Question

I am trying examples from here

I commented rowHeaderLayer, ColumnHeaderLayer, CornerLayer, GridLayer and directly set viewPortLayer to nattable. Tree shows up but I am not able to expand and collapse the tree though I have rowHideShowLayer.

Here is code snippet :

    EventList<Datum> eventList = GlazedLists.eventList(datums.values());
    SortedList<Datum> sortedList = new SortedList<Datum>(eventList, null);

    String[] propertyNames = new String[] { "self", "bar" };
    IColumnPropertyAccessor<Datum> columnPropertyAccessor = new ReflectiveColumnPropertyAccessor<Datum>(propertyNames);

    // Column header layer
    IDataProvider columnHeaderDataProvider = new DefaultColumnHeaderDataProvider(propertyNames);
    DataLayer columnHeaderDataLayer = new DefaultColumnHeaderDataLayer(columnHeaderDataProvider);

    ISortModel sortModel = new GlazedListsSortModel<Datum>(
            sortedList,
            columnPropertyAccessor,
            configRegistry, 
            columnHeaderDataLayer);

    final TreeList <Datum> treeList = new TreeList<Datum>(sortedList, new DatumTreeFormat(sortModel), new DatumExpansionModel());
    GlazedListTreeData <Datum> treeData = new DatumTreeData(treeList);

    GlazedListsDataProvider<Datum> bodyDataProvider = new GlazedListsDataProvider<Datum>(treeList, columnPropertyAccessor);
    final DataLayer bodyDataLayer = new DataLayer(bodyDataProvider);

    // Body layer
    ColumnReorderLayer columnReorderLayer = new ColumnReorderLayer(bodyDataLayer);
    ColumnHideShowLayer columnHideShowLayer = new ColumnHideShowLayer(columnReorderLayer);
    SelectionLayer selectionLayer = new SelectionLayer(columnHideShowLayer);

    RowHideShowLayer rowHideShowLayer = new RowHideShowLayer(selectionLayer);

    final TreeLayer treeLayer = new TreeLayer(rowHideShowLayer, new GlazedListTreeRowModel<Datum>(treeData));

    ViewportLayer viewportLayer = new ViewportLayer(treeLayer);

    NatTable natTable = new NatTable(parent, viewportLayer, false);`

Answer 1

Phew，我们的代码可以找到的地方真的很奇怪......

我不会考虑googlesource，而是在Eclipse基础架构中托管我们的源代码，而IIRC则在GitHub上复制源代码。所以更好的例子是

https://github.com/eclipse/nebula.widgets.nattable/blob/master/org.eclipse.nebula.widgets.nattable.examples/src/org/eclipse/nebula/widgets/nattable/examples/_600_GlazedLists/_604_Tree/_6041_TreeGridExample.java

关于您的问题，您不需要RowHideShowLayer，我建议将其删除。由于不使用网格组合，因此需要将必要的区域标签设置为ViewportLayer以启用已配置的UI绑定。因此，您需要在创建ViewportLayer

之后添加以下代码行

viewportLayer.setRegionName(GridRegion.BODY);

Tree Does not expand in NatTable

1 个答案: