1 /* -*- Mode: C; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */ 2 /* vim:set expandtab ts=4 shiftwidth=4: */ 3 /* GIO - GLib Input, Output and Streaming Library 4 * 5 * Copyright (C) 2006-2007 Red Hat, Inc. 6 * Copyright (C) 2007 Sebastian Drge. 7 * Copyright (C) 2008 Sun Microsystems, Inc. All rights reserved. 8 * Use is subject to license terms. 9 * 10 * This library is free software; you can redistribute it and/or 11 * modify it under the terms of the GNU Lesser General Public 12 * License as published by the Free Software Foundation; either 13 * version 2 of the License, or (at your option) any later version. 14 * 15 * This library is distributed in the hope that it will be useful, 16 * but WITHOUT ANY WARRANTY; without even the implied warranty of 17 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU 18 * Lesser General Public License for more details. 19 * 20 * You should have received a copy of the GNU Lesser General 21 * Public License along with this library; if not, write to the 22 * Free Software Foundation, Inc., 59 Temple Place, Suite 330, 23 * Boston, MA 02111-1307, USA. 24 * 25 * Authors: Alexander Larsson <alexl (at) redhat.com> 26 * John McCutchan <john (at) johnmccutchan.com> 27 * Sebastian Drge <slomo (at) circular-chaos.org> 28 * Lin Ma <lin.ma (at) sun.com> 29 */ 30 31 #include "config.h" 32 33 #include "gfenfilemonitor.h" 34 #include <gio/giomodule.h> 35 36 #include "fen-helper.h" 37 38 #include "gioalias.h" 39 40 struct _GFenFileMonitor 41 { 42 GLocalFileMonitor parent_instance; 43 fen_sub* sub; 44 }; 45 46 static gboolean g_fen_file_monitor_cancel (GFileMonitor* monitor); 47 48 #define g_fen_file_monitor_get_type _g_fen_file_monitor_get_type 49 G_DEFINE_TYPE_WITH_CODE (GFenFileMonitor, g_fen_file_monitor, G_TYPE_LOCAL_FILE_MONITOR, 50 g_io_extension_point_implement (G_LOCAL_FILE_MONITOR_EXTENSION_POINT_NAME, 51 g_define_type_id, 52 "fen", 53 20)) 54 55 static void 56 g_fen_file_monitor_finalize (GObject *object) 57 { 58 GFenFileMonitor *self = G_FEN_FILE_MONITOR (object); 59 60 if (self->sub) { 61 fen_remove (G_LOCAL_FILE_MONITOR (self)->filename, self->sub, FALSE); 62 fen_sub_delete (self->sub); 63 self->sub = NULL; 64 } 65 66 if (G_OBJECT_CLASS (g_fen_file_monitor_parent_class)->finalize) 67 (*G_OBJECT_CLASS (g_fen_file_monitor_parent_class)->finalize) (object); 68 } 69 70 static GObject * 71 g_fen_file_monitor_constructor (GType type, 72 guint n_construct_properties, 73 GObjectConstructParam *construct_properties) 74 { 75 GObject *obj; 76 GFenFileMonitorClass *klass; 77 GObjectClass *parent_class; 78 GFenFileMonitor *self; 79 const gchar *filename = NULL; 80 81 klass = G_FEN_FILE_MONITOR_CLASS (g_type_class_peek (G_TYPE_FEN_FILE_MONITOR)); 82 parent_class = g_fen_file_monitor_parent_class; 83 obj = parent_class->constructor (type, 84 n_construct_properties, 85 construct_properties); 86 87 self = G_FEN_FILE_MONITOR (obj); 88 89 filename = G_LOCAL_FILE_MONITOR (obj)->filename; 90 91 g_assert (filename != NULL); 92 93 /* Will never fail as is_supported() should be called before instanciating 94 * anyway */ 95 if (!fen_init ()) 96 g_assert_not_reached (); 97 98 /* FIXME: what to do about errors here? we can't return NULL or another 99 * kind of error and an assertion is probably too hard */ 100 self->sub = fen_sub_new (self, FALSE); 101 g_assert (self->sub); 102 103 fen_add (filename, self->sub, FALSE); 104 105 return obj; 106 } 107 108 static gboolean 109 g_fen_file_monitor_is_supported (void) 110 { 111 return fen_init (); 112 } 113 114 static void 115 g_fen_file_monitor_class_init (GFenFileMonitorClass* klass) 116 { 117 GObjectClass* gobject_class = G_OBJECT_CLASS (klass); 118 GFileMonitorClass *file_monitor_class = G_FILE_MONITOR_CLASS (klass); 119 GLocalFileMonitorClass *local_file_monitor_class = G_LOCAL_FILE_MONITOR_CLASS (klass); 120 121 gobject_class->finalize = g_fen_file_monitor_finalize; 122 gobject_class->constructor = g_fen_file_monitor_constructor; 123 file_monitor_class->cancel = g_fen_file_monitor_cancel; 124 125 local_file_monitor_class->is_supported = g_fen_file_monitor_is_supported; 126 } 127 128 static void 129 g_fen_file_monitor_init (GFenFileMonitor* monitor) 130 { 131 } 132 133 static gboolean 134 g_fen_file_monitor_cancel (GFileMonitor* monitor) 135 { 136 GFenFileMonitor *self = G_FEN_FILE_MONITOR (monitor); 137 138 if (self->sub) { 139 fen_remove (G_LOCAL_FILE_MONITOR (self)->filename, self->sub, FALSE); 140 fen_sub_delete (self->sub); 141 self->sub = NULL; 142 } 143 144 if (G_FILE_MONITOR_CLASS (g_fen_file_monitor_parent_class)->cancel) 145 (*G_FILE_MONITOR_CLASS (g_fen_file_monitor_parent_class)->cancel) (monitor); 146 147 return TRUE; 148 } 149 150
