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/* -*- Mode: C; indent-tabs-mode: t; c-basic-offset: 8; tab-width: 8 -*- */
/*
nautilus-trash-monitor.c: Nautilus trash state watcher.
Copyright (C) 2000 Eazel, Inc.
This program is free software; you can redistribute it and/or
modify it under the terms of the GNU General Public License as
published by the Free Software Foundation; either version 2 of the
License, or (at your option) any later version.
This program 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
General Public License for more details.
You should have received a copy of the GNU General Public
License along with this program; if not, write to the
Free Software Foundation, Inc., 59 Temple Place - Suite 330,
Boston, MA 02111-1307, USA.
Author: Pavel Cisler <pavel@eazel.com>
*/
#include <config.h>
#include "nautilus-trash-monitor.h"
#include "nautilus-directory.h"
#include "nautilus-directory-notify.h"
#include "nautilus-file-attributes.h"
#include "nautilus-file-utilities.h"
#include "nautilus-gtk-macros.h"
#include "nautilus-volume-monitor.h"
#include <gtk/gtksignal.h>
#include <libgnomevfs/gnome-vfs-find-directory.h>
#include <libgnomevfs/gnome-vfs-types.h>
#include <libgnomevfs/gnome-vfs-uri.h>
struct NautilusTrashMonitorDetails {
NautilusDirectory *trash_directory;
gboolean empty;
};
enum {
TRASH_STATE_CHANGED,
LAST_SIGNAL
};
static guint signals[LAST_SIGNAL];
static NautilusTrashMonitor *nautilus_trash_monitor;
static void nautilus_trash_monitor_initialize_class (NautilusTrashMonitorClass *klass);
static void nautilus_trash_monitor_initialize (gpointer object,
gpointer klass);
static void destroy (GtkObject *object);
NAUTILUS_DEFINE_CLASS_BOILERPLATE (NautilusTrashMonitor, nautilus_trash_monitor, GTK_TYPE_OBJECT)
static void
nautilus_trash_monitor_initialize_class (NautilusTrashMonitorClass *klass)
{
GtkObjectClass *object_class;
object_class = GTK_OBJECT_CLASS (klass);
object_class->destroy = destroy;
signals[TRASH_STATE_CHANGED] = gtk_signal_new
("trash_state_changed",
GTK_RUN_LAST,
object_class->type,
GTK_SIGNAL_OFFSET (NautilusTrashMonitorClass, trash_state_changed),
gtk_marshal_NONE__BOOL,
GTK_TYPE_NONE, 1,
GTK_TYPE_BOOL);
gtk_object_class_add_signals (object_class, signals, LAST_SIGNAL);
}
static void
nautilus_trash_files_changed_callback (NautilusDirectory *directory, GList *files,
gpointer callback_data)
{
NautilusTrashMonitor *trash_monitor;
gboolean old_empty_state;
NautilusFile *file;
trash_monitor = callback_data;
g_assert (NAUTILUS_IS_TRASH_MONITOR (trash_monitor));
g_assert (trash_monitor->details->trash_directory == directory);
/* Something about the Trash NautilusDirectory changed, find out if
* it affected the empty state.
*/
old_empty_state = trash_monitor->details->empty;
trash_monitor->details->empty = !nautilus_directory_is_not_empty (directory);
if (old_empty_state != trash_monitor->details->empty) {
file = nautilus_file_get (NAUTILUS_TRASH_URI);
nautilus_file_changed (file);
nautilus_file_unref (file);
/* trash got empty or full, notify everyone who cares */
gtk_signal_emit (GTK_OBJECT (trash_monitor),
signals[TRASH_STATE_CHANGED],
trash_monitor->details->empty);
}
}
static void
nautilus_trash_monitor_initialize (gpointer object, gpointer klass)
{
NautilusDirectory *trash_directory;
NautilusTrashMonitor *trash_monitor;
GList *attributes;
trash_monitor = NAUTILUS_TRASH_MONITOR (object);
/* set up a NautilusDirectory for the Trash directory to monitor */
trash_directory = nautilus_directory_get (NAUTILUS_TRASH_URI);
trash_monitor->details = g_new0 (NautilusTrashMonitorDetails, 1);
trash_monitor->details->trash_directory = trash_directory;
trash_monitor->details->empty = TRUE;
attributes = g_list_append (NULL, NAUTILUS_FILE_ATTRIBUTE_METADATA);
/* Make sure we get notified about changes */
nautilus_directory_file_monitor_add
(trash_directory, trash_monitor, attributes, FALSE);
g_list_free (attributes);
gtk_signal_connect_while_alive
(GTK_OBJECT (trash_directory),
"files_added",
nautilus_trash_files_changed_callback,
trash_monitor,
GTK_OBJECT (trash_monitor));
gtk_signal_connect_while_alive
(GTK_OBJECT (trash_directory),
"files_changed",
nautilus_trash_files_changed_callback,
trash_monitor,
GTK_OBJECT (trash_monitor));
}
static void
destroy (GtkObject *object)
{
NautilusTrashMonitor *trash_monitor;
trash_monitor = NAUTILUS_TRASH_MONITOR (object);
nautilus_directory_file_monitor_remove
(trash_monitor->details->trash_directory,
trash_monitor);
nautilus_directory_unref (trash_monitor->details->trash_directory);
g_free (trash_monitor->details);
}
static void
unref_trash_monitor (void)
{
gtk_object_unref (GTK_OBJECT (nautilus_trash_monitor));
}
NautilusTrashMonitor *
nautilus_trash_monitor_get (void)
{
if (nautilus_trash_monitor == NULL) {
/* not running yet, start it up */
nautilus_trash_monitor = NAUTILUS_TRASH_MONITOR
(gtk_object_new (NAUTILUS_TYPE_TRASH_MONITOR, NULL));
gtk_object_ref (GTK_OBJECT (nautilus_trash_monitor));
gtk_object_sink (GTK_OBJECT (nautilus_trash_monitor));
g_atexit (unref_trash_monitor);
}
return nautilus_trash_monitor;
}
gboolean
nautilus_trash_monitor_is_empty (void)
{
return nautilus_trash_monitor_get ()->details->empty;
}
static gboolean
add_one_volume_trash (const NautilusVolume *volume,
gpointer callback_data)
{
GnomeVFSURI *volume_mount_point_uri;
GnomeVFSURI *trash_uri;
GList **result;
result = (GList **)callback_data;
if (nautilus_volume_monitor_should_integrate_trash (volume)) {
/* Get the uri of the volume mount point as the place
* "near" which to look for trash on the given volume.
*/
volume_mount_point_uri = gnome_vfs_uri_new (
nautilus_volume_monitor_get_volume_mount_uri (volume));
g_assert (volume_mount_point_uri != NULL);
/* Look for trash. It is OK to use a sync call here because
* the options we use (don't create, don't look for it if we
* already don't know where it is) do not cause any IO.
*/
if (gnome_vfs_find_directory (volume_mount_point_uri,
GNOME_VFS_DIRECTORY_KIND_TRASH, &trash_uri,
FALSE, FALSE, 0777) == GNOME_VFS_OK) {
/* found trash, put it on the list */
*result = g_list_append (*result, trash_uri);
}
gnome_vfs_uri_unref (volume_mount_point_uri);
}
/* don't stop iterating */
return FALSE;
}
GList *
nautilus_trash_monitor_get_trash_directories (void)
{
GList *result;
result = NULL;
/* Collect the trash directories on all the mounted volumes. */
nautilus_volume_monitor_each_mounted_volume
(nautilus_volume_monitor_get (), add_one_volume_trash, &result);
return result;
}
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