Bug 118750 Insert group for table from library, system throws exception.
Insert group for table from library, system throws exception. Steps: 1.Insert a tabel from library 2.Insert group Actual Results: 1.System throws exception A Birt exception occurred. Plug-in Provider:Eclipse.org Plug-in Name:BIRT Model Plug-in ID:org.eclipse.birt.report.model Version:1.0.1 Error Code:Error.ContentException.STRUCTURE_CHANGE_FORBIDDEN Error Message:Element "report.Body[1]" is child element or a virtual element( inside the child ), can not change its structure. Expected Results: 1.Can be inserted group
UI/org.eclipse.birt.report.designer.ui/src/org/eclipse/birt/report/designer/internal/ui/editors/schematic/actions/InsertGroupActionFactory.java
return null;
			}
		}
		
		if ( part instanceof GridEditPart )
			return null;
		return part;
	}
	/**
	 * Gets list edit part.
	 * 
	 * @return The current selected list edit part, null if no list edit part is
	 *         selected.
	 */
	protected ListEditPart getListEditPart( )
	{
		if ( getSelection( ) == null || getSelection( ).isEmpty( ) )
			return null;
		List list = getSelection( );
		int size = list.size( );
		ListEditPart part = null;
		for ( int i = 0; i < size; i++ )
		{
			Object obj = getSelection( ).get( i );
			if ( i == 0 && obj instanceof ReportElementEditPart )
			{
				currentModel = ( (ReportElementEditPart) obj ).getModel( );
			}
			ListEditPart currentEditPart = null;
			if ( obj instanceof ListEditPart )