Reuseable D3 MindMap (left/right tree)

Reuseable D3 MindMap

Trying to follow the paradigm setup in "Towards Reusable Charts" (http://bost.ocks.org/mike/chart/) and create a reuseable MindMap (left/right tree) type view.

Everything implemented, can override node's with custom nodes if you choose, add nodes to the graph, remove nodes from the graph, swap nodes around. Could be used to create a nice online bracket chart as well.

Thanks to Jason Davies for pointing out my typo on idx's scope.

<!DOCTYPE html>
<html>
  <head>
    <meta http-equiv="Content-Type" content="text/html;charset=utf-8"/>
    <script type="text/javascript" src="https://d3js.org/d3.v3.min.js"></script>
    <style type="text/css">
      .node circle {
        cursor: pointer;
        fill: #fff;
        stroke: steelblue;
        stroke-width: 1.5px;
      }

.node text {
        font-size: 11px;
      }

path.link {
        fill: none;
        stroke: #ccc;
        stroke-width: 1.5px;
      }
      
      .node.selected circle {
        fill: green;
      }
    </style>
  </head>
  <body>
    <div id="body">
      <div id="toolbar">
        <button onclick="pushTopToBottom(); return false;">Push top to bottom on right</button>
        <button onclick="addNodes(); return false;">Add Nodes</button>
        <button onclick="swapLeftRight(); return false;">Swap left and right</button>
        <button onclick="moveNode('left', 'right'); return false;">Move left to right</button>
        <button onclick="moveNode('right', 'left'); return false;">Move right to left</button>
      </div>
      <svg id="chart"></svg>
    </div>
    <script type="text/javascript" src="mindmap.js"></script>
    <script type="text/javascript">
      var getDims = function(){
        var w=window,d=document,e=d.documentElement,g=d.getElementsByTagName('body')[0],x=w.innerWidth||e.clientWidth||g.clientWidth,y=w.innerHeight||e.clientHeight||g.clientHeight;
        return {width: x, height: y};
      };
      var dims = getDims();
      var chart = MindMap()
        .width(dims.width)
        .height(dims.height-10)
        .text(function(d){
          return d.name || d.text;
        })
        .click(function(d){
          console.log(d._id);
          // Find previously selected, unselect
          d3.select(".selected").classed("selected", false);
          // Select current item
          d3.select(this).classed("selected", true);
        })
        ;
      
      var loadJSON = function(fileName){
        d3.json("/data/"+fileName, function(json) {
          var i=0, l=json.children.length;
          var root = json;
          
          json.left = [];
          json.right = [];
          for(; i<l; i++){
            if(i%2){
              json.left.push(json.children[i]);
              json.children[i].position = 'left';
            }else{
              json.right.push(json.children[i]);
              json.children[i].position = 'right';
            }
          }

update(root);
        });
      };
      
      var loadFreeMind = function(fileName){
        MindMap.loadFreeMind('data/'+fileName, function(err, data){
          update(data);
        });
      };
      
      var update = function(data){
        window.data = data;
        d3.select('#chart')
          .datum(data)
          .call(chart)
          ;
      };
        
      var pushTopToBottom = function(){
        if(data.right[0]){
          if(data.right[0].children){
            data.right[0].children.push(data.right[0].children.shift());
          }else{
            data.right.push(data.right.shift());
          }
        }
        chart.update();
      };
      
      var addNodes = function(){
        if(data.right){
          if(data.right[0]){
            (data.right[0].children = data.right[0].children || []).push({name: 'test', children: [{name: 'Foo'}, {name: 'Bar'}, {name: 'None'}]});
          }else{
            data.right.push({name: 'test', children: [{name: 'Foo'}, {name: 'Bar'}, {name: 'None'}]});
          }
        }else{
          data.right = [{name: 'test', children: [{name: 'Foo'}, {name: 'Bar'}, {name: 'None'}]}];
        }
        chart.update();
      };
      
      var swapLeftRight = function(){
        var tmp = data.left;
        data.left = data.right;
        data.right = tmp;
        chart.update();
      };
      
      var moveNode = function(from, to){
        var n = data[from].shift();
        if(n){
          data[to].push(n);
        }
        chart.update();
      };
      
      update({
        "name": "Root",
        "children": [
          {
            "name": "Branch 1",
            "children": [
              {"name": "Leaf 3"},
              {"name": "Leaf 4"}
            ]
          },
          {"name": "Branch 2"}
        ]
      });
    </script>
  </body>
</html>

Modified http://d3js.org/d3.v3.min.js to a secure url

https://d3js.org/d3.v3.min.js