private class SwtTable.XXXFocusListenerCell
An instance of this is associated to any cell of the table.
The focus gained method is used to set the current cell of the table and to invoke redraw
to show the new selection. That focus event is invoked if the mouse button is pressed on that cell.
This method does nothing. A lost focus color showing may be forced from redraw of another
table. Think about: maybe any action?
Old: This routine is invoked whenever the focus of any Text field of the table will be lost
the focus. Before that occurs, the field is the selected line, because it has had the focus.
Therefore the GralTable#colorBackSelectNonFocused is set.
public void focusGained(FocusEvent ev)
This routine is invoked especially if the mouse is landing
on a Text-field with click. Then this table line and column
should be selected as currently.
This routine is invoked on setFocus()-call too. In this case
it should not done anything. The variable #bRedrawPending guards it.