FilterTreeGridExample.java
public class FilterTreeGridExample extends AbstractNatExample {

	protected static final String NO_SORT_LABEL = "noSortLabel";
	
	public static void main(String[] args) {
		StandaloneNatExampleRunner.run(800, 400, new FilterTreeGridExample());
	}
	
	public Control createExampleControl(Composite parent) {
		ConfigRegistry configRegistry = new ConfigRegistry();
		configRegistry.registerConfigAttribute(SortConfigAttributes.SORT_COMPARATOR, new DefaultComparator());
		
		// Underlying data source
		createDatums();
		EventList<Datum> eventList = GlazedLists.eventList(datums.values());
		SortedList<Datum> sortedList = new SortedList<Datum>(eventList, null);
//		TreeList <RowDataFixture> treeList = new TreeList<RowDataFixture>(eventList, new RowDataFixtureTreeFormat(), new RowDataFixtureExpansionModel());
		
		String[] propertyNames = new String[] { "foo", "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);

		//-----------START: CODE TO SUPPORT FILTER -----------//
		//Create filter
		TextFilterator textFilterator = new TextFilterator<Datum>()
        {
			public void getFilterStrings(List<String> arg0, Datum arg1)
			{
				arg0.add( arg1.foo );
			}
        };
        CompositeMatcherEditor groupMatcherEditor = new CompositeMatcherEditor<Datum>();
        groupMatcherEditor.setMode( CompositeMatcherEditor.OR );

        TextMatcherEditor matcher1 = new TextMatcherEditor<Datum>(
                textFilterator );
        matcher1.setMode( TextMatcherEditor.CONTAINS );
        matcher1.setFilterText( new String[] { "A" } );
        TextMatcherEditor matcher2 = new TextMatcherEditor<Datum>(
                textFilterator );
        matcher2.setMode( TextMatcherEditor.EXACT );
        matcher2.setFilterText( new String[] { "C.1" } );
        TextMatcherEditor matcher3 = new TextMatcherEditor<Datum>(
                textFilterator );
        matcher3.setMode( TextMatcherEditor.EXACT );
        matcher3.setFilterText( new String[] { "root2" } );
        TextMatcherEditor matcher4 = new TextMatcherEditor<Datum>(
                textFilterator );
        matcher4.setMode( TextMatcherEditor.CONTAINS );
        matcher4.setFilterText( new String[] { "Y" } );

        groupMatcherEditor.getMatcherEditors().add( matcher1 );
        groupMatcherEditor.getMatcherEditors().add( matcher2 );
        groupMatcherEditor.getMatcherEditors().add( matcher3 );
        groupMatcherEditor.getMatcherEditors().add( matcher4 );

        EventList<MatcherEditor<Datum>> matcherEditors = new BasicEventList<MatcherEditor<Datum>>();
        matcherEditors.add( groupMatcherEditor );

        CompositeMatcherEditor filterMatcherEditor = new CompositeMatcherEditor<Datum>();
        filterMatcherEditor.getMatcherEditors().addAll( matcherEditors );
        filterMatcherEditor.setMode( CompositeMatcherEditor.OR );

        FilterList<Datum> filterList = new FilterList<Datum>( treeList );
		filterList.setMatcherEditor( filterMatcherEditor );
		//-----------END: CODE TO SUPPORT FILTER -----------//

		GlazedListsDataProvider<Datum> bodyDataProvider = new GlazedListsDataProvider<Datum>(filterList, columnPropertyAccessor);
		DataLayer bodyDataLayer = new DataLayer(bodyDataProvider);
		
		// Body layer
		ColumnReorderLayer columnReorderLayer = new ColumnReorderLayer(bodyDataLayer);
		ColumnHideShowLayer columnHideShowLayer = new ColumnHideShowLayer(columnReorderLayer);
		SelectionLayer selectionLayer = new SelectionLayer(columnHideShowLayer);
		
		// Switch the ITreeRowModel implementation between using native grid Hide/Show or GlazedList TreeList Hide/Show  
//		TreeLayer treeLayer = new TreeLayer(selectionLayer, new TreeRowModel<Datum>(treeData), true);
		TreeLayer treeLayer = new TreeLayer(selectionLayer, new GlazedListTreeRowModel<Datum>(treeData), false);
		
		ViewportLayer viewportLayer = new ViewportLayer(treeLayer);
		
		
		ColumnHeaderLayer columnHeaderLayer = new ColumnHeaderLayer(columnHeaderDataLayer, viewportLayer, selectionLayer);
		//	Note: The column header layer is wrapped in a filter row composite.
		//	This plugs in the filter row functionality
	

		ColumnOverrideLabelAccumulator labelAccumulator = new ColumnOverrideLabelAccumulator(columnHeaderDataLayer);
		columnHeaderDataLayer.setConfigLabelAccumulator(labelAccumulator);

		// Register labels
		SortHeaderLayer<Datum> sortHeaderLayer = new SortHeaderLayer<Datum>(
				columnHeaderLayer, 
				sortModel, 
				false);

		// Row header layer
		DefaultRowHeaderDataProvider rowHeaderDataProvider = new DefaultRowHeaderDataProvider(bodyDataProvider);
		DefaultRowHeaderDataLayer rowHeaderDataLayer = new DefaultRowHeaderDataLayer(rowHeaderDataProvider);
		RowHeaderLayer rowHeaderLayer = new RowHeaderLayer(rowHeaderDataLayer, viewportLayer, selectionLayer);

