/*
 * Name:
 *	content_rater.js
 *
 * Description:
 *	Defines functions for making AJAX queries via the HTTP protocol's GET method.
 *
 * Pre-conditions:
 *	'q'			   : Content Rating
 *	'contentId'    : contentId
 *  'contentTypeId : contentTypeId
 *
 * Post-conditions:
 * - Calls the upd_content_rater.php which updates/inserts
 *   content rating and displays RatingAvg
 * - Updates the hit counts, miss counts, and calculated ratings of all instances of a piece of content onscreen.
 *
 * Log:
 *	Kripa Shenai		09/20/2007
 *		- Creation
 *
 */


var xmlHttp
/*
* Name:
*	rate_content
*
* Description:
*	make query string for ajax request and Calls the upd_content_rater.php which updates/inserts
*   content rating and displays RatingAvg
*
*
* Pre-conditions:
*   rating 			- required
*   contentTypeId 	- required
*	contentId		- required
*   displayVar		- required
*	stylePrefix		- required
*	fromBox			- required
* Post-conditions:
*  
* Log:
*  Dipak A.Basantani   09/20/2007
*/

function rate_content(rating,contentTypeId,contentId,displayVar,stylePrefix,fromBox) {
	
	//
	// make it global
	//
	displayId = displayVar;
	style = stylePrefix;
	
	if (rating.length==0)
	{
		document.getElementById(displayId).innerHTML="";
		return;
	}

	xmlHttp=GetXmlHttpObject()
	
	if (xmlHttp==null)
	{
		alert ("Browser does not support HTTP Request");
		return;
	}
	var url="/content_rater.php";
	url=url+"?q="+rating;
	url=url+"&contentType="+contentTypeId;
	url=url+"&contentId="+contentId;
	url=url+"&fromBox="+fromBox;
	url=url+"&stylePrefix="+stylePrefix;
	url=url+"&sid="+Math.random();
	url=url+"&displayDivId="+displayVar;
	
	//set if isRateaPic
	if(checkIfIsRateaPic(style)){
		
		////////////probably have to readjust/////////////
		//get next information
		//showNextId = '';
		
		if(document.getElementById('imageGalleryXRefIdsList')){
			xRefIds = document.getElementById('imageGalleryXRefIdsList').value
			///////////////
			/*
			// split into array
			imageGalleryXRefIdsArray = document.getElementById('imageGalleryXRefIdsList').value.split(',');
		
			for(var i=0; i<imageGalleryXRefIdsArray.length; i++){
				//alert('iterate' + imageGalleryXRefIdsArray[i]);
				if(imageGalleryXRefIdsArray[i] == contentId){
					
					//got the current, so now get the next Id
					showNextId = imageGalleryXRefIdsArray[i+1];
					//alert('shownext: ' + showNextId);
					break;
				}
			}
			*/
			/////////////////
		}
		
		url=url+"&isRateaPic=1";
		//url=url+"&showNextId="+showNextId;
		url=url+"&xRefIds="+xRefIds;//pass all xref id for rate a pic functionality and cookie purpose
		
	}
	else{
		url=url+"&isRateaPic=0";
	}
	
	xmlHttp.onreadystatechange=stateChangedContentRating;
	xmlHttp.open("GET",url,true);
	xmlHttp.send(null);
} // End function: rate_content.

/*
* Name:
*	GetXmlHttpObject
*
* Description:
*	function called on each changed state of the XMLHttpRequest object
*
*
* Pre-conditions:
*   
*
* Post-conditions:
*  On the ready state 4 , it will get the responseText and will display the rating in displayVar div.
* Log:
*  Dipak A.Basantani   09/20/2007
*/
function stateChangedContentRating()
{
	if (xmlHttp.readyState==4 || xmlHttp.readyState=="complete")
	{
		if(checkIfIsRateaPic(style)){
			
			var responseText;

			var propObj;
		
			var pairsArray;
		
			var pairIndex;
		
			var keyValueArray;
		
			var pairKey;
		
			var pairValue;
		
			var messageElts;
		
			var eltIndex;
		
			var messageEltId;

	
			responseText = xmlHttp.responseText;

		//alert(responseText);

		// Initialize an object whose properties will be set via the AJAX response's key-value pairs.

		propObj = new Object();


		// Parse the AJAX response for key-value pairs. Keys and values are URL-encoded, in the

		// form: key=value,key=value,key=value,...,key=value

		pairsArray = responseText.split('#');

		for (pairIndex = pairsArray.length - 1; pairIndex >= 0; pairIndex--) { // For: iterate through pairs.
			
			//first index is not pair, it is all the echos before rateapic array was created)			
			if(pairIndex == 0){
				responseText = pairsArray[0];
			}
			else{
				keyValueArray = (pairsArray[pairIndex]).split('=');
	
				pairKey = '' + unescape(keyValueArray[0]);
	
				pairValue = '' + unescape(keyValueArray[1]);
	
				propObj[pairKey] = pairValue;
			}

		} // End for: iterate through pairs.
		
