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[vlc/davidf-public.git] / src / control / hierarchical_media_list_view.c
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1 /*****************************************************************************
2 * hierarchical_media_list_view.c: libvlc hierarchical media list view functs.
3 *****************************************************************************
4 * Copyright (C) 2007 the VideoLAN team
5 * $Id$
7 * Authors: Pierre d'Herbemont <pdherbemont # videolan.org>
9 * This program is free software; you can redistribute it and/or modify
10 * it under the terms of the GNU General Public License as published by
11 * the Free Software Foundation; either version 2 of the License, or
12 * (at your option) any later version.
14 * This program is distributed in the hope that it will be useful,
15 * but WITHOUT ANY WARRANTY; without even the implied warranty of
16 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
17 * GNU General Public License for more details.
19 * You should have received a copy of the GNU General Public License
20 * along with this program; if not, write to the Free Software
21 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston MA 02110-1301, USA.
22 *****************************************************************************/
24 #include "libvlc_internal.h"
25 #include <vlc/libvlc.h>
26 #include <assert.h>
27 #include "vlc_arrays.h"
29 //#define DEBUG_HIERARCHICAL_VIEW
31 #ifdef DEBUG_HIERARCHICAL_VIEW
32 # define trace( fmt, ... ) printf( "%s(): " fmt, __FUNCTION__, ##__VA_ARGS__ )
33 #else
34 # define trace( ... )
35 #endif
37 struct libvlc_media_list_view_private_t
39 vlc_array_t array;
43 * Private functions
46 /**************************************************************************
47 * flat_media_list_view_count (private)
48 * (called by media_list_view_count)
49 **************************************************************************/
50 static int
51 hierarch_media_list_view_count( libvlc_media_list_view_t * p_mlv,
52 libvlc_exception_t * p_e )
54 return libvlc_media_list_count( p_mlv->p_mlist, p_e );
57 /**************************************************************************
58 * flat_media_list_view_item_at_index (private)
59 * (called by flat_media_list_view_item_at_index)
60 **************************************************************************/
61 static libvlc_media_t *
62 hierarch_media_list_view_item_at_index( libvlc_media_list_view_t * p_mlv,
63 int index,
64 libvlc_exception_t * p_e )
66 return libvlc_media_list_item_at_index( p_mlv->p_mlist, index, p_e );
69 /**************************************************************************
70 * flat_media_list_view_item_at_index (private)
71 * (called by flat_media_list_view_item_at_index)
72 **************************************************************************/
73 static libvlc_media_list_view_t *
74 hierarch_media_list_view_children_at_index( libvlc_media_list_view_t * p_mlv,
75 int index,
76 libvlc_exception_t * p_e )
78 libvlc_media_t * p_md;
79 libvlc_media_list_t * p_submlist;
80 libvlc_media_list_view_t * p_ret;
81 p_md = libvlc_media_list_item_at_index( p_mlv->p_mlist, index, p_e );
82 if( !p_md ) return NULL;
83 p_submlist = libvlc_media_subitems( p_md, p_e );
84 libvlc_media_release( p_md );
85 if( !p_submlist ) return NULL;
86 p_ret = libvlc_media_list_hierarchical_view( p_submlist, p_e );
87 libvlc_media_list_release( p_submlist );
89 return p_ret;
92 /**************************************************************************
93 * media_list_(item|will)_* (private) (Event callback)
94 **************************************************************************/
95 static void
96 media_list_item_added( const libvlc_event_t * p_event, void * user_data )
98 libvlc_media_t * p_md;
99 libvlc_media_list_view_t * p_mlv = user_data;
100 int index = p_event->u.media_list_item_added.index;
101 p_md = p_event->u.media_list_item_added.item;
102 libvlc_media_list_view_item_added( p_mlv, p_md, index );
104 static void
105 media_list_will_add_item( const libvlc_event_t * p_event, void * user_data )
107 libvlc_media_t * p_md;
108 libvlc_media_list_view_t * p_mlv = user_data;
109 int index = p_event->u.media_list_will_add_item.index;
110 p_md = p_event->u.media_list_will_add_item.item;
111 libvlc_media_list_view_will_add_item( p_mlv, p_md, index );
113 static void
114 media_list_item_deleted( const libvlc_event_t * p_event, void * user_data )
116 libvlc_media_t * p_md;
117 libvlc_media_list_view_t * p_mlv = user_data;
118 int index = p_event->u.media_list_item_deleted.index;
119 p_md = p_event->u.media_list_item_deleted.item;
120 libvlc_media_list_view_item_deleted( p_mlv, p_md, index );
122 static void
123 media_list_will_delete_item( const libvlc_event_t * p_event, void * user_data )
125 libvlc_media_t * p_md;
126 libvlc_media_list_view_t * p_mlv = user_data;
127 int index = p_event->u.media_list_will_delete_item.index;
128 p_md = p_event->u.media_list_will_delete_item.item;
129 libvlc_media_list_view_will_delete_item( p_mlv, p_md, index );
133 * Public libvlc functions
137 /**************************************************************************
138 * flat_media_list_view_release (private)
139 * (called by media_list_view_release)
140 **************************************************************************/
141 static void
142 hierarch_media_list_view_release( libvlc_media_list_view_t * p_mlv )
144 libvlc_event_detach( p_mlv->p_mlist->p_event_manager,
145 libvlc_MediaListItemAdded,
146 media_list_item_added, p_mlv, NULL );
147 libvlc_event_detach( p_mlv->p_mlist->p_event_manager,
148 libvlc_MediaListWillAddItem,
149 media_list_will_add_item, p_mlv, NULL );
150 libvlc_event_detach( p_mlv->p_mlist->p_event_manager,
151 libvlc_MediaListItemDeleted,
152 media_list_item_deleted, p_mlv, NULL );
153 libvlc_event_detach( p_mlv->p_mlist->p_event_manager,
154 libvlc_MediaListWillDeleteItem,
155 media_list_will_delete_item, p_mlv, NULL );
158 /**************************************************************************
159 * libvlc_media_list_flat_view (Public)
160 **************************************************************************/
161 libvlc_media_list_view_t *
162 libvlc_media_list_hierarchical_view( libvlc_media_list_t * p_mlist,
163 libvlc_exception_t * p_e )
165 trace("\n");
166 libvlc_media_list_view_t * p_mlv;
167 p_mlv = libvlc_media_list_view_new( p_mlist,
168 hierarch_media_list_view_count,
169 hierarch_media_list_view_item_at_index,
170 hierarch_media_list_view_children_at_index,
171 libvlc_media_list_hierarchical_view,
172 hierarch_media_list_view_release,
173 NULL,
174 p_e );
175 libvlc_media_list_lock( p_mlist );
176 libvlc_event_attach( p_mlv->p_mlist->p_event_manager,
177 libvlc_MediaListItemAdded,
178 media_list_item_added, p_mlv, NULL );
179 libvlc_event_attach( p_mlv->p_mlist->p_event_manager,
180 libvlc_MediaListWillAddItem,
181 media_list_will_add_item, p_mlv, NULL );
182 libvlc_event_attach( p_mlv->p_mlist->p_event_manager,
183 libvlc_MediaListItemDeleted,
184 media_list_item_deleted, p_mlv, NULL );
185 libvlc_event_attach( p_mlv->p_mlist->p_event_manager,
186 libvlc_MediaListWillDeleteItem,
187 media_list_will_delete_item, p_mlv, NULL );
188 libvlc_media_list_unlock( p_mlist );
189 return p_mlv;