BrechtDeMan@873: /**
BrechtDeMan@873:  *  ape.js
BrechtDeMan@873:  *  Create the APE interface
BrechtDeMan@873:  */
BrechtDeMan@873: 
BrechtDeMan@873: // preTest - In preTest state
BrechtDeMan@873: // testRun-ID - In test running, test Id number at the end 'testRun-2'
BrechtDeMan@873: // testRunPost-ID - Post test of test ID
BrechtDeMan@873: // testRunPre-ID - Pre-test of test ID
BrechtDeMan@873: // postTest - End of test, final submission!
BrechtDeMan@873: 
BrechtDeMan@873: 
BrechtDeMan@873: // Once this is loaded and parsed, begin execution
BrechtDeMan@873: loadInterface();
BrechtDeMan@873: 
BrechtDeMan@873: function loadInterface() {
BrechtDeMan@873: 	
BrechtDeMan@873: 	// Get the dimensions of the screen available to the page
BrechtDeMan@873: 	var width = window.innerWidth;
BrechtDeMan@873: 	var height = window.innerHeight;
BrechtDeMan@873: 	
BrechtDeMan@873: 	// The injection point into the HTML page
BrechtDeMan@873: 	interfaceContext.insertPoint = document.getElementById("topLevelBody");
BrechtDeMan@873: 	var testContent = document.createElement('div');
BrechtDeMan@873: 	
BrechtDeMan@873: 	testContent.id = 'testContent';
BrechtDeMan@873: 
BrechtDeMan@873: 	
BrechtDeMan@873: 	// Create APE specific metric functions
BrechtDeMan@873: 	audioEngineContext.metric.initialiseTest = function()
BrechtDeMan@873: 	{
BrechtDeMan@873: 	};
BrechtDeMan@873: 	
BrechtDeMan@873: 	audioEngineContext.metric.sliderMoved = function()
BrechtDeMan@873: 	{
BrechtDeMan@873: 		
BrechtDeMan@873: 		var id = this.data;
BrechtDeMan@873: 		this.data = -1;
BrechtDeMan@873: 		var position = convSliderPosToRate(id);
BrechtDeMan@873:         console.log('slider ' + id + ': '+ position + ' (' + time + ')'); // DEBUG/SAFETY: show position and slider id
BrechtDeMan@873: 		if (audioEngineContext.timer.testStarted)
BrechtDeMan@873: 		{
BrechtDeMan@873: 			audioEngineContext.audioObjects[id].metric.moved(time,position);
BrechtDeMan@873: 		}
BrechtDeMan@873: 	};
BrechtDeMan@873: 	
BrechtDeMan@873: 	audioEngineContext.metric.sliderPlayed = function(id)
BrechtDeMan@873: 	{
BrechtDeMan@873: 		var time = audioEngineContext.timer.getTestTime();
BrechtDeMan@873: 		if (audioEngineContext.timer.testStarted)
BrechtDeMan@873: 		{
BrechtDeMan@873: 			if (this.lastClicked >= 0)
BrechtDeMan@873: 			{
BrechtDeMan@873: 				audioEngineContext.audioObjects[this.lastClicked].metric.listening(time);
BrechtDeMan@873: 			}
BrechtDeMan@873: 			this.lastClicked = id;
BrechtDeMan@873: 			audioEngineContext.audioObjects[id].metric.listening(time);
BrechtDeMan@873: 		}
BrechtDeMan@873:         console.log('slider ' + id + ' played (' + time + ')'); // DEBUG/SAFETY: show played slider id
BrechtDeMan@873: 	};
BrechtDeMan@873: 	
BrechtDeMan@873: 	// Bindings for interfaceContext
BrechtDeMan@873: 	Interface.prototype.checkAllPlayed = function()
BrechtDeMan@873: 	{
BrechtDeMan@873: 		hasBeenPlayed = audioEngineContext.checkAllPlayed();
BrechtDeMan@873: 		if (hasBeenPlayed.length > 0) // if a fragment has not been played yet
BrechtDeMan@873: 	    {
BrechtDeMan@873: 	    	str = "";
BrechtDeMan@873: 	    	if (hasBeenPlayed.length > 1) {
BrechtDeMan@873: 		    	for (var i=0; i<hasBeenPlayed.length; i++) {
BrechtDeMan@873: 		    		str = str + hasBeenPlayed[i];
BrechtDeMan@873: 		    		if (i < hasBeenPlayed.length-2){
BrechtDeMan@873: 		    			str += ", ";
BrechtDeMan@873: 		    		} else if (i == hasBeenPlayed.length-2) {
BrechtDeMan@873: 		    			str += " or ";
BrechtDeMan@873: 		    		}
BrechtDeMan@873: 		    	}
BrechtDeMan@873: 		    	alert('You have not played fragments ' + str + ' yet. Please listen, rate and comment all samples before submitting.');
BrechtDeMan@873: 	       } else {
BrechtDeMan@873: 	       		alert('You have not played fragment ' + hasBeenPlayed[0] + ' yet. Please listen, rate and comment all samples before submitting.');
BrechtDeMan@873: 	       }
BrechtDeMan@873: 	        return false;
