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java - Change behavior of JTable key actions

I have a JTable with editable cells. When I click in a cell, it enters edit mode; the same happens when I'm moving through cell using the directional arrows. Now I want to select the cell instead of start editing, and edit the cell only when the Enter key is pressed.

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Edit: Action for Enter key

class EnterAction extends AbstractAction {

    @Override
    public void actionPerformed(ActionEvent e) {
        JTable tbl = (JTable) e.getSource();
        tbl.editCellAt(tbl.getSelectedRow(), tbl.getSelectedColumn());
        if (tbl.getEditorComponent() != null) {
            tbl.getEditorComponent().requestFocus();
        }
    }
}

Now this is for left arrow action the rest of 3 are not hard to deduce from this one:

class LeftAction extends AbstractAction {
    @Override
    public void actionPerformed(ActionEvent e) {
        JTable tbl = (JTable)e.getSource();
        tbl.requestFocus();
        tbl.changeSelection(tbl.getSelectedRow(), tbl.getSelectedColumn() > 0 ? tbl.getSelectedColumn()-1:tbl.getSelectedColumn(), false, false);
        if(tbl.getCellEditor()!=null)
            tbl.getCellEditor().stopCellEditing();
    }
}

And this is how you bind this actions:

final String solve = "Solve";
            KeyStroke enter = KeyStroke.getKeyStroke(KeyEvent.VK_ENTER, 0);
            table.getInputMap(JTable.WHEN_ANCESTOR_OF_FOCUSED_COMPONENT).put(enter, solve);
            table.getActionMap().put(solve, new EnterAction());
final String sel = "Sel";
            KeyStroke arrow = KeyStroke.getKeyStroke(KeyEvent.VK_LEFT, 0);
            table.getInputMap(JTable.WHEN_ANCESTOR_OF_FOCUSED_COMPONENT).put(arrow, sel);
            table.getActionMap().put(sel, new LeftAction());

Oh,i almost forgot,to select the cell instead of edit on Mouse Click:

public static MouseListener mAdapterTable = new MouseListener()
{
    @Override
    public void mousePressed(MouseEvent e)
    {
        JTable tbl=((JTable)e.getComponent());
        if(tbl.isEditing())
        {
            tbl.getCellEditor().stopCellEditing();
        }
    }

    @Override
    public void mouseClicked(MouseEvent e) {
        JTable tbl=((JTable)e.getComponent());
        if(tbl.isEditing() )
            tbl.getCellEditor().stopCellEditing();
    }

    @Override
    public void mouseReleased(MouseEvent e) {
        JTable tbl=((JTable)e.getComponent());
        if(tbl.isEditing() )
            tbl.getCellEditor().stopCellEditing();
    }
};

The EventListner must be added to table like so:

table.addMouseListener(mAdapterTable);
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1 Answer

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Use Key Bindings for this. Most Look & Feel implementations already bind F2 to the table's startEditing action, but you add a different binding:

tree.getInputMap().put(KeyStroke.getKeyStroke(KeyEvent.VK_ENTER, 0), "startEditing");

This will effectively replace the previous binding of Enter to the table's selectNextRowCell action.


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