- First commit

.flutter-plugins

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+# This is a generated file; do not edit or check into version control.
+webview_flutter=/Users/krrigan/Flutter/SDK/.pub-cache/hosted/pub.dartlang.org/webview_flutter-2.3.1/
+webview_flutter_android=/Users/krrigan/Flutter/SDK/.pub-cache/hosted/pub.dartlang.org/webview_flutter_android-2.4.0/
+webview_flutter_wkwebview=/Users/krrigan/Flutter/SDK/.pub-cache/hosted/pub.dartlang.org/webview_flutter_wkwebview-2.5.0/

.flutter-plugins-dependencies

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+{"info":"This is a generated file; do not edit or check into version control.","plugins":{"ios":[{"name":"webview_flutter_wkwebview","path":"/Users/krrigan/Flutter/SDK/.pub-cache/hosted/pub.dartlang.org/webview_flutter_wkwebview-2.5.0/","dependencies":[]}],"android":[{"name":"webview_flutter_android","path":"/Users/krrigan/Flutter/SDK/.pub-cache/hosted/pub.dartlang.org/webview_flutter_android-2.4.0/","dependencies":[]}],"macos":[],"linux":[],"windows":[],"web":[]},"dependencyGraph":[{"name":"webview_flutter","dependencies":["webview_flutter_android","webview_flutter_wkwebview"]},{"name":"webview_flutter_android","dependencies":[]},{"name":"webview_flutter_wkwebview","dependencies":[]}],"date_created":"2021-12-06 16:42:01.600814","version":"2.7.0-3.1.pre"}

.gitignore

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+# Miscellaneous
+*.class
+*.log
+*.pyc
+*.swp
+.DS_Store
+.atom/
+.buildlog/
+.history
+.svn/
+
+# IntelliJ related
+*.iml
+*.ipr
+*.iws
+.idea/
+
+# The .vscode folder contains launch configuration and tasks you configure in
+# VS Code which you may wish to be included in version control, so this line
+# is commented out by default.
+#.vscode/
+
+# Flutter/Dart/Pub related
+# Libraries should not include pubspec.lock, per https://dart.dev/guides/libraries/private-files#pubspeclock.
+/pubspec.lock
+**/doc/api/
+.dart_tool/
+.packages
+build/

.metadata

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+# This file tracks properties of this Flutter project.
+# Used by Flutter tool to assess capabilities and perform upgrades etc.
+#
+# This file should be version controlled and should not be manually edited.
+
+version:
+  revision: fc7015e35aac7ab785e7ae15a47db5c9e669ec7f
+  channel: beta
+
+project_type: package

.pubignore

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+# Miscellaneous
+*.class
+*.log
+*.pyc
+*.swp
+.DS_Store
+.atom/
+.buildlog/
+.history
+.svn/
+
+# IntelliJ related
+*.iml
+*.ipr
+*.iws
+.idea/
+
+# The .vscode folder contains launch configuration and tasks you configure in
+# VS Code which you may wish to be included in version control, so this line
+# is commented out by default.
+#.vscode/
+
+# Flutter/Dart/Pub related
+**/doc/api/
+.dart_tool/
+.flutter-plugins
+.packages
+.pub-cache/
+.pub/
+/build/

CHANGELOG.md

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+## 0.0.1
+
+* TODO: Describe initial release.

LICENSE

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+Copyright 2016, the Dart project authors. All rights reserved.
+Redistribution and use in source and binary forms, with or without
+modification, are permitted provided that the following conditions are
+met:
+
+    * Redistributions of source code must retain the above copyright
+      notice, this list of conditions and the following disclaimer.
+    * Redistributions in binary form must reproduce the above
+      copyright notice, this list of conditions and the following
+      disclaimer in the documentation and/or other materials provided
+      with the distribution.
+    * Neither the name of Google Inc. nor the names of its
+      contributors may be used to endorse or promote products derived
+      from this software without specific prior written permission.
+
+THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+"AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+(INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.

README.md

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+<!-- 
+This README describes the package. If you publish this package to pub.dev,
+this README's contents appear on the landing page for your package.
+
+For information about how to write a good package README, see the guide for
+[writing package pages](https://dart.dev/guides/libraries/writing-package-pages). 
+
+For general information about developing packages, see the Dart guide for
+[creating packages](https://dart.dev/guides/libraries/create-library-packages)
+and the Flutter guide for
+[developing packages and plugins](https://flutter.dev/developing-packages). 
+-->
+
+TODO: Put a short description of the package here that helps potential users
+know whether this package might be useful for them.
+
+## Features
+
+TODO: List what your package can do. Maybe include images, gifs, or videos.
+
+## Getting started
+
+TODO: List prerequisites and provide or point to information on how to
+start using the package.
+
+## Usage
+
+TODO: Include short and useful examples for package users. Add longer examples
+to `/example` folder. 
+
+```dart
+const like = 'sample';
+```
+
+## Additional information
+
+TODO: Tell users more about the package: where to find more information, how to 
+contribute to the package, how to file issues, what response they can expect 
+from the package authors, and more.

