SectionStackSection section = new SectionStackSection();
section.setCanCollapse(false);
section.setExpanded(true);
section.setResizeable(true);
TreeGrid tree = new TreeGrid();
tree.setWidth100();
tree.setHeight100();
tree.setAnimateFolderTime(100);
tree.setAnimateFolders(true);
tree.setAnimateFolderSpeed(1000);
tree.setShowSortArrow(SortArrow.CORNER);
tree.setShowAllRecords(true);
tree.setLoadDataOnDemand(false);
tree.setCanSort(false);
tree.setCellHeight(17);
tree.setShowHeader(false);
TreeGridField field = new TreeGridField();
field.setCanFilter(true);
field.setName("name");
field.setTitle("<b>SmartGWT Showcase</b>");
tree.setFields(field);
Tree treeData = new Tree();
treeData.setModelType(TreeModelType.PARENT);
treeData.setNameProperty("name");
treeData.setOpenProperty("isOpen");
treeData.setIdField("nodeID");
treeData.setParentIdField("parentNodeID");
treeData.setRootValue("root");
treeData.setData(DemoData.getMailTreeData());
tree.setData(treeData);
section.setControls(createToolbar());
section.setItems(tree);
setSections(section);
}