1 /* GIO - GLib Input, Output and Streaming Library
2 *
3 * Copyright (C) 2006-2007 Red Hat, Inc.
4 * Copyright (C) 2007 Sebastian Dröge.
5 *
6 * This library is free software; you can redistribute it and/or
7 * modify it under the terms of the GNU Lesser General Public
8 * License as published by the Free Software Foundation; either
9 * version 2 of the License, or (at your option) any later version.
10 *
11 * This library is distributed in the hope that it will be useful,
12 * but WITHOUT ANY WARRANTY; without even the implied warranty of
13 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
14 * Lesser General Public License for more details.
15 *
16 * You should have received a copy of the GNU Lesser General
17 * Public License along with this library; if not, write to the
18 * Free Software Foundation, Inc., 59 Temple Place, Suite 330,
19 * Boston, MA 02111-1307, USA.
20 *
21 * Authors: Alexander Larsson <alexl@redhat.com>
22 * John McCutchan <john@johnmccutchan.com>
23 * Sebastian Dröge <slomo@circular-chaos.org>
24 */
25
26 #include "config.h"
27
28 #include "gfamfilemonitor.h"
29 #include "giomodule.h"
30
31 #include "fam-helper.h"
32
33 struct _GFamFileMonitor
34 {
35 GLocalFileMonitor parent_instance;
36 fam_sub *sub;
37 };
38
39 static gboolean g_fam_file_monitor_cancel (GFileMonitor* monitor);
40
G_DEFINE_DYNAMIC_TYPE(GFamFileMonitor,g_fam_file_monitor,G_TYPE_LOCAL_FILE_MONITOR)41 G_DEFINE_DYNAMIC_TYPE (GFamFileMonitor, g_fam_file_monitor, G_TYPE_LOCAL_FILE_MONITOR)
42
43 static void
44 g_fam_file_monitor_finalize (GObject *object)
45 {
46 GFamFileMonitor *fam_monitor = G_FAM_FILE_MONITOR (object);
47 fam_sub *sub = fam_monitor->sub;
48
49 if (sub) {
50 if (!_fam_sub_cancel (sub))
51 g_warning ("Unexpected error cancelling fam monitor");
52 fam_monitor->sub = NULL;
53 }
54
55 if (G_OBJECT_CLASS (g_fam_file_monitor_parent_class)->finalize)
56 (*G_OBJECT_CLASS (g_fam_file_monitor_parent_class)->finalize) (object);
57 }
58
59 static GObject *
g_fam_file_monitor_constructor(GType type,guint n_construct_properties,GObjectConstructParam * construct_properties)60 g_fam_file_monitor_constructor (GType type,
61 guint n_construct_properties,
62 GObjectConstructParam *construct_properties)
63 {
64 GObject *obj;
65 GFamFileMonitorClass *klass;
66 GObjectClass *parent_class;
67 GFamFileMonitor *fam_monitor;
68 const gchar *filename = NULL;
69 fam_sub *sub = NULL;
70
71 klass = G_FAM_FILE_MONITOR_CLASS (g_type_class_peek (G_TYPE_FAM_FILE_MONITOR));
72 parent_class = G_OBJECT_CLASS (g_type_class_peek_parent (klass));
73 obj = parent_class->constructor (type,
74 n_construct_properties,
75 construct_properties);
76
77 fam_monitor = G_FAM_FILE_MONITOR (obj);
78
79 filename = G_LOCAL_FILE_MONITOR (obj)->filename;
80
81 g_assert (filename != NULL);
82
83 sub = _fam_sub_add (filename, FALSE, fam_monitor);
84 /* FIXME: what to do about errors here? we can't return NULL or another
85 * kind of error and an assertion is probably too hard */
86 g_assert (sub != NULL);
87
88 fam_monitor->sub = sub;
89
90 return obj;
91 }
92
93 static void
g_fam_file_monitor_class_finalize(GFamFileMonitorClass * klass)94 g_fam_file_monitor_class_finalize (GFamFileMonitorClass *klass)
95 {
96 }
97
98 static gboolean
g_fam_file_monitor_is_supported(void)99 g_fam_file_monitor_is_supported (void)
100 {
101 return _fam_sub_startup ();
102 }
103
104 static void
g_fam_file_monitor_class_init(GFamFileMonitorClass * klass)105 g_fam_file_monitor_class_init (GFamFileMonitorClass* klass)
106 {
107 GObjectClass* gobject_class = G_OBJECT_CLASS (klass);
108 GFileMonitorClass *file_monitor_class = G_FILE_MONITOR_CLASS (klass);
109 GLocalFileMonitorClass *local_file_monitor_class = G_LOCAL_FILE_MONITOR_CLASS (klass);
110
111 gobject_class->finalize = g_fam_file_monitor_finalize;
112 gobject_class->constructor = g_fam_file_monitor_constructor;
113 file_monitor_class->cancel = g_fam_file_monitor_cancel;
114
115 local_file_monitor_class->is_supported = g_fam_file_monitor_is_supported;
116 }
117
118 static void
g_fam_file_monitor_init(GFamFileMonitor * monitor)119 g_fam_file_monitor_init (GFamFileMonitor* monitor)
120 {
121
122 }
123
124 static gboolean
g_fam_file_monitor_cancel(GFileMonitor * monitor)125 g_fam_file_monitor_cancel (GFileMonitor* monitor)
126 {
127 GFamFileMonitor *fam_monitor = G_FAM_FILE_MONITOR (monitor);
128 fam_sub *sub = fam_monitor->sub;
129
130 if (sub) {
131 if (!_fam_sub_cancel (sub))
132 g_warning ("Unexpected error cancelling fam monitor");
133 fam_monitor->sub = NULL;
134 }
135
136 if (G_FILE_MONITOR_CLASS (g_fam_file_monitor_parent_class)->cancel)
137 (*G_FILE_MONITOR_CLASS (g_fam_file_monitor_parent_class)->cancel) (monitor);
138
139 return TRUE;
140 }
141
142 void
g_fam_file_monitor_register(GIOModule * module)143 g_fam_file_monitor_register (GIOModule *module)
144 {
145 g_fam_file_monitor_register_type (G_TYPE_MODULE (module));
146 g_io_extension_point_implement (G_LOCAL_FILE_MONITOR_EXTENSION_POINT_NAME,
147 G_TYPE_FAM_FILE_MONITOR,
148 "fam",
149 10);
150 }
151
152