// Implements AC_GenerateObj() function. This is a generic function used to generate

// object/embed/param tags. It is used by higher level api functions.



/************** LOCALIZABLE GLOBAL VARIABLES ****************/



var MSG_EvenArgs = 'The %s function requires an even number of arguments.'

                 + '\nArguments should be in the form "atttributeName","attributeValue",...';

var MSG_SrcRequired = "The %s function requires that a movie src be passed in as one of the arguments.";



/******************** END LOCALIZABLE **********************/



// Finds a parameter with the name paramName, and checks to see if it has the 

// passed extension. If it doesn't have it, this function adds the extension.

function AC_AddExtension(args, paramName, extension)

{

  var currArg, paramVal, queryStr, endStr;

  for (var i=0; i < args.length; i=i+2){

    currArg = args[i].toLowerCase();    

    if (currArg == paramName.toLowerCase() && args.length > i+1) {

      paramVal = args[i+1];

      queryStr = "";



      // Pull off the query string if it exists.

      var indQueryStr = args[i+1].indexOf('?');

      if (indQueryStr != -1){

        paramVal = args[i+1].substring(0, indQueryStr);

        queryStr = args[i+1].substr(indQueryStr);

      }



      endStr = "";

      if (paramVal.length > extension.length)

        endStr = paramVal.substr(paramVal.length - extension.length);

      if (endStr.toLowerCase() != extension.toLowerCase()) {

        // Extension doesn't exist, add it

        args[i+1] = paramVal + extension + queryStr;

      }

    }

  }

}



// Builds the codebase value to use. If the 'codebase' parameter is found in the args,

// uses its value as the version for the baseURL. If 'codebase' is not found in the args,

// uses the defaultVersion.

function AC_GetCodebase(baseURL, defaultVersion, args)

{

  var codebase = baseURL + defaultVersion;

  for (var i=0; i < args.length; i=i+2) {

    currArg = args[i].toLowerCase();    

    if (currArg == "codebase" && args.length > i+1) {

      if (args[i+1].indexOf("http://") == 0) {

        // User passed in a full codebase, so use it.

        codebase = args[i+1];

      }

      else {

        codebase = baseURL + args[i+1];

      }

    }

  }

	

  return codebase;	

}



// Substitutes values for %s in a string.

// Usage: AC_sprintf("The %s function requires %s arguments.","foo()","4");

function AC_sprintf(str){

  for (var i=1; i < arguments.length; i++){

    str = str.replace(/%s/,arguments[i]);

  }

  return str;

}

		

// Checks that args, the argument list to check, has an even number of 

// arguments. Alerts the user if an odd number of arguments is found.

function AC_checkArgs(args,callingFn){

  var retVal = true;

  // If number of arguments isn't even, show a warning and return false.

  if (parseFloat(args.length/2) != parseInt(args.length/2)){

    alert(sprintf(MSG_EvenArgs,callingFn));

    retVal = false;

  }

  return retVal;

}

	

function AC_GenerateObj(callingFn, useXHTML, classid, codebase, pluginsPage, mimeType, args){



  if (!AC_checkArgs(args,callingFn)){

    return;

  }



  // Initialize variables

  var tagStr = '';

  var currArg = '';

  var closer = (useXHTML) ? '/>' : '>';

  var srcFound = false;

  var embedStr = '<embed';

  var paramStr = '';

  var embedNameAttr = '';

  var objStr = '<object classid="' + classid + '" codebase="' + codebase + '"';



  // Spin through all the argument pairs, assigning attributes and values to the object,

  // param, and embed tags as appropriate.

  for (var i=0; i < args.length; i=i+2){

    currArg = args[i].toLowerCase();    



    if (currArg == "src"){

      if (callingFn.indexOf("RunSW") != -1){

        paramStr += '<param name="' + args[i] + '" value="' + args[i+1] + '"' + closer + '\n';

        embedStr += ' ' + args[i] + '="' + args[i+1] + '"';

        srcFound = true;

      }

      else if (!srcFound){

        paramStr += '<param name="movie" value="' + args[i+1] + '"' + closer + '\n'; 

        embedStr += ' ' + args[i] + '="' + args[i+1] + '"';

        srcFound = true;

      }

    }

    else if (currArg == "movie"){

      if (!srcFound){

        paramStr += '<param name="' + args[i] + '" value="' + args[i+1] + '"' + closer + '\n'; 

        embedStr += ' src="' + args[i+1] + '"';

        srcFound = true;

      }

    }

    else if (   currArg == "width" 

              || currArg == "height" 

              || currArg == "align" 

              || currArg == "vspace" 

              || currArg == "hspace" 

              || currArg == "class" 

              || currArg == "title" 

              || currArg == "accesskey" 

              || currArg == "tabindex"){

      objStr += ' ' + args[i] + '="' + args[i+1] + '"';

      embedStr += ' ' + args[i] + '="' + args[i+1] + '"';

    }

    else if (currArg == "id"){

      objStr += ' ' + args[i] + '="' + args[i+1] + '"';

      // Only add the name attribute to the embed tag if a name attribute 

      // isn't already there. This is what Dreamweaver does if the user

      // enters a name for a movie in the PI: it adds id to the object

      // tag, and name to the embed tag.

      if (embedNameAttr == "")

        embedNameAttr = ' name="' + args[i+1] + '"';

    }

    else if (currArg == "name"){

      objStr += ' ' + args[i] + '="' + args[i+1] + '"';

      // Replace the current embed tag name attribute with the one passed in.

      embedNameAttr = ' ' + args[i] + '="' + args[i+1] + '"';

    }    

    else if (currArg == "codebase"){

      // The codebase parameter has already been handled, so ignore it. 

    }    

    // This is an attribute we don't know about. Assume that we should add it to the 

    // param and embed strings.

    else{

      paramStr += '<param name="' + args[i] + '" value="' + args[i+1] + '"' + closer + '\n'; 

      embedStr += ' ' + args[i] + '="' + args[i+1] + '"';

    }

  }



  // Tell the user that a movie/src is required, if one was not passed in.

  if (!srcFound){

    alert(AC_sprintf(MSG_SrcRequired,callingFn));

    return;

  }



  if (embedNameAttr)

    embedStr += embedNameAttr;	

  if (pluginsPage)

    embedStr += ' pluginspage="' + pluginsPage + '"';

  if (mimeType)

    embedStr += ' type="' + mimeType + '"';

    

  // Close off the object and embed strings

  objStr += '>\n';

  embedStr += '></embed>\n'; 



  // Assemble the three tag strings into a single string.

  tagStr = objStr + paramStr + embedStr + "</object>\n"; 



  document.write(tagStr);

}