/* 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>
*/
#include "config.h"
#include "glocaldirectorymonitor.h"
#include "gunixmounts.h"
#include "giomodule-priv.h"
#include "gfile.h"
#include "gioerror.h"
#include "glibintl.h"
#include <string.h>
#include "gioalias.h"
enum
{
PROP_0,
PROP_DIRNAME
};
static gboolean g_local_directory_monitor_cancel (GFileMonitor *monitor);
static void mounts_changed (GUnixMountMonitor *mount_monitor,
gpointer user_data);
G_DEFINE_ABSTRACT_TYPE (GLocalDirectoryMonitor, g_local_directory_monitor, G_TYPE_FILE_MONITOR)
static void
g_local_directory_monitor_finalize (GObject *object)
{
GLocalDirectoryMonitor *local_monitor;
local_monitor = G_LOCAL_DIRECTORY_MONITOR (object);
g_free (local_monitor->dirname);
if (local_monitor->mount_monitor)
{
g_signal_handlers_disconnect_by_func (local_monitor->mount_monitor, mounts_changed, local_monitor);
g_object_unref (local_monitor->mount_monitor);
local_monitor->mount_monitor = NULL;
}
G_OBJECT_CLASS (g_local_directory_monitor_parent_class)->finalize (object);
}
static void
g_local_directory_monitor_set_property (GObject *object,
guint property_id,
const GValue *value,
GParamSpec *pspec)
{
switch (property_id)
{
case PROP_DIRNAME:
/* Do nothing */
break;
default:
G_OBJECT_WARN_INVALID_PROPERTY_ID (object, property_id, pspec);
break;
}
}
static GObject *
g_local_directory_monitor_constructor (GType type,
guint n_construct_properties,
GObjectConstructParam *construct_properties)
{
GObject *obj;
GLocalDirectoryMonitorClass *klass;
GObjectClass *parent_class;
GLocalDirectoryMonitor *local_monitor;
const gchar *dirname = NULL;
gint i;
klass = G_LOCAL_DIRECTORY_MONITOR_CLASS (g_type_class_peek (G_TYPE_LOCAL_DIRECTORY_MONITOR));
parent_class = G_OBJECT_CLASS (g_type_class_peek_parent (klass));
obj = parent_class->constructor (type,
n_construct_properties,
construct_properties);
local_monitor = G_LOCAL_DIRECTORY_MONITOR (obj);
for (i = 0; i < n_construct_properties; i++)
{
if (strcmp ("dirname", g_param_spec_get_name (construct_properties[i].pspec)) == 0)
{
g_warn_if_fail (G_VALUE_HOLDS_STRING (construct_properties[i].value));
dirname = g_value_get_string (construct_properties[i].value);
break;
}
}
local_monitor->dirname = g_strdup (dirname);
if (!klass->mount_notify)
{
#ifdef G_OS_WIN32
/*claim everything was mounted */
local_monitor->was_mounted = TRUE;
#else
GUnixMountEntry *mount;
/* Emulate unmount detection */
mount = g_unix_mount_at (local_monitor->dirname, NULL);
local_monitor->was_mounted = mount != NULL;
if (mount)
g_unix_mount_free (mount);
local_monitor->mount_monitor = g_unix_mount_monitor_new ();
g_signal_connect_object (local_monitor->mount_monitor, "mounts-changed",
G_CALLBACK (mounts_changed), local_monitor, 0);
#endif
}
return obj;
}
static void
g_local_directory_monitor_class_init (GLocalDirectoryMonitorClass* klass)
{
GObjectClass* gobject_class = G_OBJECT_CLASS (klass);
GFileMonitorClass *file_monitor_class = G_FILE_MONITOR_CLASS (klass);
gobject_class->finalize = g_local_directory_monitor_finalize;
gobject_class->set_property = g_local_directory_monitor_set_property;
gobject_class->constructor = g_local_directory_monitor_constructor;
file_monitor_class->cancel = g_local_directory_monitor_cancel;
g_object_class_install_property (gobject_class,
PROP_DIRNAME,
g_param_spec_string ("dirname",
