1 /* -*- Mode: C; indent-tabs-mode: t; c-basic-offset: 8; tab-width: 8 -*- */
2
3 /*
4 caja-trash-monitor.c: Caja trash state watcher.
5
6 Copyright (C) 2000, 2001 Eazel, Inc.
7
8 This program is free software; you can redistribute it and/or
9 modify it under the terms of the GNU General Public License as
10 published by the Free Software Foundation; either version 2 of the
11 License, or (at your option) any later version.
12
13 This program is distributed in the hope that it will be useful,
14 but WITHOUT ANY WARRANTY; without even the implied warranty of
15 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
16 General Public License for more details.
17
18 You should have received a copy of the GNU General Public
19 License along with this program; if not, write to the
20 Free Software Foundation, Inc., 51 Franklin St, Fifth Floor,
21 Boston, MA 02110-1301, USA.
22
23 Author: Pavel Cisler <pavel@eazel.com>
24 */
25
26 #include <config.h>
27
28 #include <gio/gio.h>
29 #include <string.h>
30
31 #include <eel/eel-debug.h>
32
33 #include "caja-trash-monitor.h"
34 #include "caja-directory-notify.h"
35 #include "caja-directory.h"
36 #include "caja-file-attributes.h"
37 #include "caja-icon-names.h"
38
39 struct _CajaTrashMonitorPrivate
40 {
41 gboolean empty;
42 GIcon *icon;
43 GFileMonitor *file_monitor;
44 };
45
46 enum
47 {
48 TRASH_STATE_CHANGED,
49 LAST_SIGNAL
50 };
51
52 static guint signals[LAST_SIGNAL] = { 0 };
53 static CajaTrashMonitor *caja_trash_monitor = NULL;
54
G_DEFINE_TYPE_WITH_PRIVATE(CajaTrashMonitor,caja_trash_monitor,G_TYPE_OBJECT)55 G_DEFINE_TYPE_WITH_PRIVATE (CajaTrashMonitor, caja_trash_monitor, G_TYPE_OBJECT)
56
57 static void
58 caja_trash_monitor_finalize (GObject *object)
59 {
60 CajaTrashMonitor *trash_monitor;
61
62 trash_monitor = CAJA_TRASH_MONITOR (object);
63
64 if (trash_monitor->details->icon)
65 {
66 g_object_unref (trash_monitor->details->icon);
67 }
68 if (trash_monitor->details->file_monitor)
69 {
70 g_object_unref (trash_monitor->details->file_monitor);
71 }
72
73 G_OBJECT_CLASS (caja_trash_monitor_parent_class)->finalize (object);
74 }
75
76 static void
caja_trash_monitor_class_init(CajaTrashMonitorClass * klass)77 caja_trash_monitor_class_init (CajaTrashMonitorClass *klass)
78 {
79 GObjectClass *object_class;
80
81 object_class = G_OBJECT_CLASS (klass);
82
83 object_class->finalize = caja_trash_monitor_finalize;
84
85 signals[TRASH_STATE_CHANGED] = g_signal_new
86 ("trash_state_changed",
87 G_TYPE_FROM_CLASS (object_class),
88 G_SIGNAL_RUN_LAST,
89 G_STRUCT_OFFSET (CajaTrashMonitorClass, trash_state_changed),
90 NULL, NULL,
91 g_cclosure_marshal_VOID__BOOLEAN,
92 G_TYPE_NONE, 1,
93 G_TYPE_BOOLEAN);
94 }
95
96 static void
update_info_cb(GObject * source_object,GAsyncResult * res,gpointer user_data)97 update_info_cb (GObject *source_object,
98 GAsyncResult *res,
99 gpointer user_data)
100 {
101 CajaTrashMonitor *trash_monitor;
102 GFileInfo *info;
103 gboolean empty;
104
105 trash_monitor = CAJA_TRASH_MONITOR (user_data);
106
107 info = g_file_query_info_finish (G_FILE (source_object),
108 res, NULL);
109
110 if (info != NULL)
111 {
112 GIcon *icon;
113
114 icon = g_file_info_get_icon (info);
115
116 if (icon)
117 {
118 g_object_unref (trash_monitor->details->icon);
