redefining JList behavior

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2 total messages Started by Tony Sat, 16 Jul 2005 04:31

#477

Author: Tony
Date: Sat, 16 Jul 2005 04:31

10 lines
1215 bytes

Hi,

I have a small problem and I would appreciate any ideas.
I would like to redefine the JList behavior to allow multiple
selection/unselection without having to hold down the "Ctrl"-key.
So, I would like to have the same behavior JList currently has
while holding down the "Ctrl"-key without having to hold it down.

Thanks a lot in advance!
Tony.

Re: redefining JList behavior

#480

Author: Tony
Date: Sun, 17 Jul 2005 21:32

46 lines
2370 bytes

> I would like to redefine the JList behavior to allow multiple
> selection/unselection without having to hold down the "Ctrl"-key.
> So, I would like to have the same behavior JList currently has
> while holding down the "Ctrl"-key without having to hold it down.

Just in case if anyone is interested

    class ToggleSelectionModel extends DefaultListSelectionModel
    {
        boolean gestureStarted = false;

        public void setSelectionInterval(int index0, int index1)
        {
            if (super.getSelectionMode() != 
ListSelectionModel.SINGLE_SELECTION &&
                index0 == index1)
            {
                if (!gestureStarted)
                {
                    if (isSelectedIndex(index0))
                    {
                        super.removeSelectionInterval(index0, index1);
                    }
                    else
                    {
                        super.addSelectionInterval(index0, index1);
                    }
                    gestureStarted = true;
                }
            }
            else
            {
                super.setSelectionInterval(index0, index1);
            }
        }

        public void setValueIsAdjusting(boolean isAdjusting)
        {
            if (isAdjusting == false)
            {
                gestureStarted = false;
            }

        }

    }

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