1 /* GIO - GLib Input, Output and Streaming Library
3 * Copyright (C) 2006-2007 Red Hat, Inc.
5 * This library is free software; you can redistribute it and/or
6 * modify it under the terms of the GNU Lesser General Public
7 * License as published by the Free Software Foundation; either
8 * version 2 of the License, or (at your option) any later version.
10 * This library is distributed in the hope that it will be useful,
11 * but WITHOUT ANY WARRANTY; without even the implied warranty of
12 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
13 * Lesser General Public License for more details.
15 * You should have received a copy of the GNU Lesser General
16 * Public License along with this library; if not, write to the
17 * Free Software Foundation, Inc., 59 Temple Place, Suite 330,
18 * Boston, MA 02111-1307, USA.
20 * Author: Alexander Larsson <alexl@redhat.com>
25 #include "glocaldirectorymonitor.h"
26 #include "gunixmounts.h"
27 #include "giomodule-priv.h"
40 static gboolean g_local_directory_monitor_cancel (GFileMonitor *monitor);
41 static void mounts_changed (GUnixMountMonitor *mount_monitor,
44 G_DEFINE_ABSTRACT_TYPE (GLocalDirectoryMonitor, g_local_directory_monitor, G_TYPE_FILE_MONITOR)
47 g_local_directory_monitor_finalize (GObject *object)
49 GLocalDirectoryMonitor *local_monitor;
50 local_monitor = G_LOCAL_DIRECTORY_MONITOR (object);
52 g_free (local_monitor->dirname);
54 if (local_monitor->mount_monitor)
56 g_signal_handlers_disconnect_by_func (local_monitor->mount_monitor, mounts_changed, local_monitor);
57 g_object_unref (local_monitor->mount_monitor);
58 local_monitor->mount_monitor = NULL;
61 G_OBJECT_CLASS (g_local_directory_monitor_parent_class)->finalize (object);
65 g_local_directory_monitor_set_property (GObject *object,
76 G_OBJECT_WARN_INVALID_PROPERTY_ID (object, property_id, pspec);
82 g_local_directory_monitor_constructor (GType type,
83 guint n_construct_properties,
84 GObjectConstructParam *construct_properties)
87 GLocalDirectoryMonitorClass *klass;
88 GObjectClass *parent_class;
89 GLocalDirectoryMonitor *local_monitor;
90 const gchar *dirname = NULL;
93 klass = G_LOCAL_DIRECTORY_MONITOR_CLASS (g_type_class_peek (G_TYPE_LOCAL_DIRECTORY_MONITOR));
94 parent_class = G_OBJECT_CLASS (g_type_class_peek_parent (klass));
95 obj = parent_class->constructor (type,
96 n_construct_properties,
97 construct_properties);
99 local_monitor = G_LOCAL_DIRECTORY_MONITOR (obj);
101 for (i = 0; i < n_construct_properties; i++)
103 if (strcmp ("dirname", g_param_spec_get_name (construct_properties[i].pspec)) == 0)
105 g_warn_if_fail (G_VALUE_HOLDS_STRING (construct_properties[i].value));
106 dirname = g_value_get_string (construct_properties[i].value);
111 local_monitor->dirname = g_strdup (dirname);
113 if (!klass->mount_notify)
116 /*claim everything was mounted */
117 local_monitor->was_mounted = TRUE;
119 GUnixMountEntry *mount;
121 /* Emulate unmount detection */
123 mount = g_unix_mount_at (local_monitor->dirname, NULL);
125 local_monitor->was_mounted = mount != NULL;
128 g_unix_mount_free (mount);
130 local_monitor->mount_monitor = g_unix_mount_monitor_new ();
131 g_signal_connect_object (local_monitor->mount_monitor, "mounts_changed",
132 G_CALLBACK (mounts_changed), local_monitor, 0);
140 g_local_directory_monitor_class_init (GLocalDirectoryMonitorClass* klass)
142 GObjectClass* gobject_class = G_OBJECT_CLASS (klass);
143 GFileMonitorClass *file_monitor_class = G_FILE_MONITOR_CLASS (klass);
