tree.setSize("100%", "100%");
tree.setExcludedOpen(true);
tree.addSelectionHandler(new SelectionHandler<TreeItem>() {
@Override
public void onSelection(SelectionEvent<TreeItem> event) {
ExplorerTreeItem item = (ExplorerTreeItem) event.getSelectedItem();
refreshPrimaryList(item.getLabel(), item.getValue(), !item.isSelected());
}
});
scroll.add(tree);
rightPanel.add(scroll);
primary = new ListBox();