Bug 120317 Set "dimension" property to 3D in "properties" view, error appears in layout editor.
Description: Set "dimension" property to 3D in "properties" view, error appears in layout editor. Steps to reproduce: 1. Add a 2D chart in property editor. 2. Set its dimension property to "three-dimension" in properties view. 3. Error appears in chart.
model/org.eclipse.birt.report.model/src/org/eclipse/birt/report/model/api/PropertyHandle.java
}
	/**
	 * returns the element reference value list if the property is element
	 * referenceable type.
	 * 
	 * @return list of the reference element value.
	 */
	public List getReferenceableElementList( )
	{
		if ( propDefn.getTypeCode( ) != PropertyType.ELEMENT_REF_TYPE )
			return Collections.EMPTY_LIST;
		List list = new ArrayList( );
		ElementDefn elementDefn = (ElementDefn) propDefn.getTargetElementType( );
		assert elementDefn != null;
		ModuleHandle moduleHandle = ( (ModuleHandle) getModule( ).getHandle(
				getModule( ) ) );
		if ( ReportDesignConstants.DATA_SET_ELEMENT.equals( elementDefn
				.getName( ) ) )
			return moduleHandle.getDataSets( ).getContents( );
		else if ( ReportDesignConstants.DATA_SOURCE_ELEMENT.equals( elementDefn
				.getName( ) ) )
			return moduleHandle.getDataSources( ).getContents( );
		else if ( ReportDesignConstants.STYLE_ELEMENT.equals( elementDefn
				.getName( ) )
				&& moduleHandle instanceof ReportDesignHandle )
			return ( (ReportDesignHandle) moduleHandle ).getStyles( )
					.getContents( );
		return list;
	}
	/*