knowledgeUI/labeledgraph.html at master · robbizorg/knowledgeUI · GitHub

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<!DOCTYPE html>
<meta charset="utf-8">
<style>

.link {
  stroke: #ccc;
}

.node circle {
    fill: #ccc;
    stroke: #fff;
    stroke-width: 1px;
}

.node text {
  pointer-events: none;
  font: 10px sans-serif;
  color: black;
}

</style>
<body>
<div style="position: absolute;">
  Name:<br>
  <input id="name" type="text" name="name"><br>
  Connections:<br>
  <input id="connections" type="text" name="connections">
  <button onClick="addNode()">Add Node</button>
</div>
<script src="http://d3js.org/d3.v3.min.js"></script>
<script>

var graph = {
  "nodes": [
    {"name": "Data Structures", "group": 1},
    {"name": "Algorithms"},
    {"name": "Lists"},
    {"name": "Sorting"},
    {"name": "ArrayList"},
    {"name": "LinkedList"},
    {"name": "Array"}
  ],
  "links": [
    {"source":0,"target":1,"value":1},
    {"source":2,"target":0,"value":1},
    {"source":3,"target":1,"value":1},
    {"source":4,"target":2,"value":1},
    {"source":5,"target":2,"value":1},
    {"source":6,"target":2,"value":1}
  ]
};


var width = 960,
    height = 500

var svg = d3.select("body").append("svg")
    .attr("width", width)
    .attr("height", height);

var force = d3.layout.force()
    .gravity(0.05)
    .distance(100)
    .charge(-100)
    .size([width, height]);

  force
      .nodes(graph.nodes)
      .links(graph.links)
      .start();

  var link = svg.selectAll(".link")
      .data(graph.links)
    .enter().append("line")
      .attr("class", "link");

  var node = svg.selectAll(".node")
      .data(graph.nodes)
    .enter().append("g")
      .attr("class", "node")
      .call(force.drag);

  node.append("circle")
    .attr('r', width/100);

  node.append("text")
      .attr("dx", 12)
      .attr("dy", ".35em")
      .text(function(d) { return d.name });

  force.on("tick", function() {
    link.attr("x1", function(d) { return d.source.x; })
        .attr("y1", function(d) { return d.source.y; })
        .attr("x2", function(d) { return d.target.x; })
        .attr("y2", function(d) { return d.target.y; });

    node.attr("transform", function(d) { return "translate(" + d.x + "," + d.y + ")"; });
  });

function addNode() {
  var newNode = document.getElementById("name").value;
  console.log(newNode);
  //var connections = document.getElementById("connections").split(",");

  graph.nodes[graph.nodes.length] = {"name": newNode};
  console.log(graph.nodes);

  force
      .nodes(graph.nodes)
      .links(graph.links)
      .start();


  var node = svg.selectAll(".node")
      .data(graph.nodes)
    .enter().append("g")
      .attr("class", "node")
      .call(force.drag);

  node.append("circle")
    .attr('r', width/100);

  node.append("text")
      .attr("dx", 12)
      .attr("dy", ".35em")
      .text(function(d) { return d.name });
}
</script>