P_("Directory name"),
P_("Directory to monitor"),
NULL,
G_PARAM_CONSTRUCT_ONLY|
G_PARAM_WRITABLE|
G_PARAM_STATIC_NAME|G_PARAM_STATIC_NICK|G_PARAM_STATIC_BLURB));
klass->mount_notify = FALSE;
}
static void
g_local_directory_monitor_init (GLocalDirectoryMonitor *local_monitor)
{
}
static void
mounts_changed (GUnixMountMonitor *mount_monitor,
gpointer user_data)
{
GLocalDirectoryMonitor *local_monitor = user_data;
GUnixMountEntry *mount;
gboolean is_mounted;
GFile *file;
/* Emulate unmount detection */
#ifdef G_OS_WIN32
mount = NULL;
/*claim everything was mounted */
is_mounted = TRUE;
#else
mount = g_unix_mount_at (local_monitor->dirname, NULL);
is_mounted = mount != NULL;
if (mount)
g_unix_mount_free (mount);
#endif
if (local_monitor->was_mounted != is_mounted)
{
if (local_monitor->was_mounted && !is_mounted)
{
file = g_file_new_for_path (local_monitor->dirname);
g_file_monitor_emit_event (G_FILE_MONITOR (local_monitor),
file, NULL,
G_FILE_MONITOR_EVENT_UNMOUNTED);
g_object_unref (file);
}
local_monitor->was_mounted = is_mounted;
}
}
static gpointer
get_default_local_directory_monitor (gpointer data)
{
GLocalDirectoryMonitorClass *chosen_class;
GLocalDirectoryMonitorClass **ret = data;
GIOExtensionPoint *ep;
GList *extensions, *l;
_g_io_modules_ensure_loaded ();
ep = g_io_extension_point_lookup (G_LOCAL_DIRECTORY_MONITOR_EXTENSION_POINT_NAME);
extensions = g_io_extension_point_get_extensions (ep);
chosen_class = NULL;
for (l = extensions; l != NULL; l = l->next)
{
GIOExtension *extension = l->data;
GLocalDirectoryMonitorClass *klass;
klass = G_LOCAL_DIRECTORY_MONITOR_CLASS (g_io_extension_ref_class (extension));
if (klass->is_supported ())
{
chosen_class = klass;
break;
}
else
g_type_class_unref (klass);
}
if (chosen_class)
{
*ret = chosen_class;
return (gpointer)G_TYPE_FROM_CLASS (chosen_class);
}
else
return (gpointer)G_TYPE_INVALID;
}
/**
* _g_local_directory_monitor_new:
* @dirname: filename of the directory to monitor.
* @flags: #GFileMonitorFlags.
*
* Returns: new #GFileMonitor for the given @dirname.
**/
GFileMonitor*
_g_local_directory_monitor_new (const char *dirname,
GFileMonitorFlags flags,
GError **error)
{
static GOnce once_init = G_ONCE_INIT;
GTypeClass *type_class;
GFileMonitor *monitor;
GType type;
type_class = NULL;
g_once (&once_init, get_default_local_directory_monitor, &type_class);
type = (GType)once_init.retval;
monitor = NULL;
if (type != G_TYPE_INVALID)
monitor = G_FILE_MONITOR (g_object_new (type, "dirname", dirname, NULL));
else
g_set_error_literal (error, G_IO_ERROR, G_IO_ERROR_FAILED,
_("Unable to find default local directory monitor type"));
/* This is non-null on first pass here. Unref the class now.
* This is to avoid unloading the module and then loading it
* again which would happen if we unrefed the class
* before creating the monitor.
*/
if (type_class)
g_type_class_unref (type_class);
return monitor;
}
static gboolean
g_local_directory_monitor_cancel (GFileMonitor *monitor)
{
GLocalDirectoryMonitor *local_monitor = G_LOCAL_DIRECTORY_MONITOR (monitor);
if (local_monitor->mount_monitor)
{
g_signal_handlers_disconnect_by_func (local_monitor->mount_monitor, mounts_changed, local_monitor);
g_object_unref (local_monitor->mount_monitor);
local_monitor->mount_monitor = NULL;
}
return TRUE;
}
#define __G_LOCAL_DIRECTORY_MONITOR_C__
#include "gioaliasdef.c"