_fail (G_IS_VOLUME (volume), NULL);
iface = G_VOLUME_GET_IFACE (volume);
return (* iface->get_icon) (volume);
}
/**
* g_volume_get_uuid:
* @volume: a #GVolume.
*
* 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 %NULL if there is no UUID
* available.
*
* Returns: the UUID for @volume or %NULL if no UUID can be computed.
**/
char *
g_volume_get_uuid (GVolume *volume)
{
GVolumeIface *iface;
g_return_val_if_fail (G_IS_VOLUME (volume), NULL);
iface = G_VOLUME_GET_IFACE (volume);
return (* iface->get_uuid) (volume);
}
/**
* g_volume_get_drive:
* @volume: a #GVolume.
*
* Gets the drive for the @volume.
*
* Returns: a #GDrive or %NULL if @volume is not associated with a drive.
**/
GDrive *
g_volume_get_drive (GVolume *volume)
{
GVolumeIface *iface;
g_return_val_if_fail (G_IS_VOLUME (volume), NULL);
iface = G_VOLUME_GET_IFACE (volume);
return (* iface->get_drive) (volume);
}
/**
* g_volume_get_mount:
* @volume: a #GVolume.
*
* Gets the mount for the @volume.
*
* Returns: a #GMount or %NULL if @volume isn't mounted.
**/
GMount *
g_volume_get_mount (GVolume *volume)
{
GVolumeIface *iface;
g_return_val_if_fail (G_IS_VOLUME (volume), NULL);
iface = G_VOLUME_GET_IFACE (volume);
return (* iface->get_mount) (volume);
}
/**
* g_volume_can_mount:
* @volume: a #GVolume.
*
* Checks if a volume can be mounted.
*
* Returns: %TRUE if the @volume can be mounted. %FALSE otherwise.
**/
gboolean
g_volume_can_mount (GVolume *volume)
{
GVolumeIface *iface;
g_return_val_if_fail (G_IS_VOLUME (volume), FALSE);
iface = G_VOLUME_GET_IFACE (volume);
if (iface->can_mount == NULL)
return FALSE;
return (* iface->can_mount) (volume);
}
/**
* g_volume_can_eject:
* @volume: a #GVolume.
*
* Checks if a volume can be ejected.
*
* Returns: %TRUE if the @volume can be ejected. %FALSE otherwise.
**/
gboolean
g_volume_can_eject (GVolume *volume)
{
GVolumeIface *iface;
g_return_val_if_fail (G_IS_VOLUME (volume), FALSE);
iface = G_VOLUME_GET_IFACE (volume);
if (iface->can_eject == NULL)
return FALSE;
return (* iface->can_eject) (volume);
}
/**
* g_volume_mount:
* @volume: a #GVolume.
* @mount_operation: a #GMountOperation or %NULL to avoid user interaction.
* @cancellable: optional #GCancellable object, %NULL to ignore.
* @callback: a #GAsyncReadyCallback, or %NULL.
* @user_data: a #gpointer.
*
* Mounts a volume.
**/
void
g_volume_mount (GVolume *volume,
GMountOperation *mount_operation,
GCancellable *cancellable,
GAsyncReadyCallback callback,
gpointer user_data)
{
GVolumeIface *iface;
g_return_if_fail (G_IS_VOLUME (volume));
iface = G_VOLUME_GET_IFACE (volume);
if (iface->mount_fn == NULL)
{
g_simple_async_report_error_in_idle (G_OBJECT (volume), callback, user_data,
G_IO_ERROR, G_IO_ERROR_NOT_SUPPORTED,
_("volume doesn't implement mount"));
return;
}
(* iface->mount_fn) (volume, mount_operation, cancellable, callback, user_data);
}
/**
* g_volume_mount_finish:
* @volume: pointer to a #GVolume.
* @result: a #GAsyncResult.
* @error: a #GError.
*
* Finishes mounting a volume.
*
* Returns: %TRUE, %FALSE if operation failed.
