D3 Examples - A new attempt to add templating to d3.js

A new attempt to add templating to d3.js

The HTMLTemplateElement is currently supported in Chrome, Firefox and Opera (15+) for now. See Eric Bidelman HTMLTemplateElement tuturial

I change the idea of use HTMLTemplateElement.content because is only supported by 3 browsers . I'm using HTMLElement.innerHTML to read the template content and DOMParser() to inject the result into the DOM. To hide the content of <template> (HTMLUnknownElement) on other browsers (Safari, IE, etc) I add a CSS rule with display:none. On browsers that support HTMLTemplateElement the <script> isn't fired when the browser parse the document, but is different on HTMLUnknownElements. If someone know how to break the script execution on HTMLUnknownElements please send me a tweet @baldpower

TODOs:

Support template compilation engines as Handlebars.js and Hogan.js.

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<!DOCTYPE html>
<html>
<head>
    <meta charset="UTF-8">
    <title>D3js Templating Test</title>
    <script src="https://d3js.org/d3.v2.min.js" type="text/javascript"></script>
    <script src="https://cdnjs.cloudflare.com/ajax/libs/mustache.js/0.7.2/mustache.min.js" type="text/javascript"></script>
    <script src="d3.selection.template.js" type="text/javascript"></script>
    <script type="text/javascript">
      window.onload = function () {
​
        var count = 0,
            w = 960,
            h = 520,
            body = d3.select('body'),
            vis = body.append('svg')
                      .attr('width', w)
                      .attr('height', h),
            nextData = function() {
              count += 1;
              return {
                  head: {
                    width: .7*Math.random()+.8 //.8 - 1.5
                  },
                  mouth: {
                    width: .8*Math.random()+.5, //.5 - 1.3
                    height: Math.random()+.5, //.5 - 1.5
                    drop: 15*Math.random()-5 //-5 - 10
                  },
                  nose: {
                    width: Math.random()+.5, //.5 - 1.5
                    height: Math.random()+.5, // .5 - 1.5
                    drop: 15*Math.random()-5 // -5 - 10
                  },
                  eye: {
                    width: .8*Math.random()+.5, //.5 - 1.3
                    height: 1.1*Math.random()+.4//.4 - 1.5
                  },
                  brow: {
                    lift: 10*Math.random() //0 - 10
                  },
                  x: w*(count%5+1)/5 - 85 ,
                  y: h*.95*Math.ceil(count/5)/4.9 - 51
              };
            },
            data = d3.range(25).map(function() {
                return nextData();
            });
​
        vis.selectAll('.head')
           .data(data)
           .enter()
           .append('g')
           .attr('class', 'head')
           .attr('transform',function(d) {
              return 'translate('+ d.x +' '+ d.y +')'
           })
           .callTemplate(Mustache.render, "#head");
​
      };
    </script>
    <style>
      .face {
        color: #000000;
        fill: #ffccaa;
        fill-opacity: 1;
        fill-rule: evenodd;
        stroke: #000000;
        stroke-width: 1.5;
        marker: none;
        visibility: visible;
        display: inline;
        overflow: visible;
        enable-background: accumulate;
      }
      .mouth {
        color: #000000;
        fill: #000000;
        fill-opacity: 1;
        fill-rule: evenodd;
        stroke: #000000;
        stroke-width: 1.5;
        stroke-linecap: butt;
        stroke-linejoin: miter;
        stroke-miterlimit: 4;
        stroke-opacity: 1;
        stroke-dashoffset: 0;
        marker: none;
        visibility: visible;
        display: inline;
        overflow: visible;
        enable-background: accumulate;
      }
      .rightbrow {
        color: #000000;
        fill: none;
        stroke: #000000;
        stroke-width: 1.5;
        stroke-linecap: butt;
        stroke-linejoin: miter;
        stroke-miterlimit: 4;
        stroke-opacity: 1;
        stroke-dasharray: none;
        stroke-dashoffset: 0;
        marker: none;
        visibility: visible;
        display: inline;
