Add PaywallFooterView listeners

api_tester/lib/api_tests/purchases_ui_flutter_api_test.dart

@@ -75,4 +75,51 @@ class _PurchasesFlutterApiTest {
     );
   }
 
+  Widget _checkPaywallFooterView() {
+    return Scaffold(
+      body: Center(
+        child: PaywallFooterView(
+          contentCreator: (double bottomPadding) {
+            return Container();
+          },
+        ),
+      ),
+    );
+  }
+
+  Widget _checkPaywallFooterViewWithOffering(Offering offering) {
+    return Scaffold(
+      body: Center(
+        child: PaywallFooterView(
+          offering: offering,
+          contentCreator: (double bottomPadding) {
+            return Container();
+          },
+        ),
+      ),
+    );
+  }
+
+  Widget _checkPaywallFooterViewWithListeners(Offering offering) {
+    return Scaffold(
+      body: Center(
+        child: PaywallFooterView(
+          onPurchaseStarted: (Package rcPackage) {
+          },
+          onPurchaseCompleted:
+              (CustomerInfo customerInfo, StoreTransaction storeTransaction) {
+          },
+          onPurchaseError: (PurchasesError error) {
+          },
+          onRestoreCompleted: (CustomerInfo customerInfo) {
+          },
+          onRestoreError: (PurchasesError error) {
+          },
+          contentCreator: (double bottomPadding) {
+            return Container();
+          },
+        ),
+      ),
+    );
+  }
 }

purchases_ui_flutter/android/src/main/kotlin/com/revenuecat/purchases_ui_flutter/views/PaywallFooterView.kt

@@ -7,6 +7,7 @@ import android.view.Gravity
 import android.view.View
 import android.widget.FrameLayout
 import androidx.core.view.children
+import com.revenuecat.purchases.hybridcommon.ui.PaywallListenerWrapper
 import com.revenuecat.purchases.ui.revenuecatui.ExperimentalPreviewRevenueCatUIPurchasesAPI
 import com.revenuecat.purchases.ui.revenuecatui.views.PaywallFooterView as NativePaywallFooterView
 import io.flutter.plugin.common.BinaryMessenger
@@ -32,7 +33,7 @@ internal class PaywallFooterView(
     override fun dispose() {}
 
     init {
-        methodChannel = MethodChannel(messenger, "purchases_ui_flutter/PaywallFooterView/${id}")
+        methodChannel = MethodChannel(messenger, "com.revenuecat.purchasesui/PaywallFooterView/${id}")
         val offeringIdentifier = creationParams["offeringIdentifier"] as String?
         nativePaywallFooterView = object : NativePaywallFooterView(context) {
             public override fun onMeasure(widthMeasureSpec: Int, heightMeasureSpec: Int) {
@@ -51,6 +52,30 @@ internal class PaywallFooterView(
                 updateHeight(finalHeight.toDouble())
             }
         }
+        nativePaywallFooterView.setPaywallListener(object : PaywallListenerWrapper() {
+            override fun onPurchaseStarted(rcPackage: Map<String, Any?>) {
+                methodChannel.invokeMethod("onPurchaseStarted", rcPackage)
+            }
+
+            override fun onPurchaseCompleted(customerInfo: Map<String, Any?>, storeTransaction: Map<String, Any?>) {
+                methodChannel.invokeMethod(
+                    "onPurchaseCompleted",
+                    mapOf("customerInfo" to customerInfo, "storeTransaction" to storeTransaction)
+                )
+            }
+
+            override fun onPurchaseError(error: Map<String, Any?>) {
+                methodChannel.invokeMethod("onPurchaseError", error)
+            }
+
+            override fun onRestoreCompleted(customerInfo: Map<String, Any?>) {
+                methodChannel.invokeMethod("onRestoreCompleted", customerInfo)
+            }
+
+            override fun onRestoreError(error: Map<String, Any?>) {
+                methodChannel.invokeMethod("onRestoreError", error)
+            }
+        })
         nativePaywallFooterView.layoutParams = FrameLayout.LayoutParams(
             FrameLayout.LayoutParams.MATCH_PARENT,
             FrameLayout.LayoutParams.MATCH_PARENT,

