Qt: move getDirectoryDialog to a static helper

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

@@ -358,7 +358,7 @@ void StandardPLPanel::popupAction( QAction *action )
         break;
 
     case VLCModelSubInterface::ACTION_ENQUEUEDIR:
-        temp = THEDP->getDirectoryDialog();
+        temp = DialogsProvider::getDirectoryDialog( p_intf );
         if ( temp.isEmpty() ) return;
         a.uris << temp;
         action->setData( QVariant::fromValue( a ) );

modules/gui/qt4/dialogs_provider.cpp

@@ -514,9 +514,10 @@ static void openDirectory( intf_thread_t *p_intf, bool pl, bool go )
     Open::openMRL( p_intf, uri, go, pl );
 }
 
-QString DialogsProvider::getDirectoryDialog()
+QString DialogsProvider::getDirectoryDialog( intf_thread_t *p_intf )
 {
-    QString dir = QFileDialog::getExistingDirectory( NULL, qtr( I_OP_DIR_WINTITLE ), p_intf->p_sys->filepath );
+    QString dir = QFileDialog::getExistingDirectory( NULL,
+            qtr( I_OP_DIR_WINTITLE ), p_intf->p_sys->filepath );
 
     if( dir.isEmpty() ) return QString();
 

modules/gui/qt4/dialogs_provider.hpp

@@ -90,6 +90,8 @@ public:
                                 EXT_FILTER_PLAYLIST,
                                 const QString& path = QString() );
     bool isDying() { return b_isDying; }
+    static QString getDirectoryDialog( intf_thread_t *p_intf);
+
 protected:
     QSignalMapper *menusMapper;
     QSignalMapper *menusUpdateMapper;
@@ -143,7 +145,6 @@ public slots:
     void openNetDialog();
     void openCaptureDialog();
 
-    QString getDirectoryDialog();
     void PLAppendDialog( int tab = OPEN_FILE_TAB );
     void MLAppendDialog( int tab = OPEN_FILE_TAB );