关于带有复选框的树的问题(100分)

Question

没找到源码，只能跟你说原理，自己实现起来也不难
定制树节点的渲染器，这种效果的树节点并不是真正的在前面带了复选框，而只是一个象复选框的图标在那里，自己写个树节点鼠标点击事件改变图标
至于点父节点全选之类都是需要自己写代码来改变图标

Answer 1

public class MyTreeCellRenderer implements TreeCellRenderer{
        public Component getTreeCellRendererComponent( JTree tree, Object value, boolean selected, boolean expanded,
                                                       boolean leaf, int row, boolean hasFocus )
        {
            DefaultMutableTreeNode treeNode = (DefaultMutableTreeNode)value;
            MyTreeCell treeCell = (MyTreeCell)treeNode.getUserObject();
            return treeCell.getRendererComponent();
        }
    }
每个树节点绑定的对象就是MyTreeCell
public class MyTreeCell {
    private static final ImageIcon ALL_SELECTED_ICON =
        new ImageIcon(MyTreeCell.class.getResource("allselected.gif"));
    private static final ImageIcon ALL_NOT_SELECTED_ICON = new ImageIcon(MyTreeCell.class.getResource(
        "allnotselected.gif"));
    private static final ImageIcon PARTIAL_SELECTED_ICON = new ImageIcon(MyTreeCell.class.getResource(
        "partialselected.gif"));    private String labelText = null;
    private JLabel label = null;    public MyTreeCell(String labelText, boolean selected) {
        this.labelText = (labelText == null ? "" : labelText);
        ImageIcon icon = ALL_SELECTED_ICON;
        if (selected == false) {
            icon = ALL_NOT_SELECTED_ICON;
        }
        label = new JLabel(labelText, icon, JLabel.HORIZONTAL);
    }    //改变到全选状态图标
    public void changeToAllSelected() {
        label.setIcon(ALL_SELECTED_ICON);
    }    //改变到全不选状态图标
    public void changeToAllNotSelected() {
        label.setIcon(ALL_NOT_SELECTED_ICON);
    }    //改变到半选状态图标
    public void changeToPartialSelected() {
        label.setIcon(PARTIAL_SELECTED_ICON);
    }    public JComponent getRendererComponent() {
        return label;
    }    public String getLabelText() {
        return labelText;
    } }