Adding fallback implementation for unsupported platforms

shihaohong · Apr 20, 2022 · 754012c · 754012c
1 parent dcf9870
commit 754012c
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Showing 5 changed files with 37 additions and 5 deletions.
diff --git a/rich_clipboard_macos/lib/rich_clipboard_macos.dart b/rich_clipboard_macos/lib/rich_clipboard_macos.dart
@@ -1,2 +1,4 @@
-// All functionality is implemented via a MethodChannel in Swift. This file is
-// here to stop Flutter from breaking.
+// Re-export the default method channel implementation so flutter code gen can
+// find it.
+export 'package:rich_clipboard_platform_interface/rich_clipboard_platform_interface.dart'
+    show MethodChannelRichClipboard;
diff --git a/rich_clipboard_macos/pubspec.yaml b/rich_clipboard_macos/pubspec.yaml
@@ -26,4 +26,5 @@ flutter:
     implements: rich_clipboard
     platforms:
       macos:
-        pluginClass: RichClipboardPlugin
+        pluginClass: RichClipboardPlugin
+        dartPluginClass: MethodChannelRichClipboard
diff --git a/rich_clipboard_platform_interface/lib/rich_clipboard_platform_interface.dart b/rich_clipboard_platform_interface/lib/rich_clipboard_platform_interface.dart
@@ -1,16 +1,17 @@
 import 'package:plugin_platform_interface/plugin_platform_interface.dart';
 
-import 'src/method_channel_rich_clipboard.dart';
+import 'src/fallback_rich_clipboard.dart';
 import 'src/rich_clipboard_data.dart';
 
+export 'src/method_channel_rich_clipboard.dart' show MethodChannelRichClipboard;
 export 'src/rich_clipboard_data.dart' show RichClipboardData;
 
 abstract class RichClipboardPlatform extends PlatformInterface {
   RichClipboardPlatform() : super(token: _token);
 
   static final Object _token = Object();
 
-  static RichClipboardPlatform _instance = MethodChannelRichClipboard();
+  static RichClipboardPlatform _instance = FallbackRichClipboard();
 
   static RichClipboardPlatform get instance => _instance;
 

diff --git a/rich_clipboard_platform_interface/lib/src/fallback_rich_clipboard.dart b/rich_clipboard_platform_interface/lib/src/fallback_rich_clipboard.dart
@@ -0,0 +1,21 @@
+import 'package:flutter/services.dart';
+
+import '../rich_clipboard_platform_interface.dart';
+
+/// A partial implementation of [RichClipboardPlatform] that provides
+/// functionality on unsupported platforms.
+///
+/// This class uses Flutter's built-in [Clipboard] to provide plain text support
+/// and silently discards other content types
+class FallbackRichClipboard extends RichClipboardPlatform {
+  @override
+  Future<List<String>> getAvailableTypes() async =>
+      const [Clipboard.kTextPlain];
+
+  @override
+  Future<RichClipboardData> getData() => Clipboard.getData(Clipboard.kTextPlain)
+      .then((d) => RichClipboardData(text: d?.text));
+
+  @override
+  Future<void> setData(RichClipboardData data) => Clipboard.setData(data);
+}
diff --git a/rich_clipboard_platform_interface/lib/src/method_channel_rich_clipboard.dart b/rich_clipboard_platform_interface/lib/src/method_channel_rich_clipboard.dart
@@ -4,7 +4,14 @@ import '../rich_clipboard_platform_interface.dart';
 
 const MethodChannel _channel = MethodChannel('com.bringingfire.rich_clipboard');
 
+/// A default [RichClipboardPlatform] implementation backed by a platform
+/// channel.
 class MethodChannelRichClipboard extends RichClipboardPlatform {
+  /// Registers this implementation.
+  static void registerWith() {
+    RichClipboardPlatform.instance = MethodChannelRichClipboard();
+  }
+
   @override
   Future<List<String>> getAvailableTypes() async {
     final List<String>? result =