BrechtDeMan@873: 	    }
BrechtDeMan@873: 	    return true;
BrechtDeMan@873: 	};
BrechtDeMan@873: 	
BrechtDeMan@873: 	Interface.prototype.checkAllMoved = function() {
BrechtDeMan@873: 		var audioObjs = audioEngineContext.audioObjects;
BrechtDeMan@873: 		var state = true;
BrechtDeMan@873: 		var strNums = [];
BrechtDeMan@873: 		for (var i=0; i<audioObjs.length; i++)
BrechtDeMan@873: 		{
BrechtDeMan@873: 			if (audioObjs[i].metric.wasMoved == false) {
BrechtDeMan@873: 				state = false;
BrechtDeMan@873: 				strNums.push(i);
BrechtDeMan@873: 			}
BrechtDeMan@873: 		}
BrechtDeMan@873: 		if (state == false) {
BrechtDeMan@873: 			if (strNums.length > 1) {
BrechtDeMan@873: 				var str = "";
BrechtDeMan@873: 		    	for (var i=0; i<strNums.length; i++) {
BrechtDeMan@873: 		    		str = str + strNums[i];
BrechtDeMan@873: 		    		if (i < strNums.length-2){
BrechtDeMan@873: 		    			str += ", ";
BrechtDeMan@873: 		    		} else if (i == strNums.length-2) {
BrechtDeMan@873: 		    			str += " or ";
BrechtDeMan@873: 		    		}
BrechtDeMan@873: 		    	}
BrechtDeMan@873: 		    	alert('You have not moved fragments ' + str + ' yet. Please listen, rate and comment all samples before submitting.');
BrechtDeMan@873: 	       } else {
BrechtDeMan@873: 	       		alert('You have not moved fragment ' + strNums[0] + ' yet. Please listen, rate and comment all samples before submitting.');
BrechtDeMan@873: 	       }
BrechtDeMan@873: 		}
BrechtDeMan@873: 		return state;
BrechtDeMan@873: 	};
BrechtDeMan@873: 	
BrechtDeMan@873: 	Interface.prototype.checkAllCommented = function() {
BrechtDeMan@873: 		var audioObjs = audioEngineContext.audioObjects;
BrechtDeMan@873: 		var audioHolder = testState.stateMap[testState.stateIndex];
BrechtDeMan@873: 		var state = true;
BrechtDeMan@873: 		if (audioHolder.elementComments) {
BrechtDeMan@873: 			var strNums = [];
BrechtDeMan@873: 			for (var i=0; i<audioObjs.length; i++)
BrechtDeMan@873: 			{
BrechtDeMan@873: 				if (audioObjs[i].commentDOM.trackCommentBox.value.length == 0) {
BrechtDeMan@873: 					state = false;
BrechtDeMan@873: 					strNums.push(i);
BrechtDeMan@873: 				}
BrechtDeMan@873: 			}
BrechtDeMan@873: 			if (state == false) {
BrechtDeMan@873: 				if (strNums.length > 1) {
BrechtDeMan@873: 					var str = "";
BrechtDeMan@873: 			    	for (var i=0; i<strNums.length; i++) {
BrechtDeMan@873: 			    		str = str + strNums[i];
BrechtDeMan@873: 			    		if (i < strNums.length-2){
BrechtDeMan@873: 			    			str += ", ";
BrechtDeMan@873: 			    		} else if (i == strNums.length-2) {
BrechtDeMan@873: 			    			str += " or ";
BrechtDeMan@873: 			    		}
BrechtDeMan@873: 			    	}
BrechtDeMan@873: 			    	alert('You have not commented on fragments ' + str + ' yet. Please listen, rate and comment all samples before submitting.');
BrechtDeMan@873: 		       } else {
BrechtDeMan@873: 		       		alert('You have not commented on fragment ' + strNums[0] + ' yet. Please listen, rate and comment all samples before submitting.');
BrechtDeMan@873: 		       }
BrechtDeMan@873: 			}
BrechtDeMan@873: 		}
BrechtDeMan@873: 		return state;
BrechtDeMan@873: 	};
BrechtDeMan@873: 	
BrechtDeMan@873: 	// Bindings for audioObjects
BrechtDeMan@873: 	
BrechtDeMan@873: 	// Create the top div for the Title element
BrechtDeMan@873: 	var titleAttr = specification.title;
BrechtDeMan@873: 	var title = document.createElement('div');
BrechtDeMan@873: 	title.className = "title";
BrechtDeMan@873: 	title.align = "center";
BrechtDeMan@873: 	var titleSpan = document.createElement('span');
BrechtDeMan@873: 	
BrechtDeMan@873: 	// Set title to that defined in XML, else set to default
BrechtDeMan@873: 	if (titleAttr != undefined) {
BrechtDeMan@873: 		titleSpan.textContent = titleAttr;
BrechtDeMan@873: 	} else {
BrechtDeMan@873: 		titleSpan.textContent =  'Listening test';
BrechtDeMan@873: 	}
BrechtDeMan@873: 	// Insert the titleSpan element into the title div element.
