Auto-hide conversations list when a conversation is selected

lib/ui/routes/main_route/main_route.dart

@@ -32,8 +32,8 @@ mixin MainController implements State<MainRoute> {
   void push(Widget w, {bool hideNavBar});
 
   /// Open a conversation
-  void openConversation(int convID);
+  void openConversation(int convID, {fullScreen: false});
 
   /// Start a call for a given conversation
   void startCall(int convID);
-}
+}

lib/ui/routes/main_route/smartphone_route.dart

@@ -52,8 +52,6 @@ class CurrPage {
       "\n}";
 }
 
-
-
 /// Private implementation of HomeController
 class _MainRouteState extends State<MainRoute> implements MainController {
   CurrPage get _currTab => history.last;
@@ -252,7 +250,7 @@ class _MainRouteState extends State<MainRoute> implements MainController {
   }
 
   @override
-  void openConversation(int convID) {
+  void openConversation(int convID, {fullScreen: false}) {
     _pushPage(CurrPage(
       BarCallbackActions.OPEN_CONVERSATION,
       args: {"convID": convID},

lib/ui/screens/conversations_list_screen.dart

@@ -19,9 +19,13 @@ import 'package:flutter/material.dart';
 
 class ConversationsListScreen extends StatefulWidget {
   final bool useSmallFAB;
+  final Function() onOpen;
 
-  const ConversationsListScreen({Key key, this.useSmallFAB = false})
-      : assert(useSmallFAB != null),
+  const ConversationsListScreen({
+    Key key,
+    this.useSmallFAB = false,
+    this.onOpen,
+  })  : assert(useSmallFAB != null),
         super(key: key);
 
   @override
@@ -107,6 +111,7 @@ class _ConversationScreenState extends SafeState<ConversationsListScreen> {
   /// Open a conversation
   void _openConversation(int conversationId) {
     MainController.of(context).openConversation(conversationId);
+    if (widget.onOpen != null) widget.onOpen();
   }
 
   /// Create a new conversation

lib/ui/widgets/tablet_mode/conversations/open_conversation_button_widget.dart

@@ -38,6 +38,9 @@ class _OpenConversationButtonState extends State<OpenConversationButton> {
       width: 300,
       height: 500,
       child: Card(
-        child: ConversationsListScreen(useSmallFAB: true),
+        child: ConversationsListScreen(
+          useSmallFAB: true,
+          onOpen: () => _setShowConversationsList(false),
+        ),
       ));
 }