如何在 Nebula NatTable 中显示行号

Question

我可以使用这些代码向 NatTable 显示 CSV 内容：

IDataProvider bodyDataProvider = ...;

DataLayer bodyDataLayer = new DataLayer(bodyDataProvider);
SelectionLayer selectionLayer = new SelectionLayer(bodyDataLayer);
ViewportLayer viewportLayer = new ViewportLayer(selectionLayer);
viewportLayer.setRegionName(GridRegion.BODY);

natTable.setLayer(viewportLayer);

我们如何显示行号？我尝试使用GridLayer，但没有列标题。请帮忙！

Answer 1

我解决了这个问题。我用CompositeLayer：

IDataProvider rowHeaderDataProvider = new DefaultRowHeaderDataProvider(bodyDataProvider);
DataLayer rowHeaderDataLayer = new DataLayer(rowHeaderDataProvider);
ILayer rowHeaderLayer = new RowHeaderLayer(
                    rowHeaderDataLayer,
                    viewportLayer,
                    selectionLayer);
CompositeLayer compositeLayer = new CompositeLayer(2, 1);
compositeLayer.setChildLayer(GridRegion.ROW_HEADER, rowHeaderLayer, 0, 0);
compositeLayer.setChildLayer(GridRegion.BODY, viewportLayer, 1, 0);
natTable.setLayer(compositeLayer);