Re: Use of Choice/combobox in an applet

From:
"Dag Sunde" <me@dagsunde.com>
Newsgroups:
comp.lang.java.programmer
Date:
Tue, 21 Nov 2006 14:15:10 +0100
Message-ID:
<4562fbde$0$16516$8404b019@news.wineasy.se>
Angus wrote:

"Dag Sunde" <me@dagsunde.com> wrote in message
news:4562df11$0$16498$8404b019@news.wineasy.se...

Angus wrote:

<snipped/>

Tip thou... I have posted about this Applet/JS topih here before...


Is that more to your liking?

If I use a html form control how can I access the contents of the HTML
control from my applet? I had a look at accessing JavaScript
functions from an
applet but that seems fraught with problems so something I want to
avoid.


Brilliant! ;-)

You need to add the plugin.jar to your classpath while developing
(Part of JRE, and not JDK)

Put the applet class files in the same directory as your html-file
on the server...

Here's the html:

<html>
 <head>
 <title>Untitled Document</title>
 <meta http-equiv="Content-Type" content="text/html; charset=iso-8859-1" />
  <script type="text/javascript">
   function getSelected() {
    return document.getElementById("names").value;
   }
  </script>

 </head>

 <body>
  <applet code=CallbackApplet.class width="300" height="50" >
  </applet>
  <select id="names">
   <option value="Andrew" selected="selected">Andrew</option>
   <option value="Angus">Angus</option>
   <option value="Dag">Dag</option>
  </select>
 </body>

</html>

And here's the Applet code:

import java.applet.Applet;
import netscape.javascript.*;
import java.awt.*;
import java.awt.Button;
import java.awt.event.ActionEvent;

public class CallbackApplet extends Applet {

 private Panel content = new Panel();
 private Button cmdGet = new Button();
 private Label lbl = new Label();

 public void init() {

  content.setBackground( Color.YELLOW);
  this.add(content);

  lbl.setText("Hello World!");
  content.add(lbl);

  cmdGet.setLabel("Get Combo Item");
  cmdGet.addActionListener(new java.awt.event.ActionListener() {
       public void actionPerformed(ActionEvent e) {
         getSelectedItem(e);
       }
     });
  content.add(cmdGet);

  this.invalidate();
 }

 private void getSelectedItem(ActionEvent e) {

  JSObject appletOwner = JSObject.getWindow ( this );
  lbl.setText(appletOwner.call ( "getSelected", null ).toString());
 }
}

--
Dag.

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