		//
		//	IF RATEAPICREFRESH IS ENABLED, REDIRECT AND EXIT
		//
		
		//array contains.........
		// showAvg, responseText, thePrevImgRatingAvg, thePrevImgRatingVal, thePrevImgId,theNextImgId, 
		// rateapicRefreshEnabled, refreshPageUrl
		
			if(parseInt(propObj['rateapicRefreshEnabled']) && propObj['refreshPageUrl']){
				
				location.href= propObj['refreshPageUrl'];
				//exit;//exit out from executing following code
			}//end if rateapicRefreshEnabled
			

		// Store known key-value pairs as local variables.
		
			isReadyToRateNext	= parseInt(propObj['isReadyToRateNext']);

		if(isReadyToRateNext){

			//gather needed update info for prev area            		
			thePrevImgId		= propObj['thePrevImgId'];
			thePrevImgPath		= propObj['thePrevImgPath'];
        	thePrevImgWidth		= parseInt(propObj['thePrevImgWidth']);
        	thePrevImgHeight	= parseInt(propObj['thePrevImgHeight']);
        	
        	thePrevImgRatingAvg = propObj['thePrevImgRatingAvg'];
        	thePrevImgRatingVal = propObj['thePrevImgRatingVal'];
			showAvg				= parseInt(propObj['showAvg']);

			//gather needed update info for current area
			theNextImgId		= propObj['theNextImgId'];			
        	theNextImgPath		= propObj['theNextImgPath'];
        	theNextImgWidth		= parseInt(propObj['theNextImgWidth']);
        	theNextImgHeight	= parseInt(propObj['theNextImgHeight']);
			
			theNextImgDesc		= propObj['theNextImgDesc'];
			theNextImgCaption	= propObj['theNextImgCaption'];

        	//precautions for js errors
        	if(document.getElementById(style + '_currentrateapic_img')){
        		theNextImgObj = document.getElementById(style + '_currentrateapic_img');
        		theNextImgObj.src = theNextImgPath;
        		theNextImgObj.width = theNextImgWidth;
        		theNextImgObj.height = theNextImgHeight;

        		//desc and caption
        		
        		document.getElementById(style + '_currentrateapic_imgdesc').innerHTML = theNextImgDesc;
        		document.getElementById(style + '_currentrateapic_imgcaption').innerHTML = theNextImgCaption;
        		       		
        		//if object exists
        		if(document.getElementById(style + '_prevrateapic_img')){

        			//
        			// the previous section div
        			//
        			
        			thePrevDivObj = document.getElementById(style + '_prevrateapic_div');
					thePrevRateInfoSpanObj = document.getElementById(style + '_prevrateapic_rateInfo');
					theChildNodes = thePrevRateInfoSpanObj.childNodes;
					
					//
					//destroy EVERYTHING in the span
					//
					
       				//delete child nodes text before appending more (if exists)
	        		if(thePrevDivObj.childNodes){

	        			//while there are child, remove last child (until no children exist)
	        			while(theChildNodes.length){
	        				thePrevRateInfoSpanObj.removeChild(thePrevRateInfoSpanObj.lastChild);
	        			}//end while loop
	        			
					}//end (thePrevDivObj.childNodes)
	        		
	        		
        			// then update img
        			thePrevImgObj = document.getElementById(style + '_prevrateapic_img');
        			thePrevImgObj.src = thePrevImgPath;
	        		thePrevImgObj.width = thePrevImgWidth;
	        		thePrevImgObj.height = thePrevImgHeight;
	        		
	        		//make entire preview visible	        		
	        		thePrevDivObj.style.display = "inline";
	        		
	        		avgRating = '';
	        		ratingVal = '';

					if(showAvg){
		        		thePrevRateInfoSpanObj.appendChild(document.createElement("br"));	        			        		
		        		thePrevRateInfoSpanObj.appendChild(document.createTextNode("Avg Rating: "+ thePrevImgRatingAvg));
					}
	        		thePrevRateInfoSpanObj.appendChild(document.createElement("br"));
	        		thePrevRateInfoSpanObj.appendChild(document.createTextNode("You gave: " + thePrevImgRatingVal));
        		}//end if prev img obj exists
        		
        	}//end if current img obj exists
		}//end if(isReadytoRateNext)
        	document.getElementById(displayId).innerHTML=responseText
		}//end if(checkIfIsRateaPic(style))
		else{
			document.getElementById(displayId).innerHTML= xmlHttp.responseText;
		}
	}
	else{
		document.getElementById(displayId).innerHTML= '<input type="image" src="/image/spinner.gif" border="0" alt="process going on" ><font class="'+style+'Label">Loading...... Please Wait.</font>';
		return;
	}
}// end function stateChanged

