Treemap for node text testing

This is a test for attaching hyperlinks to nodes/node text for a collapsible tree.

Built with blockbuilder.org

<!DOCTYPE html>
<meta charset="utf-8">
<style>
#tree-container {
	position: absolute;
	left: 0px;
	width: 100%;
}

.svgContainer {
	display: block;
    margin: auto;
}

.node, .clickable {
  cursor: pointer;
}

.node-rect {
}

.node-rect-closed {
	stroke-width: 2px;
	stroke: rgb(0,0,0);
}

.link {
	fill: none;
	stroke: lightsteelblue;
	stroke-width: 2px;
}

.linkselected {
	fill: none;
	stroke: tomato;
	stroke-width: 2px;
}

.arrow {
	fill: lightsteelblue;
	stroke-width: 1px;
}

.arrowselected {
	fill: tomato;
	stroke-width: 2px;
}

.link text {
	font: 7px sans-serif;
	fill: #CC0000;
}

.wordwrap {
	white-space: pre-wrap; /* CSS3 */
	white-space: -moz-pre-wrap; /* Firefox */
	white-space: -pre-wrap; /* Opera <7 */
	white-space: -o-pre-wrap; /* Opera 7 */
	word-wrap: break-word; /* IE */
}

.node-text {
	font: 7px sans-serif;
	color: white;
}

.tooltip-text-container {
    height: 100%;
	width: 100%;
}

.tooltip-text {
	visibility: hidden;
	font: 7px sans-serif;
	color: white;
	display: block;
 	padding: 5px;
}

.tooltip-box {
	background: rgba(0, 0, 0, 0.7);
	visibility: hidden;
	position: absolute;
	border-style: solid;
    border-width: 1px;
    border-color: black;
    border-top-right-radius: 0.5em;
}

p {
	display: inline;
}

.textcolored {
	color: orange;
}

a.exchangeName {
	color: orange;
}
</style>
<body>
<script src="https://d3js.org/d3.v3.min.js" charset="utf-8"></script>
<script>
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://raw.githubusercontent.com/d3/d3-hierarchy/master/test/data/flare.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 + ")"; })
      ;
  nodeEnter.append("circle")
      .attr("r", 1e-6)
      .style("fill", function(d) { return d._children ? "lightsteelblue" : "#fff"; })
      .on("click", click)      
      ;
  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);
  nodeEnter
      .append("a")
         .attr("xlink:href", function (d) { return "https://www.example.com/flare/" + d.id; })
      .append("rect")
          .attr("class", "clickable")
          .attr("y", -6)
          .attr("x", function (d) { return d.children || d._children ? -60 : 10; })
          .attr("width", 50) //2*4.5)
          .attr("height", 12)
          .style("fill", "lightsteelblue")
          .style("fill-opacity", .3)        // set to 1e-6 to hide          
          ;
  // 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);
}
</script>

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