protected void fireChange(boolean force) {

        String value = getFormValueAsString();
        if (force || !value.equals(m_previousValue)) {
            m_previousValue = value;
            ValueChangeEvent.fire(this, value);
        }
    }
protected void fireChange ( boolean force ) { String value = getFormValueAsString ( ) ; if ( force || ! value . equals ( m_previousValue ) ) { m_previousValue = value ; ValueChangeEvent . fire ( this , value ) ; } }
Fires the value change event if the value has changed.<p>

@param force <code>true</code> to force firing the event in any case