// JavaScript Document

// Cookie handling functions for Pace and SetPace methods
function setCookie(name,value,days) {
    if (days) {
        var date = new Date();
        date.setTime(date.getTime()+(days*24*60*60*1000));
        var expires = "; expires="+date.toGMTString();
    }
    else var expires = "";
    document.cookie = name+"="+value+expires+"; path=/";
}

function getCookie(name) {
    var nameEQ = name + "=";
    var ca = document.cookie.split(';');
    for(var i=0;i < ca.length;i++) {
        var c = ca[i];
        while (c.charAt(0)==' ') c = c.substring(1,c.length);
        if (c.indexOf(nameEQ) == 0) return c.substring(nameEQ.length,c.length);
    }
    return null;
}

function deleteCookie(name) {
    setCookie(name,"",-1);
}

/**
Döljer element i array
*/
function hideElements(arrObject){
	$(arrObject).each(function(i,v){
		$(this).hide();
	});
}
function showElements(arrObject){
	$(arrObject).each(function(i,v){
		$(this).show();
	});
}



function showDialogBox(id){
	//Close all existing dialog boxes before opening the new one
	$(".ui-dialog-content").dialog("close");
	//Open the requested dialog box
	$(id).dialog("open");
}



function exitCourse(){
	//Avsluta aktiviteten i LMS'et
	//unloadPage();
	
	//I nuläget, dirigera användaren tillbaka till startsidan
	document.location.href = "default.htm";
}


/* OBJECT DATATYPE-CHECKER */

//Supported Video Types
var VideoTypes = [".mp4", ".m4v", ".f4v", ".mov", ".ogv", ".webm"];
var AudioTypes = [ ".aac", ".m4a", ".f4a", ".ogg", ".oga", ".mp3" ];
//Supported text types (For cdata)
var TextTypes = [".txt", ".html", ".htm", ".xml"];

//indata: object data's link
//outdata: video, cdata, false (unvalid file type)
function checkObjectDataType(objDataHref)
{
	var linkString = objDataHref.toString();
	var endString = "";
	var dotPos = linkString.lastIndexOf(".");
	if(dotPos === -1){
		//Not found
		return false;
	}
	else{
		endString = linkString.substring(dotPos);
	}
	//Checks for a video tag
	for(var i = 0; i < VideoTypes.length;i++){
		if(endString === VideoTypes[i]){
			return "video";
		}
	}
	//Checks for a audio tag
	for(var i = 0; i < AudioTypes.length;i++){
		if(endString === AudioTypes[i]){
			return "audio";
		}
	}
	//Checks for a cdata tag
	for(var j = 0; j < TextTypes.length;j++){
		if(endString === TextTypes[j]){
			return "cdata";
		}
	}
	return false;
}


function loadCDATA(objDataHref, divName, append){
	var divName2 = $("div[id='newdiv_"+divName+"']");
	
	$(divName2).load(objDataHref,function(){
		
		//Check if cdata contains object/video/audio
		if(cdataHasObject(divName)){
			
			//Handle stuff in extrainfo sections
			if($("#"+divName).hasClass("Extra_Info_object")){
				$(divName2).detach().appendTo("#"+divName);
				return;
			} else if($("#"+divName).hasClass("Extra_Info_figure")){
				$(divName2).detach().appendTo("#"+divName);
				return;
			} 
			
			//Move object out from scrollable div if it isn't part of an extrainfo section
			if(append == undefined || append == false){
				$(divName2).detach().appendTo("."+elements.pageDelimiter);
			}else{
				$(".object").removeClass("object");
				$(".scrollable").css("width","500px");
			}
		}else{
			$(divName2).appendTo("."+elements.pageDelimiter);
			$(".object").css("text-align","center").css("position","relative").css("top","20px");
			$(".heading1").css("top","-=40px").css("left","-=10px");
		}
	});
	
}
function cdataHasObject(id){
	var objects = $(".object");
	
	if($(objects).length > 0){
		//Hittade
		return true;
	}
	return false;
}


/* VIDEO FUNCTIONS */

var numVideos = 0; //keeps track of how many videos in order to create unique ids for each video

//createVideo function
//indata: an array with links to the videos (hopefully same video in different formats)
//outdata: a string with the right encoding and tags to play video in a variety of formats
var videoID = null;
function createVideo(arrayWithFileNames, template){
	//Creates the unique name of the video id
	var idString = 'videoID' + numVideos;
	//Holds the html markup to embed a video into a page
	var videoObjekt = "<video id=" + idString +">";
	videoID = idString;
	var posterimg = "";
	//goes through the array and creates a video source from each link
	for(var i = 0; i < arrayWithFileNames.length;i++){
		videoObjekt = videoObjekt + "<source src=" + arrayWithFileNames[i] + ">";
		posterimg = arrayWithFileNames[i].substring(0,arrayWithFileNames[i].lastIndexOf("."))+".jpg";
	}

	videoObjekt = videoObjekt + "</video>";

