/**
* Return if the given unit is a relative unit or not. The following units defined in <code>
* DesignChoiceConstants</code> are considered as relative:
*
* <ul>
* <li>UNITS_EM
* <li>UNITS_EX
* <li>UNITS_PERCENTAGE
* <li>UNITS_PX
* </ul>
*
* @param unit a given unit.
* @return <code>true</code> if the unit is a relative unit like em, ex, % and px. Return <code>
* false</code> if the unit is not a relative unit.( it can be an absolute relative unit like
* "mm", or even an unrecognized unit. )
*/
public static final boolean isRelativeUnit(String unit) {
return DesignChoiceConstants.UNITS_EM.equalsIgnoreCase(unit)
|| DesignChoiceConstants.UNITS_EX.equalsIgnoreCase(unit)
|| DesignChoiceConstants.UNITS_PERCENTAGE.equalsIgnoreCase(unit)
|| DesignChoiceConstants.UNITS_PX.equalsIgnoreCase(unit);
}