BrechtDeMan@873: 	title.appendChild(titleSpan);
BrechtDeMan@873: 	
BrechtDeMan@873: 	var pagetitle = document.createElement('div');
BrechtDeMan@873: 	pagetitle.className = "pageTitle";
BrechtDeMan@873: 	pagetitle.align = "center";
BrechtDeMan@873: 	var titleSpan = document.createElement('span');
BrechtDeMan@873: 	titleSpan.id = "pageTitle";
BrechtDeMan@873: 	pagetitle.appendChild(titleSpan);
BrechtDeMan@873: 	
BrechtDeMan@873: 	// Create Interface buttons!
BrechtDeMan@873: 	var interfaceButtons = document.createElement('div');
BrechtDeMan@873: 	interfaceButtons.id = 'interface-buttons';
BrechtDeMan@873: 	
BrechtDeMan@873: 	// Create playback start/stop points
BrechtDeMan@873: 	var playback = document.createElement("button");
BrechtDeMan@873: 	playback.innerHTML = 'Stop';
BrechtDeMan@873: 	playback.id = 'playback-button';
BrechtDeMan@873: 	// onclick function. Check if it is playing or not, call the correct function in the
BrechtDeMan@873: 	// audioEngine, change the button text to reflect the next state.
BrechtDeMan@873: 	playback.onclick = function() {
BrechtDeMan@873: 		if (audioEngineContext.status == 1) {
BrechtDeMan@873: 			audioEngineContext.stop();
BrechtDeMan@873: 			this.innerHTML = 'Stop';
BrechtDeMan@873:             var time = audioEngineContext.timer.getTestTime();
BrechtDeMan@873:             console.log('Stopped at ' + time); // DEBUG/SAFETY
BrechtDeMan@873: 		}
BrechtDeMan@873: 	};
BrechtDeMan@873: 	// Create Submit (save) button
BrechtDeMan@873: 	var submit = document.createElement("button");
BrechtDeMan@873: 	submit.innerHTML = 'Submit';
BrechtDeMan@873: 	submit.onclick = buttonSubmitClick;
BrechtDeMan@873: 	submit.id = 'submit-button';
BrechtDeMan@873: 	// Append the interface buttons into the interfaceButtons object.
BrechtDeMan@873: 	interfaceButtons.appendChild(playback);
BrechtDeMan@873: 	interfaceButtons.appendChild(submit);
BrechtDeMan@873: 	
BrechtDeMan@873: 	// Now create the slider and HTML5 canvas boxes
BrechtDeMan@873: 	
BrechtDeMan@873: 	// Create the div box to center align
BrechtDeMan@873: 	var sliderBox = document.createElement('div');
BrechtDeMan@873: 	sliderBox.className = 'sliderCanvasDiv';
BrechtDeMan@873: 	sliderBox.id = 'sliderCanvasHolder';
BrechtDeMan@873: 	
BrechtDeMan@873: 	// Create the slider box to hold the slider elements
BrechtDeMan@873: 	var canvas = document.createElement('div');
BrechtDeMan@873: 	canvas.id = 'slider';
BrechtDeMan@873: 	canvas.align = "left";
BrechtDeMan@873: 	canvas.addEventListener('dragover',function(event){
BrechtDeMan@873: 		event.preventDefault();
BrechtDeMan@873: 		return false;
BrechtDeMan@873: 	},false);
BrechtDeMan@873: 	var sliderMargin = document.createAttribute('marginsize');
BrechtDeMan@873: 	sliderMargin.nodeValue = 42; // Set default margins to 42px either side
BrechtDeMan@873: 	// Must have a known EXACT width, as this is used later to determine the ratings
BrechtDeMan@873: 	var w = (Number(sliderMargin.nodeValue)+8)*2;
BrechtDeMan@873: 	canvas.style.width = width - w +"px";
BrechtDeMan@873: 	canvas.style.marginLeft = sliderMargin.nodeValue +'px';
BrechtDeMan@873: 	canvas.setAttributeNode(sliderMargin);
BrechtDeMan@873: 	sliderBox.appendChild(canvas);
BrechtDeMan@873: 	
BrechtDeMan@873: 	// Create the div to hold any scale objects
BrechtDeMan@873: 	var scale = document.createElement('div');
BrechtDeMan@873: 	scale.className = 'sliderScale';
BrechtDeMan@873: 	scale.id = 'sliderScaleHolder';
BrechtDeMan@873: 	scale.align = 'left';
BrechtDeMan@873: 	sliderBox.appendChild(scale);
BrechtDeMan@873: 	
BrechtDeMan@873: 	// Global parent for the comment boxes on the page
BrechtDeMan@873: 	var feedbackHolder = document.createElement('div');
BrechtDeMan@873: 	feedbackHolder.id = 'feedbackHolder';
BrechtDeMan@873: 	
BrechtDeMan@873: 	testContent.style.zIndex = 1;
BrechtDeMan@873: 	interfaceContext.insertPoint.innerHTML = null; // Clear the current schema
BrechtDeMan@873: 	