		// Corner layer
		DefaultCornerDataProvider cornerDataProvider = new DefaultCornerDataProvider(columnHeaderDataProvider, rowHeaderDataProvider);
		DataLayer cornerDataLayer = new DataLayer(cornerDataProvider);
//		CornerLayer cornerLayer = new CornerLayer(cornerDataLayer, rowHeaderLayer, columnHeaderLayer);
		CornerLayer cornerLayer = new CornerLayer(cornerDataLayer, rowHeaderLayer, sortHeaderLayer);

		// Grid
		GridLayer gridLayer = new GridLayer(
				viewportLayer,
//				columnHeaderLayer,
				sortHeaderLayer,
				rowHeaderLayer,
				cornerLayer);
		
		NatTable natTable = new NatTable(parent, gridLayer, false);
		natTable.setConfigRegistry(configRegistry);
		natTable.addConfiguration(new DefaultNatTableStyleConfiguration());
		natTable.addConfiguration(new HeaderMenuConfiguration(natTable));
		natTable.addConfiguration(new DefaultTreeLayerConfiguration(treeLayer.getModel()));
		natTable.addConfiguration(new SingleClickSortConfiguration());
		
		// Uncomment to see the native tree list printed to stout.
//		printTree(treeList, treeData);
		
		natTable.configure();
		return natTable;
	}

	private static class DatumTreeData extends GlazedListTreeData<Datum>{

		public DatumTreeData(TreeList<Datum> treeList) {
			super(treeList);
		}

		@Override
		public String formatDataForDepth(int depth, Datum object) {
			return object.getFoo();
		}

		
	}
	
	private static class DatumTreeFormat implements TreeList.Format<Datum> {
		
		private final ISortModel sortModel;

		public DatumTreeFormat(ISortModel sortModel) {
			this.sortModel = sortModel;
		}
		
		public void getPath(List<Datum> path, Datum element) {
			path.add(element);
			Datum parent = element.getParent();
			while (parent != null) {
				path.add(parent);
				parent = parent.getParent();
			}
			Collections.reverse(path);
		}
		
		public boolean allowsChildren(Datum element) {
			return true;
		}

		public Comparator<? extends Datum> getComparator(int depth) {
			return new SortableTreeComparator<Datum>(GlazedLists.beanPropertyComparator(Datum.class, "foo"), sortModel);
		}
	}

	private static class DatumExpansionModel implements TreeList.ExpansionModel<Datum> {
		public boolean isExpanded(Datum element, List<Datum> path) {
			return true;
		}

		public void setExpanded(Datum element,	List<Datum> path, boolean expanded) {
		}
	}
	
	private void printTree(TreeList <Datum> treeList, ITreeData<Datum> treeData){
		System.out.println(treeList.size());
		   for (int i = 0; i < treeList.size(); i++) {
	            final Datum location = treeList.get(i);
	            final int depth = treeList.depth(i);
	            final boolean hasChildren = treeList.hasChildren(i);
	            final boolean isExpanded = treeList.isExpanded(i);

	            for (int j = 0; j < depth; j++)
	                System.out.print("\t");

	            if (hasChildren)
	                System.out.print(isExpanded ? "- " : "+ ");
	            else
	                System.out.print("  ");

	            System.out.println(treeData.formatDataForDepth(depth, location));
	        }
	}
	
	public class Datum {
		/**
		 * 
		 */
		private final Datum parent;
		private String foo;
		private int bar;
		
		public Datum(Datum parent, String foo, int bar) {
			this.parent = parent;
			this.foo = foo;
			this.bar = bar;
		}
		
		public Datum getParent() {
			return parent;
		}
		
		public String getFoo() {
			return foo;
		}
		
		public int getBar() {
			return bar;
		}
		
		@Override
		public String toString() {
			return "[" +
					"parent=" + parent +
					", foo=" + foo +
					", bar=" + bar +
					"]";
		}
		
	}
	
	private Map<String, Datum> datums = new HashMap<String, Datum>();
	
	private void createDatum(String parent, String foo, int bar) {
		Datum datum = new Datum(datums.get(parent), foo, bar);
		datums.put(foo, datum);
	}
	
	private void createDatums() {
		createDatum(null, "root", 1);
			createDatum("root", "A", 10);
				createDatum("A", "A.1", 100);
				createDatum("A", "A.2", 110);
				createDatum("A", "A.3", 120);
			createDatum("root", "B", 20);
				createDatum("B", "B.1", 200);
				createDatum("B", "B.2", 210);
			createDatum("root", "C", 30);
				createDatum("C", "C.1", 330);
				createDatum("C", "C.2", 370);
				createDatum("C", "C.3", 322);
				createDatum("C", "C.4", 310);
				createDatum("C", "C.5", 315);
		createDatum(null, "root2", 2);
			createDatum("root2", "X", 70);
				createDatum("X", "X.1", 700);
				createDatum("X", "X.2", 710);
				createDatum("X", "X.3", 720);
			createDatum("root2", "Y", 80);
				createDatum("Y", "Y.1", 800);
				createDatum("Y", "Y.2", 810);
			createDatum("root2", "Z", 90);
				createDatum("Z", "Z.1", 900);
				createDatum("Z", "Z.2", 910);
				createDatum("Z", "Z.3", 920);
				createDatum("Z", "Z.4", 930);
				createDatum("Z", "Z.5", 940);
	}
	
}