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Re: Swing - Using JTabbedPane

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On Sat, 16 Jan 2016 07:53:54 -0800, galt_57 wrote:

> So I'm throwing JTables into JScrollPanes and then adding them as new
> tabs, but when I want to read the selected table again later, I'm not
> sure what to do. Right now the code below seems to be working,
> but I'm not sure if it is a good approach. Also JViewport is a mystery.

It may be a good approach.
Here is another which may be good or not.

package scratch;

import java.util.HashMap;
import java.util.Map;

import javax.swing.JTabbedPane;

@SuppressWarnings("serial")
public class MyTabbedPane extends JTabbedPane {
  
  private Map<Integer, TabTypes> tabMap = new HashMap<>();
  
  public enum TabTypes {Empty, Table, Text, Unknown}
  
  public TabTypes getTabType(int index)
  throws IndexOutOfBoundsException {
    return tabMap.get(index);
  }

}

> int tab = jTabbedPane1.getSelectedIndex();
>         
> if (tab == -1){
>    statusMessageLabel.setText("Error: no tab is selected.");
>    return;
> }
>         
> Component csp = jTabbedPane1.getComponent(0);
> Component cvp;
> Component cjt;
>         
> JTable jt = null;
>         
> if (csp instanceof JScrollPane){
>    cvp = ((JScrollPane)csp).getComponent(0);
>    if (cvp instanceof JViewport){
>        cjt = ((JViewport)cvp).getComponent(0);
>        if (cjt instanceof JTable){
>            jt = (JTable)cjt;
>        }
>    }
> }
>         
> if (jt == null){
>     statusMessageLabel.setText("Error: selected tab "+ tab + " is not a
>     table.");
>     return;
> }

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Thread

Swing - Using JTabbedPane galt_57@hotmail.com - 2016-01-16 07:53 -0800
  Re: Swing - Using JTabbedPane Jeff Higgins <jeff@invalid.invalid> - 2016-01-16 19:29 +0000
    Re: Swing - Using JTabbedPane galt_57@hotmail.com - 2016-01-17 06:35 -0800
      Re: Swing - Using JTabbedPane Eric Sosman <esosman@comcast-dot-net.invalid> - 2016-01-17 10:08 -0500
      Re: Swing - Using JTabbedPane Knute Johnson <nospam@rabbitbrush.frazmtn.com> - 2016-01-17 09:49 -0800
        Re: Swing - Using JTabbedPane Martin Gregorie <martin@address-in-sig.invalid> - 2016-01-17 20:00 +0000
  Re: Swing - Using JTabbedPane Jeff Higgins <jeff@invalid.invalid> - 2016-01-17 14:21 +0000
  Re: Swing - Using JTabbedPane Eric Douglas <e.d.programmer@gmail.com> - 2016-01-18 06:39 -0800

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