	//Kolla om ljudsetting är avstängd, i såna fall, muta ljudet på videon
	var mute = false;
	if( getCookie("speakerState") == "off" ){
		mute = true;
	}
	
	var vHeight = VIDEO_HEIGHT, vWidth = VIDEO_WIDTH;
	
	var extraObjects = $(this).hasClass("Extra_Info_object");
	if(extraObjects.length){
		//Maybe we should do something here?
	} else{
		//var template = c.currentPageItem.template;
	}
	
	if(template.toLowerCase() == "page_wide" ||template.toLowerCase() == "page_image" || template.toLowerCase() == "page_double_text" || template.toLowerCase() == "page_centered_text" || template.toLowerCase() == "start" || template.toLowerCase() == "chapter_page"){
		vHeight = HELBILD_VIDEO_HEIGHT;
		vWidth = HELBILD_VIDEO_WIDTH;
	}

	videoObjekt = videoObjekt + '<script type="text/javascript">';
	//videoObjekt = videoObjekt +  		'jwplayer("'+ idString + '").setup({ autostart: false, mute:"'+mute+'", repeat: "none", image: "'+posterimg+'", controls:true, controlbar:"over", height: ' + vHeight + ', width: ' + vWidth + ', modes: [ ';
	videoObjekt = videoObjekt +  		'jwplayer("'+ idString + '").setup({ autostart: false, mute:"'+mute+'", repeat: "none", image: "'+posterimg+'", controls:true, controlbar:"bottom", height: "' + vHeight + '", width: "' + vWidth + '", modes: [ ';
	//the mode bit says that the jwplayer should try with html5 before trying with flash
	videoObjekt = videoObjekt + "{ type: 'html5' }, { type: 'flash', src: 'javascript/player.swf' }]}) </script>";
	
	numVideos++;
	
	return videoObjekt;
}

function y(){
	var r = false;
	if(window.console){
		r = true;
	}
	return r;
}

var between = function(a,b){
	if(a>b){
		return this>=b && this<=a;
	}else{
		return this>=a && this<=b;
	}
}
Number.prototype.between = between;



function getFlashMovieObject(movieName){
  if (window.document[movieName]){
      return window.document[movieName];
  }
  
  if (navigator.appName.indexOf("Microsoft Internet")==-1){
    if (document.embeds && document.embeds[movieName])
      return document.embeds[movieName]; 
  } else {
	// if (navigator.appName.indexOf("Microsoft Internet")!=-1)
    return document.getElementById(movieName);
  }
}


Content.prototype.doSearch = function(strFor){
	var c = this;
	var searchPage = c.page.split("#")[0];
	
	var pages = [];
	var texts = [];
	var chapters = [];
	$.get(searchPage,function(data){
		var divs = $(data).find("div:contains('"+strFor+"')");
		
		$(divs).each(function(i,v){
			if($(this).parent().hasClass('section-3') && !$(this).hasClass('section-4') && $(this).parent().attr("webtemplate") != "Quiz_External"){
				//hittat texten inuti section
				//lägg till i array och sortera sedan ut unika sidor från arrayen
				
				pages.push($(this).parent().find(".heading1").filter(":first").attr("id"));
				texts.push($(this).parent().find(".heading1").filter(":first").text());
				chapters.push($(this).parentsUntil(".section-1").parent().find("."+elements.chapterTitle).text());
				
			}
		});
		
		var result = $.unique(pages);
		var textsTrim = $.unique(texts);
		//var chaptersTrim = $.unique(chapters);
		//chapters = chapters.reverse();
		//Presentera resultatet i en popup
		
		c.searchResult(result.reverse(),textsTrim.reverse(),strFor,searchPage,chapters);
	});
}
Content.prototype.searchResult = function(resultArray,textArray,strFor,landingpage,chapters){
	var c = this;
	var strTitle = "Sökträffar för \""+strFor+"\"";
	var strText = "";
	
	
	$(resultArray).each(function(i,v){
		
		if(typeof textArray[i] != "undefined"){
			
			strText += "<font size='-2'><a class='searchLink' href='"+DEFAULT_PAGE+"?id="+landingpage+"#"+v+"'>"+chapters[i]+" > "+textArray[i]+"</a><br></font>";
		}
		
	});
	$("#resultText").html(strTitle+"<br><br>"+strText);
	var hrefs = $("#resultText").find(".searchLink");
	$(hrefs).each(function(ii,vv){
		$(vv).click(function(e){
			c.trigger();
		});
	});
	$( "#searchResult" ).dialog( "open" );
	