purchases_ui_flutter/ios/Classes/PurchasesUiPaywallFooterView.swift

@@ -38,6 +38,7 @@ class PurchasesUiPaywallFooterViewFactory: NSObject, FlutterPlatformViewFactory
 class PurchasesUiPaywallFooterView: NSObject, FlutterPlatformView {
     private let _view: UIView
     private var _paywallProxy: PaywallProxy?
+    // Need to keep the controller in memory while this view is alive otherwise the delegate is dealocated
     private var _paywallFooterViewController: PaywallFooterViewController
     private let channel: FlutterMethodChannel
 
@@ -47,7 +48,7 @@ class PurchasesUiPaywallFooterView: NSObject, FlutterPlatformView {
         arguments args: Any?,
         binaryMessenger messenger: FlutterBinaryMessenger
     ) {
-        channel = FlutterMethodChannel(name: "purchases_ui_flutter/PaywallFooterView/\(viewId)",
+        channel = FlutterMethodChannel(name: "com.revenuecat.purchasesui/PaywallFooterView/\(viewId)",
                                        binaryMessenger: messenger)
         let paywallProxy = PaywallProxy()
         _paywallProxy = paywallProxy
@@ -72,7 +73,6 @@ class PurchasesUiPaywallFooterView: NSObject, FlutterPlatformView {
     func view() -> UIView {
         return _view
     }
-
 }
 
 
@@ -84,4 +84,32 @@ extension PurchasesUiPaywallFooterView: PaywallViewControllerDelegateWrapper {
         channel.invokeMethod("onHeightChanged", arguments: newHeight)
     }
 
+    func paywallViewController(_ controller: PaywallViewController,
+                               didStartPurchaseWith packageDictionary: [String : Any]) {
+        channel.invokeMethod("onPurchaseStarted", arguments: packageDictionary)
+    }
+
+    func paywallViewController(_ controller: PaywallViewController,
+                               didFinishPurchasingWith customerInfoDictionary: [String : Any],
+                               transaction transactionDictionary: [String : Any]?) {
+        channel.invokeMethod("onPurchaseCompleted", arguments: [
+            "customerInfo":customerInfoDictionary,
+            "storeTransaction":transactionDictionary
+        ])
+    }
+
+    func paywallViewController(_ controller: PaywallViewController,
+                               didFailPurchasingWith errorDictionary: [String : Any]) {
+        channel.invokeMethod("onPurchaseError", arguments: errorDictionary)
+    }
+
+    func paywallViewController(_ controller: PaywallViewController,
+                               didFinishRestoringWith customerInfoDictionary: [String : Any]) {
+        channel.invokeMethod("onRestoreCompleted", arguments: customerInfoDictionary)
+    }
+
+    func paywallViewController(_ controller: PaywallViewController,
+                               didFailRestoringWith errorDictionary: [String : Any]) {
+        channel.invokeMethod("onRestoreError", arguments: errorDictionary)
+    }
 }

purchases_ui_flutter/ios/Classes/PurchasesUiPaywallView.swift

@@ -39,7 +39,7 @@ class PurchasesUiPaywallView: NSObject, FlutterPlatformView {
     private var _view: UIView
     private var _paywallProxy: PaywallProxy?
     private var _methodChannel: FlutterMethodChannel
-    // Need to keep the controller in memory otherwise while this view is alive otherwise the delegate is dealocated
+    // Need to keep the controller in memory while this view is alive otherwise the delegate is dealocated
     private var _paywallViewController: PaywallViewController
 
     init(

purchases_ui_flutter/lib/views/internal_paywall_footer_view.dart

@@ -5,31 +5,41 @@ import 'package:flutter/gestures.dart';
 import 'package:flutter/material.dart';
 import 'package:flutter/rendering.dart';
 import 'package:flutter/services.dart';
+import 'package:purchases_flutter/models/customer_info_wrapper.dart';
 import 'package:purchases_flutter/models/offering_wrapper.dart';
+import 'package:purchases_flutter/models/package_wrapper.dart';
+import 'package:purchases_flutter/models/purchases_error.dart';
+import 'package:purchases_flutter/models/store_transaction.dart';
 