BrechtDeMan@873: 	// Inject into HTML
BrechtDeMan@873: 	testContent.appendChild(title); // Insert the title
BrechtDeMan@873: 	testContent.appendChild(pagetitle);
BrechtDeMan@873: 	testContent.appendChild(interfaceButtons);
BrechtDeMan@873: 	testContent.appendChild(sliderBox);
BrechtDeMan@873: 	testContent.appendChild(feedbackHolder);
BrechtDeMan@873: 	interfaceContext.insertPoint.appendChild(testContent);
BrechtDeMan@873: 
BrechtDeMan@873: 	// Load the full interface
BrechtDeMan@873: 	testState.initialise();
BrechtDeMan@873: 	testState.advanceState();
BrechtDeMan@873: 	
BrechtDeMan@873: }
BrechtDeMan@873: 
BrechtDeMan@873: function loadTest(audioHolderObject)
BrechtDeMan@873: {
BrechtDeMan@873: 	
BrechtDeMan@873: 	// Reset audioEngineContext.Metric globals for new test
BrechtDeMan@873: 	audioEngineContext.newTestPage();
BrechtDeMan@873: 	
BrechtDeMan@873: 	var id = audioHolderObject.id;
BrechtDeMan@873: 	
BrechtDeMan@873: 	var feedbackHolder = document.getElementById('feedbackHolder');
BrechtDeMan@873: 	var canvas = document.getElementById('slider');
BrechtDeMan@873: 	feedbackHolder.innerHTML = null;
BrechtDeMan@873: 	canvas.innerHTML = null;
BrechtDeMan@873: 	
BrechtDeMan@873: 	//var playbackHolder = document.createElement('div');
BrechtDeMan@873: 	//playbackHolder.style.width = "100%";
BrechtDeMan@873: 	//playbackHolder.align = 'center';
BrechtDeMan@873: 	//playbackHolder.appendChild(interfaceContext.playhead.object);
BrechtDeMan@873: 	//feedbackHolder.appendChild(playbackHolder);
BrechtDeMan@873: 	// Setup question title
BrechtDeMan@873: 	var interfaceObj = audioHolderObject.interfaces;
BrechtDeMan@873: 	var commentBoxPrefix = "Comment on track";
BrechtDeMan@873: 	if (interfaceObj.length != 0) {
BrechtDeMan@873: 		interfaceObj = interfaceObj[0];
BrechtDeMan@873: 		var titleNode = interfaceObj.title;
BrechtDeMan@873: 		if (titleNode != undefined)
BrechtDeMan@873: 		{
BrechtDeMan@873: 			document.getElementById('pageTitle').textContent = titleNode;
BrechtDeMan@873: 		}
BrechtDeMan@873: 		var positionScale = canvas.style.width.substr(0,canvas.style.width.length-2);
BrechtDeMan@873: 		var offset = Number(document.getElementById('slider').attributes['marginsize'].value);
BrechtDeMan@873: 		var scale = document.getElementById('sliderScaleHolder');
BrechtDeMan@873: 		scale.innerHTML = null;
BrechtDeMan@873: 		$(interfaceObj.scale).each(function(index,scaleObj){
BrechtDeMan@873: 			var value = document.createAttribute('value');
BrechtDeMan@873: 			var position = Number(scaleObj[0])*0.01;
BrechtDeMan@873: 			value.nodeValue = position;
BrechtDeMan@873: 			var pixelPosition = (position*positionScale)+offset;
BrechtDeMan@873: 			var scaleDOM = document.createElement('span');
BrechtDeMan@873: 			scaleDOM.textContent = scaleObj[1];
BrechtDeMan@873: 			scale.appendChild(scaleDOM);
BrechtDeMan@873: 			scaleDOM.style.left = Math.floor((pixelPosition-($(scaleDOM).width()/2)))+'px';
BrechtDeMan@873: 			scaleDOM.setAttributeNode(value);
BrechtDeMan@873: 		});
BrechtDeMan@873: 		
BrechtDeMan@873: 		if (interfaceObj.commentBoxPrefix != undefined) {
BrechtDeMan@873: 			commentBoxPrefix = interfaceObj.commentBoxPrefix;
BrechtDeMan@873: 		}
BrechtDeMan@873: 	}
BrechtDeMan@873: 
BrechtDeMan@873: 	/// CHECK FOR SAMPLE RATE COMPATIBILITY
BrechtDeMan@873: 	if (audioHolderObject.sampleRate != undefined) {
BrechtDeMan@873: 		if (Number(audioHolderObject.sampleRate) != audioContext.sampleRate) {
BrechtDeMan@873: 			var errStr = 'Sample rates do not match! Requested '+Number(audioHolderObject.sampleRate)+', got '+audioContext.sampleRate+'. Please set the sample rate to match before completing this test.';
BrechtDeMan@873: 			alert(errStr);
BrechtDeMan@873: 			return;
BrechtDeMan@873: 		}
BrechtDeMan@873: 	}
BrechtDeMan@873: 	
BrechtDeMan@873: 	var commentShow = audioHolderObject.elementComments;
BrechtDeMan@873: 	
BrechtDeMan@873: 	var loopPlayback = audioHolderObject.loop;
BrechtDeMan@873: 
