ÿþ/************************************************************************************************************

Ajax poller

Copyright (C) 2006  DTHMLGoodies.com, Alf Magne Kalleland



This library is free software; you can redistribute it and/or

modify it under the terms of the GNU Lesser General Public

License as published by the Free Software Foundation; either

version 2.1 of the License, or (at your option) any later version.



This library is distributed in the hope that it will be useful,

but WITHOUT ANY WARRANTY; without even the implied warranty of

MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU

Lesser General Public License for more details.



You should have received a copy of the GNU Lesser General Public

License along with this library; if not, write to the Free Software

Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301  USA



Dhtmlgoodies.com., hereby disclaims all copyright interest in this script

written by Alf Magne Kalleland.



Alf Magne Kalleland, 2006

Owner of DHTMLgoodies.com

	

************************************************************************************************************/	









var serverSideFile = 'ajax-poller-cast-vote-php.php';

var voteLeftImage = 'images/graph_left_1.gif';

var voteRightImage = 'images/graph_right_1.gif';

var voteCenterImage = 'images/graph_middle_1.gif';



var graphMaxWidth = 130;	// It will actually be a little wider than this because of the rounded image at the left and right

var graphMinWidth = 15;	// Minimum size of graph

var pollScrollSpeed = 5;	// Lower = faster

var useCookiesToRememberCastedVotes = true;	// Use cookie to remember casted votes

var txt_totalVotes = 'E,EH9 *9/'/ F81'*:';



var ajaxObjects = new Array();

var pollVotes = new Array();

var pollVoteCounted = new Array();

var totalVotes = new Array();





/* Preload images */



var preloadedImages = new Array();

preloadedImages[0] = new Image();

preloadedImages[0].src = voteLeftImage;

preloadedImages[1] = new Image();

preloadedImages[1].src = voteRightImage;

preloadedImages[2] = new Image();

preloadedImages[2].src = voteCenterImage;



/*

These cookie functions are downloaded from 

http://www.mach5.com/support/analyzer/manual/html/General/CookiesJavaScript.htm

*/	

function Poller_Get_Cookie(name) { 

   var start = document.cookie.indexOf(name+"="); 

   var len = start+name.length+1; 

   if ((!start) && (name != document.cookie.substring(0,name.length))) return null; 

   if (start == -1) return null; 

   var end = document.cookie.indexOf(";",len); 

   if (end == -1) end = document.cookie.length; 

   return unescape(document.cookie.substring(len,end)); 

} 

// This function has been slightly modified

function Poller_Set_Cookie(name,value,expires,path,domain,secure) { 

	expires = expires * 60*60*24*1000;

	var today = new Date();

	var expires_date = new Date( today.getTime() + (expires) );

    var cookieString = name + "=" +escape(value) + 

       ( (expires) ? ";expires=" + expires_date.toGMTString() : "") + 

       ( (path) ? ";path=" + path : "") + 

       ( (domain) ? ";domain=" + domain : "") + 

       ( (secure) ? ";secure" : ""); 

    document.cookie = cookieString; 

}



	

function showVoteResults(pollId,ajaxIndex)

{

	

	document.getElementById('poller_waitMessage' + pollId).style.display='none';

	

	var xml = ajaxObjects[ajaxIndex].response;

	xml = xml.replace(/\n/gi,'');

	

	var reg = new RegExp("^.*?<pollerTitle>(.*?)<.*$","gi");

	var pollerTitle = xml.replace(reg,'$1');

	

	var resultDiv = document.getElementById('poller_results' + pollId);

	

	var titleP = document.createElement('P');

	titleP.className='result_pollerTitle';

	titleP.innerHTML = pollerTitle;

	resultDiv.appendChild(titleP);	

	

	var options = xml.split(/<option>/gi);

	

	pollVotes[pollId] = new Array();

	totalVotes[pollId] = 0;

	for(var no=1;no<options.length;no++){

		

		var elements = options[no].split(/</gi);

		var currentOptionId = false;

		for(var no2=0;no2<elements.length;no2++){

			if(elements[no2].substring(0,1)!='/'){

				var key = elements[no2].replace(/^(.*?)>.*$/gi,'$1');

				var value = elements[no2].replace(/^.*?>(.*)$/gi,'$1');