-class InternalPaywallFooterView extends StatefulWidget {
+import 'paywall_view_method_handler.dart';
+
+class InternalPaywallFooterView extends StatelessWidget {
   final Offering? offering;
+  final Function(Package rcPackage)? onPurchaseStarted;
+  final Function(CustomerInfo customerInfo, StoreTransaction storeTransaction)?
+  onPurchaseCompleted;
+  final Function(PurchasesError)? onPurchaseError;
+  final Function(CustomerInfo customerInfo)? onRestoreCompleted;
+  final Function(PurchasesError)? onRestoreError;
   final Function(double) onHeightChanged;
 
   const InternalPaywallFooterView({
     Key? key,
     this.offering,
+    this.onPurchaseStarted,
+    this.onPurchaseCompleted,
+    this.onPurchaseError,
+    this.onRestoreCompleted,
+    this.onRestoreError,
     required this.onHeightChanged,
   }) : super(key: key);
 
   static const String _viewType = 'com.revenuecat.purchasesui/PaywallFooterView';
 
-  @override
-  State<InternalPaywallFooterView> createState() => _InternalPaywallFooterViewState();
-}
-
-class _InternalPaywallFooterViewState extends State<InternalPaywallFooterView> {
-  MethodChannel? _channel;
-
   @override
   Widget build(BuildContext context) {
     final creationParams = <String, dynamic>{
-      'offeringIdentifier': widget.offering?.identifier,
+      'offeringIdentifier': offering?.identifier,
     };
 
     return Platform.isAndroid
@@ -38,44 +48,26 @@ class _InternalPaywallFooterViewState extends State<InternalPaywallFooterView> {
   }
 
   UiKitView _buildUiKitView(Map<String, dynamic> creationParams) => UiKitView(
-    viewType: InternalPaywallFooterView._viewType,
+    viewType: _viewType,
     layoutDirection: TextDirection.ltr,
     creationParams: creationParams,
     creationParamsCodec: const StandardMessageCodec(),
-    onPlatformViewCreated: (id) {
-      _channel = MethodChannel(
-        'purchases_ui_flutter/PaywallFooterView/$id',
-      );
-      _channel?.setMethodCallHandler((call) async {
-        if (call.method == 'onHeightChanged') {
-          widget.onHeightChanged(call.arguments as double);
-        }
-      });
-    },
+    onPlatformViewCreated: _buildListenerChannel,
   );
 
   PlatformViewLink _buildAndroidPlatformViewLink(
       Map<String, dynamic> creationParams,
       ) =>
       PlatformViewLink(
-        viewType: InternalPaywallFooterView._viewType,
+        viewType: _viewType,
         surfaceFactory: (context, controller) => AndroidViewSurface(
           controller: controller as AndroidViewController,
           gestureRecognizers: const <Factory<OneSequenceGestureRecognizer>>{},
           hitTestBehavior: PlatformViewHitTestBehavior.opaque,
         ),
-        onCreatePlatformView: (params) {
-          _channel = MethodChannel(
-            'purchases_ui_flutter/PaywallFooterView/${params.id}',
-          );
-          _channel?.setMethodCallHandler((call) async {
-            if (call.method == 'onHeightChanged') {
-              widget.onHeightChanged(call.arguments as double);
-            }
-          });
-          return PlatformViewsService.initSurfaceAndroidView(
+        onCreatePlatformView: (params) => PlatformViewsService.initSurfaceAndroidView(
             id: params.id,
-            viewType: InternalPaywallFooterView._viewType,
+            viewType: _viewType,
             layoutDirection: TextDirection.ltr,
             creationParams: creationParams,
             creationParamsCodec: const StandardMessageCodec(),
@@ -84,7 +76,25 @@ class _InternalPaywallFooterViewState extends State<InternalPaywallFooterView> {
             },
           )
             ..addOnPlatformViewCreatedListener(params.onPlatformViewCreated)
-            ..create();
-        },
+            ..addOnPlatformViewCreatedListener(_buildListenerChannel)
+            ..create(),
       );
+
+  void _buildListenerChannel(int id) {
+    final handler = PaywallViewMethodHandler(
+      onPurchaseStarted,
+      onPurchaseCompleted,
+      onPurchaseError,
+      onRestoreCompleted,
+      onRestoreError,
+    );
+    MethodChannel('com.revenuecat.purchasesui/PaywallFooterView/$id')
+        .setMethodCallHandler((call) async {
+      if (call.method == 'onHeightChanged') {
+        onHeightChanged(call.arguments as double);
+      } else {
+        handler.handleMethodCall(call);
+      }
+    });
+  }
 }