BrechtDeMan@873: 	audioEngineContext.loopPlayback = loopPlayback;
BrechtDeMan@873: 	// Create AudioEngine bindings for playback
BrechtDeMan@873: 	audioEngineContext.selectedTrack = function(id) {
BrechtDeMan@873: 		console.log('Deprecated');
BrechtDeMan@873: 	};
BrechtDeMan@873: 	
BrechtDeMan@873: 	currentTestHolder = document.createElement('audioHolder');
BrechtDeMan@873: 	currentTestHolder.id = audioHolderObject.id;
BrechtDeMan@873: 	currentTestHolder.repeatCount = audioHolderObject.repeatCount;
BrechtDeMan@873: 	
BrechtDeMan@873: 	var randomise = audioHolderObject.randomiseOrder;
BrechtDeMan@873: 	
BrechtDeMan@873: 	var audioElements = audioHolderObject.audioElements;
BrechtDeMan@873: 	currentTrackOrder = [];
BrechtDeMan@873: 	if (randomise) {
BrechtDeMan@873: 		audioHolderObject.audioElements = randomiseOrder(audioHolderObject.audioElements);
BrechtDeMan@873: 	}
BrechtDeMan@873: 	
BrechtDeMan@873: 	// Delete any previous audioObjects associated with the audioEngine
BrechtDeMan@873: 	audioEngineContext.audioObjects = [];
BrechtDeMan@873: 	interfaceContext.deleteCommentBoxes();
nicholas@872: 	interfaceContext.deleteCommentQuestions();
BrechtDeMan@873: 	
BrechtDeMan@873: 	// Find all the audioElements from the audioHolder
BrechtDeMan@873: 	$(audioHolderObject.audioElements).each(function(index,element){
BrechtDeMan@873: 		// Find URL of track
BrechtDeMan@873: 		// In this jQuery loop, variable 'this' holds the current audioElement.
BrechtDeMan@873: 		
BrechtDeMan@873: 		// Now load each audio sample. First create the new track by passing the full URL
BrechtDeMan@873: 		var trackURL = audioHolderObject.hostURL + element.url;
BrechtDeMan@873: 		var audioObject = audioEngineContext.newTrack(element);
BrechtDeMan@873: 		
BrechtDeMan@873: 		var node = interfaceContext.createCommentBox(audioObject);
BrechtDeMan@873: 		
BrechtDeMan@873: 		// Create a slider per track
BrechtDeMan@873: 		audioObject.interfaceDOM = new sliderObject(audioObject);
BrechtDeMan@873: 		
BrechtDeMan@873: 		// Distribute it randomnly
BrechtDeMan@873: 		var w = window.innerWidth - (offset+8)*2;
BrechtDeMan@873: 		w = Math.random()*w;
BrechtDeMan@873: 		w = Math.floor(w+(offset+8));
BrechtDeMan@873: 		audioObject.interfaceDOM.trackSliderObj.style.left = w+'px';
BrechtDeMan@873: 		
BrechtDeMan@873: 		canvas.appendChild(audioObject.interfaceDOM.trackSliderObj);
BrechtDeMan@873: 		audioObject.metric.initialised(convSliderPosToRate(audioObject.interfaceDOM.trackSliderObj));
BrechtDeMan@873:         
BrechtDeMan@873: 	});
BrechtDeMan@873: 	if (commentShow) {
BrechtDeMan@873: 		interfaceContext.showCommentBoxes(feedbackHolder,true);
BrechtDeMan@873: 	}
BrechtDeMan@873: 	
BrechtDeMan@873: 	$(audioHolderObject.commentQuestions).each(function(index,element) {
BrechtDeMan@873: 		var node = interfaceContext.createCommentQuestion(element);
BrechtDeMan@873: 		feedbackHolder.appendChild(node.holder);
BrechtDeMan@873: 	});
BrechtDeMan@873: 	
BrechtDeMan@873: 	
BrechtDeMan@873: 	testWaitIndicator();
BrechtDeMan@873: }
BrechtDeMan@873: 
BrechtDeMan@873: function sliderObject(audioObject) {
BrechtDeMan@873: 	// Create a new slider object;
BrechtDeMan@873: 	this.parent = audioObject;
BrechtDeMan@873: 	this.trackSliderObj = document.createElement('div');
BrechtDeMan@873: 	this.trackSliderObj.className = 'track-slider';
BrechtDeMan@873: 	this.trackSliderObj.id = 'track-slider-'+audioObject.id;
BrechtDeMan@873: 
BrechtDeMan@873: 	this.trackSliderObj.setAttribute('trackIndex',audioObject.id);
BrechtDeMan@873: 	this.trackSliderObj.innerHTML = '<span>'+audioObject.id+'</span>';
BrechtDeMan@873: 	this.trackSliderObj.draggable = true;
BrechtDeMan@873: 	this.trackSliderObj.ondragend = dragEnd;
BrechtDeMan@873: 
BrechtDeMan@873: 	// Onclick, switch playback to that track
BrechtDeMan@873: 	this.trackSliderObj.onclick = function() {
BrechtDeMan@873: 		// Start the test on first click, that way timings are more accurate.