			

				if(key.indexOf('optionText')>=0){

					var pOption = document.createElement('P');

					pOption.className='result_pollerOption';

					pOption.innerHTML = value;

					resultDiv.appendChild(pOption);					

					

				}

				

				if(key.indexOf('optionId')>=0){

					currentOptionId = value/1;

				}

				

				if(key.indexOf('votes')>=0){

					var voteDiv = document.createElement('DIV');

					voteDiv.className='result_pollGraph';

					resultDiv.appendChild(voteDiv);	

					

					var leftImage = document.createElement('IMG');

					leftImage.src = voteLeftImage;

					voteDiv.appendChild(leftImage);

					

					

					var numberDiv = document.createElement('DIV');

					numberDiv.style.backgroundImage = 'url(\'' + voteCenterImage + '\')';

					numberDiv.innerHTML = '0%';

					numberDiv.id = 'result_voteTxt' + currentOptionId;

					voteDiv.appendChild(numberDiv);	

					

					var rightImage = document.createElement('IMG');

					rightImage.src = voteRightImage;

					voteDiv.appendChild(rightImage);						

					

					pollVotes[pollId][currentOptionId] = value;					

					totalVotes[pollId] = totalVotes[pollId]/1 + value/1;

				}

			}

		}

	}

	

	var totalVoteP = document.createElement('P');

	totalVoteP.className = 'result_totalVotes';

	totalVoteP.innerHTML = txt_totalVotes + totalVotes[pollId];

	voteDiv.appendChild(totalVoteP);	

	

	setPercentageVotes(pollId);

	slideVotes(pollId,0);

}



function setPercentageVotes(pollId)

{

	for(var prop in pollVotes[pollId]){

		pollVotes[pollId][prop] =  Math.round( (pollVotes[pollId][prop] / totalVotes[pollId]) * 100);				

	}	

	

	var currentSum = 0;

	for(var prop in pollVotes[pollId]){

		currentSum = currentSum + pollVotes[pollId][prop]/1;			

	}

	pollVotes[pollId][prop] = pollVotes[pollId][prop] + (100-currentSum);

	

	

}



function slideVotes(pollId,currentPercent)

{

	currentPercent = currentPercent/1 + 1;

	

	for(var prop in pollVotes[pollId]){

		if(pollVotes[pollId][prop]>=currentPercent){

			var obj = document.getElementById('result_voteTxt' + prop);

			obj.innerHTML = currentPercent + '%';

			obj.style.width = Math.max(graphMinWidth,Math.round(currentPercent/100*graphMaxWidth)) + 'px';

		}			

	}

	

	if(currentPercent<100)setTimeout('slideVotes("' + pollId + '","' + currentPercent + '")',pollScrollSpeed);

}





function prepareForPollResults(pollId)

{

	document.getElementById('poller_waitMessage' + pollId).style.display='block';

	document.getElementById('poller_question' + pollId).style.display='none';	

}





function castMyVote(pollId,formObj)

{	

	var elements = formObj.elements['vote[' + pollId + ']'];

	var optionId = false;

	for(var no=0;no<elements.length;no++){

		if(elements[no].checked)optionId = elements[no].value;

	}

	Poller_Set_Cookie('dhtmlgoodies_poller_' + pollId,'1',6000000);

	if(optionId){

	

		var ajaxIndex = ajaxObjects.length;

		ajaxObjects[ajaxIndex] = new sack();

		ajaxObjects[ajaxIndex].requestFile = serverSideFile + '?pollId=' + pollId + '&optionId=' + optionId;

		prepareForPollResults(pollId);

		ajaxObjects[ajaxIndex].onCompletion = function(){ showVoteResults(pollId,ajaxIndex); };	// Specify function that will be executed after file has been found

		ajaxObjects[ajaxIndex].runAJAX();		// Execute AJAX function	



	}	

}	



function displayResultsWithoutVoting(pollId)

{

	var ajaxIndex = ajaxObjects.length;

	ajaxObjects[ajaxIndex] = new sack();

	ajaxObjects[ajaxIndex].requestFile = serverSideFile + '?pollId=' + pollId;

	prepareForPollResults(pollId);

	ajaxObjects[ajaxIndex].onCompletion = function(){ showVoteResults(pollId,ajaxIndex); };	// Specify function that will be executed after file has been found

	ajaxObjects[ajaxIndex].runAJAX();		// Execute AJAX function		

	

	

}