145 gobject_class->finalize = g_local_directory_monitor_finalize;
146 gobject_class->set_property = g_local_directory_monitor_set_property;
147 gobject_class->constructor = g_local_directory_monitor_constructor;
149 file_monitor_class->cancel = g_local_directory_monitor_cancel;
151 g_object_class_install_property (gobject_class,
153 g_param_spec_string ("dirname",
154 P_("Directory name"),
155 P_("Directory to monitor"),
157 G_PARAM_CONSTRUCT_ONLY|
159 G_PARAM_STATIC_NAME|G_PARAM_STATIC_NICK|G_PARAM_STATIC_BLURB));
161 klass->mount_notify = FALSE;
165 g_local_directory_monitor_init (GLocalDirectoryMonitor *local_monitor)
170 mounts_changed (GUnixMountMonitor *mount_monitor,
173 GLocalDirectoryMonitor *local_monitor = user_data;
174 GUnixMountEntry *mount;
178 /* Emulate unmount detection */
181 /*claim everything was mounted */
184 mount = g_unix_mount_at (local_monitor->dirname, NULL);
186 is_mounted = mount != NULL;
189 g_unix_mount_free (mount);
192 if (local_monitor->was_mounted != is_mounted)
194 if (local_monitor->was_mounted && !is_mounted)
196 file = g_file_new_for_path (local_monitor->dirname);
197 g_file_monitor_emit_event (G_FILE_MONITOR (local_monitor),
199 G_FILE_MONITOR_EVENT_UNMOUNTED);
200 g_object_unref (file);
202 local_monitor->was_mounted = is_mounted;
207 get_default_local_directory_monitor (gpointer data)
209 GLocalDirectoryMonitorClass *chosen_class;
210 GLocalDirectoryMonitorClass **ret = data;
211 GIOExtensionPoint *ep;
212 GList *extensions, *l;
214 _g_io_modules_ensure_loaded ();
216 ep = g_io_extension_point_lookup (G_LOCAL_DIRECTORY_MONITOR_EXTENSION_POINT_NAME);
218 extensions = g_io_extension_point_get_extensions (ep);
221 for (l = extensions; l != NULL; l = l->next)
223 GIOExtension *extension = l->data;
224 GLocalDirectoryMonitorClass *klass;
226 klass = G_LOCAL_DIRECTORY_MONITOR_CLASS (g_io_extension_ref_class (extension));
228 if (klass->is_supported ())
230 chosen_class = klass;
234 g_type_class_unref (klass);
240 return (gpointer)G_TYPE_FROM_CLASS (chosen_class);
243 return (gpointer)G_TYPE_INVALID;
247 * _g_local_directory_monitor_new:
248 * @dirname: filename of the directory to monitor.
249 * @flags: #GFileMonitorFlags.
251 * Returns: new #GFileMonitor for the given @dirname.
254 _g_local_directory_monitor_new (const char *dirname,
255 GFileMonitorFlags flags,
258 static GOnce once_init = G_ONCE_INIT;
259 GTypeClass *type_class;
260 GFileMonitor *monitor;
264 g_once (&once_init, get_default_local_directory_monitor, &type_class);
265 type = (GType)once_init.retval;
268 if (type != G_TYPE_INVALID)
269 monitor = G_FILE_MONITOR (g_object_new (type, "dirname", dirname, NULL));
271 g_set_error_literal (error, G_IO_ERROR, G_IO_ERROR_FAILED,
272 _("Unable to find default local directory monitor type"));
274 /* This is non-null on first pass here. Unref the class now.
275 * This is to avoid unloading the module and then loading it
276 * again which would happen if we unrefed the class
277 * before creating the monitor.
281 g_type_class_unref (type_class);
287 g_local_directory_monitor_cancel (GFileMonitor *monitor)
289 GLocalDirectoryMonitor *local_monitor = G_LOCAL_DIRECTORY_MONITOR (monitor);
291 if (local_monitor->mount_monitor)
293 g_signal_handlers_disconnect_by_func (local_monitor->mount_monitor, mounts_changed, local_monitor);
294 g_object_unref (local_monitor->mount_monitor);
295 local_monitor->mount_monitor = NULL;
301 #define __G_LOCAL_DIRECTORY_MONITOR_C__
302 #include "gioaliasdef.c"