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Here you can Sed posuere consectetur est at lobortis. Donec ullamcorper nulla non metus auctor fringilla. Maecenas sed diam eget risus varius blandit sit amet non magna. Donec id elit non mi porta gravida at eget metus. Praesent commodo cursus magna, vel scelerisque nisl consectetur et.

            
              <head>
	<title>Preq Tracker</title>
	<meta name="viewport" content="width=device-width, initial-scale=1">
	<script src="../node_modules/plain-draggable/plain-draggable.min.js"></script>
	<script src="../node_modules/leader-line/leader-line.min.js"></script>
	<script src="js/script.js"></script>
	<link rel="stylesheet" type="text/css" href="css/style.css">
	<link rel="stylesheet" type="text/css" href="css/toolbar.css">	
</head>
<body>
	<div onclick="handleStageClick(event)" id="stage">
	<div id="prq">
	<h1 id="aych1">Prerequisite Tracker</h1>
		<form>
			<div class="radio-group">
				<input type="radio" id="option-drag" name="selector"><label for="option-drag">Drag</label><input type="radio" id="option-create" name="selector"><label for="option-create">Create</label><input type="radio" id="option-rename" name="selector"><label for="option-rename">Rename</label><input type="radio" id="option-join" name="selector"><label for="option-join">Join</label><input type="radio" id="option-delete" name="selector"><label for="option-delete">Delete</label>
			</div>
		</form>
	</div>
	</div>
</body>
            
          
!
            
              @import url("https://fonts.googleapis.com/css?family=Roboto");
body {
  background: #332f35;
  font-family: roboto;
}

#prq {
  padding-top: 0.67em;
}

h1, form {
  text-align: center;
  margin: 0px;
}

h1 {
  color: #9a929e;
}

input[type=radio] {
  position: absolute;
  visibility: hidden;
  display: none;
}

label {
  color: #9a929e;
  display: inline-block;
  cursor: pointer;
  font-weight: bold;
  padding: 5px 20px;
}

input[type=radio]:checked + label {
  color: #ccc8ce;
  background: #675f6b;
}

@media only screen and (min-width: 515px) {
  label + input[type=radio] + label {
    border-left: solid 3px #675f6b;
  }
}

.radio-group {
  border: solid 3px #675f6b;
  display: inline-block;
  margin: 20px;
  border-radius: 10px;
  overflow: hidden;
}

html, body {
    height: 100%;
    margin: 0px;
}

#stage {
	width: 100%;
	height: 100%;
	/*background-color: lightgray;*/
}

.course {
	color: #9a929e;
	border: 2px solid #675f6b;
	padding: 5px 10px;
	position: absolute;
	cursor: move;
}
            
          
!
            
              /*! PlainDraggable v2.5.12 (c) anseki https://anseki.github.io/plain-draggable/ */
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i,o,l,r,s,u,h,p,c,d;return(r=(l=t.createElementNS(b,"defs")).appendChild(t.createElementNS(b,"path"))).id=i=n+"-path",(u=(s=t.createElementNS(b,"text")).appendChild(t.createElementNS(b,"textPath"))).href.baseVal="#"+i,u.startOffset.baseVal.newValueSpecifiedUnits(SVGLength.SVG_LENGTHTYPE_PX,0),u.textContent=e,"boolean"!=typeof f&&(f="paintOrder"in s.style),a&&!f?(s.id=o=n+"-text",l.appendChild(s),(c=(h=t.createElementNS(b,"g")).appendChild(t.createElementNS(b,"use"))).href.baseVal="#"+o,(p=h.appendChild(t.createElementNS(b,"use"))).href.baseVal="#"+o,(d=c.style).strokeLinejoin="round",{elmPosition:s,elmPath:r,elmOffset:u,styleText:s.style,styleFill:p.style,styleStroke:d,styleShow:h.style,elmsAppend:[l,h]}):(d=s.style,a&&(d.strokeLinejoin="round",d.paintOrder="stroke"),{elmPosition:s,elmPath:r,elmOffset:u,styleText:d,styleFill:d,styleStroke:a?d:null,styleShow:d,elmsAppend:[l,s]})},initSvg:function(t,n){var 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n=t.props,a={};a[t.optionName]="",Ze(n,a)},remove:function(t){t.boundTargets.length&&(console.error("LeaderLineAttachment was not unbound by remove"),t.boundTargets.forEach(function(e){y.pathLabel.unbind(t,e)}))}}},Object.keys(y).forEach(function(e){Ye[e]=function(){return new S(y[e],Array.prototype.slice.call(arguments))}}),Ye.positionByWindowResize=!0,window.addEventListener("resize",O.add(function(){Ye.positionByWindowResize&&Object.keys(K).forEach(function(e){De(K[e],{position:!0})})}),!1),Ye}();




