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, gpointer user_data);
43 G_DEFINE_ABSTRACT_TYPE (GLocalDirectoryMonitor, g_local_directory_monitor, G_TYPE_FILE_MONITOR)
46 g_local_directory_monitor_finalize (GObject* object)
48 GLocalDirectoryMonitor* local_monitor;
49 local_monitor = G_LOCAL_DIRECTORY_MONITOR (object);
51 g_free (local_monitor->dirname);
53 if (local_monitor->mount_monitor)
55 g_signal_handlers_disconnect_by_func (local_monitor->mount_monitor, mounts_changed, local_monitor);
56 g_object_unref (local_monitor->mount_monitor);
57 local_monitor->mount_monitor = NULL;
60 if (G_OBJECT_CLASS (g_local_directory_monitor_parent_class)->finalize)
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 g_warning ("G_OS_WIN32: no mount emulation");
118 GUnixMountEntry *mount;
120 /* Emulate unmount detection */
122 mount = g_unix_mount_at (local_monitor->dirname, NULL);
124 local_monitor->was_mounted = mount != NULL;
127 g_unix_mount_free (mount);
129 local_monitor->mount_monitor = g_unix_mount_monitor_new ();
130 g_signal_connect (local_monitor->mount_monitor, "mounts_changed",
131 G_CALLBACK (mounts_changed), local_monitor);
139 g_local_directory_monitor_class_init (GLocalDirectoryMonitorClass* klass)
141 GObjectClass* gobject_class = G_OBJECT_CLASS (klass);
142 GFileMonitorClass *file_monitor_class = G_FILE_MONITOR_CLASS (klass);
144 gobject_class->finalize = g_local_directory_monitor_finalize;
145 gobject_class->set_property = g_local_directory_monitor_set_property;
146 gobject_class->constructor = g_local_directory_monitor_constructor;
148 file_monitor_class->cancel = g_local_directory_monitor_cancel;
150 g_object_class_install_property (gobject_class,
152 g_param_spec_string ("dirname",
153 P_("Directory name"),
154 P_("Directory to monitor"),
156 G_PARAM_CONSTRUCT_ONLY|
158 G_PARAM_STATIC_NAME|G_PARAM_STATIC_NICK|G_PARAM_STATIC_BLURB));
160 klass->mount_notify = FALSE;
164 g_local_directory_monitor_init (GLocalDirectoryMonitor* local_monitor)
169 mounts_changed (GUnixMountMonitor *mount_monitor,
172 GLocalDirectoryMonitor *local_monitor = user_data;
173 GUnixMountEntry *mount;
177 /* Emulate unmount detection */
180 g_warning ("G_OS_WIN32: no mount emulation");
182 mount = g_unix_mount_at (local_monitor->dirname, NULL);
184 is_mounted = mount != NULL;
187 g_unix_mount_free (mount);
190 if (local_monitor->was_mounted != is_mounted)
192 if (local_monitor->was_mounted && !is_mounted)
194 file = g_file_new_for_path (local_monitor->dirname);
195 g_file_monitor_emit_event (G_FILE_MONITOR (local_monitor),
197 G_FILE_MONITOR_EVENT_UNMOUNTED);
198 g_object_unref (file);
200 local_monitor->was_mounted = is_mounted;
205 _compare_monitor_type_by_prio (gconstpointer _a,
209 const GType *a = _a, *b = _b;
214 private_q = g_quark_from_static_string ("gio-prio");
216 prio_a = GPOINTER_TO_INT (g_type_get_qdata (*a, private_q));
217 prio_b = GPOINTER_TO_INT (g_type_get_qdata (*b, private_q));
219 ret = prio_b - prio_a;
225 get_default_local_directory_monitor (gpointer data)
227 GType *monitor_impls;
228 guint n_monitor_impls;
230 GLocalDirectoryMonitorClass *chosen_class;
231 GLocalDirectoryMonitorClass **ret = data;
233 _g_io_modules_ensure_loaded ();
235 monitor_impls = g_type_children (G_TYPE_LOCAL_DIRECTORY_MONITOR,
238 g_qsort_with_data (monitor_impls,
241 _compare_monitor_type_by_prio,
245 for (i = 0; i < n_monitor_impls; i++)
247 GLocalDirectoryMonitorClass *klass;
249 klass = G_LOCAL_DIRECTORY_MONITOR_CLASS (g_type_class_ref (monitor_impls[i]));
251 if (klass->is_supported())
253 chosen_class = klass;
257 g_type_class_unref (klass);
260 g_free (monitor_impls);
265 return (gpointer)G_TYPE_FROM_CLASS (chosen_class);
268 return (gpointer)G_TYPE_INVALID;
272 * g_local_directory_monitor_new:
273 * @dirname: filename of the directory to monitor.
274 * @flags: #GFileMonitorFlags.
276 * Returns: new #GFileMonitor for the given @dirname.
279 _g_local_directory_monitor_new (const char* dirname,
280 GFileMonitorFlags flags)
282 static GOnce once_init = G_ONCE_INIT;
283 GTypeClass *type_class;
284 GFileMonitor *monitor;
288 g_once (&once_init, get_default_local_directory_monitor, &type_class);
289 type = (GType)once_init.retval;
292 if (type != G_TYPE_INVALID)
293 monitor = G_FILE_MONITOR (g_object_new (type, "dirname", dirname, NULL));
295 /* This is non-null on first pass here. Unref the class now.
296 * This is to avoid unloading the module and then loading it
297 * again which would happen if we unrefed the class
298 * before creating the monitor.
302 g_type_class_unref (type_class);
308 g_local_directory_monitor_cancel (GFileMonitor* monitor)
310 GLocalDirectoryMonitor *local_monitor = G_LOCAL_DIRECTORY_MONITOR (monitor);
312 if (local_monitor->mount_monitor)
314 g_signal_handlers_disconnect_by_func (local_monitor->mount_monitor, mounts_changed, local_monitor);
315 g_object_unref (local_monitor->mount_monitor);
316 local_monitor->mount_monitor = NULL;
322 #define __G_LOCAL_DIRECTORY_MONITOR_C__
323 #include "gioaliasdef.c"