Bug 201236 Issue about Allow multiple and duplicate values in Layout preview[0705]
Description: Issue about Allow multiple and duplicate values in Layout preview Build number:2.2.1.v20070827 Steps to reproduce: 1. New sample data source and dataset from CUSTOMERS. 2. New a parameter p1, listbox, dynamic, value field COUNTRY, tick on allow duplicate value, tick on allow multiple values. 3. Insert a data item to Layout, set expression as var values=""; for (i=0;i<params["p1"].value.length;i++) values=values+params["p1"].value[i]+"."; values; 4. In Layout, click Preview and select France. Expected result: Display one France. Actual result: Display several France. I tried the same action but preview in Web viewer and extenal html, the result is only one France. Error log:n/a
viewer/org.eclipse.birt.report.viewer/birt/WEB-INF/classes/org/eclipse/birt/report/taglib/ParamDefTag.java
if ( pageContext.findAttribute( this.groupObjName ) == null )
			{
				writer
						.write( "<script  language=\"JavaScript\">var " + this.groupObjName + " = new ParameterGroup( );</script>\n" ); 
				pageContext.setAttribute( this.groupObjName, Boolean.TRUE );
			}
			
			Collection selectionList = getParameterSelectionListForCascadingGroup( );
			__handleCommonListBox( selectionList );
			__handleCascadingListBox( );
		}
		else
		{
			
			Collection selectionList = BirtReportServiceFactory
					.getReportService( ).getParameterSelectionList(
							viewer.getReportDesignHandle( ), options,
							param.getName( ) );
			if ( this.paramDef.isMultiValue( ) )
				__handleMultiListBox( selectionList );
			else
				__handleCommonListBox( selectionList );
		}
	}
	/**
	 * Create Progress bar div
	 * 
	 * @param baseURL
	 * @throws Exception
	 */