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Struts2 - Optiontransferselect Tag (Form Tags)

In this section, we are going to describe the Optiontransferselect tag. The Optiontransferselect tag is a UI tag that creates an option transfer select component. There are two <select ...> tags with buttons in the middle of them, which allows options in each of the <select ...> to be moved between them. It auto-selects all its elements upon its containing form submission.

NOTE: The id and doubleId parameters are not needed to supply as they will get generated when the optiontransferselect tag is being used in a form tag. The generated id and doubleId will be <form_id>_<optiontransferselect_doubleName> and <form_id>_<optiontransferselect_doubleName> respectively.

Add the following code snippet into the struts.xml file.

struts.xml
<action name="optiontransferselectTag">
  <result>/pages/uiTags/optiontransferselectTag.jsp</result>
</action>


Create a jsp using the tag <s:optiontransferselect> that creates an option transfer select component. This tag contains various parameters:

The label parameter sets label expression used for rendering an element specific label. In our case we have set it to "Employee Records"
The name parameter sets the name for the element.  In our case we have set it to "leftSideEmployeeRecords"
The leftTitle parameter sets the left title. In our case we have set it to "Struts2"
The rightTitle parameter sets the right title. In our case we have set it to "JavaJazzUp"
The headerKey sets the header key of the given list. It must not be empty. In our case we have set it to:"headerKey"
The headerValue sets the header value of the given list. In our case we have set it to:"--- Please Select ---"
The doubleName sets the name for complete component. In our case we have set it to:"rightSideEmployeeRecords"
The doubleHeaderKey sets the header key for the second list. In our case we have set it to:"doubleHeaderKey"
The doubleHeaderValue sets the  header value for the second list. In our case we have set it to:"--- Please Select ---"

optiontransferselectTag.jsp

<%@ taglib prefix="s" uri="/struts-tags" %>
<html>
  <head>
  <title>Optiontransferselect Tag Example!</title>
 <link href="<s:url value="/css/main.css"/>" rel="stylesheet"
  type="text/css"/>  
  </head>
  <body>
  <h1><span style="background-color: #FFFFcc">Optiontransferselect 
   Tag Example!</span></h>
  <s:form>
  <s:optiontransferselect 
  label="Employee Records"
  name="leftSideEmployeeRecords"
  leftTitle="Struts2"
  rightTitle="JavaJazzUp"
  list="{'Deepak Kumar', 'Sushil Kumar','Vinod Kumar','Deepak Monthy',
  'Deepak Mihanti', 'Sushil Kumar', 'Ravi Kant Kumar'}"
  headerKey="headerKey"
  headerValue="--- Please Select ---"
  doubleName="rightSideEmployeeRecords"
  doubleList="{'Amar Deep Patel', 'Amit Kumar','Chandan Kumar', 
   'Noor Kumar','Tammana Kumari'}"
  doubleHeaderKey="doubleHeaderKey"
  doubleHeaderValue="--- Please Select ---" />
  </s:form>
  </body>
</html>


Output of the optiontransferselectTag.jsp:

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