Merge pull request #40 from emanuel-braz/feature/webview_flutter

Add GenericMicroAppEventController in order to enable webview controllers

Author: emanuel-braz

CHANGELOG.md

@@ -1,3 +1,9 @@
+## 0.10.0
+[2022-07-21]
+
+#### Added
+- Add GenericMicroAppEventController in order to enable webview controllers
+
 ## 0.9.0
 [2022-07-10]
 

README.md

@@ -589,6 +589,9 @@ or
 MicroBoard().showBoard();
 ```
 
+### 🌐 Micro Web (Webview Controllers)
+Take a look at https://pub.dev/packages/fma_webview_flutter
+
 
 ### 📎 The following table shows how Dart values are received on the platform side and vice versa
 

example/app2/pubspec.lock

@@ -49,7 +49,7 @@ packages:
       name: dart_log
       url: "https://pub.dartlang.org"
     source: hosted
-    version: "1.1.1"
+    version: "1.2.0"
   equatable:
     dependency: transitive
     description:

example/example_host/android/build.gradle

@@ -1,5 +1,5 @@
 buildscript {
-    ext.kotlin_version = '1.3.50'
+    ext.kotlin_version = '1.6.10'
     repositories {
         google()
         mavenCentral()

example/example_host/lib/pages/material_app_page_initial.dart

@@ -21,9 +21,10 @@ class _MaterialAppPageInitialState extends State<MaterialAppPageInitial>
   @override
   void initState() {
     registerEventHandler<String>(MicroAppEventHandler<String>((event) {
+      String? message = event.cast();
       ScaffoldMessenger.of(context).removeCurrentSnackBar();
       ScaffoldMessenger.of(context).showSnackBar(SnackBar(
-        content: Text(event.cast()),
+        content: Text(message ?? 'Unknown'),
       ));
       event.resultSuccess(true);
     }, channels: const ['show_snackbar'], distinct: false));

example/example_host/pubspec.lock

@@ -56,7 +56,7 @@ packages:
       name: dart_log
       url: "https://pub.dartlang.org"
     source: hosted
-    version: "1.1.1"
+    version: "1.2.0"
   equatable:
     dependency: transitive
     description:

example/example_routes/pubspec.lock

@@ -49,7 +49,7 @@ packages:
       name: dart_log
       url: "https://pub.dartlang.org"
     source: hosted
-    version: "1.1.1"
+    version: "1.2.0"
   equatable:
     dependency: transitive
     description:

lib/flutter_micro_app.dart

@@ -1,5 +1,6 @@
 library flutter_micro_app;
 
+export 'src/controllers/app_event/generic_micro_app_event_controller.dart';
 export 'src/controllers/app_event/micro_app_event_controller.dart';
 export 'src/controllers/navigators/navigator_controller.dart';
 export 'src/controllers/navigators/navigator_event_controller.dart';

lib/src/controllers/app_event/generic_micro_app_event_controller.dart

@@ -0,0 +1,35 @@
+import 'package:flutter/foundation.dart';
+
+import '../../../flutter_micro_app.dart';
+
+abstract class GenericMicroAppEventController {
+  /// methodChannel
+  final String? methodChannel;
+
+  /// name
+  String? name;
+
+  /// description
+  String? description;
+
+  /// parentName
+  String? parentName;
+
+  late final MicroAppEventController _microAppEventController;
+  GenericMicroAppEventController(
+      {this.methodChannel, MicroAppEventController? eventController})
+      : _microAppEventController =
+            eventController ?? MicroAppEventController.instance;
+
+  /// When recieve event
+  @mustCallSuper
+  void onEvent(MicroAppEvent? event) {
+    if (event != null) _microAppEventController.emit(event);
+  }
+
+  /// emit events
+  Future<Object?> emit(Object event, {Duration? timeout});
+
+  /// dispose controller
+  void dispose();
+}

lib/src/controllers/app_event/micro_app_event_controller.dart

@@ -3,6 +3,7 @@ import 'dart:async';
 
 import 'package:flutter/foundation.dart';
 import 'package:flutter/services.dart';
+import 'package:flutter_micro_app/dependencies.dart';
 import 'package:flutter_micro_app/flutter_micro_app.dart';
 import 'package:flutter_micro_app/src/services/native_service.dart';
 
@@ -17,6 +18,9 @@ class MicroAppEventController {
       StreamController.broadcast();
   late MicroAppNativeService _microAppNativeService;
   late MicroAppEventDelegate _handlerRegisterDelegate;
+  final Map<String, GenericMicroAppEventController> _webviewControllers = {};
+  Map<String, GenericMicroAppEventController> get webviewControllers =>
+      _webviewControllers;
 
   /// Used to listen all micro app events
   MicroAppEventSubscription get onEvent => _controller.stream.listen;
@@ -45,6 +49,16 @@ class MicroAppEventController {
       MicroAppEventAdapter adapter = MicroAppEventJsonAdapter();
       final event = adapter.parse(call);
       _controller.add(event);
+
+      try {
+        // It dispatchs event to all webviews
+        for (var webviewController in _webviewControllers.values) {
+          webviewController.emit(event);
+        }
+      } catch (e) {
+        logger.e('An error occurred while dispatching events to webviews',
+            error: e);
+      }
     });
   }
 
@@ -57,6 +71,7 @@ class MicroAppEventController {
   List<Future> emit<T>(MicroAppEvent<T> event, {Duration? timeout}) {
     final futures = <Future>[];
 
+    // Native mobile events
     if (MicroAppPreferences.config.nativeEventsEnabled) {
       final nativeFuture = _microAppNativeService.emit(
           Constants.methodMicroAppEvent, event.toMap());
@@ -67,6 +82,13 @@ class MicroAppEventController {
       }
     }
 
+    // Webview events
+    for (var webviewController in _webviewControllers.values) {
+      final webFuture = webviewController.emit(event, timeout: timeout);
+      futures.add(webFuture);
+    }
+
+    // Flutter events
     _controller.add(event);
     if (timeout == null) {
       futures.add(event.asFuture);
@@ -122,4 +144,22 @@ class MicroAppEventController {
   void dispose() {
     _controller.close();
   }
+
+  /// registerWebviewController
+  GenericMicroAppEventController registerWebviewController(
+      {required String id,
+      required GenericMicroAppEventController controller}) {
+    return _webviewControllers[id] = controller;
+  }
+
+  /// unregisterWebviewController
+  GenericMicroAppEventController? unregisterWebviewController(
+      {required String id}) {
+    final controller = _webviewControllers.remove(id);
+    if (controller != null) {
+      controller.dispose();
+      return controller;
+    }
+    return null;
+  }
 }