iruby compatibility finished

lib/plotrb.rb

@@ -23,3 +23,21 @@ class Object
   include ::Plotrb::Kernel
 
 end
+
+if defined? IRuby
+  IRuby.display(IRuby.javascript(%{
+    require.config({paths: {
+       d3: 'http://d3js.org/d3.v3.min',
+       d3_geo: 'http://trifacta.github.io/vega/lib/d3.geo.projection.min',
+       topojson: 'http://trifacta.github.io/vega/lib/topojson',
+       vg: 'http://trifacta.github.io/vega/vega.min'
+    }});
+    require(['d3', 'vg', 'd3_geo', 'topojson'], function(d3, vg, d3_geo, topojson) {
+        window.d3 = d3;
+        window.vg = vg;
+        var event = document.createEvent('HTMLEvents');
+        event.initEvent('load_plotrb',false,false);
+        window.dispatchEvent(event);
+    });
+}))
+end

lib/plotrb/visualization.rb

@@ -44,6 +44,27 @@ def generate_spec(format=nil)
       end
     end
 
+    def to_iruby
+      ['text/html', %{
+<div id='vis-#{name}'></div>
+<script type='text/javascript'>
+  $(function() {
+    function render() {
+      vg.parse.spec(#{generate_spec}, function(chart) { view = chart({el:'#vis-#{name}'}).update(); });
+    }
+    if (typeof window.vg === 'undefined') {
+      window.addEventListener('load_plotrb', render, false);
+    } else {
+      render();
+    }
+ });
+</script>}]
+    end
+
+    def show
+      IRuby.display(self)
+    end
+
   private
 
     def attribute_post_processing