BrechtDeMan@873: 		audioEngineContext.play();
BrechtDeMan@873: 		if (audioEngineContext.audioObjectsReady) {
BrechtDeMan@873: 			// Cannot continue to issue play command until audioObjects reported as ready!
BrechtDeMan@873: 			// Get the track ID from the object ID
BrechtDeMan@873: 			var element;
BrechtDeMan@873: 			if (event.srcElement.nodeName == "SPAN") {
BrechtDeMan@873: 				element = event.srcElement.parentNode;
BrechtDeMan@873: 			} else {
BrechtDeMan@873: 				element = event.srcElement;
BrechtDeMan@873: 			}
BrechtDeMan@873: 			var id = Number(element.attributes['trackIndex'].value);
BrechtDeMan@873: 			//audioEngineContext.metric.sliderPlayed(id);
BrechtDeMan@873: 			audioEngineContext.play(id);
BrechtDeMan@873:             // Currently playing track red, rest green
BrechtDeMan@873:             
BrechtDeMan@873:             //document.getElementById('track-slider-'+index).style.backgroundColor = "#FF0000";
BrechtDeMan@873:             $('.track-slider').removeClass('track-slider-playing');
BrechtDeMan@873:             $(element).addClass('track-slider-playing');
BrechtDeMan@873:             $('.comment-div').removeClass('comment-box-playing');
BrechtDeMan@873:             $('#comment-div-'+id).addClass('comment-box-playing');
BrechtDeMan@873: 		}
BrechtDeMan@873: 	};
BrechtDeMan@873: 	
BrechtDeMan@873: 	this.exportXMLDOM = function(audioObject) {
BrechtDeMan@873: 		// Called by the audioObject holding this element. Must be present
BrechtDeMan@873: 		var node = document.createElement('value');
BrechtDeMan@873: 		node.textContent = convSliderPosToRate(this.trackSliderObj);
BrechtDeMan@873: 		return node;
BrechtDeMan@873: 	};
BrechtDeMan@873: 	this.getValue = function() {
BrechtDeMan@873: 		return convSliderPosToRate(this.trackSliderObj);
BrechtDeMan@873: 	};
BrechtDeMan@873: }
BrechtDeMan@873: 
BrechtDeMan@873: function dragEnd(ev) {
BrechtDeMan@873: 	// Function call when a div has been dropped
BrechtDeMan@873: 	var slider = document.getElementById('slider');
BrechtDeMan@873: 	var marginSize = Number(slider.attributes['marginsize'].value);
BrechtDeMan@873: 	var w = slider.style.width;
BrechtDeMan@873: 	w = Number(w.substr(0,w.length-2));
BrechtDeMan@873: 	var x = ev.x;
BrechtDeMan@873: 	if (x >= marginSize && x < w+marginSize) {
BrechtDeMan@873: 		this.style.left = (x)+'px';
BrechtDeMan@873: 	} else {
BrechtDeMan@873: 		if (x<marginSize) {
BrechtDeMan@873: 			this.style.left = marginSize+'px';
BrechtDeMan@873: 		} else {
BrechtDeMan@873: 			this.style.left = (w+marginSize) + 'px';
BrechtDeMan@873: 		}
BrechtDeMan@873: 	}
BrechtDeMan@873: 	var time = audioEngineContext.timer.getTestTime();
BrechtDeMan@873: 	var id = Number(ev.srcElement.getAttribute('trackindex'));
BrechtDeMan@873: 	audioEngineContext.audioObjects[id].metric.moved(time,convSliderPosToRate(ev.srcElement));
BrechtDeMan@873: }
BrechtDeMan@873: 
BrechtDeMan@873: function buttonSubmitClick() // TODO: Only when all songs have been played!
