861: Added flash detection code in vitals.

Add flash detection code in vitals, and have a flag in SESSION to indicate rather Flash is enabled on this browser or not.  This variable is useful for multifile uploader in File Manager.

diff --git a/docs/include/vitals.inc.php b/docs/include/vitals.inc.php
index b252699..f7a7dd7 100644 (file)
--- a/docs/include/vitals.inc.php
+++ b/docs/include/vitals.inc.php
@@ -265,6 +265,72 @@ if ($_course_id > 0)
 /*** 10. register pages based on user's priviledge ***/
 require_once(TR_INCLUDE_PATH.'page_constants.inc.php');
 
+/*~~~~~~~~~~~~~~~~~flash detection~~~~~~~~~~~~~~~~*/
+if(isset($_COOKIE["flash"])){
+    $_SESSION['flash'] = $_COOKIE["flash"];
+
+    //delete the cookie
+    ATutor.setcookie("flash",'',time()-3600);
+}
+
+if (!isset($_SESSION["flash"])) {
+       $_custom_head .= '
+               <script type="text/javascript">
+               <!--
+
+                       //VB-Script for InternetExplorer
+                       function iExploreCheck()
+                       {
+                               document.writeln("<scr" + "ipt language=\'VBscript\'>");
+                               //document.writeln("\'Test to see if VBScripting works");
+                               document.writeln("detectableWithVB = False");
+                               document.writeln("If ScriptEngineMajorVersion >= 2 then");
+                               document.writeln("   detectableWithVB = True");
+                               document.writeln("End If");
+                               //document.writeln("\'This will check for the plugin");
+                               document.writeln("Function detectActiveXControl(activeXControlName)");
+                               document.writeln("   on error resume next");
+                               document.writeln("   detectActiveXControl = False");
+                               document.writeln("   If detectableWithVB Then");
+                               document.writeln("      detectActiveXControl = IsObject(CreateObject(activeXControlName))");
+                               document.writeln("   End If");
+                               document.writeln("End Function");
+                               document.writeln("</scr" + "ipt>");
+                               return detectActiveXControl("ShockwaveFlash.ShockwaveFlash.1");
+                       }
+
+
+                       var plugin = (navigator.mimeTypes && navigator.mimeTypes["application/x-shockwave-flash"]) ? navigator.mimeTypes["application/x-shockwave-flash"].enabledPlugin : false;
+                       if(!(plugin) && (navigator.userAgent && navigator.userAgent.indexOf("MSIE")>=0 && (navigator.appVersion.indexOf("Win") != -1)))
+                               if (iExploreCheck())
+                                       flash_detect = "flash=yes";
+                               else
+                                       flash_detect = "flash=no";
+
+                       else if(plugin)
+                               flash_detect = "flash=yes";
+                       else
+                               flash_detect = "flash=no";
+
+                       writeCookie(flash_detect);
+
+                       function writeCookie(value)
+                       {
+                               var today = new Date();
+                               var the_date = new Date("December 31, 2099");
+                               var the_cookie_date = the_date.toGMTString();
+                               var the_cookie = value + ";expires=" + the_cookie_date;
+                               document.cookie = the_cookie;
+                       }
+               //-->
+               </script>
+';
+}
+
+
+
+/*~~~~~~~~~~~~~~end flash detection~~~~~~~~~~~~~~~*/
+
 /**
  * This function is used for printing variables for debugging.
  * @access  public