Bug 189393 Can not drop the item into cross table row
Description: Can not drop the item into cross table row Step: 1. New a cross table. 2. Drop any item from palette into cross table row. Actual result: The item cannot drop in it.
UI/org.eclipse.birt.report.designer.ui/src/org/eclipse/birt/report/designer/internal/ui/editors/schematic/tools/ReportCreationTool.java
if ( template.startsWith( IReportElementConstants.REPORT_ELEMENT_EXTENDED ) )
			{
				type = ReportDesignConstants.EXTENDED_ITEM;
			}
		}
		return type;
	}
	/**
	 * Validates specified creation type can be inserted to layout editor.
	 * 
	 * @param objectType
	 *            specified creation type
	 * @param targetEditPart
	 * @return validate result
	 */
	public static boolean handleValidatePalette( Object objectType,
			EditPart targetEditPart )
	{
		return objectType instanceof String
				&& targetEditPart != null
				&& DNDUtil.handleValidateTargetCanContainType( targetEditPart.getModel( ),
						ReportCreationTool.getCreationType( (String) objectType ) )
				&& DNDUtil.handleValidateTargetCanContainMore( targetEditPart.getModel( ),
						1 );
	}
	/*
	 * (non-Javadoc)
	 * 
	 * @see org.eclipse.gef.tools.CreationTool#handleMove()
	 */