GH-4558 Mobile View: Don't close the Left Hand Sidebar after removing an open Direct Message Channel (#4776)

* added fix

* use class var instead of state var

* removed onUpdate

webapp/components/sidebar.jsx

@@ -69,6 +69,7 @@ export default class Sidebar extends React.Component {
 
         this.isLeaving = new Map();
         this.isSwitchingChannel = false;
+        this.closedDirectChannel = false;
 
         const state = this.getStateFromStores();
         state.newChannelModalType = '';
@@ -161,9 +162,13 @@ export default class Sidebar extends React.Component {
 
         // close the LHS on mobile when you change channels
         if (this.state.activeId !== prevState.activeId) {
-            $('.app__body .inner-wrap').removeClass('move--right');
+            if (this.closedDirectChannel) {
-            $('.app__body .sidebar--left').removeClass('move--right');
+                this.closedDirectChannel = false;
-            $('.multi-teams .team-sidebar').removeClass('move--right');
+            } else {
+                $('.app__body .inner-wrap').removeClass('move--right');
+                $('.app__body .sidebar--left').removeClass('move--right');
+                $('.multi-teams .team-sidebar').removeClass('move--right');
+            }
         }
     }
 
@@ -349,6 +354,7 @@ export default class Sidebar extends React.Component {
         }
 
         if (channel.id === this.state.activeId) {
+            this.closedDirectChannel = true;
             browserHistory.push('/' + this.state.currentTeam.name + '/channels/town-square');
         }
     }