Source Code : ToolTip Tree Example

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ToolTip Tree Example

// Example from http://www.crionics.com/products/opensource/faq/swing_ex/SwingExamples.html

import java.awt.BorderLayout;
import java.awt.event.MouseEvent;
import java.awt.event.WindowAdapter;
import java.awt.event.WindowEvent;

import javax.swing.JFrame;
import javax.swing.JScrollPane;
import javax.swing.JTree;
import javax.swing.UIManager;
import javax.swing.tree.DefaultMutableTreeNode;
import javax.swing.tree.TreePath;

/**
 * @version 1.0 11/09/98
 */
class ToolTipTreeNode extends DefaultMutableTreeNode {
  private String toolTipText;

  public ToolTipTreeNode(String str, String toolTipText) {
    super(str);
    this.toolTipText = toolTipText;
  }

  public String getToolTipText() {
    return toolTipText;
  }
}

public class ToolTipTreeExample extends JFrame {
  public ToolTipTreeExample() {
    super("ToolTipTreeExample");
    String[][] strs = { { "swing", "boat" }, // 0
        { "platf", "paltform" }, // 1
        { "basic", "fortran" }, // 2
        { "metal", "heavy" }, // 3
        { "JTree", "three" } }; // 4

    ToolTipTreeNode[] nodes = new ToolTipTreeNode[strs.length];
    for (int i = 0; i < strs.length; i++) {
      nodes[i] = new ToolTipTreeNode(strs[i][0], strs[i][1]);
    }
    nodes[0].add(nodes[1]);
    nodes[1].add(nodes[2]);
    nodes[1].add(nodes[3]);
    nodes[0].add(nodes[4]);
    JTree tree = new JTree(nodes[0]) {
      public String getToolTipText(MouseEvent evt) {
        if (getRowForLocation(evt.getX(), evt.getY()) == -1)
          return null;
        TreePath curPath = getPathForLocation(evt.getX(), evt.getY());
        return ((ToolTipTreeNode) curPath.getLastPathComponent())
            .getToolTipText();
      }
    };
    tree.setToolTipText("");
    JScrollPane sp = new JScrollPane(tree);
    getContentPane().add(sp, BorderLayout.CENTER);
  }

  public static void main(String args[]) {
    try {
        UIManager.setLookAndFeel("com.sun.java.swing.plaf.windows.WindowsLookAndFeel");
    } catch (Exception evt) {}
  
    ToolTipTreeExample frame = new ToolTipTreeExample();
    frame.addWindowListener(new WindowAdapter() {
      public void windowClosing(WindowEvent e) {
        System.exit(0);
      }
    });
    frame.setSize(300, 150);
    frame.setVisible(true);
  }
}

           
       

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