Bug 116377 container's data set should be list in dynamic image expression builder
description: container's data set should be list in dynamic image expression builder steps to reproduce: 1. drag an image to one cell of table 2. choose dynamic image 3. click on expression builder.... actual result: no data set list in the expression builder expected result: container's data set should be list in dynamic image expression builder
UI/org.eclipse.birt.report.designer.ui.lib/src/org/eclipse/birt/report/designer/internal/lib/views/outline/dnd/LibraryDropListener.java
{
		if (!validateSameParent(target, transfer))
		{
			return false;
		}
		
		boolean retValue = super.validateTarget( target, transfer );
		if ( !retValue )
		{
			retValue = isSupportPalletType( target, transfer )
					&& getCurrentLocation( ) == LOCATION_ON;
		}
		return retValue;
	}
	
	private boolean validateSameParent(Object targetObj, Object transferData)
	{
		if ( targetObj == null || transferData == null )
			return false;
		if (transferData instanceof String)
		{
			return true;
		}
		if (!(targetObj instanceof DesignElementHandle))
		{
			return false;
		}
		if ( transferData instanceof StructuredSelection )
		{
			return validateSameParent( targetObj,