🚀 go-pugleaf

John ,
this downt work always crashes when at firePropertyChange
what al i doing wrong???

"John P. McGrath" wrote:

> On Fri, 19 May 2000 17:42:25 +0200, Sven Goetgeluck wrote:
>
> > Yes this is what i mean but don't kno to implement it in the
> > source, can you help?
>
> Here is one way you could do it:
>
>     public class PlusMinusTextField
>         extends JPanel
>     {
>         private JTextField textField;
>         private String text;
>         public static final String TEXT_PROPERTY = "text";
>             :
>             :
>         jbInit() {
>             :
>             textField = new JTextField();
>             lastText = "";
>             Document document = textField.getDocument();
>             document.addDocumentListener( new DocumentListener() {
>                 private void fireChange() {
>                     String oldText = text;
>                     text = textField.getText();
>                     firePropertyChange( TEXT_PROPERTY, oldText, text );
>                 }
>                 public void changedUpdate( DocumentEvent event ) {
>                     fireChange();
>                 }
>                 public void insertUpdate( DocumentEvent event ) {
>                     fireChange();
>                 }
>                 public void removeUpdate( DocumentEvent event ) {
>                     fireChange();
>                 }
>             } );
>         }
>     }
>
> Just one note:  If the "value" of your PlusMinusTextField is always
> supposed to be numeric, you will probably want to enforce that in the
> Document, and then rather than fire a "text" property, you could fire an
> "intValue" property instead.
>
> --
> John P. McGrath
> <JPMcGrath@fast.net>
> <jpm@nscs.fast.net>