Merge pull request #15203 from jsferrei/optimize_legend

Legend toggle should only trigger a re-render, not a refresh

public/app/core/services/keybindingSrv.ts

@@ -249,7 +249,7 @@ export class KeybindingSrv {
         if (panelInfo.panel.legend) {
           const panelRef = dashboard.getPanelById(dashboard.meta.focusPanelId);
           panelRef.legend.show = !panelRef.legend.show;
-          panelRef.refresh();
+          panelRef.render();
         }
       }
     });

public/app/plugins/panel/graph/module.ts

@@ -281,7 +281,7 @@ class GraphCtrl extends MetricsPanelCtrl {
 
   toggleLegend() {
     this.panel.legend.show = !this.panel.legend.show;
-    this.refresh();
+    this.render();
   }
 
   legendValuesOptionChanged() {

public/app/plugins/panel/graph/tab_legend.html

@@ -3,7 +3,7 @@
 		<h5 class="section-heading">Options</h5>
 		<gf-form-switch class="gf-form"
 			label="Show" label-class="width-7"
-			checked="ctrl.panel.legend.show" on-change="ctrl.refresh()">
+			checked="ctrl.panel.legend.show" on-change="ctrl.render()">
 		</gf-form-switch>
 		<gf-form-switch class="gf-form"
 			label="As Table" label-class="width-7"