git.sesse.net Git - vlc/blob - src/control/hierarchical_media_list_view.c

   1 /*****************************************************************************
   2  * hierarchical_media_list_view.c: libvlc hierarchical media list view functs.
   3  *****************************************************************************
   4  * Copyright (C) 2007 the VideoLAN team
   5  * $Id$
   6  *
   7  * Authors: Pierre d'Herbemont <pdherbemont # videolan.org>
   8  *
   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.
  13  *
  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.
  18  *
  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  *****************************************************************************/
  23
  24 #include "libvlc_internal.h"
  25 #include <vlc/libvlc.h>
  26 #include <assert.h>
  27 #include "vlc_arrays.h"
  28
  29 //#define DEBUG_HIERARCHICAL_VIEW
  30
  31 #ifdef DEBUG_HIERARCHICAL_VIEW
  32 # define trace( fmt, ... ) printf( "%s(): " fmt, __FUNCTION__, ##__VA_ARGS__ )
  33 #else
  34 # define trace( ... )
  35 #endif
  36
  37 struct libvlc_media_list_view_private_t
  38 {
  39     vlc_array_t array;
  40 };
  41
  42 /*
  43  * Private functions
  44  */
  45
  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 )
  53 {
  54     return libvlc_media_list_count( p_mlv->p_mlist, p_e );
  55 }
  56
  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_descriptor_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 )
  65 {
  66     return libvlc_media_list_item_at_index( p_mlv->p_mlist, index, p_e );
  67 }
  68
  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 )
  77 {
  78     libvlc_media_descriptor_t * p_md;
  79     libvlc_media_list_t * p_submlist;
  80     p_md = libvlc_media_list_item_at_index( p_mlv->p_mlist, index, p_e );
  81     if( !p_md ) return NULL;
  82     p_submlist = libvlc_media_descriptor_subitems( p_md, p_e );
  83     if( !p_submlist ) return NULL;
  84     return libvlc_media_list_hierarchical_view( p_submlist, p_e );
  85 }
  86
  87 /**************************************************************************
  88  *       media_list_(item|will)_* (private) (Event callback)
  89  **************************************************************************/
  90 static void
  91 media_list_item_added( const libvlc_event_t * p_event, void * user_data )
  92 {
  93     libvlc_media_descriptor_t * p_md;
  94     libvlc_media_list_view_t * p_mlv = user_data;
  95     int index = p_event->u.media_list_item_added.index;
  96     p_md = p_event->u.media_list_item_added.item;
  97     libvlc_media_list_view_item_added( p_mlv, p_md, index );
  98 }
  99 static void
 100 media_list_will_add_item( const libvlc_event_t * p_event, void * user_data )
 101 {
 102     libvlc_media_descriptor_t * p_md;
 103     libvlc_media_list_view_t * p_mlv = user_data;
 104     int index = p_event->u.media_list_will_add_item.index;
 105     p_md = p_event->u.media_list_will_add_item.item;
 106     libvlc_media_list_view_will_add_item( p_mlv, p_md, index );
 107 }
 108 static void
 109 media_list_item_deleted( const libvlc_event_t * p_event, void * user_data )
 110 {
 111     libvlc_media_descriptor_t * p_md;
 112     libvlc_media_list_view_t * p_mlv = user_data;
 113     int index = p_event->u.media_list_item_deleted.index;
 114     p_md = p_event->u.media_list_item_deleted.item;
 115     libvlc_media_list_view_item_deleted( p_mlv, p_md, index );
 116 }
 117 static void
 118 media_list_will_delete_item( const libvlc_event_t * p_event, void * user_data )
 119 {
 120     libvlc_media_descriptor_t * p_md;
 121     libvlc_media_list_view_t * p_mlv = user_data;
 122     int index = p_event->u.media_list_will_delete_item.index;
 123     p_md = p_event->u.media_list_will_delete_item.item;
 124     libvlc_media_list_view_will_delete_item( p_mlv, p_md, index );
 125 }
 126
 127 /*
 128  * Public libvlc functions
 129  */
 130
 131
 132 /**************************************************************************
 133  *       flat_media_list_view_release (private)
 134  * (called by media_list_view_release)
 135  **************************************************************************/
 136 static void
 137 hierarch_media_list_view_release( libvlc_media_list_view_t * p_mlv )
 138 {
 139     libvlc_event_detach( p_mlv->p_mlist->p_event_manager,
 140                          libvlc_MediaListItemAdded,
 141                          media_list_item_added, p_mlv, NULL );
 142     libvlc_event_detach( p_mlv->p_mlist->p_event_manager,
 143                          libvlc_MediaListWillAddItem,
 144                          media_list_will_add_item, p_mlv, NULL );
 145     libvlc_event_detach( p_mlv->p_mlist->p_event_manager,
 146                          libvlc_MediaListItemDeleted,
 147                          media_list_item_deleted, p_mlv, NULL );
 148     libvlc_event_detach( p_mlv->p_mlist->p_event_manager,
 149                          libvlc_MediaListWillDeleteItem,
 150                          media_list_will_delete_item, p_mlv, NULL );
 151 }
 152
 153 /**************************************************************************
 154  *       libvlc_media_list_flat_view (Public)
 155  **************************************************************************/
 156 libvlc_media_list_view_t *
 157 libvlc_media_list_hierarchical_view( libvlc_media_list_t * p_mlist,
 158                                      libvlc_exception_t * p_e )
 159 {
 160     trace("\n");
 161     libvlc_media_list_view_t * p_mlv;
 162     p_mlv = libvlc_media_list_view_new( p_mlist,
 163                                         hierarch_media_list_view_count,
 164                                         hierarch_media_list_view_item_at_index,
 165                                         hierarch_media_list_view_children_at_index,
 166                                         hierarch_media_list_view_release,
 167                                         NULL,
 168                                         p_e );
 169     libvlc_media_list_lock( p_mlist );
 170     libvlc_event_attach( p_mlv->p_mlist->p_event_manager,
 171                          libvlc_MediaListItemAdded,
 172                          media_list_item_added, p_mlv, NULL );
 173     libvlc_event_attach( p_mlv->p_mlist->p_event_manager,
 174                          libvlc_MediaListWillAddItem,
 175                          media_list_will_add_item, p_mlv, NULL );
 176     libvlc_event_attach( p_mlv->p_mlist->p_event_manager,
 177                          libvlc_MediaListItemDeleted,
 178                          media_list_item_deleted, p_mlv, NULL );
 179     libvlc_event_attach( p_mlv->p_mlist->p_event_manager,
 180                          libvlc_MediaListWillDeleteItem,
 181                          media_list_will_delete_item, p_mlv, NULL );
 182     libvlc_media_list_unlock( p_mlist );
 183     return p_mlv;
 184 }