**/
gboolean
g_volume_mount_finish (GVolume *volume,
GAsyncResult *result,
GError **error)
{
GVolumeIface *iface;
g_return_val_if_fail (G_IS_VOLUME (volume), FALSE);
g_return_val_if_fail (G_IS_ASYNC_RESULT (result), FALSE);
if (G_IS_SIMPLE_ASYNC_RESULT (result))
{
GSimpleAsyncResult *simple = G_SIMPLE_ASYNC_RESULT (result);
if (g_simple_async_result_propagate_error (simple, error))
return FALSE;
}
iface = G_VOLUME_GET_IFACE (volume);
return (* iface->mount_finish) (volume, result, error);
}
/**
* g_volume_eject:
* @volume: a #GVolume.
* @flags: flags affecting the unmount if required for eject
* @cancellable: optional #GCancellable object, %NULL to ignore.
* @callback: a #GAsyncReadyCallback, or %NULL.
* @user_data: a #gpointer.
*
* Ejects a volume.
**/
void
g_volume_eject (GVolume *volume,
GMountUnmountFlags flags,
GCancellable *cancellable,
GAsyncReadyCallback callback,
gpointer user_data)
{
GVolumeIface *iface;
g_return_if_fail (G_IS_VOLUME (volume));
iface = G_VOLUME_GET_IFACE (volume);
if (iface->eject == NULL)
{
g_simple_async_report_error_in_idle (G_OBJECT (volume), callback, user_data,
G_IO_ERROR, G_IO_ERROR_NOT_SUPPORTED,
_("volume doesn't implement eject"));
return;
}
(* iface->eject) (volume, flags, cancellable, callback, user_data);
}
/**
* g_volume_eject_finish:
* @volume: pointer to a #GVolume.
* @result: a #GAsyncResult.
* @error: a #GError.
*
* Finishes ejecting a volume.
*
* Returns: %TRUE, %FALSE if operation failed.
**/
gboolean
g_volume_eject_finish (GVolume *volume,
GAsyncResult *result,
GError **error)
{
GVolumeIface *iface;
g_return_val_if_fail (G_IS_VOLUME (volume), FALSE);
g_return_val_if_fail (G_IS_ASYNC_RESULT (result), FALSE);
if (G_IS_SIMPLE_ASYNC_RESULT (result))
{
GSimpleAsyncResult *simple = G_SIMPLE_ASYNC_RESULT (result);
if (g_simple_async_result_propagate_error (simple, error))
return FALSE;
}
iface = G_VOLUME_GET_IFACE (volume);
return (* iface->eject_finish) (volume, result, error);
}
/**
* g_volume_get_identifier:
* @volume: a #GVolume
* @kind: the kind of identifier to return
*
* Gets the identifier of the given kind for @volume.
*
* Returns: a newly allocated string containing the
* requested identfier, or %NULL if the #GVolume
* doesn't have this kind of identifier
*/
char *
g_volume_get_identifier (GVolume *volume,
const char *kind)
{
GVolumeIface *iface;
g_return_val_if_fail (G_IS_VOLUME (volume), NULL);
g_return_val_if_fail (kind != NULL, NULL);
iface = G_VOLUME_GET_IFACE (volume);
if (iface->get_identifier == NULL)
return NULL;
return (* iface->get_identifier) (volume, kind);
}
/**
* g_volume_enumerate_identifiers:
* @volume: a #GVolume
*
* Gets the kinds of identifiers that @volume has.
* Use g_volume_get_identifer() to obtain the identifiers
* themselves.
*
* Returns: a %NULL-terminated array of strings containing
* kinds of identifiers. Use g_strfreev() to free.
*/
char **
g_volume_enumerate_identifiers (GVolume *volume)
{
GVolumeIface *iface;
g_return_val_if_fail (G_IS_VOLUME (volume), NULL);
iface = G_VOLUME_GET_IFACE (volume);
if (iface->enumerate_identifiers == NULL)
return NULL;
return (* iface->enumerate_identifiers) (volume);
}
#define __G_VOLUME_C__
#include "gioaliasdef.c"