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Author: cpsievert

inst/htmlwidgets/plotly.js

@@ -289,6 +289,12 @@ HTMLWidgets.widget({
         );
       });
       graphDiv.on('plotly_selected', function(d) {
+        // If 'plotly_selected' has already been fired, and you click
+        // on the plot afterwards, this event fires `undefined`?!?
+        // That might be considered a plotly.js bug, but it doesn't make 
+        // sense for this input change to occur if `d` is falsy because,
+        // even in the empty selection case, `d` is truthy (an object),
+        // and the 'plotly_deselect' event will reset this input
         if (d) {
           Shiny.onInputChange(
             ".clientValue-plotly_selected-" + x.source,