var points = {};

var lines = {};

var connection = [];

var next_point_id = 0; // next point id
var next_line_id = 0; // next line id

function handleStageClick(event) {
    if (document.getElementById('option-create').checked
    	&& !document.getElementById('prq').contains(event.target)) {
        createCourse(event.clientX, event.clientY-document.getElementById('prq').clientHeight);
    }
}

function createCourse(x, y) {
    var course = document.createElement('div');
    course.innerHTML = "New Course";
    course.id = next_point_id; next_point_id++;
    course.className = "course";
    course.style.visibility = "hidden";
    // course.style.transform = "translate("+x+"px, "+y+"px)";
    course.addEventListener('click', function() { handleCourseClick(course) });
    document.getElementById('stage').appendChild(course);

    var ele = document.getElementById(course.id);
    ele.style.transform = "translate("+(x-ele.clientWidth/2)+"px, "+(y-ele.clientHeight/2)+"px)";
    ele.style.visibility = "";

    points[course.id] = {object: new PlainDraggable(course, {
    	onDrag: () => {
    		if (document.getElementById('option-drag').checked) {
    			return true;
    		}
    		else {
    			return false;
    		}
    	}
    }), lines: []};
}

function handleCourseClick(course) {
	if (document.getElementById('option-rename').checked) {
		var new_title = prompt("Please enter a course title", course.innerHTML);
        if (new_title != null & new_title != '') {
            course.innerHTML = new_title;
        }
	}
	else if (document.getElementById('option-delete').checked) {
		lines_2_remove = [];

        for (var key in lines) {
            var line_id = key;
            if (lines[key].end == course.id) {                
                var idx = points[lines[key].start].lines.indexOf(parseInt(line_id));
                points[lines[key].start].lines.splice(idx, 1);
                point_update_lines(lines[key].start);
                lines_2_remove.push(line_id);
            }
            else if (lines[key].start == course.id) {
                var idx = points[lines[key].end].lines.indexOf(parseInt(line_id));
                points[lines[key].end].lines.splice(idx, 1);
                point_update_lines(lines[key].end);
                lines_2_remove.push(line_id);
            }
        }

        // console.log(lines_2_remove[0])
        for (var i in lines_2_remove) {
            var idx = lines_2_remove[i];
            lines[idx].object.remove();
            delete lines[idx];
        }

        course.remove();
        delete points[course.id];
	}
	else if (document.getElementById('option-join').checked) {
		if (connection.length == 0) {
            connection.push(course.id);
        }
        else if (connection[0] == course.id) {
        	connection.pop();
        }
        else {
            start_id = connection[0];
            end_id = course.id;

            connection = [];

            line_id = next_line_id; next_line_id++;

            lines[line_id] = {
                start: start_id,
                end: end_id,
                object: new LeaderLine(document.getElementById(start_id), document.getElementById(end_id))
            };

            points[start_id].lines.push(line_id);
            points[end_id].lines.push(line_id);

            point_update_lines(start_id);
            point_update_lines(end_id);
        }
	}
}

function point_update_lines(id) {
    points[id].object.onMove = function () {
        for (var i=0; i<points[id].lines.length; i++) {
            lines[points[id].lines[i]].object.position();
        }
    }
}

            
          
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