TreeList.java 文件源码

public TreeList(TreeListModel model) {
    super(model);
    setSelectionMode(ListSelectionModel.MULTIPLE_INTERVAL_SELECTION);
    setFixedCellHeight(ROW_HEIGHT + INSETS_TOP + INSETS_BOTTOM + 2);
    setCellRenderer(renderer);
    setBackground(ColorManager.getDefault().getDefaultBackground());
    ToolTipManager.sharedInstance().registerComponent(this);
    addMouseListener(new MouseAdapter() {
        @Override
        public void mouseClicked(MouseEvent e) {
            if (e.getClickCount() != 2 || e.isPopupTrigger() || e.isConsumed()) {
                return;
            }
            int index = locationToIndex(e.getPoint());
            if (index < 0 || index >= getModel().getSize()) {
                return;
            }
            Object value = getModel().getElementAt(index);
            if (value instanceof TreeListNode) {
                TreeListNode node = (TreeListNode) value;

                if (null != node && !node.isExpandable()) {
                    ActionListener al = node.getDefaultAction();
                    if (null != al) {
                        al.actionPerformed(new ActionEvent(e.getSource(), e.getID(), e.paramString()));
                    }
                } else if (null != node && node.isExpandable()) {
                    if (!node.isLoaded()) {
                        return;
                    }
                    node.setExpanded(!node.isExpanded());
                }
            }
        }
    });
}