Call a user action from a plugin

Hello
Is it possible to call an action made by a user, if yes how I can retrieve it (by its name ?) and is it possible to set some arguments of the action ?
Thanks

here it is a sample of how PlayActionEvent method could be used:
ASErr
AIArtHandleModifier::Rasterize()
          AIErr result = kNoErr;
          AIActionParamValueRef valueParameterBlock = NULL;
          ActionDialogStatus dialogStatus = kDialogOff;
try
                    result = sAIActionManager->AINewActionParamValue(&valueParameterBlock);
                    aisdk::check_ai_error(result);
                    if (valueParameterBlock)
                              //set valueParameterBlock values (params) before calling
                              //PlayActionEvent method.
                              //It's up to you to set it
                              result = sAIActionManager->PlayActionEvent("ai_plugin_rasterize", dialogStatus, valueParameterBlock);
                              aisdk::check_ai_error(result);
                              result = sAIActionManager->AIDeleteActionParamValue(valueParameterBlock);
                              aisdk::check_ai_error(result);
          catch(ai::Error& ex)
           //Do something with this!!!
return result;
Regards,
Thomas.

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>
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http://www.it-eye.nl/weblog/2005/12/13/ajax-in-struts-implementing-dependend-select-boxes/
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However, i've mentioned a sample code snippet for you reference.
XML Response Pattern :
======================
<? xml version="1.1" ?>
<dropdown>
<option>
<val>CUSTOMIZED_VALUE</val>
<text>CUSTOMIZED_VALUE</text>
</option>
</dropdown>Sample.jsp:
===========
<%@page language="java" %>
<html>
    <head>
        <meta http-equiv="Content-Type" content="text/html; charset=UTF-8">
        <title>Automatic Drop-Down Updation</title>
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      var xmlhttp
      // Timer Variables
      var c = 0
      var t
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        function refreshCombo(txt){
            xmlhttp = null
            // code for initializing XmlHttpRequest Object On Browsers like Mozilla, etc.
            if (window.XMLHttpRequest){
                 xmlhttp = new XMLHttpRequest()
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              drRemove()
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              var val
              var tex
              var optn
              for(var i = 0;i < x.length; i++){
                 optn = document.createElement("OPTION")
                 var er
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try{
// Assigning the value to a Drop-Down Set Element
optn.value = val[0].firstChild.data
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// Checking for the tag which holds the Text of the Drop-Down combo element
tex = x[i].getElementsByTagName("text")
try{
// Assigning the Text to a Drop-Down Set Element
optn.text = tex[0].firstChild.data
} catch(er){
// Adding the Set Element to the Drop-Down
document.SampleForm.SampleCombo.options.add(optn)
/* Function removes all the elements in the Drop-Down */
function drRemove(){
var x = document.SampleForm.SampleCombo
for(var i = document.SampleForm.SampleCombo.length - 1 ; i >= 0 ; i--){
x.remove(i)
</script>
</head>
<body onload="syncCount()">
<pre> <h1>Refresh Drop-Down <div id='txt'> </div> </h1></pre>
<form name="SampleForm">

<select name="x" onchange="refreshCombo(this.value)">
               <option value="1">United States</option>
               <option value="2">United Kingdom</option>
               <option value="3">United Arab Emriates</option>
</select>

<select name="SampleCombo">
<option value="-1">Pick One</option>
</select>
</form>
</body>
</html>
struts-config.xml:
==================
<action-mappings>
<action path="/dropdown" type="com.controlleraction.AjaxActionClass">
<forward name="error" path="/error.jsp"/>
</action>
</action-mappings>AjaxActionClass.java:
=====================
package com.controlleraction;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import javax.servlet.http.HttpSession;
import org.apache.struts.action.ActionErrors;
import org.apache.struts.action.ActionForm;
import org.apache.struts.action.ActionForward;
import org.apache.struts.action.ActionMapping;
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public ActionForward execute( ActionMapping mapping,ActionForm form,HttpServletRequest request,HttpServletResponse response) throws Exception {
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    try{
       req = request.getParameter("count");
    } catch(Exception exp){
   if(!req.equals("")){
       response.setContentType("text/xml");
       response.setHeader("Pragma","no-cache");
       response.setHeader("Cache-Control","no-cache,post-check=0,pre-check=0");
       PrintWriter out = response.getWriter();
       /*a sample bean where we trying to call a service from Model*/
       com.Biz.XmlBean xml = new XmlBean();
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       return(null);
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     return new ActionForward("error");
}XmlBean.java:
=============
* XmlBean.java
import java.sql.*;
import java.util.*;
import java.io.*;
* @author RaHuL
public class XmlBean {
    private Connection con = null;
    private PreparedStatement pstmt = null;
    private ResultSet rs = null;
    // Setting CLASSURL path to TYPE I Driver
    private String CLASSURL = "sun.jdbc.odbc.JdbcOdbcDriver";
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    /** Creates a new instance of XmlBean and also establishes DB Connections */
    public XmlBean() {
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            Class.forName(CLASSURL);
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        String XmlBuffer = new String("");
        if(IS_ESTABLISHED == true){
            try{
                pstmt = con.prepareStatement("SELECT stateid,statename FROM STATE_TABLE where countryid = ?");
                pstmt.setString(1,req);
                rs = pstmt.executeQuery();
                if(rs != null){
                    XmlBuffer = XmlBuffer + "<?xml version=\"1.0\" encoding=\"ISO-8859-1\" ?>";
                    XmlBuffer = XmlBuffer + "";
                    // Root Node
                    XmlBuffer = XmlBuffer + "<dropdown>";
                    while(rs.next()){
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            }catch(SQLException sqe){
                sqe.printStackTrace();
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                exp.printStackTrace();
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    /* Closes the DB Connection Conmpletely */
    public boolean close(){
        if(IS_ESTABLISHED == true){
            try{
                pstmt.close();
                con.close();
                return(true);
            } catch(SQLException sqe){
                sqe.printStackTrace();
            } catch(Exception exp){
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NOTE: I understand i'm not completely coded things as per proper coding standards.please execuse me for that as this example was just given to enable user to learn how XmlHttpRquest,reponseXML
can be used for better purposes instead of devising manual parsing.
where i've used XmlHttpResponse pattern to be in XML. you may make use of other practices like JSON & so on depending on your requirement..
and and if you are more instrested in integrating Struts with AJAX using few frameworks & customized tag based support please go though the below link.
http://struts.sourceforge.net/ajaxtags/index.html
Hope that might help :)
REGARDS,
RaHuL

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