Author: Real Gagnon
Author's WebSite: http://tactika.com/realhome/realhome.html
The netscape.javascript.* (LiveConnect) package provides facilities to directly manipulate HTML FORM components.
JSObject win = (JSObject)JSObject.getWindow(this);
JSObject HTMLInputText = (JSObject) win.eval("document.forms[0].elements[0]");
String testValue = (String)HTMLInputText.getMember("value"); // read form value
HTMLInputText.setMember("value" , testValue + "new stuff"); // write form value
But this action requires a signed applet. in Netscape, you must
PrivilegeManager.enablePrivilege("UniversalBrowserRead");
PrivilegeManager.enablePrivilege("UniversalBrowserWrite");
before using an JSObject related to an HTML document.
But there is a workaround, simply pass the informations through Javascript functions!
[JSjava.java]
import java.applet.*;
import java.awt.event.*;
import java.awt.*;
import netscape.javascript.*;
public class JSjava extends Applet
implements ActionListener {
Button b1,b2;
TextField tf;
JSObject win;
public void init(){
setLayout(new FlowLayout());
tf = new TextField(10);
b1 = new Button("to FORM");
b2 = new Button("from FORM");
b1.addActionListener(this);
b2.addActionListener(this);
add(tf);add(b1);add(b2);
}
public void actionPerformed(ActionEvent ae) {
if (ae.getSource() == b1) {
// send TO FORM
JSObject win = (JSObject)JSObject.getWindow(this);
win.eval("setHTMLInputText('"+tf.getText()+"');");
}
if (ae.getSource() == b2) {
// receive FROM FORM
JSObject win = (JSObject)JSObject.getWindow(this);
tf.setText((String)win.eval("getHTMLInputText();"));
}
}
}
[JSjava.html]
<HTML><HEAD><SCRIPT>
function getHTMLInputText(){
return document.forms[0].elements[0].value;
}
function setHTMLInputText(s){
document.forms[0].elements[0].value = s;
}
</SCRIPT></HEAD><BODY>
<FORM>
<INPUT TYPE=text SZIE=20>
</FORM>
<APPLET NAME="JS" CODE=JSjava.class MAYSCRIPT WIDTH=200 HEIGTH=200>
</APPLET>
</BODY></HMTL>
Posted On: 7-Jul-1999
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