QT4: implement the open dialog from the playlist

modules/gui/qt4/dialogs/open.cpp

@@ -148,6 +148,10 @@ void OpenDialog::setMenuAction()
             playButton->setText( qtr("&Convert / Save") );
             BUTTONACT( playButton, stream( true ) );
             break;
+        case ENQUEUE:
+            playButton->setText( qtr("&Enqueue") );
+            BUTTONACT( playButton, enqueue() );
+            break;
         case OPEN_AND_PLAY:
         default:
             playButton->setText( qtr("&Play") );

modules/gui/qt4/dialogs_provider.cpp

@@ -216,6 +216,9 @@ void DialogsProvider::openDialog( int i_tab )
 
 void DialogsProvider::PLAppendDialog()
 {
+    
+    OpenDialog::getInstance( p_intf->p_sys->p_mi , p_intf, ENQUEUE )
+        ->showTab(0);
 }
 void DialogsProvider::MLAppendDialog()
 {

modules/gui/qt4/dialogs_provider.hpp

@@ -78,6 +78,7 @@
 #define OPEN_AND_PLAY           0x0
 #define OPEN_AND_STREAM         0x1
 #define OPEN_AND_SAVE           0x2
+#define ENQUEUE                 0x4
 
 class QEvent;
 class QSignalMapper;