BrechtDeMan@873: {
BrechtDeMan@873: 	var checks = specification.commonInterface.options;
BrechtDeMan@873: 	var canContinue = true;
BrechtDeMan@873: 	
BrechtDeMan@873: 	// Check that the anchor and reference objects are correctly placed
BrechtDeMan@873: 	var audioObjs = audioEngineContext.audioObjects;
BrechtDeMan@873: 	var audioHolder = testState.stateMap[testState.stateIndex];
BrechtDeMan@873: 	var anchorId = null;
BrechtDeMan@873: 	var referenceId = null;
BrechtDeMan@873: 	for (var i=0; i<audioObjs.length; i++) {
BrechtDeMan@873: 		if (audioObjs[i].specification.anchor == true && anchorId == null) {anchorId = i;}
BrechtDeMan@873: 		if (audioObjs[i].specification.reference == true && referenceId == null) {referenceId = i;}
BrechtDeMan@873: 	}
BrechtDeMan@873: 	if (anchorId != null) {
BrechtDeMan@873: 		if (audioObjs[anchorId].specification.marker != null) {
BrechtDeMan@873: 			if (audioObjs[anchorId].interfaceDOM.getValue() > audioObjs[anchorId].specification.marker)
BrechtDeMan@873: 			{
BrechtDeMan@873: 				// Anchor is not set below
BrechtDeMan@873: 				console.log('Anchor node not below marker value');
BrechtDeMan@873: 				alert('Please keep listening');
BrechtDeMan@873: 				return;
BrechtDeMan@873: 			}
BrechtDeMan@873: 		} else {
BrechtDeMan@873: 			// No marker value given, ensure it is the minimum value
BrechtDeMan@873: 			var anchorVal = audioObjs[anchorId].interfaceDOM.getValue();
BrechtDeMan@873: 			for (var i=0; i<audioObjs.length; i++) {
BrechtDeMan@873: 				if (i != anchorId) {
BrechtDeMan@873: 					if (anchorVal > audioObjs[i].interfaceDOM.getValue()) {
BrechtDeMan@873: 						// Anchor not the minimum
BrechtDeMan@873: 						console.log('No marker set, anchor node not the minimum');
BrechtDeMan@873: 						alert('Please keep listening');
BrechtDeMan@873: 						return;
BrechtDeMan@873: 					}
BrechtDeMan@873: 				}
BrechtDeMan@873: 			}
BrechtDeMan@873: 		}
BrechtDeMan@873: 	}
BrechtDeMan@873: 	if (referenceId != null) {
BrechtDeMan@873: 		if (audioObjs[referenceId].specification.marker != null) {
BrechtDeMan@873: 			if (audioObjs[referenceId].interfaceDOM.getValue() < audioObjs[referenceId].specification.marker)
BrechtDeMan@873: 			{
BrechtDeMan@873: 				// Anchor is not set below
BrechtDeMan@873: 				console.log('Reference node not above marker value');
BrechtDeMan@873: 				alert('Please keep listening');
BrechtDeMan@873: 				return;
BrechtDeMan@873: 			}
BrechtDeMan@873: 		} else {
BrechtDeMan@873: 			// No marker value given, ensure it is the minimum value
BrechtDeMan@873: 			var referenceVal = audioObjs[referenceId].interfaceDOM.getValue();
BrechtDeMan@873: 			for (var i=0; i<audioObjs.length; i++) {
BrechtDeMan@873: 				if (i != referenceId) {
BrechtDeMan@873: 					if (referenceVal > audioObjs[i].interfaceDOM.getValue()) {
BrechtDeMan@873: 						// Anchor not the minimum
BrechtDeMan@873: 						console.log('No marker set, reference node not the maximum');
BrechtDeMan@873: 						alert('Please keep listening');
BrechtDeMan@873: 						return;
BrechtDeMan@873: 					}
BrechtDeMan@873: 				}
BrechtDeMan@873: 			}
BrechtDeMan@873: 		}
BrechtDeMan@873: 	}
BrechtDeMan@873: 	
BrechtDeMan@873: 	for (var i=0; i<checks.length; i++) {
BrechtDeMan@873: 		if (checks[i].type == 'check')
BrechtDeMan@873: 		{
BrechtDeMan@873: 			switch(checks[i].check) {
BrechtDeMan@873: 			case 'fragmentPlayed':
BrechtDeMan@873: 				// Check if all fragments have been played
BrechtDeMan@873: 				var checkState = interfaceContext.checkAllPlayed();
BrechtDeMan@873: 				if (checkState == false) {canContinue = false;}
BrechtDeMan@873: 				break;
BrechtDeMan@873: 			case  'fragmentFullPlayback':
BrechtDeMan@873: 				// Check all fragments have been played to their full length
BrechtDeMan@873: 				var checkState = interfaceContext.checkAllPlayed();
BrechtDeMan@873: 				if (checkState == false) {canContinue = false;}
BrechtDeMan@873: 				console.log('NOTE: fragmentFullPlayback not currently implemented, performing check fragmentPlayed instead');
BrechtDeMan@873: 				break;
BrechtDeMan@873: 			case 'fragmentMoved':
BrechtDeMan@873: 				// Check all fragment sliders have been moved.
BrechtDeMan@873: 				var checkState = interfaceContext.checkAllMoved();
BrechtDeMan@873: 				if (checkState == false) {canContinue = false;}
BrechtDeMan@873: 				break;
BrechtDeMan@873: 			case 'fragmentComments':
BrechtDeMan@873: 				// Check all fragment sliders have been moved.
