Examples of org.eclipse.nebula.widgets.nattable.data.AutomaticSpanningDataProvider

org.eclipse.nebula.widgets.nattable.data.AutomaticSpanningDataProvider

This implementation of ISpanningDataProvider will automatically span cells if the containing cell values are equal. It supports configuration whether the automatic spanning should be performed for columns or cells. It is even possible to configure which columns/rows should be checked for auto spanning.

It wraps the IDataProvider that is used for providing the data to the NatTable, so it is possible to use existing code and enhance it easily with the auto spanning feature.

To use the auto spanning feature you simply need to exchange the DataLayer in your layer composition with the SpanningDataLayer and wrap the exising IDataProvider with this AutomaticSpanningDataProvider.

Note:
Mixing of automatic column and row spanning could cause several rendering issues if there can be no rectangle build out of matching cell values. If a mixing is needed, a more complicated calculation algorithm need to be implemented that checks every columns and row by building the spanning cell for the matching rectangle. As this would be quite time consuming calculations, this is not supported out of the box by NatTable. @author Dirk Fauth


        IColumnPropertyAccessor<NumberValues> cpa = new ReflectiveColumnPropertyAccessor<NumberValues>(
                propertyNames);
        IDataProvider dataProvider = new ListDataProvider<NumberValues>(
                createNumberValueList(), cpa);
        AutomaticSpanningDataProvider spanningDataProvider = new AutomaticSpanningDataProvider(
                dataProvider, true, false);


        // spanningDataProvider.addAutoSpanningColumnPositions(0, 1, 2);
        // spanningDataProvider.addAutoSpanningColumnPositions(2, 3, 4);
        // spanningDataProvider.addAutoSpanningColumnPositions(0, 1, 3, 4);

Examples of org.eclipse.nebula.widgets.nattable.data.AutomaticSpanningDataProvider

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