Hide empty entity profile panel when no metrics to display

When an entity has no line count, calls, imports, edges, or file
position data, hide the Entity Profile chart panel instead of
showing an empty rectangle.

Author: jonathanpopham

templates/_main.js

@@ -227,9 +227,16 @@ window.addEventListener("load", function() {
 
       var hasMetrics = metrics.length > 0;
       var hasEdges = edgeTypes.length > 0;
+      var hasFileBar = ep.sl > 0 && ep.el > 0;
+
+      if (!hasMetrics && !hasEdges && !hasFileBar) {
+        var epPanel = epChartEl.closest(".chart-panel, .entity-profile-panel");
+        if (epPanel) epPanel.style.display = "none";
+      }
+
       var metricsH = hasMetrics ? metrics.length * 32 + 8 : 0;
       var edgesH = hasEdges ? Math.max(edgeTypes.length * 22 + 40, 56) : 0;
-      var fileBarH = (ep.sl > 0 && ep.el > 0) ? 44 : 0;
+      var fileBarH = hasFileBar ? 44 : 0;
       var totalH = metricsH + edgesH + fileBarH + 4;
       if (totalH < 40) totalH = 40;