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
writer.write( "if( nullCtl ) nullCtl.name='';\n" ); 
			writer
					.write( "var localeCtl = document.getElementById(\"" + isLocaleId + "\");\n" ); 
			writer
					.write( "if( localeCtl ) localeCtl.name = \"" + ParameterAccessor.PARAM_ISLOCALE + "\";\n" ); 
			writer.write( "}\n" ); 
			writer.write( "function changeTextParam" + encParamId + "( )\n" ); 
			writer.write( "{\n" ); 
			writer
					.write( "var patternCtl = document.getElementById(\"" + patternId + "\");\n" ); 
			writer
					.write( "if( patternCtl ) patternCtl.name = \"" + patternName + "\";\n" ); 
			writer.write( "  handleTextParam" + encParamId + "( );\n" ); 		
			writer.write( "}\n" ); 
			writer.write( "</script>\n" ); 
		}
		
		writer.write( "\n<script language=\"JavaScript\">\n" ); 
		writer.write( "function handleParam" + encParamId + "( option )\n" ); 
		writer.write( "{\n" ); 
		writer.write( "if( !option ) return;\n" ); 
		writer.write( "var valCtl = document.getElementById(\"" + valueId 
				+ "\");\n" ); 
		writer.write( "var displayCtl = document.getElementById(\"" 
				+ displayTextId + "\");\n" ); 
		writer
				.write( "var nullCtl = document.getElementById(\"" + nullValueId + "\");\n" ); 
		writer.write( "var label = option.text;\n" ); 
		writer.write( "var value = option.value;\n" ); 
		writer.write( "if( label == \"" + IBirtConstants.NULL_VALUE + "\")\n" );