SoM: Fixed unwanted autorefreshing bug.

go/src/infra/appengine/sheriff-o-matic/elements/som-app.html

 <link rel="import" href="/bower_components/polymer/polymer.html">
 <link rel="import" href="/bower_components/iron-ajax/iron-ajax.html">
 <link rel="import" href="/bower_components/iron-flex-layout/classes/iron-flex-layout.html">
 <link rel="import" href="/bower_components/iron-icons/hardware-icons.html">
 <link rel="import" href="/bower_components/iron-icon/iron-icon.html">
 <link rel="import" href="/bower_components/iron-icons/iron-icons.html">
 <link rel="import" href="/bower_components/iron-location/iron-location.html">
 <link rel="import" href="/bower_components/iron-pages/iron-pages.html">
 <link rel="import" href="/bower_components/neon-animation/animations/scale-up-animation.html">
 <link rel="import" href="/bower_components/neon-animation/animations/fade-out-animation.html">
@@ skipping 241 matching lines @@
           computed: '_computeHaveAlerts(_alerts)',
         },
         _hideWebkitNotice: {
           type: Boolean,
           computed: '_computeHideWebkitNotice(_tree)',
         },
         logoutUrl: String,
         _path: {
           type: String,
         },
+        _refreshEnabled: {
+          type: Boolean,
+          computed: '_computeRefreshEnabled(_selectedPage)',
+        },
         _refreshPosition: {
           type: Number,
           value: function() { return 0; },
         },
         _selectedPage: {
           type: String,
           computed: '_computeSelectedPage(_path)',
         },
         showInfraFailures: {
           type: Boolean,
@@ skipping 16 matching lines @@
         user: String,
       },
 
       created: function() {
         this.async(this._refreshAsync, refreshDelayMs);
       },
 
       ////////////////////// Refresh ///////////////////////////
 
       _refresh: function() {
+        if (!this._refreshEnabled) {
+          return;
+        }
         this._refreshPosition  = this.$.mainHeaderPanel.$.mainContainer.scrollTop;
         this.$.annotations.generateRequest();
         this._alertsGroupsChanged(this._alertsGroups);
       },
 
       _refreshAsync: function() {
         this._refresh();
         this.async(this._refreshAsync, refreshDelayMs);
       },
 
@@ skipping 14 matching lines @@
           return [];
         }
 
         if (trees && trees[tree] && trees[tree].alert_streams) {
           return trees[tree].alert_streams
         }
 
         return [tree];
       },
 
+      _computeRefreshEnabled: function(selectedPage) {
+        return selectedPage == "alertsList";
+      },
+
       _computeSelectedPage: function(path) {
         let pathParts = path.split('/');
         if (pathParts.length < 2) {
           console.error('error: pathParts < 2', pathParts);
         }
         if (pathParts.length < 3) {
           return 'alertsList';
         }
         if (pathParts[2] == 'examine') {
           return 'examineAlert';
@@ skipping 218 matching lines @@
           }
         ).completes.then(() => {
           this.$.snoozeTime.value = '';
         });
       },
 
     });
   })();
   </script>
 </dom-module>