	
	//Sätt cookie för att lagra sökord
	setCookie("searchString",strFor,360);
}

Content.prototype.trigger = function(){
	var c = this;
	//FIX SEARCH
	//c.toc.PageSelect();
}

//Postmessage
var XD = function(){

    var interval_id,
    last_hash,
    cache_bust = 1,
    attached_callback,
    window = this;

    return {
        postMessage : function(message, target_url, target) {
            if (!target_url) {
                return;
            }
            target = target || parent;  // default to parent
            if (window['postMessage']) {
                // the browser supports window.postMessage, so call it with a targetOrigin
                // set appropriately, based on the target_url parameter.
                target['postMessage'](message, target_url.replace( /([^:]+:\/\/[^\/]+).*/, '$1'));
            } else if (target_url) {
                // the browser does not support window.postMessage, so use the window.location.hash fragment hack
                target.location = target_url.replace(/#.*$/, '') + '#' + (+new Date) + (cache_bust++) + '&' + message;
            }
        },
        receiveMessage : function(callback, source_origin) {
			
            // browser supports window.postMessage
            if (window['postMessage']) {
                // bind the callback to the actual event associated with window.postMessage
                if (callback) {
                    attached_callback = function(e) {
                        if ((typeof source_origin === 'string' && e.origin !== source_origin)
                        || (Object.prototype.toString.call(source_origin) === "[object Function]" && source_origin(e.origin) === !1)) {
                             return !1;
                         }
                         callback(e);
                     };
                 }
                 if (window['addEventListener']) {
                     window[callback ? 'addEventListener' : 'removeEventListener']('message', attached_callback, !1);
                 } else {
                     window[callback ? 'attachEvent' : 'detachEvent']('onmessage', attached_callback);
                 }
             } else {
                 // a polling loop is started & callback is called whenever the location.hash changes
                 interval_id && clearInterval(interval_id);
                 interval_id = null;
                 if (callback) {
                     interval_id = setInterval(function() {
                         var hash = document.location.hash,
                         re = /^#?\d+&/;
                         if (hash !== last_hash && re.test(hash)) {
                             last_hash = hash;
                             callback({data: hash.replace(re, '')});
                         }
                     }, 100);
                 }
             }
         }
    };
}();

//Function to extract values from querystring-parameters
function getParameterByName(name, url) {
    if (!url) {
		try{
      		url = window.parent.frames("scorm_object").src;
		}catch(e){
			url = window.parent.frames["scorm_object"].src;
		}
    }
	
    name = name.replace(/[\[\]]/g, "\\$&");
    var regex = new RegExp("[?&]" + name + "(=([^&#]*)|&|#|$)"),
        results = regex.exec(url);
    if (!results) return null;
    if (!results[2]) return '';
    var val = decodeURIComponent(results[2].replace(/\+/g, " "));
	
    return val;
}

//Nice functions stolen from stackoverflow that replaces all occurances of 'replace' in the string 'search'
String.prototype.replaceAll = function(search, replace){
    //if replace is not sent, return original string otherwise it will
    //replace search string with 'undefined'.
    if (replace === undefined) {
        return this.toString();
    }

    return this.replace(new RegExp('[' + search + ']', 'g'), replace);
};

function getInternetExplorerVersion()
{
  var rv = -1;
  if (navigator.appName == 'Microsoft Internet Explorer')
  {
    var ua = navigator.userAgent;
    var re  = new RegExp("MSIE ([0-9]{1,}[\.0-9]{0,})");
    if (re.exec(ua) != null)
      rv = parseFloat( RegExp.$1 );
  }
  else if (navigator.appName == 'Netscape')
  {
    var ua = navigator.userAgent;
    var re  = new RegExp("Trident/.*rv:([0-9]{1,}[\.0-9]{0,})");
    if (re.exec(ua) != null)
      rv = parseFloat( RegExp.$1 );
  }
  return rv;
}


XD.receiveMessage(function(message){
	content.receiveMessage(message);
}, 'http://autotech.fmgateway.com');



 // adds .naturalWidth() and .naturalHeight() methods to jQuery
  // for retreaving a normalized naturalWidth and naturalHeight.
   /* (function($){
    var
    props = ['Width', 'Height'],
    prop;

    while (prop = props.pop()) {
    (function (natural, prop) {
      $.fn[natural] = (natural in new Image()) ? 
      function () {
      return this[0][natural];
      } : 
      function () {
      var 
      node = this[0],
      img,
      value;

      if (node.tagName.toLowerCase() === 'img') {
        img = new Image();
        img.src = node.src,
        value = img[prop];
      }
      return value;
      };
    }('natural' + prop, prop.toLowerCase()));
    }
  }(jQuery));*/

  // Example usage:
  /*var 
  nWidth = $('img#example').naturalWidth(),
  nHeight = $('img#example').naturalHeight();*/