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 <vlc/libvlc.h>
  25 #include <vlc/libvlc_media.h>
  26 #include <vlc/libvlc_media_list.h>
  27 #include <vlc/libvlc_media_list_view.h>
  28
  29 #include "media_list_internal.h"
  30 #include "media_list_view_internal.h"
  31
  32 //#define DEBUG_HIERARCHICAL_VIEW
  33
  34 #ifdef DEBUG_HIERARCHICAL_VIEW
  35 # define trace( fmt, ... ) printf( "%s(): " fmt, __FUNCTION__, ##__VA_ARGS__ )
  36 #else
  37 # define trace( ... )
  38 #endif
  39
  40 /*
  41  * Private functions
  42  */
  43
  44 /**************************************************************************
  45  *       flat_media_list_view_count  (private)
  46  * (called by media_list_view_count)
  47  **************************************************************************/
  48 static int
  49 hierarch_media_list_view_count( libvlc_media_list_view_t * p_mlv,
  50                                 libvlc_exception_t * p_e )
  51 {
  52     return libvlc_media_list_count( p_mlv->p_mlist, p_e );
  53 }
  54
  55 /**************************************************************************
  56  *       flat_media_list_view_item_at_index  (private)
  57  * (called by flat_media_list_view_item_at_index)
  58  **************************************************************************/
  59 static libvlc_media_t *
  60 hierarch_media_list_view_item_at_index( libvlc_media_list_view_t * p_mlv,
  61                                     int index,
  62                                     libvlc_exception_t * p_e )
  63 {
  64     return libvlc_media_list_item_at_index( p_mlv->p_mlist, index, p_e );
  65 }
  66
  67 /**************************************************************************
  68  *       flat_media_list_view_item_at_index  (private)
  69  * (called by flat_media_list_view_item_at_index)
  70  **************************************************************************/
  71 static libvlc_media_list_view_t *
  72 hierarch_media_list_view_children_at_index( libvlc_media_list_view_t * p_mlv,
  73                                         int index,
  74                                         libvlc_exception_t * p_e )
  75 {
  76     libvlc_media_t * p_md;
  77     libvlc_media_list_t * p_submlist;
  78     libvlc_media_list_view_t * p_ret;
  79     p_md = libvlc_media_list_item_at_index( p_mlv->p_mlist, index, p_e );
  80     if( !p_md ) return NULL;
  81     p_submlist = libvlc_media_subitems( p_md, p_e );
  82     libvlc_media_release( p_md );
  83     if( !p_submlist ) return NULL;
  84     p_ret = libvlc_media_list_hierarchical_view( p_submlist, p_e );
  85     libvlc_media_list_release( p_submlist );
  86
  87     return p_ret;
  88 }
  89
  90 /**************************************************************************
  91  *       media_list_(item|will)_* (private) (Event callback)
  92  **************************************************************************/
  93 static void
  94 media_list_item_added( const libvlc_event_t * p_event, void * user_data )
  95 {
  96     libvlc_media_t * p_md;
  97     libvlc_media_list_view_t * p_mlv = user_data;
  98     int index = p_event->u.media_list_item_added.index;
  99     p_md = p_event->u.media_list_item_added.item;
 100     libvlc_media_list_view_item_added( p_mlv, p_md, index );
 101 }
 102 static void
 103 media_list_will_add_item( const libvlc_event_t * p_event, void * user_data )
 104 {
 105     libvlc_media_t * p_md;
 106     libvlc_media_list_view_t * p_mlv = user_data;
 107     int index = p_event->u.media_list_will_add_item.index;
 108     p_md = p_event->u.media_list_will_add_item.item;
 109     libvlc_media_list_view_will_add_item( p_mlv, p_md, index );
 110 }
 111 static void
 112 media_list_item_deleted( const libvlc_event_t * p_event, void * user_data )
 113 {
 114     libvlc_media_t * p_md;
 115     libvlc_media_list_view_t * p_mlv = user_data;
 116     int index = p_event->u.media_list_item_deleted.index;
 117     p_md = p_event->u.media_list_item_deleted.item;
 118     libvlc_media_list_view_item_deleted( p_mlv, p_md, index );
 119 }
 120 static void
 121 media_list_will_delete_item( const libvlc_event_t * p_event, void * user_data )
 122 {
 123     libvlc_media_t * p_md;
 124     libvlc_media_list_view_t * p_mlv = user_data;
 125     int index = p_event->u.media_list_will_delete_item.index;
 126     p_md = p_event->u.media_list_will_delete_item.item;
 127     libvlc_media_list_view_will_delete_item( p_mlv, p_md, index );
 128 }
 129
 130 /*
 131  * Public libvlc functions
 132  */
 133
 134
 135 /**************************************************************************
 136  *       flat_media_list_view_release (private)
 137  * (called by media_list_view_release)
 138  **************************************************************************/
 139 static void
 140 hierarch_media_list_view_release( libvlc_media_list_view_t * p_mlv )
 141 {
 142     libvlc_event_detach( p_mlv->p_mlist->p_event_manager,
 143                          libvlc_MediaListItemAdded,
 144                          media_list_item_added, p_mlv, NULL );
 145     libvlc_event_detach( p_mlv->p_mlist->p_event_manager,
 146                          libvlc_MediaListWillAddItem,
 147                          media_list_will_add_item, p_mlv, NULL );
 148     libvlc_event_detach( p_mlv->p_mlist->p_event_manager,
 149                          libvlc_MediaListItemDeleted,
 150                          media_list_item_deleted, p_mlv, NULL );
 151     libvlc_event_detach( p_mlv->p_mlist->p_event_manager,
 152                          libvlc_MediaListWillDeleteItem,
 153                          media_list_will_delete_item, p_mlv, NULL );
 154 }
 155
 156 /**************************************************************************
 157  *       libvlc_media_list_flat_view (Public)
 158  **************************************************************************/
 159 libvlc_media_list_view_t *
 160 libvlc_media_list_hierarchical_view( libvlc_media_list_t * p_mlist,
 161                                      libvlc_exception_t * p_e )
 162 {
 163     trace("\n");
 164     libvlc_media_list_view_t * p_mlv;
 165     p_mlv = libvlc_media_list_view_new( p_mlist,
 166                                         hierarch_media_list_view_count,
 167                                         hierarch_media_list_view_item_at_index,
 168                                         hierarch_media_list_view_children_at_index,
 169                                         libvlc_media_list_hierarchical_view,
 170                                         hierarch_media_list_view_release,
 171                                         NULL,
 172                                         p_e );
 173     libvlc_media_list_lock( p_mlist );
 174     libvlc_event_attach( p_mlv->p_mlist->p_event_manager,
 175                          libvlc_MediaListItemAdded,
 176                          media_list_item_added, p_mlv, NULL );
 177     libvlc_event_attach( p_mlv->p_mlist->p_event_manager,
 178                          libvlc_MediaListWillAddItem,
 179                          media_list_will_add_item, p_mlv, NULL );
 180     libvlc_event_attach( p_mlv->p_mlist->p_event_manager,
 181                          libvlc_MediaListItemDeleted,
 182                          media_list_item_deleted, p_mlv, NULL );
 183     libvlc_event_attach( p_mlv->p_mlist->p_event_manager,
 184                          libvlc_MediaListWillDeleteItem,
 185                          media_list_will_delete_item, p_mlv, NULL );
 186     libvlc_media_list_unlock( p_mlist );
 187     return p_mlv;
 188 }