some changes in display options

lib/src/bloc/display_options_dialog_bloc.dart

@@ -26,6 +26,8 @@ import 'package:meta/meta.dart';
 
 import '../network/api.dart' as api;
 
+enum DisplayOptionsState { none, success, failure }
+
 @immutable
 abstract class SetDisplayTypeEvent extends Equatable {
   final String type;
@@ -49,11 +51,10 @@ class SetDisplayTypeShowEvent extends SetDisplayTypeEvent {
   SetDisplayTypeShowEvent() : super('show');
 }
 
-class DisplayOptionDialogBloc extends Bloc<SetDisplayTypeEvent, void> {
+class DisplayOptionsDialogBloc
+    extends Bloc<SetDisplayTypeEvent, DisplayOptionsState> {
   @override
-  void get initialState {
+  DisplayOptionsState get initialState => DisplayOptionsState.none;
-    return;
-  }
 
   void setBlankScreen() {
     dispatch(SetDisplayTypeBlankEvent());
@@ -72,7 +73,14 @@ class DisplayOptionDialogBloc extends Bloc<SetDisplayTypeEvent, void> {
   }
 
   @override
-  Stream<void> mapEventToState(SetDisplayTypeEvent event) async* {
+  Stream<DisplayOptionsState> mapEventToState(
-    api.setDisplayState(event.type);
+      SetDisplayTypeEvent event) async* {
+    try {
+      await api.setDisplayState(event.type);
+      yield DisplayOptionsState.success;
+    } catch (e) {
+      yield DisplayOptionsState.failure;
+    }
+    yield DisplayOptionsState.none;
   }
 }

lib/src/network/api.dart

@@ -55,84 +55,88 @@ Uri _uri(String path, {Map<String, String> queryParams}) {
   );
 }
 
-Future<http.Response> _get(String path,
+Future<String> _get(String path, {Map<String, String> queryParams}) {
-    {Map<String, String> queryParams}) async {
   Uri uri = _uri(path, queryParams: queryParams);
-  final response = await http.get(uri, headers: _headers());
+  return http.get(uri, headers: _headers()).then((response) {
-  return response;
+    if (response.statusCode == 200) {
-}
+      return response.body;
-
-Future<PollState> pollState() async {
-  final response = await _get('api/poll');
-  if (response.statusCode != 200) {
-    return null;
     }
-  final jsonResponse = convert.jsonDecode(response.body);
+    throw Exception('Invalid request.');
-  return PollState.fromJson(jsonResponse['results']);
-}
-
-Future<List<SearchResult>> search(Plugin plugin, String query) async {
-  final response = await _get('api/${plugin.id}/search', queryParams: {
-    'data': '{"request":{"text":"$query"}}',
   });
-  if (response.statusCode != 200) {
+  // final response = await http.get(uri, headers: _headers());
-    return [];
+  // return response;
-  }
-  final jsonResponse = convert.jsonDecode(response.body);
-  return (jsonResponse['results']['items'] as List)
-      .map((i) => SearchResult.fromJson(i))
-      .toList();
 }
 
-Future<void> projectItem(Plugin plugin, String itemId) async {
+// Future<PollState> pollState() async {
-  final response = await _get('api/${plugin.id}/live', queryParams: {
+//   final response = await _get('api/poll');
-    'data': '{"request": {"id": $itemId}}',
+//   if (response.statusCode != 200) {
+//     return null;
+//   }
+//   final jsonResponse = convert.jsonDecode(response.body);
+//   return PollState.fromJson(jsonResponse['results']);
+// }
+
+// Future<List<SearchResult>> search(Plugin plugin, String query) async {
+//   final response = await _get('api/${plugin.id}/search', queryParams: {
+//     'data': '{"request":{"text":"$query"}}',
+//   });
+//   if (response.statusCode != 200) {
+//     return [];
+//   }
+//   final jsonResponse = convert.jsonDecode(response.body);
+//   return (jsonResponse['results']['items'] as List)
+//       .map((i) => SearchResult.fromJson(i))
+//       .toList();
+// }
+
+// Future<void> projectItem(Plugin plugin, String itemId) async {
+//   final response = await _get('api/${plugin.id}/live', queryParams: {
+//     'data': '{"request": {"id": $itemId}}',
+//   });
+//   if (response.statusCode != 200) {
+//     // Do some stuff...
+//   }
+// }
+
+// Future<void> addItemToService(Plugin plugin, String itemId) async {
+//   final response = await _get('api/${plugin.id}/add', queryParams: {
+//     'data': '{"request": {"id": $itemId}}',
+//   });
+//   if (response.statusCode != 200) {
+//     // Do some stuff...
+//   }
+// }
+
+// Future<bool> alert(String text) async {
+//   final response = await _get('api/alert', queryParams: {
+//     'data': '{"request": {"text": "$text"}}',
+//   });
+//   if (response.statusCode != 200) {
+//     return false;
+//   }
+//   return true;
+// }
+
+Future<void> setDisplayState(String state) {
+  return _get('api/display/$state').then((_) {
+    return;
   });
-  if (response.statusCode != 200) {
-    // Do some stuff...
-  }
 }
 
