Bug 172273 Grid insert to masterpage dosen't display propertily [05]
Build Number: 2.2.0.v20070131-1050 Description: As the screenshot, insert a grid (3*3) in the master page.It can't be display propertily. Step to reproduce: 1. new a report and switch to masterpage 2. insert a grid (3*3) Actual result: Please refer to the screenshot, it's abnormal.
model/org.eclipse.birt.report.model/src/org/eclipse/birt/report/model/core/DesignElement.java
* @throws PropertyValueException
	 *             if the structure list or the item to add has any semantic
	 *             error..
	 */
	public void checkSimpleList( Module module, PropertyDefn propDefn,
			List list, Object toAdd ) throws PropertyValueException
	{
		List errorList = SimpleListValidator.getInstance( ).validateForAdding(
				getHandle( module ), propDefn, list, toAdd );
		if ( errorList.size( ) > 0 )
		{
			throw (PropertyValueException) errorList.get( 0 );
		}
	}
	/**
	 * The common logic for both clone and cloneForTemplate.
	 * 
	 * @return the clone element with reference to parent in library
	 * @throws CloneNotSupportedException
	 */
	final private Object baseClone( ) throws CloneNotSupportedException
	{
		DesignElement element = (DesignElement) super.clone( );
		
		element.containerInfo = null;
		element.listeners = null;
		element.derived = null;
		element.cachedDefn = null;
		element.handle = null;
		element.propValues = new HashMap( );