purchases_ui_flutter/lib/views/paywall_footer_view.dart

@@ -1,7 +1,11 @@
 import 'dart:io';
 
 import 'package:flutter/material.dart';
+import 'package:purchases_flutter/models/customer_info_wrapper.dart';
 import 'package:purchases_flutter/models/offering_wrapper.dart';
+import 'package:purchases_flutter/models/package_wrapper.dart';
+import 'package:purchases_flutter/models/purchases_error.dart';
+import 'package:purchases_flutter/models/store_transaction.dart';
 
 import 'internal_paywall_footer_view.dart';
 
@@ -11,17 +15,44 @@ import 'internal_paywall_footer_view.dart';
 /// [offering] (Optional) The offering object to be displayed in the paywall.
 /// Obtained from [Purchases.getOfferings].
 ///
+/// [onPurchaseStarted] (Optional) Callback that gets called when a purchase
+/// is started.
+///
+/// [onPurchaseCompleted] (Optional) Callback that gets called when a purchase
+/// is completed.
+///
+/// [onPurchaseError] (Optional) Callback that gets called when a purchase
+/// fails.
+///
+/// [onRestoreCompleted] (Optional) Callback that gets called when a restore
+/// is completed. Note that this may get called even if no entitlements have
+/// been granted in case no relevant purchases were found.
+///
+/// [onRestoreError] (Optional) Callback that gets called when a restore
+/// fails.
+///
 /// [contentCreator] A function that creates the content to be displayed above
 /// the paywall. Make sure you apply the given padding to the bottom of your
 /// content to avoid overlap.
 class PaywallFooterView extends StatefulWidget {
 
   final Offering? offering;
+  final Function(Package rcPackage)? onPurchaseStarted;
+  final Function(CustomerInfo customerInfo, StoreTransaction storeTransaction)?
+  onPurchaseCompleted;
+  final Function(PurchasesError)? onPurchaseError;
+  final Function(CustomerInfo customerInfo)? onRestoreCompleted;
+  final Function(PurchasesError)? onRestoreError;
   final Widget Function(double bottomPadding) contentCreator;
 
   const PaywallFooterView({
     Key? key,
     this.offering,
+    this.onPurchaseStarted,
+    this.onPurchaseCompleted,
+    this.onPurchaseError,
+    this.onRestoreCompleted,
+    this.onRestoreError,
     required this.contentCreator,
   }) : super(key: key);
 
@@ -61,6 +92,11 @@ class _PaywallFooterViewState extends State<PaywallFooterView> {
           height: _height,
           child: InternalPaywallFooterView(
             offering: widget.offering,
+            onPurchaseStarted: widget.onPurchaseStarted,
+            onPurchaseCompleted: widget.onPurchaseCompleted,
+            onPurchaseError: widget.onPurchaseError,
+            onRestoreCompleted: widget.onRestoreCompleted,
+            onRestoreError: widget.onRestoreError,
             onHeightChanged: _updateHeight,
           ),
         ),