help, having trouble with en/dis-abling button

[fuyumi87]

Hi, I am currently making a list, where users can click the Add-button to add stuffs to the list, and click the Delete-button to delete the selected item.

However, because it starts with an Empty list, I want the Delete-button to disable at first. (see the third line with "<<< check").. then it will enable as long as there is one item in the list. but if the user deletes all the items, it will go back to disable form.

But somehow, it is not enabling even I put the deletestateButton.setEnabled(true);

can someone help?

//create the deletestate button
deletestateButton = new JButton("Delete State");
deletestateButton.setEnabled(false); // <<<<<<<<<<<< check
 
deletestateButton.addActionListener(new ActionListener(){
    public void actionPerformed(ActionEvent e) {
        int index = statelist.getSelectedIndex();
        int size = listModel.getSize();
        listModel.remove(index);
        if (size == 0) {
            deletestateButton.setEnabled(false);
        } else {
            deletestateButton.setEnabled(true); <<<<< HERE
            if (index == size) {
                //removed item in last position
                index--;
            }
            statelist.setSelectedIndex(index);
            statelist.ensureIndexIsVisible(index);
        }
        //face.setAwake(false);
    }//end listener
});

[sukatoa]

If i were you, i just set the button's visibility state into false...
or Set the button's focusable state... It looks like disabled...

So nobody can click it, focus on it, or etc....

[BigDaddyLH]

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