JTable with a complex editor

Question

I have many custom editors for a JTable and it\'s an understatement to say that the usability, particularly in regard to editing with the keyboard, is lacking.

The main

Answer 1

I had very similar problem. In my case I had complex TableCellEditor which consists of JSpinner and some other components. The problem was that when cell editor started I wanted to transfer focus to its internal component. I fixed this by calling panel.transferFocusDownCycle() but this in turn caused keyboard events to stop working - when my internal component had focus and I pressed key up, I was expecting that component will intercept this event and change its value. Instead table changed row focus to one above... I fixed this by adding KeyListener and dispatching all key events directly to the internal component.

This is wrapper class based on JPanel I wrote to make my life easier.

public class ContainerPanel extends JPanel implements KeyListener, FocusListener {

    private JComponent component = null;

    public ContainerPanel(JComponent component) {
        this.component = component;
        addKeyListener(this);
        addFocusListener(this);
        setFocusCycleRoot(true);
        setFocusTraversalPolicy(new ContainerOrderFocusTraversalPolicy());
        add(component);
    }

    @Override
    public void keyTyped(KeyEvent e) {
        component.dispatchEvent(e);
    }

    @Override
    public void keyPressed(KeyEvent e) {
        component.dispatchEvent(e);
    }

    @Override
    public void keyReleased(KeyEvent e) {
        component.dispatchEvent(e);
    }

    @Override
    public void focusGained(FocusEvent e) {
        component.transferFocusDownCycle();
    }

    @Override
    public void focusLost(FocusEvent e) {
    }
}