Bug 21013 [PropertiesView] ComboBoxPropertyDescriptor should provide a defualt label provider
ComboBoxPropertyDescriptor requires an array of string values in its contructor. These are used to display in the combo box cell editor. Typically clients must also supply a label provider with the same array of values in order to show the correct value when the cell editor is not active. The descriptor should create a default label provider based on the values passed in its constructor.
bundles/org.eclipse.ui.views/src/org/eclipse/ui/views/properties/PropertyDescriptor.java
* displayed in the status line.
 * <p>
 * Valid values for these flags are declared as constants on 
 *  <code>IPropertySheetEntry</code>
 * </p>
 * 
 * @param value the filter flags
 * @see #getFilterFlags
 */
public void setFilterFlags(String value[]) {
	filterFlags = value;
}
/**
 * Sets the help context id for this property descriptor.
 *
 * NOTE: Help support system API's changed since 2.0 and arrays
 * of contexts are no longer supported.
 * </p>
 * <p>
 * Thus the only valid parameter type for this method
 * is a <code>String</code> representing a context id. 
 * The previously valid parameter types are deprecated. 
 * The plural name for this method is unfortunate.
 * </p>
 * 
 * @param contextId the help context id, or <code>null</code> if none
 * @see #getHelpContextIds
 */
public void setHelpContextIds(Object contextIds) {
	helpIds = contextIds;