Bug 134949 Themes nest in other library
Details: Themes nest in other library Step: 1. Library A use LibraryB, and Library B has a themes 2. Report design use Library A 3. I open the Library tree of A in library explorer and drop the themes from B into layout. Actual result: It pop up an error message and said that the library namespace "B" exists already. Exception result: I don't konw if I can use by this method. But I think it is a method user may be used.
UI/org.eclipse.birt.report.designer.ui/src/org/eclipse/birt/report/designer/ui/views/attributes/providers/ChoiceSetFactory.java
* 
	 * @param elemenName
	 *            The design element name.
	 * @param property
	 *            The property name.
	 * @return The given property 's display names
	 */
	public static String[] getPropertyDisplayNames( String elementName,
			String property )
	{
		IChoiceSet choiceSet = getElementChoiceSet( elementName, property );
		return getDisplayNamefromChoiceSet( choiceSet );
	}
	/**
	 * Gets property 's display name given element name, property name and the
	 * property's value.
	 * 
	 * @param elemenName
	 *            The design element name.
	 * @param property
	 *            The property name.
	 * @param valule
	 *            The property 's value.
	 * @return The given property 's display name
	 */
	public static String getPropDisplayName( String elementName,
			String property, String value )
	{
		IChoiceSet set = getElementChoiceSet( elementName, property );
		return getDisplayNameFromChoiceSet( value, set );