public int getKeyboardSelectedColumn() {
        return KeyboardSelectionPolicy.DISABLED == getKeyboardSelectionPolicy()
                ? -1
                : keyboardSelectedColumn;
    }
Get the index of the column that is currently selected via the keyboard.

@return the currently selected column, or -1 if none selected
stroom-core-client-widget/src/main/java/com/google/gwt/user/cellview/client/AbstractCellTable.java