Widget Gallery

  void Tree() {
    WTree tree = new WTree();
    tree.setSelectionMode(SelectionMode.Extended);
    WIconPair folderIcon =
        new WIconPair("icons/yellow-folder-closed.png", "icons/yellow-folder-open.png", false);
    WTreeNode node = new WTreeNode("Furniture", folderIcon);
    tree.setTreeRoot(node);
    tree.getTreeRoot().getLabel().setTextFormat(TextFormat.Plain);
    tree.getTreeRoot().setLoadPolicy(ContentLoading.NextLevel);
    tree.getTreeRoot().addChildNode(new WTreeNode("Table"));
    tree.getTreeRoot().addChildNode(new WTreeNode("Cupboard"));
    WTreeNode subtree = new WTreeNode("Chair");
    WTreeNode subtree_ = tree.getTreeRoot().addChildNode(subtree);
    tree.getTreeRoot().addChildNode(new WTreeNode("Coach"));
    tree.getTreeRoot().expand();
    subtree_.addChildNode(new WTreeNode("Doc"));
    subtree_.addChildNode(new WTreeNode("Grumpy"));
    subtree_.addChildNode(new WTreeNode("Happy"));
    subtree_.addChildNode(new WTreeNode("Sneezy"));
    subtree_.addChildNode(new WTreeNode("Dopey"));
    subtree_.addChildNode(new WTreeNode("Bashful"));
    subtree_.addChildNode(new WTreeNode("Sleepy"));
  }