Determine users browser (firefox, ie, etc) and assign to variable

[bsgcic]

I need the equivalent of accessing navigator.appName (i.e., what browser the user is using) in javascript but within a conversation scoped stateful Seam component.

I have tried ways including the following statements:

private Parameters userParameters = (Parameters) Parameters.instance();
     
@In(create=true, value="org.jboss.seam.web.parameters")
private org.jboss.seam.web.Parameters webParameters;

this.userRequestParameters = this.redirectPageInformation.getParameters();
this.userRequestParameters = this.userParameters.getRequestParameters();
this.userRequestParameters = this.webParameters.getRequestParameters();

But have not been able to get this to successfully work yet.

I would greatly appreciate it if someone would post example code for this.

Thank you,

Jeff

[damianharvey.damianharvey.gmail.com]

You may find this useful:

String userAgent = FacesContext.getCurrentInstance().getExternalContext().getRequestHeaderMap().get("user-agent");

Cheers,

D.

[bsgcic]

Damian,

Thank you very kindly!!

Jeff

[bsgcic]

I finally got this working and thus I thought I would post the code. This solution is based on Damian's comment above and on the work by Faisal Khan in his posting at link.

//$Id: DetectBrowser.java 2010-03-30 12:52:00 $

package com.mysite.util;

import java.io.Serializable;

import javax.faces.context.FacesContext;
import javax.servlet.http.HttpServletRequest;

import org.jboss.seam.ScopeType;
import org.jboss.seam.annotations.Create;
import org.jboss.seam.annotations.Name;
import org.jboss.seam.annotations.Scope;
import org.jboss.seam.annotations.Startup;
import org.jboss.seam.annotations.web.RequestParameter;

@Name("detectBrowser")
@Scope(ScopeType.SESSION)
@Startup
public class DetectBrowser implements Serializable //Definition Begin
{

     /**
      * 
      */
     private static final long serialVersionUID = -108298423454361891327L;
     
     public DetectBrowser() {};
     
     
     private HttpServletRequest request = null;
     
     //Note 20100330: I believe that I can also use the @RequestParameter annotation as well.
     //@RequestParameter("userAgent")
     //private String userAgent = null;
     //private String userAgent;
     private String userAgent = FacesContext.getCurrentInstance().getExternalContext().getRequestHeaderMap().get("user-agent");
     
     private boolean isNetEnabled = false;
     
     private boolean isIE = false;
     
     private boolean isFirefox = false;
     
     private boolean isNS6 = false;
     
     private boolean isNS4 = false;
     
     private String cssPostfix = null;
     
     private final String cssPostfix_IE = "";
     
     private final String cssPostfix_Firefox = "_FF";
     
     
     @Create
     public void create()
     {
          this.setUserAgentAttributes();
          
     } //public void create()
     
     
     public void setRequest(HttpServletRequest request)
     {
          this.request = request;
          
          String userAgent = this.request.getHeader("User-Agent");
          
          this.setUserAgent(userAgent);
          
     } //public void setRequest(HttpServletRequest req)
     
     
     public void setUserAgent(String userAgent)
     {
          this.userAgent = userAgent;
          
     } //public void setUserAgent(String userAgent)
     
     
     public void setUserAgentAttributes()
     {
          String userAgentCheck = this.userAgent.toLowerCase();
          
          if (userAgentCheck.indexOf("msie") != -1)
          {
               this.isIE = true;
               
               this.cssPostfix = this.cssPostfix_IE;
               
          } //if (userAgentCheck.indexOf("msie") != -1)
          
          else if(userAgentCheck.indexOf("firefox") != -1)
          {
               this.isFirefox = true;
               
               this.cssPostfix = this.cssPostfix_Firefox;
               
          } //else if(userAgentCheck.indexOf("netscape6") != -1)
          
          else if(userAgentCheck.indexOf("netscape6") != -1)
          {
               this.isNS6 = true;
               
               this.cssPostfix = this.cssPostfix_Firefox;
               
          } //else if(userAgentCheck.indexOf("netscape6") != -1)
          
          else if(userAgentCheck.indexOf("mozilla") != -1)
          {
               this.isNS4 = true;
               
               this.cssPostfix = this.cssPostfix_Firefox;
               
          } //else if(userAgentCheck.indexOf("mozilla") != -1)
          
          else //Not (if (userAgentCheck.indexOf("msie") != -1))
          {
               this.cssPostfix = this.cssPostfix_Firefox;
               
          } //else //Not (if (userAgentCheck.indexOf("msie") != -1))
          
          
          if(userAgentCheck.indexOf(".net clr") != -1)
               this.isNetEnabled = true;
          
     } //public void setUserAgentAttributes()
     
     
     public String getUseragent()
     {
          return userAgent;
     }
     
     public boolean isNetEnabled()
     {
          return isNetEnabled;
     }
     
     public boolean isIE()
     {
          return isIE;
     }
     
     public boolean isFirefox()
     {
          return isFirefox;
     }
     
     public boolean isNS6()
     {
          return isNS6;
     }
     
     public boolean isNS4()
     {
          return isNS4;
     }

     public String getCssPostfix()
     {
          return cssPostfix;
     }
     
     public void setCssPostfix(String cssPostfix)
     {
          this.cssPostfix = cssPostfix;
     }     
     
} //public class DetectBrowser implements Serializable //Definition Begin

And then in the xhtml code:

<div class="beginningOfClassName#{detectBrowser.cssPostfix}">

Jeff