/*
* Name:
*	GetXmlHttpObject
*
* Description:
*	to get the object of the XMLHttp according to the browser type
*
*
* Pre-conditions:
*   
*
* Post-conditions:
*  return the object of the XMLHttpRequest
* Log:
*  Dipak A.Basantani   09/20/2007
*/
function GetXmlHttpObject()
{
var objXMLHttp=null

	if (window.XMLHttpRequest)
	{
		objXMLHttp=new XMLHttpRequest()
	}
	else if (window.ActiveXObject)
	{
		objXMLHttp=new ActiveXObject("Microsoft.XMLHTTP")
	}
return objXMLHttp
}//end function GetXmlHttpObject

/*
* Name:
*	displayRatingFromGalleryThumbnailBox
*
* Description:
*	display rating div from the gallary thumbnail box
*
*
* Pre-conditions:
*   imageGalleryXRefId - required
*
* Post-conditions:
*
* Log:
*  Dipak A.Basantani   12/19/2007
*/
function displayRatingFromGalleryThumbnailBox(imageGalleryXRefId)
{
	var imageGalaryDivObj = document.getElementById('ratingDiv_'+imageGalleryXRefId);
	var ratingDivObj = document.getElementById(imageGalleryXRefId+'_imageGallaryChild');
	var cloneObj;
	if(imageGalaryDivObj && imageGalaryDivObj != 'undefined')
	{
		//cloneObj = ratingDivObj.cloneNode(true);
		imageGalaryDivObj.appendChild(ratingDivObj);
		ratingDivObj.style.display = '';
	}	
}//- end function displayRatingFromGalleryThumbnailBox


/*
* Name:
*	displayRatingFromContentBox
*
* Description:
*	display rating div from the imageGallary Content Box
*
*
* Pre-conditions:
*   imageGalleryXRefId - required
*
* Post-conditions:
*
* Log:
*  Dipak A.Basantani   12/19/2007
*/
function displayRatingFromContentBox(imageGalleryXRefId)
{
	var imageGalaryDivObj = document.getElementById('ratingDiv_'+imageGalleryXRefId);
	var ratingDivObj = document.getElementById(imageGalleryXRefId+'_imageGallaryChild');
	var cloneObj;
	if(ratingDivObj && ratingDivObj != 'undefined')
	{
		//cloneObj = ratingDivObj.cloneNode(true);
		imageGalaryDivObj.appendChild(ratingDivObj);
		ratingDivObj.style.display = '';
	}	
}//- end function displayRatingFromGalleryThumbnailBox

/*
* Name:
*	checkIfIsRateaPic
*
* Description:
*	notes that box type is Rate a Pic by div. only rate a pic would have such div
*
*
* Pre-conditions:
*	theDivPrefix - used to distinguish js variables for if a non-'rate a pic box' is also added
*
* Post-conditions:
*	returns true or false
*
* Log:
*  	Phuc Thieu  02/07/2008
*		- Creation
*/

function checkIfIsRateaPic(theDivPrefix){

	if(document.getElementById(theDivPrefix + "_prevrateapic_div")){
		return true;
	}
	else{
		return false;
	}
}// function checkIfIsRateaPic

/*
 * Name:
 *      reloadIFrameContent
 *
 * Description:
 *      used to change the src of the Iframe
 *
 * Pre-conditions:
 *              url : url of the iframe
 *              name : name of the iframe
 *
 * Post-conditions:
 *      will load the iframe with the exact url content , if number of \
 *  iframes are more then two then use this function
 *
 * Functions:
 *      None
 *
 * Log:
 *      Dipak A. Basantani              03/18/2003
 *              - Creation
 *
 */
function reloadIFrameContent()
{

        // to get the IFrames of the pages
        var IFrames = document.getElementsByTagName('iframe');

        //
        // check if Iframes presents or not.
        //
        if(IFrames.length > 0 && IFrames != 'undefined')
        {
                //
                // loop through the Iframes. and reload it with .. src url again.
                //
                for (var i = 0; i < IFrames.length; i++)
                {
                        var iSource = IFrames[i].src;
                        IFrames[i].src = '';
                        IFrames[i].src = iSource;
                }// end for each for reloading IFrames
        }// end if checking iframe length
}// end function reloadIFrameContent

/*
 * Name:
 *	LoadIFrameWithUrlContent
 *
 * Description:
 *	 load iframe with the framname and url
 *
 * Pre-conditions:
 *	frameName : frame name
 *  url		  : url of the frame
 *
 * Post-conditions:
 *
 * Log:
 *  Dipak A.Basantani	04/15/2008
 *
 */
function LoadIFrameWithUrlContent(frameName,url)
{
	frames[frameName].window.location.href = url;
}// end function LoadIFrameWithUrlContent