ToolTip List Example : List « Swing Components « Java

1. Java
2. Swing Components
3. List

ToolTip List Example

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

//File:ToolTipListExample.java
/* (swing1.1.1) */


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.JList;
import javax.swing.JScrollPane;
import javax.swing.UIManager;

/**
 * @version 1.0 08/26/99
 */
public class ToolTipListExample extends JFrame {

  public ToolTipListExample() {
    super("ToolTip Example");

    String[][] strs = { { "Acinonyx jutatus", "Cheetah" },
        { "Panthera leo", "Lion" }, { "Canis lupus", "Wolf" },
        { "Lycaon pictus", "Llycaon" }, { "Vulpes Vulpes", "Fox" } };

    JList list = new JList(createItems(strs)) {
      public String getToolTipText(MouseEvent e) {
        int index = locationToIndex(e.getPoint());
        if (-1 < index) {
          ToolTipItem item = (ToolTipItem) getModel().getElementAt(
              index);
          return item.getToolTipText();
        } else {
          //return super.getToolTipText();
          return null;
        }
      }
    };
    list.setToolTipText("");

    getContentPane().add(new JScrollPane(list), BorderLayout.CENTER);
  }

  Object[] createItems(String[][] strs) {
    ToolTipItem[] items = new ToolTipItem[strs.length];
    for (int i = 0; i < strs.length; i++) {
      items[i] = new ToolTipItem(strs[i][0], strs[i][1]);
    }
    return items;
  }

  class ToolTipItem {
    String obj;

    String toolTipText;

    public ToolTipItem(String obj, String text) {
      this.obj = obj;
      this.toolTipText = text;
    }

    public String getToolTipText() {
      return toolTipText;
    }

    public String toString() {
      return obj;
    }
  }

  public static void main(String args[]) {
    try {
        UIManager.setLookAndFeel("com.sun.java.swing.plaf.windows.WindowsLookAndFeel");
    } catch (Exception evt) {}
  
    ToolTipListExample frame = new ToolTipListExample();
    frame.addWindowListener(new WindowAdapter() {
      public void windowClosing(WindowEvent e) {
        System.exit(0);
      }
    });
    frame.setSize(140, 150);
    frame.setVisible(true);
  }
}

           
         
  

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