analysis_options.yaml

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+include: package:flutter_lints/flutter.yaml
+
+# Additional information about this file can be found at
+# https://dart.dev/guides/language/analysis-options

check-publish

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+flutter pub publish --dry-run $1

lib/oauth_webauth.dart

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+library oauth_webauth;
+
+export 'package:oauth_webauth/src/oauth_web_view.dart';
+export 'package:oauth_webauth/src/oauth_web_screen.dart';

lib/src/oauth_web_screen.dart

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+
+import 'package:flutter/material.dart';
+import 'package:oauth2/oauth2.dart';
+import 'package:oauth_webauth/src/oauth_web_view.dart';
+
+class OAuthWebScreen extends StatelessWidget {
+
+  static Future? start({
+    Key? key,
+    required BuildContext context,
+    required String authorizationEndpointUrl,
+    required String tokenEndpointUrl,
+    required String redirectUrl,
+    required String clientId,
+    String? clientSecret,
+    List<String>? scopes,
+    String? loginHint,
+    List<String>? promptValues,
+    ValueChanged<Credentials>? onSuccess,
+    ValueChanged<dynamic>? onError,
+    VoidCallback? onCancel,
+    ThemeData? themeData,
+    Map<String, String>? tooltipLocales
+  }) => Navigator.push(context,
+    MaterialPageRoute(builder: (context) =>
+      OAuthWebScreen(
+        authorizationEndpointUrl: authorizationEndpointUrl,
+        tokenEndpointUrl: tokenEndpointUrl,
+        redirectUrl: redirectUrl,
+        clientId: clientId,
+        clientSecret: clientSecret,
+        scopes: scopes,
+        loginHint: loginHint,
+        promptValues: promptValues,
+        onSuccess: onSuccess,
+        onError: onError,
+        onCancel: onCancel,
+        themeData: themeData,
+        tooltipLocales: tooltipLocales,
+      )
+    ));
+
+
+  final String authorizationEndpointUrl;
+  final String tokenEndpointUrl;
+  final String redirectUrl;
+  final String clientId;
+  final String? clientSecret;
+  final List<String>? scopes;
+  final String? loginHint;
+  final List<String>? promptValues;
+
+  /// This function will be called when user successfully authenticates.
+  /// It will receive the Oauth Credentials
+  final ValueChanged<Credentials>? onSuccess;
+
+  /// This function will be called if any error occurs.
+  /// It will receive the error data which could be some Exception or Error
+  final ValueChanged<dynamic>? onError;
+
+  /// This function will be called when user cancels authentication.
+  final VoidCallback? onCancel;
+
+  final ThemeData? themeData;
+  final Map<String, String>? tooltipLocales;
+
+  late final BuildContext context;
+  final paymentViewStateKey = GlobalKey<OAuthWebViewState>();
+
+  OAuthWebScreen({
+    Key? key,
+    required this.authorizationEndpointUrl,
+    required this.tokenEndpointUrl,
+    required this.redirectUrl,
+    required this.clientId,
+    this.clientSecret,
+    this.scopes,
+    this.loginHint,
+    this.promptValues,
+    this.onSuccess,
+    this.onError,
+    this.onCancel,
+    this.themeData,
+    this.tooltipLocales,
+  }) : super(key: key);
+
+  @override
+  Widget build(BuildContext context) {
+    return Builder(
+      builder: (context) {
+        this.context = context;
+        return Scaffold(
+          body: WillPopScope(
+            onWillPop: onBackPressed,
+            child: OAuthWebView(
+              key: paymentViewStateKey,
+              authorizationEndpointUrl: authorizationEndpointUrl,
+              tokenEndpointUrl: tokenEndpointUrl,
+              clientId: clientId,
+              clientSecret: clientSecret,
+              redirectUrl: redirectUrl,
+              scopes: scopes,
+              loginHint: loginHint,
+              promptValues: promptValues,
+              onSuccess: _onSuccess,
+              onError: _onError,
+              onCancel: _onCancel,
+              themeData: themeData,
+              tooltipLocales: tooltipLocales,
+            ),
+          ),
+        );
+      },
+    );
+  }
+
+  void _onSuccess(Credentials credentials) {
+    Navigator.pop(context, credentials);
+    onSuccess?.call(credentials);
+  }
+
+  void _onError(dynamic error) {
+    Navigator.pop(context, error);
+    onError?.call(error);
+  }
+
+  void _onCancel() {
+    Navigator.pop(context);
+    onCancel?.call();
+  }
+
+  Future<bool> onBackPressed() async {
+    if(!((await paymentViewStateKey.currentState?.onBackPressed()) ?? false)) {
+      return false;
+    }
+    onCancel?.call();
+    return true;
+  }
+
+}