        overflow: visible;
        enable-background: accumulate;
      }
      .leftbrow {
        color: #000000;
        fill: none;
        stroke: #000000;
        stroke-width: 1.5;
        stroke-linecap: butt;
        stroke-linejoin: miter;
        stroke-miterlimit: 4;
        stroke-opacity: 1;
        stroke-dasharray: none;
        stroke-dashoffset: 0;
        marker: none;
        visibility: visible;
        display: inline;
        overflow: visible;
        enable-background: accumulate;
      }
      .righteye {
        color: #000000;
        fill: #000000;
        stroke: #000000;
        stroke-width: 1.5;
        stroke-linecap: butt;
        stroke-linejoin: miter;
        stroke-miterlimit: 4;
        stroke-opacity: 1;
        stroke-dashoffset: 0;
        marker: none;
        visibility: visible;
        display: inline;
        overflow: visible;
        enable-background: accumulate;
      }
      .lefteye {
        color: #000000;
        fill: #000000;
        stroke: #000000;
        stroke-width: 1.5;
        stroke-linecap: butt;
        stroke-linejoin: miter;
        stroke-miterlimit: 4;
        stroke-opacity: 1;
        stroke-dashoffset: 0;
        marker: none;
        visibility: visible;
        display: inline;
        overflow: visible;
        enable-background: accumulate;
      }
      .nose {
        color: #000000;
        fill: #ffccaa;
        fill-opacity: 1;
        fill-rule: evenodd;
        stroke: #000000;
        stroke-width: 1.5;
        stroke-linecap: butt;
        stroke-linejoin: miter;
        stroke-miterlimit: 4;
        stroke-opacity: 1;
        stroke-dasharray: none;
        stroke-dashoffset: 0;
        marker: none;
        visibility: visible;
        display: inline;
        overflow: visible;
        enable-background: accumulate;
      }      
    </style>
</head>
<body>
</body>
    <template id="head">
      <svg xmlns="https://www.w3.org/2000/svg"> <!-- The namespace must to be explicitly defined -->
        <path
          class="face"
          d="M 28.471261,-5.0558794 C 32.671841,22.243131 19.834631,49.162831 0.60952108,49.162831 -18.615599,49.162831 -27.684919,24.667631 -27.053699,-3.0332694 -26.458119,-29.170189 -25.961069,-47.588419 0.21246108,-48.936829 19.417701,-49.926249 24.103691,-33.440159 28.471261,-5.0558794 z"
          transform="scale({{head.width}} 1)">
        </path>
        <path
          class="mouth"
          d="m 15,0 c 0,3.7959 -4.91374,13.7461 -12.8383199,13.7461 -7.92458,0 -17.6233801,-10.3065 -15.8591001,-13.7461 1.0069201,-1.9631 7.9345201,0 15.8591001,0 7.9245799,0 12.8383199,-3.7959 12.8383199,0 z"
          transform="translate(0, {{mouth.drop}}) translate(0,17) scale({{mouth.width}} {{mouth.height}})">
        </path>
        <path
          class="rightbrow"
          d="m -18.009869,-17.276949 c 3.23815,-9.62232 14.5716901,-8.70591 14.5716901,-8.70591"
          transform="translate(0, -{{brow.lift}})">
        </path>
        <path
          class="leftbrow"
          d="m 20.443211,-18.868939 c -3.23815,-9.62232 -14.5716899,-8.70591 -14.5716899,-8.70591"
          transform="translate(0, -{{brow.lift}})">
        </path>
        <path
          class="righteye"
          d="m 2.3,0 c 0.90841,1.59522 -1.53169,3.13263 -4.07974,3.51899 -2.5480401,0.38635 -5.4168801,-0.16412 -5.1475501,-2.11987 0.25826,-1.87529 1.62394,-2.35301 4.1719801,-2.73937 2.54805,-0.38636 4.17038,-0.21373 5.05531,1.34025 z"
          transform="translate(-5,-18) scale({{eye.width}} {{eye.height}})">
        </path>
        <path
          class="lefteye"
          d="m 5.5,0 c 0.90841,1.59522 -1.53169,3.13263 -4.07974,3.51899 -2.5480399,0.38635 -5.4168799,-0.16412 -5.1475499,-2.11987 0.25826,-1.87529 1.62394,-2.35301 4.17198,-2.73937 2.5480499,-0.38636 4.1703899,-0.21373 5.0553099,1.34025 z"
          transform="translate(10,-18) scale({{eye.width}} {{eye.height}})">
        </path>
        <path
          class="nose"
          d="M -8.1253309,-1.8487371 C -3.740886,13.80696 10.948853,19.556588 10.177223,-2.5578614"
          transform="translate(0, {{nose.drop}}) scale({{nose.width}} {{nose.height}})">
        </path>
      <svg>
    </template>
</html>
    