Support renderValue within iframe

Author: Jeffrey Shen

inst/htmlwidgets/plotly.js

@@ -155,10 +155,15 @@ HTMLWidgets.widget({
       x.config.modeBarButtonsToRemove.push("sendDataToCloud");
     }
 
+    // if the object was passed in from another window, plotly will falsely think it isn't a "plain object"
+    // to get around this, we do a deep clone of the object
+    if (inIframe() && !isPlainObject(x))
+      x = $.extend(true, {}, x)
+
     // if no plot exists yet, create one with a particular configuration
     if (!instance.plotly) {
 
-      var plot = Plotly.plot(graphDiv, x);
+      var plot = Plotly.plot(graphDiv, {...x});
       instance.plotly = true;
       instance.autosize = x.layout.autosize || true;
       instance.width = x.layout.width;
@@ -832,6 +837,10 @@ function isPlainObject(obj) {
   );
 }
 
+function inIframe() {
+  return window && window.self !== window.top;
+}
+
 function subsetArrayAttrs(obj, indices) {
   var newObj = {};
   Object.keys(obj).forEach(function(k) {