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 "glocalfilemonitor.h"
26 #include "giomodule-priv.h"
38 G_DEFINE_ABSTRACT_TYPE (GLocalFileMonitor, g_local_file_monitor, G_TYPE_FILE_MONITOR)
41 g_local_file_monitor_init (GLocalFileMonitor* local_monitor)
46 g_local_file_monitor_set_property (GObject *object,
57 G_OBJECT_WARN_INVALID_PROPERTY_ID (object, property_id, pspec);
63 g_local_file_monitor_constructor (GType type,
64 guint n_construct_properties,
65 GObjectConstructParam *construct_properties)
68 GLocalFileMonitorClass *klass;
69 GObjectClass *parent_class;
70 GLocalFileMonitor *local_monitor;
71 const gchar *filename = NULL;
74 klass = G_LOCAL_FILE_MONITOR_CLASS (g_type_class_peek (G_TYPE_LOCAL_FILE_MONITOR));
75 parent_class = G_OBJECT_CLASS (g_type_class_peek_parent (klass));
76 obj = parent_class->constructor (type,
77 n_construct_properties,
78 construct_properties);
80 local_monitor = G_LOCAL_FILE_MONITOR (obj);
82 for (i = 0; i < n_construct_properties; i++)
84 if (strcmp ("filename", g_param_spec_get_name (construct_properties[i].pspec)) == 0)
86 g_warn_if_fail (G_VALUE_HOLDS_STRING (construct_properties[i].value));
87 filename = g_value_get_string (construct_properties[i].value);
92 g_warn_if_fail (filename != NULL);
94 local_monitor->filename = g_strdup (filename);
99 g_local_file_monitor_finalize (GObject *object)
101 GLocalFileMonitor *local_monitor = G_LOCAL_FILE_MONITOR (object);
102 if (local_monitor->filename)
104 g_free (local_monitor->filename);
105 local_monitor->filename = NULL;
108 if (G_OBJECT_CLASS (g_local_file_monitor_parent_class)->finalize)
109 (*G_OBJECT_CLASS (g_local_file_monitor_parent_class)->finalize) (object);
113 g_local_file_monitor_class_init (GLocalFileMonitorClass* klass)
115 GObjectClass *gobject_class = G_OBJECT_CLASS (klass);
117 gobject_class->set_property = g_local_file_monitor_set_property;
118 gobject_class->finalize = g_local_file_monitor_finalize;
119 gobject_class->constructor = g_local_file_monitor_constructor;
121 g_object_class_install_property (gobject_class, PROP_FILENAME,
122 g_param_spec_string ("filename", "File name", "File name to monitor",
123 NULL, G_PARAM_CONSTRUCT_ONLY | G_PARAM_WRITABLE));
127 _compare_monitor_type_by_prio (gconstpointer _a,
131 const GType *a = _a, *b = _b;
136 private_q = g_quark_from_static_string ("gio-prio");
138 prio_a = GPOINTER_TO_INT (g_type_get_qdata (*a, private_q));
139 prio_b = GPOINTER_TO_INT (g_type_get_qdata (*b, private_q));
141 ret = prio_b - prio_a;
147 get_default_local_file_monitor (gpointer data)
149 GType *monitor_impls;
150 guint n_monitor_impls;
152 GLocalFileMonitorClass *chosen_class;
153 GLocalFileMonitorClass **ret = data;
155 _g_io_modules_ensure_loaded ();
157 monitor_impls = g_type_children (G_TYPE_LOCAL_FILE_MONITOR,
160 g_qsort_with_data (monitor_impls,
163 _compare_monitor_type_by_prio,
167 for (i = 0; i < n_monitor_impls; i++)
169 GLocalFileMonitorClass *klass;
171 klass = G_LOCAL_FILE_MONITOR_CLASS (g_type_class_ref (monitor_impls[i]));
173 if (klass->is_supported())
175 chosen_class = klass;
179 g_type_class_unref (klass);
182 g_free (monitor_impls);
187 return (gpointer)G_TYPE_FROM_CLASS (chosen_class);
190 return (gpointer)G_TYPE_INVALID;
194 * g_local_file_monitor_new:
195 * @pathname: path name to monitor.
196 * @flags: #GFileMonitorFlags.
198 * Returns: a new #GFileMonitor for the given @pathname.
201 _g_local_file_monitor_new (const char *pathname,
202 GFileMonitorFlags flags)
204 static GOnce once_init = G_ONCE_INIT;
205 GTypeClass *type_class;
206 GFileMonitor *monitor;
210 g_once (&once_init, get_default_local_file_monitor, &type_class);
211 type = (GType)once_init.retval;
214 if (type != G_TYPE_INVALID)
215 monitor = G_FILE_MONITOR (g_object_new (type, "filename", pathname, NULL));
217 /* This is non-null on first pass here. Unref the class now.
218 * This is to avoid unloading the module and then loading it
219 * again which would happen if we unrefed the class
220 * before creating the monitor.
224 g_type_class_unref (type_class);
229 #define __G_LOCAL_FILE_MONITOR_C__
230 #include "gioaliasdef.c"