package com.marinilli.b2.c11.util;
import javax.swing.JLabel;
import java.awt.event.*;
import java.util.*;
import java.awt.Cursor;
import java.net.URL;
import javax.swing.event.*;
/**
* Chapter 11 - A Label that launches a browser
* @author Mauro Marinilli
* @version 1.0
*/
public class JNLPLabel extends JLabel implements MouseListener {
private String text = "";
private URL url= null;
private static final String COLOR_BEFORE_CLICKING = "blue";
private static final String COLOR_AFTER_CLICKING = "purple";
private boolean alreadyClicked = false;
private transient Vector hListeners;
public JNLPLabel() {
addMouseListener(this);
}
public void mouseClicked(MouseEvent e) {
alreadyClicked=true;
java.awt.Toolkit.getDefaultToolkit().beep();
fireHyperlinkUpdate(new HyperlinkEvent(this, HyperlinkEvent.EventType.ACTIVATED,url));
Utilities.getBasicService().showDocument(url);
}
public void mousePressed(MouseEvent e) {
}
public void mouseReleased(MouseEvent e) {
}
public void mouseDragged(MouseEvent e) {
}
public void mouseMoved(MouseEvent e) {
}
public void mouseEntered(MouseEvent e) {
if (!alreadyClicked)
super.setText(""+text+"");
else
super.setText(""+text+"");
setCursor(Cursor.getPredefinedCursor(Cursor.HAND_CURSOR));
}
public void mouseExited(MouseEvent e) {
setText(""+text+"");
}
public void setText(String txt) {
text=txt;
super.setText(""+text+"");
}
public void setURL(URL u) {
url=u;
setToolTipText("view in browser "+url);
}
public void setURL(String u) {
try {
setURL(new URL(u));
} catch (Exception exc) {
System.out.println(getClass()+"setURL: "+ exc);
}
}
public synchronized void removeHyperlinkListener(HyperlinkListener l) {
if (hListeners != null && hListeners.contains(l)) {
Vector v = (Vector) hListeners.clone();
v.removeElement(l);
hListeners = v;
}
}
public synchronized void addHyperlinkListener(HyperlinkListener l) {
Vector v;
if (hListeners == null)
v = new Vector(2);
else v = (Vector) hListeners.clone();
if (!v.contains(l)) {
v.addElement(l);
hListeners = v;
}
}
protected void fireHyperlinkUpdate(HyperlinkEvent e) {
if (hListeners != null) {
Vector listeners = hListeners;
int count = listeners.size();
for (int i = 0; i < count; i++) {
((HyperlinkListener) listeners.elementAt(i)).hyperlinkUpdate(e);
}
}
}
}