a8cb3bfdff4702a9f638c885511035ee425fc4be,desktop/ui/src/main/java/org/datacleaner/windows/ExcelDatastoreDialog.java,ExcelDatastoreDialog,ExcelDatastoreDialog,#ExcelDatastore#MutableDatastoreCatalog#WindowContext#UserPreferences#,49

Before Change


		super(originalDatastore, mutableDatastoreCatalog, windowContext, userPreferences);

		if (originalDatastore != null){
		    _columnNamesWidget = new CustomColumnNamesWidget(originalDatastore.getCustomColumnNames());
		} else{
		    _columnNamesWidget = new CustomColumnNamesWidget(null); 
		}

After Change


        _addColumnNamesButton = WidgetFactory.createDefaultButton("Add", IconUtils.ACTION_RENAME);

        if (originalDatastore != null) {
            _columnNames = originalDatastore.getCustomColumnNames();
            _addColumnNamesButton.setEnabled(true);
        } else {
            _columnNames = null;