link
/*
link.java
This is an applet that creates a drop down menu with links to sites that you specify in the param tags of you html file.
Created: 6/13/96
By: Darryl Stoflet
dstoflet@calweb.com
http://www.calweb.com/~dstoflet
Thanks Suresh Srinivasan (suresh@thomtech.com) for the color parameters.
*/
import java.util.*;
import java.net.*;
import java.awt.*;
import java.applet.Applet;
public class link extends Applet{
public int number;
public Vector urls = new Vector();
public Vector names = new Vector();
public URL theURL = null;
String at;
StringTokenizer st;
StringTokenizer str;
String targetFrame;
Color bgColor;
String s;
String rgbDelimiter = ":,.";
public void init() {
s = getParameter("bgColor");
if (s != null) st = new StringTokenizer(s, rgbDelimiter);
if (s == null)
bgColor = Color.lightGray;
else if (s.equalsIgnoreCase("red"))
bgColor = Color.red;
else if (s.equalsIgnoreCase("blue"))
bgColor = Color.blue;
else if (s.equalsIgnoreCase("green"))
bgColor = Color.green;
else if (s.equalsIgnoreCase("yellow"))
bgColor = Color.yellow;
else if (s.equalsIgnoreCase("white"))
bgColor = Color.white;
else if (s.equalsIgnoreCase("orange"))
bgColor = Color.orange;
else if (s.equalsIgnoreCase("cyan"))
bgColor = Color.cyan;
else if (s.equalsIgnoreCase("magenta"))
bgColor = Color.magenta;
else if (s.equalsIgnoreCase("black"))
bgColor = Color.black;
else if (st.countTokens() == 3) {
Integer r = new Integer(st.nextToken());
Integer g = new Integer(st.nextToken());
Integer b = new Integer(st.nextToken());
bgColor = new Color(r.intValue(), g.intValue(), b.intValue());
} else
bgColor = Color.lightGray;
String input_location = getParameter("target");
if(input_location != null) {
targetFrame = input_location;
}
else{
targetFrame = "_parent";
}
String input_number = getParameter("number");
number = Integer.parseInt(input_number);
Choice theLinks = new Choice();
for(int i = 0; i <= number; i++){
at = getParameter("link" + i);
str = new StringTokenizer(at, "\\");
names.addElement(new String(str.nextToken()));
urls.addElement(new String(str.nextToken()));
theLinks.addItem((String)names.elementAt(i));
}
add(theLinks);
setBackground(bgColor);
}
public boolean action(Event evt, Object arg){
if(evt.target instanceof Choice){
String site = (String)arg;
for(int n = 0; n <= number; n++){
if(site.equals((String)names.elementAt(n))){
try{theURL = new URL((String)urls.elementAt(n));}
catch(MalformedURLException e) {
System.out.println("Bad URL");}
getAppletContext().showDocument(theURL,targetFrame);
}
}
}
return true;
}
}
Back to the link applet page.
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