119 trash_monitor->details->icon = g_object_ref (icon);
120 empty = TRUE;
121 if (G_IS_THEMED_ICON (icon))
122 {
123 const char * const *names;
124 int i;
125
126 names = g_themed_icon_get_names (G_THEMED_ICON (icon));
127 for (i = 0; names[i] != NULL; i++)
128 {
129 if (strcmp (names[i], CAJA_ICON_TRASH_FULL) == 0)
130 {
131 empty = FALSE;
132 break;
133 }
134 }
135 }
136 if (trash_monitor->details->empty != empty)
137 {
138 trash_monitor->details->empty = empty;
139
140 /* trash got empty or full, notify everyone who cares */
141 g_signal_emit (trash_monitor,
142 signals[TRASH_STATE_CHANGED], 0,
143 trash_monitor->details->empty);
144 }
145 }
146 g_object_unref (info);
147 }
148
149 g_object_unref (trash_monitor);
150 }
151
152 static void
schedule_update_info(CajaTrashMonitor * trash_monitor)153 schedule_update_info (CajaTrashMonitor *trash_monitor)
154 {
155 GFile *location;
156
157 location = g_file_new_for_uri ("trash:///");
158
159 g_file_query_info_async (location,
160 G_FILE_ATTRIBUTE_STANDARD_ICON,
161 0, 0, NULL,
162 update_info_cb, g_object_ref (trash_monitor));
163
164 g_object_unref (location);
165 }
166
167 static void
file_changed(GFileMonitor * monitor,GFile * child,GFile * other_file,GFileMonitorEvent event_type,gpointer user_data)168 file_changed (GFileMonitor* monitor,
169 GFile *child,
170 GFile *other_file,
171 GFileMonitorEvent event_type,
172 gpointer user_data)
173 {
174 CajaTrashMonitor *trash_monitor;
175
176 trash_monitor = CAJA_TRASH_MONITOR (user_data);
177
178 schedule_update_info (trash_monitor);
179 }
180
181 static void
caja_trash_monitor_init(CajaTrashMonitor * trash_monitor)182 caja_trash_monitor_init (CajaTrashMonitor *trash_monitor)
183 {
184 GFile *location;
185
186 trash_monitor->details = caja_trash_monitor_get_instance_private (trash_monitor);
187
188 trash_monitor->details->empty = TRUE;
189 trash_monitor->details->icon = g_themed_icon_new (CAJA_ICON_TRASH);
190
191 location = g_file_new_for_uri ("trash:///");
192
193 trash_monitor->details->file_monitor = g_file_monitor_file (location, 0, NULL, NULL);
194
195 g_signal_connect (trash_monitor->details->file_monitor, "changed",
196 (GCallback)file_changed, trash_monitor);
197
198 g_object_unref (location);
199
200 schedule_update_info (trash_monitor);
201 }
202
203 static void
unref_trash_monitor(void)204 unref_trash_monitor (void)
205 {
206 g_object_unref (caja_trash_monitor);
207 }
208
209 CajaTrashMonitor *
caja_trash_monitor_get(void)210 caja_trash_monitor_get (void)
211 {
212 if (caja_trash_monitor == NULL)
213 {
214 /* not running yet, start it up */
215
216 caja_trash_monitor = CAJA_TRASH_MONITOR
217 (g_object_new (CAJA_TYPE_TRASH_MONITOR, NULL));
218 eel_debug_call_at_shutdown (unref_trash_monitor);
219 }
220
221 return caja_trash_monitor;
222 }
223
224 gboolean
caja_trash_monitor_is_empty(void)225 caja_trash_monitor_is_empty (void)
226 {
227 CajaTrashMonitor *monitor;
228
229 monitor = caja_trash_monitor_get ();
230 return monitor->details->empty;
231 }
232
233 GIcon *
caja_trash_monitor_get_icon(void)234 caja_trash_monitor_get_icon (void)
235 {
236 CajaTrashMonitor *monitor;
237
238 monitor = caja_trash_monitor_get ();
239 if (monitor->details->icon)
240 {
241 return g_object_ref (monitor->details->icon);
242 }
243 return NULL;
244 }
245