* src/playlist/playlist.c:

  - added an intf-change variable. This is set whenever you add or delete
    an item in the playlist. You need to unset it yourself.
* modules/gui/macosx/intf.?:
  - listen for external playlist changes. update view when playlist changes.
  - activate/deactivate previous and next buttons and menuitems,
    whenever the playlist gets changed.

modules/gui/macosx/intf.h

@@ -2,7 +2,7 @@
  * intf.h: MacOS X interface plugin
  *****************************************************************************
  * Copyright (C) 2002 VideoLAN
- * $Id: intf.h,v 1.25 2003/02/09 01:50:35 massiot Exp $
+ * $Id: intf.h,v 1.26 2003/02/13 00:09:51 hartman Exp $
  *
  * Authors: Jon Lech Johansen <jon-vl@nanocrew.net>
  *          Christophe Massiot <massiot@via.ecp.fr>
@@ -67,6 +67,7 @@ struct intf_sys_t
     /* interface update */
     vlc_bool_t b_intf_update;
     vlc_bool_t b_play_status;
+    vlc_bool_t b_playlist_update;
     
     /* menus handlers */
     vlc_bool_t b_chapter_update;

modules/gui/macosx/intf.m

@@ -2,7 +2,7 @@
  * intf.m: MacOS X interface plugin
  *****************************************************************************
  * Copyright (C) 2002-2003 VideoLAN
- * $Id: intf.m,v 1.54 2003/02/11 15:35:29 hartman Exp $
+ * $Id: intf.m,v 1.55 2003/02/13 00:09:51 hartman Exp $
  *
  * Authors: Jon Lech Johansen <jon-vl@nanocrew.net>
  *          Christophe Massiot <massiot@via.ecp.fr>
@@ -426,6 +426,15 @@ int ExecuteOnMainThread( id target, SEL sel, void * p_arg )
 
         if( p_playlist != NULL )
         {
+            vlc_value_t val;
+
+            if( var_Get( (vlc_object_t *)p_playlist, "intf-change", &val )
+                >= 0 && val.b_bool )
+            {
+                p_intf->p_sys->b_playlist_update = 1;
+                p_intf->p_sys->b_intf_update = VLC_TRUE;
+            }
+            
             vlc_mutex_lock( &p_playlist->object_lock );
             
             [self manage: p_playlist];
@@ -592,6 +601,17 @@ int ExecuteOnMainThread( id target, SEL sel, void * p_arg )
 
     vlc_mutex_lock( &p_playlist->object_lock );
     
+    if ( p_intf->p_sys->b_playlist_update )
+    {
+        vlc_value_t val;
+        val.b_bool = 0;
+
+        var_Set( (vlc_object_t *)p_playlist, "intf-change", val );
+
+        [o_playlist playlistUpdated];
+        p_intf->p_sys->b_playlist_update = VLC_FALSE;
+    }
+
 #define p_input p_playlist->p_input
 
     if( p_input != NULL )

src/playlist/playlist.c

@@ -2,7 +2,7 @@
  * playlist.c : Playlist management functions
  *****************************************************************************
  * Copyright (C) 1999-2001 VideoLAN
- * $Id: playlist.c,v 1.31 2003/01/29 11:34:11 jlj Exp $
+ * $Id: playlist.c,v 1.32 2003/02/13 00:09:51 hartman Exp $
  *
  * Authors: Samuel Hocevar <sam@zoy.org>
  *
@@ -55,6 +55,7 @@ static void Poubellize ( playlist_t *, input_thread_t * );
 playlist_t * __playlist_Create ( vlc_object_t *p_parent )
 {
     playlist_t *p_playlist;
+    vlc_value_t     val;
 
     /* Allocate structure */
     p_playlist = vlc_object_create( p_parent, VLC_OBJECT_PLAYLIST );
@@ -64,6 +65,10 @@ playlist_t * __playlist_Create ( vlc_object_t *p_parent )
         return NULL;
     }
 
+    var_Create( p_playlist, "intf-change", VLC_VAR_BOOL );
+    val.b_bool = VLC_TRUE;
+    var_Set( p_playlist, "intf-change", val );
+
     p_playlist->p_input = NULL;
     p_playlist->i_status = PLAYLIST_STOPPED;
     p_playlist->i_index = -1;
@@ -95,6 +100,8 @@ void playlist_Destroy( playlist_t * p_playlist )
 
     vlc_thread_join( p_playlist );
 
+    var_Destroy( p_playlist, "intf-change" );
+
     vlc_object_destroy( p_playlist );
 }
 
@@ -128,6 +135,7 @@ int playlist_Add( playlist_t *p_playlist, const char * psz_target,
 int playlist_AddItem( playlist_t *p_playlist, playlist_item_t * p_item,
                 int i_mode, int i_pos)
 {
+    vlc_value_t     val;
 
     vlc_mutex_lock( &p_playlist->object_lock );
 
@@ -237,6 +245,9 @@ int playlist_AddItem( playlist_t *p_playlist, playlist_item_t * p_item,
 
     vlc_mutex_unlock( &p_playlist->object_lock );
 
+    val.b_bool = VLC_TRUE;
+    var_Set( p_playlist, "intf-change", val );
+
     return 0;
 }
 
@@ -247,6 +258,7 @@ int playlist_AddItem( playlist_t *p_playlist, playlist_item_t * p_item,
  *****************************************************************************/
 int playlist_Delete( playlist_t * p_playlist, int i_pos )
 {
+    vlc_value_t     val;
     vlc_mutex_lock( &p_playlist->object_lock );
 
     if( i_pos >= 0 && i_pos < p_playlist->i_size )
@@ -279,6 +291,9 @@ int playlist_Delete( playlist_t * p_playlist, int i_pos )
 
     vlc_mutex_unlock( &p_playlist->object_lock );
 
+    val.b_bool = VLC_TRUE;
+    var_Set( p_playlist, "intf-change", val );
+
     return 0;
 }