/* Tuto : http://www.d3noob.org/2014/01/tree-diagrams-in-d3js_11.html */

​

​

var margin = {top: 20, right: 120, bottom: 20, left: 120},

    width = 960 - margin.right - margin.left,

    height = 800 - margin.top - margin.bottom;

var i = 0,

    duration = 750,

    root;

​

var tree = d3.layout.tree()

    .size([height, width]);

​

var diagonal = d3.svg.diagonal()

    .projection(function(d) { return [d.y, d.x]; });

​

var svg = d3.select("body").append("svg")

    .attr("width", width + margin.right + margin.left)

    .attr("height", height + margin.top + margin.bottom)

  .append("g")

    .attr("transform", "translate(" + margin.left + "," + margin.top + ")");

​

d3.json("https://dl.dropboxusercontent.com/u/18967337/temp/sortie.json", function(error, flare) {

  root = flare;

  root.x0 = height / 2;

  root.y0 = 0;

​

  function collapse(d) {

    if (d.children) {

      d._children = d.children;

      d._children.forEach(collapse);

      d.children = null;

    }

  }

​

  root.children.forEach(collapse);

  update(root);

});

​

d3.select(self.frameElement).style("height", "800px");

​

function update(source) {

​

  // Compute the new tree layout.

  var nodes = tree.nodes(root).reverse(),

      links = tree.links(nodes);

​

  // Normalize for fixed-depth.

  nodes.forEach(function(d) { d.y = d.depth * 180; });

​

  // Update the nodes…

  var node = svg.selectAll("g.node")

      .data(nodes, function(d) { return d.id || (d.id = ++i); });

​

  // Enter any new nodes at the parent's previous position.

  var nodeEnter = node.enter().append("g")

      .attr("class", "node")

      .attr("transform", function(d) { return "translate(" + source.y0 + "," + source.x0 + ")"; })

      .on("click", click);

​

  nodeEnter.append("circle")

      .attr("r", 1e-6)

      .style("fill", function(d) { return d._children ? "lightsteelblue" : "#fff"; });

​

  nodeEnter.append("text")

      .attr("x", function(d) { return d.children || d._children ? -10 : 10; })

      .attr("dy", ".35em")

      .attr("text-anchor", function(d) { return d.children || d._children ? "end" : "start"; })

      .text(function(d) { return d.name; })

      .style("fill-opacity", 1e-6);

​

  // Transition nodes to their new position.

  var nodeUpdate = node.transition()

      .duration(duration)

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

​

  nodeUpdate.select("circle")

      .attr("r", 4.5)

      .style("fill", function(d) { return d._children ? "lightsteelblue" : "#fff"; });

​

  nodeUpdate.select("text")

      .style("fill-opacity", 1);

​

  // Transition exiting nodes to the parent's new position.

  var nodeExit = node.exit().transition()

      .duration(duration)

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

      .remove();

​

  nodeExit.select("circle")

      .attr("r", 1e-6);

​

  nodeExit.select("text")

      .style("fill-opacity", 1e-6);

​

  // Update the links…

  var link = svg.selectAll("path.link")

      .data(links, function(d) { return d.target.id; });

​

  // Enter any new links at the parent's previous position.

  link.enter().insert("path", "g")

      .attr("class", "link")

      .attr("d", function(d) {

        var o = {x: source.x0, y: source.y0};

        return diagonal({source: o, target: o});

      });

​

  // Transition links to their new position.

  link.transition()

      .duration(duration)

      .attr("d", diagonal);

​

  // Transition exiting nodes to the parent's new position.

  link.exit().transition()

      .duration(duration)

      .attr("d", function(d) {

        var o = {x: source.x, y: source.y};

        return diagonal({source: o, target: o});

      })

      .remove();

​

  // Stash the old positions for transition.

  nodes.forEach(function(d) {

    d.x0 = d.x;

    d.y0 = d.y;

  });

}

​

// Toggle children on click.

function click(d) {

  if (d.children) {

    d._children = d.children;

    d.children = null;

  } else {

    d.children = d._children;

    d._children = null;

  }

  update(d);

}

​