🚀 go-pugleaf

You can implement your own javax.swing.ListCellRenderer for the JList and
implement the getListCellRendererComponent method to return a check box. The
check box comes with its own label (see setText() method); so you don't need
to handle that separately.

ListCellRender is an interface.  DefaultListCellRenderer is a concrete class
that extends JLabel.

HTH.

"Sam Seaborn" <sam@rightclick.ca> wrote in message
news:40980aed$1@newsgroups.borland.com...
> Hi,
>
> I'm trying to do a JList of JCheckboxes (like in JBX's 'close projects'
> dialog box).
>
> I have implemented a JTable with two columns, one for the checkbox and one
> for the label.  But it's not exactly what I want, and not as nice as
JBX's.
>
> Also, I tried dynamically GridBagLayout-ing JCheckBoxes on a JPanel to
> duplicate the behaviour, but that turned out even worse.
>
> How would you Swing gurus do it?
>
> Sam
>
>

After a good night's sleep I realize your question was addressed to swing
gurus.  You will surely excuse my impetuousness. :-)


"George" <geo_54321@yahoo.com> wrote in message
news:409810e5$1@newsgroups.borland.com...
> You can implement your own javax.swing.ListCellRenderer for the JList and
> implement the getListCellRendererComponent method to return a check box.
The
> check box comes with its own label (see setText() method); so you don't
need
> to handle that separately.
>
> ListCellRender is an interface.  DefaultListCellRenderer is a concrete
class
> that extends JLabel.
>
> HTH.
>
> "Sam Seaborn" <sam@rightclick.ca> wrote in message
> news:40980aed$1@newsgroups.borland.com...
> > Hi,
> >
> > I'm trying to do a JList of JCheckboxes (like in JBX's 'close projects'
> > dialog box).
> >
> > I have implemented a JTable with two columns, one for the checkbox and
one
> > for the label.  But it's not exactly what I want, and not as nice as
> JBX's.
> >
> > Also, I tried dynamically GridBagLayout-ing JCheckBoxes on a JPanel to
> > duplicate the behaviour, but that turned out even worse.
> >
> > How would you Swing gurus do it?
> >
> > Sam
> >
> >
>
>

> > You can implement your own javax.swing.ListCellRenderer for the JList
and
> > implement the getListCellRendererComponent method to return a check box.

> After a good night's sleep I realize your question was addressed to swing
> gurus.  You will surely excuse my impetuousness. :-)

Anyone's opinions are useful, guru or no. ;-)

I thought about implementing ListCellRenderer, but wouldn't I have to do a
corresponding "ListCellEditor" so I can interact with the checkboxes?

Sam

FYI,

I found an interesting solution here: http://www.devx.com/tips/Tip/5342

Thanks,

Sam


"Sam Seaborn" <sam@rightclick.ca> wrote in message
news:40980aed$1@newsgroups.borland.com...
> Hi,
>
> I'm trying to do a JList of JCheckboxes (like in JBX's 'close projects'
> dialog box).
>
> I have implemented a JTable with two columns, one for the checkbox and one
> for the label.  But it's not exactly what I want, and not as nice as
JBX's.
>
> Also, I tried dynamically GridBagLayout-ing JCheckBoxes on a JPanel to
> duplicate the behaviour, but that turned out even worse.
>
> How would you Swing gurus do it?
>
> Sam
>
>

hi,

- you create a new renderere
- rather than adding string to the list, you add objects that have at least
two properties, the string you want to display and the value of the
checkbox - checked or not
- depending on the checked property value, you display the appropriate icon
that will show the item checked or not - you can take these icons from the
swing icon repository, it will surely look like a genuine Swing checkbox

how you interact with it: that is the problem:
- you create your own JList class
- make it implement MouseListener
- in mouseDown (attention, not mouseClick, that works bad in this situation)
get the item under the mouse cursor, see if you are on the icon (a little
math) and if so, toggle the checked value in the object in the selected item
and afterwards call repaint on the object.

Done so several times, works like a charm.

The stuff with adding multiple controls with GridBag and getting their
value: tried it either, worked for me, but it is not as elegant as the one
mentioned above.

Regards,
Daniel
"Sam Seaborn" <sam@rightclick.ca> wrote in message
news:40992bef$1@newsgroups.borland.com...
> > > You can implement your own javax.swing.ListCellRenderer for the JList
> and
> > > implement the getListCellRendererComponent method to return a check
box.
>
> > After a good night's sleep I realize your question was addressed to
swing
> > gurus.  You will surely excuse my impetuousness. :-)
>
> Anyone's opinions are useful, guru or no. ;-)
>
> I thought about implementing ListCellRenderer, but wouldn't I have to do a
> corresponding "ListCellEditor" so I can interact with the checkboxes?
>
> Sam
>
>