Merge pull request #31 from railspulse/chart-initialize-event

Send echarts events to the document

Author: igorkasyanchuk

lib/rails_charts/base_chart.rb

@@ -60,6 +60,12 @@ def js_code
               option && chart.setOption(option);
 
               window.RailsCharts.charts["#{container_id}"] = chart;
+
+              chart.on('rendered', function() {
+                document.dispatchEvent(new CustomEvent('chart:rendered', {
+                  detail: { containerId: '#{container_id}' }
+                }));
+              });
             }
 
             function destroy_#{chart_id}(e) {