重写jtree TreeCellRenderer的疑问

Question

请看类：
import javax.swing.*;
import javax.swing.tree.*;
import java.awt.*;
import java.awt.event.MouseAdapter;
import java.awt.event.MouseEvent;
public class CheckTreeCellRenderer extends JPanel implements TreeCellRenderer{
    private CheckTreeSelectionModel selectionModel;
    private TreeCellRenderer delegate;
    public TristateCheckBox checkBox = new TristateCheckBox();    public CheckTreeCellRenderer(TreeCellRenderer delegate, CheckTreeSelectionModel selectionModel){
        this.delegate = delegate;
        this.selectionModel = selectionModel;
        setLayout(new BorderLayout());
        setOpaque(false);
        checkBox.setOpaque(false);
    }
    public Component getTreeCellRendererComponent(JTree tree, Object value, boolean selected, boolean expanded, boolean leaf, int row, boolean hasFocus){
        Component renderer = delegate.getTreeCellRendererComponent(tree, value, selected, expanded, leaf, row, hasFocus);
        TreePath path = tree.getPathForRow(row);
        if(path!=null){
            if(selectionModel.isPathSelected(path, true))
                checkBox.setState(TristateCheckBox.SELECTED);            else
                checkBox.setState(selectionModel.isPartiallySelected(path) ? null : TristateCheckBox.NOT_SELECTED);
        }
        removeAll();
        renderer.addMouseListener(new MouseAdapter() {
          public void mouseExited(MouseEvent e) {
            System.out.println("dddddddddddddddddd");
            setForeground(Color.black);
          }
          public void mouseEntered(MouseEvent e) {
            setForeground(Color.red);
          }
          public void mouseClicked(MouseEvent me){          }
        });
        add(checkBox, BorderLayout.WEST);
        add(renderer, BorderLayout.CENTER);
        return this;
    }
}
这是一个checktree,面板WEST加载checkBox,CENTER加载renderer
如果直接写renderer.setForeground(Color.red);则树节点字的颜色全部会变成红色，
这里我写renderer鼠标事件，想要达到当鼠标进入renderer时树节点字颜色变成红色，移出鼠标时变成黑色，为什么这个事件不执行？
或是有什么别的方法，可以让鼠标进入与离开树节点时该节点颜色发生变化？

Answer 1

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Answer 2

楼上的，你还真挺长脸的啊，真好意思啊看看这是举报他的帖子，还挂着呢
http://topic.csdn.net/u/20080124/08/b14ab841-be1e-4d0d-b16e-52f77fd3a764.html?seed=1573367784

Answer 3

import java.awt.BorderLayout;
import java.awt.Color;
import java.awt.Component;
import java.awt.Rectangle;
import java.awt.event.MouseEvent;
import java.awt.event.MouseMotionListener;import javax.swing.JFrame;
import javax.swing.JScrollPane;
import javax.swing.JTree;
import javax.swing.tree.DefaultTreeCellRenderer;
import javax.swing.tree.TreePath;
public class T
{
public static void main(String[] args)
{
JTree tree = new JTree();
tree.setCellRenderer(new TestTreeCellRenderer());

JFrame f = new JFrame();
f.getContentPane().add(new JScrollPane(tree), BorderLayout.CENTER);
f.pack();
f.setLocationRelativeTo(null);
f.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
f.setVisible(true);
}
}class TestTreeCellRenderer extends DefaultTreeCellRenderer implements MouseMotionListener
{
private TreePath currentTreePath;
private boolean listenerAdded = false; @Override
public Component getTreeCellRendererComponent(JTree tree, Object value, 
boolean sel, boolean expanded, boolean leaf,
int row, boolean hasFocus)
{
if (!listenerAdded && tree != null) {
tree.addMouseMotionListener(this);
listenerAdded = true;
}

super.getTreeCellRendererComponent(tree, value, sel, expanded, leaf, row, hasFocus);
if (currentTreePath != null && currentTreePath.getLastPathComponent() == value) {
setForeground(Color.RED);
} return this;
} public void mouseDragged(MouseEvent e)
{
} public void mouseMoved(MouseEvent e)
{
JTree tree = (JTree) e.getSource();
TreePath path = tree.getPathForLocation(e.getX(), e.getY());

TreePath oldPath = currentTreePath;

if (path == null) {
currentTreePath = null;
}
else {
currentTreePath = path;
}

if (oldPath != null) {
Rectangle pathBounds = tree.getPathBounds(oldPath);
if (pathBounds != null) {
tree.repaint(pathBounds);
}
}
if (currentTreePath != null) {
Rectangle pathBounds = tree.getPathBounds(currentTreePath);
if (pathBounds != null) {
tree.repaint(pathBounds);
}
}
}
}

Answer 4

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Answer 5

对renderer里的东西写事件监听是不起作用的吧，我也做过像鼠标移动到表格或树的某个单元格（结点）触发事件的东西，不过都是针对table或者tree加监听，然后判断鼠标位置是否为我想处理的地方。