BrechtDeMan@873: 				var checkState = interfaceContext.checkAllCommented();
BrechtDeMan@873: 				if (checkState == false) {canContinue = false;}
BrechtDeMan@873: 				break;
BrechtDeMan@873: 			}
BrechtDeMan@873: 
BrechtDeMan@873: 		}
BrechtDeMan@873: 	}
BrechtDeMan@873:    
BrechtDeMan@873:     if (canContinue) {
BrechtDeMan@873: 	    if (audioEngineContext.status == 1) {
BrechtDeMan@873: 	        var playback = document.getElementById('playback-button');
BrechtDeMan@873: 	        playback.click();
BrechtDeMan@873: 	    // This function is called when the submit button is clicked. Will check for any further tests to perform, or any post-test options
BrechtDeMan@873: 	    } else
BrechtDeMan@873: 	    {
BrechtDeMan@873: 	        if (audioEngineContext.timer.testStarted == false)
BrechtDeMan@873: 	        {
BrechtDeMan@873: 	            alert('You have not started the test! Please press start to begin the test!');
BrechtDeMan@873: 	            return;
BrechtDeMan@873: 	        }
BrechtDeMan@873: 	    }
BrechtDeMan@873: 	    testState.advanceState();
BrechtDeMan@873:     } 
BrechtDeMan@873: }
BrechtDeMan@873: 
BrechtDeMan@873: function convSliderPosToRate(slider)
BrechtDeMan@873: {
BrechtDeMan@873: 	var w = document.getElementById('slider').style.width;
BrechtDeMan@873: 	var marginsize = Number(document.getElementById('slider').attributes['marginsize'].value);
BrechtDeMan@873: 	var maxPix = w.substr(0,w.length-2);
BrechtDeMan@873: 	var pix = slider.style.left;
BrechtDeMan@873: 	pix = pix.substr(0,pix.length-2);
BrechtDeMan@873: 	var rate = (pix-marginsize)/maxPix;
BrechtDeMan@873: 	return rate;
BrechtDeMan@873: }
BrechtDeMan@873: 
BrechtDeMan@873: function resizeWindow(event){
BrechtDeMan@873: 	// Function called when the window has been resized.
BrechtDeMan@873: 	// MANDATORY FUNCTION
BrechtDeMan@873: 	
BrechtDeMan@873: 	// Store the slider marker values
BrechtDeMan@873: 	var holdValues = [];
BrechtDeMan@873: 	$(".track-slider").each(function(index,sliderObj){
BrechtDeMan@873: 		holdValues.push(convSliderPosToRate(index));
BrechtDeMan@873: 	});
BrechtDeMan@873: 	
BrechtDeMan@873: 	var width = event.target.innerWidth;
BrechtDeMan@873: 	var canvas = document.getElementById('sliderCanvasHolder');
BrechtDeMan@873: 	var sliderDiv = canvas.children[0];
BrechtDeMan@873: 	var sliderScaleDiv = canvas.children[1];
BrechtDeMan@873: 	var marginsize = Number(sliderDiv.attributes['marginsize'].value);
BrechtDeMan@873: 	var w = (marginsize+8)*2;
BrechtDeMan@873: 	sliderDiv.style.width = width - w + 'px';
BrechtDeMan@873: 	var width = width - w;
BrechtDeMan@873: 	// Move sliders into new position
BrechtDeMan@873: 	$(".track-slider").each(function(index,sliderObj){
BrechtDeMan@873: 		var pos = holdValues[index];
BrechtDeMan@873: 		var pix = pos * width;
BrechtDeMan@873: 		sliderObj.style.left = pix+marginsize+'px';
BrechtDeMan@873: 	});
BrechtDeMan@873: 	
BrechtDeMan@873: 	// Move scale labels
BrechtDeMan@873: 	$(sliderScaleDiv.children).each(function(index,scaleObj){
BrechtDeMan@873: 		var position = Number(scaleObj.attributes['value'].value);
BrechtDeMan@873: 		var pixelPosition = (position*width)+marginsize;
BrechtDeMan@873: 		scaleObj.style.left = Math.floor((pixelPosition-($(scaleObj).width()/2)))+'px';
BrechtDeMan@873: 	});
BrechtDeMan@873: }
BrechtDeMan@873: 
BrechtDeMan@873: function pageXMLSave(store, testXML)
BrechtDeMan@873: {
BrechtDeMan@873: 	// Saves a specific test page
BrechtDeMan@873: 	var xmlDoc = store;
BrechtDeMan@873: 	// Check if any session wide metrics are enabled
BrechtDeMan@873: 	
BrechtDeMan@873: 	var commentShow = testXML.elementComments;
BrechtDeMan@873: 	
BrechtDeMan@873: 	var metric = document.createElement('metric');
BrechtDeMan@873: 	if (audioEngineContext.metric.enableTestTimer)
BrechtDeMan@873: 	{
BrechtDeMan@873: 		var testTime = document.createElement('metricResult');
BrechtDeMan@873: 		testTime.id = 'testTime';
BrechtDeMan@873: 		testTime.textContent = audioEngineContext.timer.testDuration;
BrechtDeMan@873: 		metric.appendChild(testTime);
BrechtDeMan@873: 	}
BrechtDeMan@873: 	xmlDoc.appendChild(metric);
BrechtDeMan@873: 	var audioObjects = audioEngineContext.audioObjects;
BrechtDeMan@873: 	for (var i=0; i<audioObjects.length; i++) 
BrechtDeMan@873: 	{
BrechtDeMan@873: 		var audioElement = audioEngineContext.audioObjects[i].exportXMLDOM();
BrechtDeMan@873: 		xmlDoc.appendChild(audioElement);
BrechtDeMan@873: 	}
BrechtDeMan@873: 	
BrechtDeMan@873: 	$(interfaceContext.commentQuestions).each(function(index,element){
BrechtDeMan@873: 		var node = element.exportXMLDOM();
BrechtDeMan@873: 		xmlDoc.appendChild(node);
BrechtDeMan@873: 	});
BrechtDeMan@873: 	store = xmlDoc;
BrechtDeMan@873: }