1 /*
2 * nemo-info-provider.c - Interface for Nemo extensions that
3 * provide info about files.
4 *
5 * Copyright (C) 2003 Novell, Inc.
6 *
7 * This library is free software; you can redistribute it and/or
8 * modify it under the terms of the GNU Library General Public
9 * License as published by the Free Software Foundation; either
10 * version 2 of the License, or (at your option) any later version.
11 *
12 * This library is distributed in the hope that it will be useful,
13 * but WITHOUT ANY WARRANTY; without even the implied warranty of
14 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
15 * Library General Public License for more details.
16 *
17 * You should have received a copy of the GNU Library General Public
18 * License along with this library; if not, write to the Free
19 * Software Foundation, Inc., 51 Franklin Street, Suite 500, MA 02110-1335, USA.
20 *
21 * Author: Dave Camp <dave@ximian.com>
22 *
23 */
24
25 #include <config.h>
26 #include "nemo-info-provider.h"
27
28 #include <glib-object.h>
29
G_DEFINE_INTERFACE(NemoInfoProvider,nemo_info_provider,G_TYPE_OBJECT)30 G_DEFINE_INTERFACE (NemoInfoProvider, nemo_info_provider, G_TYPE_OBJECT)
31
32 /**
33 * SECTION:nemo-info-provider
34 * @Title: NemoInfoProvider
35 * @Short_description: An interface to allow collection of additional file info.
36 *
37 * This interface can be used to collect additional file info, generally used
38 * together with a #NemoColumnProvider. It can be used as a synchronous or async
39 * interface.
40 *
41 * Additional, it can act in the background and notify Nemo when information has
42 * changed from some external source.
43 **/
44
45 static void
46 nemo_info_provider_default_init (NemoInfoProviderInterface *klass)
47 {
48 }
49
50 NemoOperationResult
nemo_info_provider_update_file_info(NemoInfoProvider * provider,NemoFileInfo * file,GClosure * update_complete,NemoOperationHandle ** handle)51 nemo_info_provider_update_file_info (NemoInfoProvider *provider,
52 NemoFileInfo *file,
53 GClosure *update_complete,
54 NemoOperationHandle **handle)
55 {
56 g_return_val_if_fail (NEMO_IS_INFO_PROVIDER (provider),
57 NEMO_OPERATION_FAILED);
58 g_return_val_if_fail (NEMO_INFO_PROVIDER_GET_IFACE (provider)->update_file_info != NULL,
59 NEMO_OPERATION_FAILED);
60 g_return_val_if_fail (update_complete != NULL,
61 NEMO_OPERATION_FAILED);
62 g_return_val_if_fail (handle != NULL, NEMO_OPERATION_FAILED);
63
64 return NEMO_INFO_PROVIDER_GET_IFACE (provider)->update_file_info
65 (provider, file, update_complete, handle);
66 }
67
68 void
nemo_info_provider_cancel_update(NemoInfoProvider * provider,NemoOperationHandle * handle)69 nemo_info_provider_cancel_update (NemoInfoProvider *provider,
70 NemoOperationHandle *handle)
71 {
72 g_return_if_fail (NEMO_IS_INFO_PROVIDER (provider));
73 g_return_if_fail (NEMO_INFO_PROVIDER_GET_IFACE (provider)->cancel_update != NULL);
74 g_return_if_fail (handle != NULL);
75
76 NEMO_INFO_PROVIDER_GET_IFACE (provider)->cancel_update (provider,
77 handle);
78 }
79
80 void
nemo_info_provider_update_complete_invoke(GClosure * update_complete,NemoInfoProvider * provider,NemoOperationHandle * handle,NemoOperationResult result)81 nemo_info_provider_update_complete_invoke (GClosure *update_complete,
82 NemoInfoProvider *provider,
83 NemoOperationHandle *handle,
84 NemoOperationResult result)
85 {
86 GValue args[3] = { { 0, } };
87 GValue return_val = { 0, };
88
89 g_return_if_fail (update_complete != NULL);
90 g_return_if_fail (NEMO_IS_INFO_PROVIDER (provider));
91
92 g_value_init (&args[0], NEMO_TYPE_INFO_PROVIDER);
93 g_value_init (&args[1], G_TYPE_POINTER);
94 g_value_init (&args[2], G_TYPE_INT);
95
96 g_value_set_object (&args[0], provider);
97 g_value_set_pointer (&args[1], handle);
98 g_value_set_int (&args[2], result);
99
100 g_closure_invoke (update_complete, &return_val, 3, args, NULL);
101
102 g_value_unset (&args[0]);
103 g_value_unset (&args[1]);
104 g_value_unset (&args[2]);
105 }
106
107