Qt4: don't create multiple playlist models

modules/gui/qt4/components/playlist/playlist.cpp

@@ -90,7 +90,7 @@ PlaylistWidget::PlaylistWidget( intf_thread_t *_p_i, QWidget *_par )
     setMinimumWidth( 300 );
 
     PLModel *model = new PLModel( p_playlist, p_intf, p_root, this );
-    mainView = new StandardPLPanel( this, p_intf, THEPL, p_root, selector );
+    mainView = new StandardPLPanel( this, p_intf, THEPL, p_root, selector, model );
 
     /* Location Bar */
     locationBar = new LocationBar( model );

modules/gui/qt4/components/playlist/standardpanel.cpp

@@ -59,7 +59,9 @@ StandardPLPanel::StandardPLPanel( PlaylistWidget *_parent,
                                   intf_thread_t *_p_intf,
                                   playlist_t *p_playlist,
                                   playlist_item_t *p_root,
-                                  PLSelector *_p_selector ):
+                                  PLSelector *_p_selector,
+                                  PLModel *_p_model
+                                  ):
                                   QWidget( _parent ), p_intf( _p_intf ),
                                   p_selector( _p_selector )
 {
@@ -73,7 +75,7 @@ StandardPLPanel::StandardPLPanel( PlaylistWidget *_parent,
     viewStack = new QStackedLayout();
     layout->addLayout( viewStack, 1, 0, 1, -1 );
 
-    model = new PLModel( p_playlist, p_intf, p_root, this );
+    model = _p_model;
     currentRootId = -1;
     currentRootIndexId = -1;
     lastActivatedId = -1;

modules/gui/qt4/components/playlist/standardpanel.hpp

@@ -59,7 +59,7 @@ class StandardPLPanel: public QWidget
 
 public:
     StandardPLPanel( PlaylistWidget *, intf_thread_t *,
-                     playlist_t *, playlist_item_t *, PLSelector * );
+                     playlist_t *, playlist_item_t *, PLSelector *, PLModel * );
     virtual ~StandardPLPanel();
 protected:
     friend class PlaylistWidget;