Using JLabel getLabelFor() for calling respective text input elements.selectAll() by mousePressed event on that JLabel

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Marek Mänd - 16 Dec 2003 20:38 GMT

public void mousePressed(MouseEvent e){
if (e.getSource() instanceof JLabel){
JLabel labelFor = ((JLabel)e.getSource());
if ( labelFor.getLabelFor() instanceof JTextField
||labelFor.getLabelFor() instanceof JTextArea
||labelFor.getLabelFor() instanceof JEditorPane
||labelFor.getLabelFor() instanceof JPasswordField
||labelFor.getLabelFor() instanceof JTextPane
)
{
(labelFor.getLabelFor()).requestFocus();
(( WHAT TO WRITE HERE? ) labelFor.getLabelFor() ).selectAll();
}
}
}

The problem is that I have Swing JLabel's and I want
to focus and select the contents of varios art text input
control contents when user "clicks" mouse on that JLabel.
The focusing code works fine
but the selectAll() part somehow seems to differ from focusing part
and probably needs downcast. WHY?

I am a java newbee and I have really no idea what to do do make
selecting of text elements work in the "generic" manner above tried.

The code above was the relevant part of
5 kilobyte sized 200 lines code file available at
http://hammer.prohosting.com/~cador/java/NiceJLabels.java

TIA =D

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VisionSet - 17 Dec 2003 11:00 GMT

> public void mousePressed(MouseEvent e){
> if (e.getSource() instanceof JLabel){
[quoted text clipped - 8 lines]
> (labelFor.getLabelFor()).requestFocus();
> (( WHAT TO WRITE HERE? ) labelFor.getLabelFor() ).selectAll();

WHAT TO WRITE HERE? = JTextComponent

but make sure only JTextComponents are registered with the listener, or have
another if(component instanceof JTextComponent)

Signature

Mike W

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Marek Mänd - 17 Dec 2003 14:17 GMT

> "Marek Mänd"
>>public void mousePressed(MouseEvent e){
[quoted text clipped - 12 lines]
> but make sure only JTextComponents are registered with the listener, or have
> another if(component instanceof JTextComponent)

Thank you for answering!
I have located the error and fixed it =D
I have sort of "generic" event listener for all elements.
I tried in my foolishness before posting here with JTextComponent, but
it didnt worked for me at that place. As a quite total Java newbee I
thought maybe the downcast didnt work with JTextComponent because of
JTextComponent is described with *abstract* keyword...
But the whole issue it didnt worked for me in first place was, that
I had to add at the beginning of file:

import javax.swing.text.JTextComponent;

which solved the problem. As a Java newbee I thought that
import javax.swing.*;
includes all "Swing stuff" but it seems not be the case.
Hope someone will onde day benefit from my explenation.

End of thread.

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Using JLabel getLabelFor() for calling respective text input elements.selectAll() by mousePressed event on that JLabel

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