-Future<void> addItemToService(Plugin plugin, String itemId) async {
+// Future<void> setServiceItem(int itemIndex) async {
-  final response = await _get('api/${plugin.id}/add', queryParams: {
+//   final response = await _get('api/service/set', queryParams: {
-    'data': '{"request": {"id": $itemId}}',
+//     'data': '{"request": {"id": $itemIndex}}',
-  });
+//   });
-  if (response.statusCode != 200) {
+//   if (response.statusCode != 200) {
-    // Do some stuff...
+//     // Do some stuff...
-  }
+//   }
-}
+// }
 
-Future<bool> alert(String text) async {
+// Future<void> setLiveSlide(int slideIndex) async {
-  final response = await _get('api/alert', queryParams: {
+//   final response = await _get('api/controller/live/set', queryParams: {
-    'data': '{"request": {"text": "$text"}}',
+//     'data': '{"request": {"id": $slideIndex}}',
-  });
+//   });
-  if (response.statusCode != 200) {
+//   if (response.statusCode != 200) {
-    return false;
+//     // Do some stuff...
-  }
+//   }
-  return true;
+// }
-}
-
-Future<void> setDisplayState(String state) async {
-  final response = await _get('api/display/$state');
-  if (response.statusCode != 200) {
-    // Do some stuff...
-  }
-}
-
-Future<void> setServiceItem(int itemIndex) async {
-  final response = await _get('api/service/set', queryParams: {
-    'data': '{"request": {"id": $itemIndex}}',
-  });
-  if (response.statusCode != 200) {
-    // Do some stuff...
-  }
-}
-
-Future<void> setLiveSlide(int slideIndex) async {
-  final response = await _get('api/controller/live/set', queryParams: {
-    'data': '{"request": {"id": $slideIndex}}',
-  });
-  if (response.statusCode != 200) {
-    // Do some stuff...
-  }
-}

lib/src/widgets/display_options_dialog.dart

@@ -21,13 +21,14 @@
 // DEALINGS IN THE SOFTWARE.
 
 import 'package:flutter/material.dart';
+import 'package:flutter_bloc/flutter_bloc.dart';
 
 import '../bloc/display_options_dialog_bloc.dart';
 import '../configurations/app_localizations.dart';
 
 class _Action {
   String titleKey;
-  Function(DisplayOptionDialogBloc) callback;
+  Function(DisplayOptionsDialogBloc) callback;
   _Action({@required this.titleKey, @required this.callback});
 }
 
@@ -61,8 +62,29 @@ class DisplayOptionsDialog extends StatelessWidget {
 
   @override
   Widget build(BuildContext context) {
-    final bloc = DisplayOptionDialogBloc();
+    final bloc = DisplayOptionsDialogBloc();
-    return SimpleDialog(
+    return BlocListener<DisplayOptionsDialogBloc, DisplayOptionsState>(
+      bloc: bloc,
+      condition: (previous, current) => current != DisplayOptionsState.none,
+      listener: (context, state) {
+        print(state);
+        switch (state) {
+          case DisplayOptionsState.success:
+            Scaffold.of(context).showSnackBar(SnackBar(
+              content: Text('Sucesso!'),
+            ));
+            break;
+          case DisplayOptionsState.failure:
+            Scaffold.of(context).showSnackBar(SnackBar(
+              content: Text('Falha!'),
+              backgroundColor: Colors.red,
+            ));
+            break;
+          default:
+            break;
+        }
+      },
+      child: SimpleDialog(
         contentPadding: EdgeInsets.all(20.0),
         children: _actions
             .map((action) => OutlineButton(
@@ -76,6 +98,7 @@ class DisplayOptionsDialog extends StatelessWidget {
                   },
                 ))
             .toList(),
+      ),
     );
   }
 }