Re: [Springframework-rcp-dev] Position of caret for readonly fields

[Peter De B. <pet...@gm...>]

Do something  like this:

[code]
            textComponent.getDocument().addDocumentListener( new
DocumentListener() {
                public void removeUpdate( DocumentEvent e ) {
                    fixCaret();
                }

                public void insertUpdate( DocumentEvent e ) {
                    fixCaret();
                }

                public void changedUpdate( DocumentEvent e ) {
                    fixCaret();
                }

                private void fixCaret() {
                    if( !textComponent.hasFocus() ) {
                        // need to invoke later, as the text change also
changes the caret
                        // position
                        SwingUtilities.invokeLater( new Runnable() {
                            public void run() {
                                textComponent.setCaretPosition( 0 );
                            }
                        } );
                    }
                }

            } );
[/code]

On 9/7/07, Peter De Bruycker <pet...@gm...> wrote:
>
>
>
> On 9/7/07, Rogan Dawes <ro...@da...> wrote:
> >
> > Andy DePue wrote:
> > >   If this is a Swing "feature", then I'm not aware of a simple setting
> > > somewhere (maybe someone else knows of one?).  I do know that
> > > DefaultCaret has a setUpdatePolicy method.  You would have to get the
> > > Caret from the JTextField, make sure it is a DefaultCaret, cast it to
> > > DefaultCaret, and invoke setUpdatePolicy(DefaultCaret.NEVER_UPDATE).
> > > Even then, I haven't tested this, so I'm not sure if it would have the
> >
> > > desired effect.  Another approach would be to implement a
> > > FormComponentInterceptor that automatically handles any JTextField
> > that
> > > is not enabled so that the caret it always placed at the beginning of
> > > the field.  See SelectAllFormComponentInterceptorFactory for an
> > example
> > > of what an interceptor looks like.
> > >
> > >   - Andy
> >
> > How about calling
> >
> > http://java.sun.com/j2se/1.4.2/docs/api/javax/swing/text/JTextComponent.html#setCaretPosition(int)<http://java.sun.com/j2se/1.4.2/docs/api/javax/swing/text/JTextComponent.html#setCaretPosition%28int%29>
> >
> > with a value of 0 after setting the text?
>
>
>
> exactly,
>
> But what better place to do this than in a FormComponentInterceptor?
>
>
>
> Rogan
> >
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>