[SWING] TableHeader with multiple JComponents

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Markus Mehlan - 15 Aug 2003 08:05 GMT

Hi,

i put a JPanel with a JButton and a JTextField in a the Header of a JTable.

Code-snippet:
----------------------
Enumeration enumeration = tableView.getColumnModel().getColumns();

while (enumeration.hasMoreElements()) {

TableColumn aColumn = (TableColumn)enumeration.nextElement();

aColumn.setHeaderRenderer(new TableHeaderFilter() );

}

In my TableHeaderFilter class i've overwritten the method
getTableCellRendererComponent.

The problem is that the JTextField and the JButton don't respond on
mouse-actions.

Has anyone an idee?

Thanks for your help,

Markus

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Jacob - 15 Aug 2003 09:02 GMT

> Hi,
>
[quoted text clipped - 17 lines]
> The problem is that the JTextField and the JButton don't respond on
> mouse-actions.

The components you put in the header is just
there for rendering purposes. They have no
behaviour whatsoever.

It is a bit confusing. I've tried to decorate
table headers with sorting buttons and similar
features without any luck, until a realised
the fact. I've found no satisfying workaround.

Reply to this Message

Thomas Weidenfeller - 15 Aug 2003 10:18 GMT

> The components you put in the header is just
> there for rendering purposes. They have no
[quoted text clipped - 4 lines]
> features without any luck, until a realised
> the fact. I've found no satisfying workaround.

http://www2.gol.com/users/tame/swing/examples/JTableExamples5.html

has some examples. They are rather old, and I have no idea if they
still work.

/Thomas

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Carsten Zerbst - 15 Aug 2003 10:26 GMT

> The problem is that the JTextField and the JButton don't respond on
> mouse-actions.
>
> Has anyone an idee?

The table header is getting the mouse events, not the individual
components.

It works like this:

========================

table.getTableHeader( ).addMouseListener( new TGHeaderListener( ) );

public class TGHeaderListener extends MouseAdapter {
public void mouseClicked( MouseEvent ev ) {
if ( ev.getClickCount( ) != 2 ) {
return;
}

// sort this column ...

}

public void mousePressed( MouseEvent ev ) {
maybeShowPopup( ev ); // Unix
}

public void mouseReleased( MouseEvent ev ) {
maybeShowPopup( ev );
}

protected void maybeShowPopup( MouseEvent ev ) {

//log.debug("maybeShowPopup " + ev );
int col = table.columnAtPoint( ev.getPoint( ) );
log.debug( "col " + col );

if ( ev.isPopupTrigger( ) && ( col != -1 ) ) {
// create a popup menu on the column header
JPopupMenu menu = new JPopupMenu( );

menu.show( ev.getComponent( ), ev.getX( ), ev.getY( ) );
}
}
}

==================

Bye, Carsten

Signature

Dipl. Ing. Carsten Zerbst | carsten.zerbst@atlantec-es.com

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Markus Mehlan - 15 Aug 2003 22:14 GMT

> > The problem is that the JTextField and the JButton don't respond on
> > mouse-actions.
[quoted text clipped - 46 lines]
>
> Bye, Carsten

Hi, Carsten,

The table header really catches the events. But how can i dispatch them to
the different components in the JPanel?
The JButton should work like a normal Button not like a label.
When i click in The JTextField it should be possible to enter text,
etc.

thx Markus

Reply to this Message

Carsten Zerbst - 23 Aug 2003 21:39 GMT

> Hi, Carsten,
>
[quoted text clipped - 3 lines]
> When i click in The JTextField it should be possible to enter text,
> etc.

Hello Markus,

I'm afraid that you have to dispatch the events by yourself to the
desired widgets ...

I have implemented a kind of super table for our applications which
supports filtering and sorting. Filtering for a single column is done by
double clicking on the header, there is an extra field for single column
filtering as done in many email clients like evolution or kmail etc.
Sorting my multiple columns has an own toplevel started by a popup menu,
filtering using many criterias has an extra toplevel.

Bye, Carsten

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Markus Mehlan - 27 Aug 2003 12:54 GMT

> Hello Markus,
>
[quoted text clipped - 9 lines]
>
> Bye, Carsten

Hello Carsten,

now i have a solution for my problem. It looks like this:
http://www.mmdev.it-pc.de/table1.jpg

I had to create my own TableHeader, a renderer and an editor for the
header cells, a renderer for the left Column and so on. It's a lot of work.
If you hav ean easier way to do this, tell it me.

Perhaps you can send me a screenshot of your "super table".

thx, Markus

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[SWING] TableHeader with multiple JComponents

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