/*



File: AC_QuickTime.js



Abstract: This file contains functions to generate OBJECT and EMBED tags for QuickTime content.



<script type="text/javascript" src="AC_QuickTime.js"></script>

<script language="JavaScript" type="text/javascript">

  QT_WriteOBJECT_XHTML('Room1.mov', '400', '315', '',

    'autoplay', 'true',

    'emb#bgcolor', 'black',

    'align', 'middle'); 

</script>



http://developer.apple.com/internet/ieembedprep.html



*/ 



/*

 * This file contains functions to generate OBJECT and EMBED tags for QuickTime content. 

 */



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



var gArgCountErr =	'The "%%" function requires an even number of arguments.'

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



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



var gTagAttrs				= null;

var gQTGeneratorVersion		= 1.0;



function AC_QuickTimeVersion()	{ return gQTGeneratorVersion; }



function _QTComplain(callingFcnName, errMsg)

{

    errMsg = errMsg.replace("%%", callingFcnName);

	alert(errMsg);

}



function _QTAddAttribute(prefix, slotName, tagName)

{

	var		value;



	value = gTagAttrs[prefix + slotName];

	if ( null == value )

		value = gTagAttrs[slotName];



	if ( null != value )

	{

		if ( 0 == slotName.indexOf(prefix) && (null == tagName) )

			tagName = slotName.substring(prefix.length); 

		if ( null == tagName ) 

			tagName = slotName;

		return tagName + '="' + value + '" ';

	}

	else

		return "";

}



function _QTAddObjectAttr(slotName, tagName)

{

	// don't bother if it is only for the embed tag

	if ( 0 == slotName.indexOf("emb#") )

		return "";



	if ( 0 == slotName.indexOf("obj#") && (null == tagName) )

		tagName = slotName.substring(4); 



	return _QTAddAttribute("obj#", slotName, tagName);

}



function _QTAddEmbedAttr(slotName, tagName)

{

	// don't bother if it is only for the object tag

	if ( 0 == slotName.indexOf("obj#") )

		return "";



	if ( 0 == slotName.indexOf("emb#") && (null == tagName) )

		tagName = slotName.substring(4); 



	return _QTAddAttribute("emb#", slotName, tagName);

}





function _QTAddObjectParam(slotName, generateXHTML)

{

	var		paramValue;

	var		paramStr = "";

	var		endTagChar = (generateXHTML) ? ' />' : '>';



	if ( -1 == slotName.indexOf("emb#") )

	{

		// look for the OBJECT-only param first. if there is none, look for a generic one

		paramValue = gTagAttrs["obj#" + slotName];

		if ( null == paramValue )

			paramValue = gTagAttrs[slotName];



		if ( 0 == slotName.indexOf("obj#") )

			slotName = slotName.substring(4); 

	

		if ( null != paramValue )

			paramStr = '  <param name="' + slotName + '" value="' + paramValue + '"' + endTagChar + '\n';

	}



	return paramStr;

}



function _QTDeleteTagAttrs()

{

	for ( var ndx = 0; ndx < arguments.length; ndx++ )

	{

		var attrName = arguments[ndx];

		delete gTagAttrs[attrName];

		delete gTagAttrs["emb#" + attrName];

		delete gTagAttrs["obj#" + attrName];

	}

}



		



// generate an embed and object tag, return as a string

function _QTGenerate(callingFcnName, generateXHTML, args)

{

	// is the number of optional arguments even?

	if ( args.length < 4 || (0 != (args.length % 2)) )

	{

		_QTComplain(callingFcnName, gArgCountErr);

		return "";

	}

	

	// allocate an array, fill in the required attributes with fixed place params and defaults

	gTagAttrs = new Array();

	gTagAttrs["src"] = args[0];

	gTagAttrs["width"] = args[1];

	gTagAttrs["height"] = args[2];

	gTagAttrs["classid"] = "clsid:02BF25D5-8C17-4B23-BC80-D3488ABDDC6B";

		//Impportant note: It is recommended that you use this exact classid in order to ensure a seamless experience for all viewers

	gTagAttrs["pluginspage"] = "http://www.apple.com/quicktime/download/";



	// set up codebase attribute with specified or default version before parsing args so

	//  anything passed in will override

	var activexVers = args[3]

	if ( (null == activexVers) || ("" == activexVers) )

		activexVers = "6,0,2,0";

	gTagAttrs["codebase"] = "http://www.apple.com/qtactivex/qtplugin.cab#version=" + activexVers;



	var	attrName,

		attrValue;



	// add all of the optional attributes to the array

	for ( var ndx = 4; ndx < args.length; ndx += 2)

	{

		attrName = args[ndx].toLowerCase();

		attrValue = args[ndx + 1];



		// "name" and "id" should have the same value, the former goes in the embed and the later goes in

		//  the object. use one array slot 

		if ( "name" == attrName || "id" == attrName )

			gTagAttrs["name"] = attrValue;



		else 

			gTagAttrs[attrName] = attrValue;

	}



	// init both tags with the required and "special" attributes

	var objTag =  '<object '

					+ _QTAddObjectAttr("classid")

					+ _QTAddObjectAttr("width")

					+ _QTAddObjectAttr("height")

					+ _QTAddObjectAttr("codebase")

					+ _QTAddObjectAttr("name", "id")

					+ _QTAddObjectAttr("tabindex")

					+ _QTAddObjectAttr("hspace")

					+ _QTAddObjectAttr("vspace")

					+ _QTAddObjectAttr("border")

					+ _QTAddObjectAttr("align")

					+ _QTAddObjectAttr("class")

					+ _QTAddObjectAttr("title")

					+ _QTAddObjectAttr("accesskey")

					+ _QTAddObjectAttr("noexternaldata")

					+ '>\n'

					+ _QTAddObjectParam("src", generateXHTML);

	var embedTag = '  <embed '

					+ _QTAddEmbedAttr("src")

					+ _QTAddEmbedAttr("width")

					+ _QTAddEmbedAttr("height")

					+ _QTAddEmbedAttr("pluginspage")

					+ _QTAddEmbedAttr("name")

					+ _QTAddEmbedAttr("align")

					+ _QTAddEmbedAttr("tabindex");



	// delete the attributes/params we have already added

	_QTDeleteTagAttrs("src","width","height","pluginspage","classid","codebase","name","tabindex",

					"hspace","vspace","border","align","noexternaldata","class","title","accesskey");



	// and finally, add all of the remaining attributes to the embed and object

	for ( var attrName in gTagAttrs )

	{

		attrValue = gTagAttrs[attrName];

		if ( null != attrValue )

		{

			embedTag += _QTAddEmbedAttr(attrName);

			objTag += _QTAddObjectParam(attrName, generateXHTML);

		}

	} 



	// end both tags, we're done

	return objTag + embedTag + '> </em' + 'bed>\n</ob' + 'ject' + '>';

}



// return the object/embed as a string

function QT_GenerateOBJECTText()

{

	return _QTGenerate("QT_GenerateOBJECTText", false, arguments);

}



function QT_GenerateOBJECTText_XHTML()

{

	return _QTGenerate("QT_GenerateOBJECTText_XHTML", true, arguments);

}



function QT_WriteOBJECT()

{

	document.writeln(_QTGenerate("QT_WriteOBJECT", false, arguments));

}



function QT_WriteOBJECT_XHTML()

{

	document.writeln(_QTGenerate("QT_WriteOBJECT_XHTML", true, arguments));

}