feat: support customizing link button (#1048)

lib/src/editor/editor_component/service/shortcuts/command/open_link_command.dart

@@ -38,7 +38,7 @@ KeyEventResult _openInlineLink(
   }
 
   if (linkText != null) {
-    safeLaunchUrl(linkText);
+    editorLaunchUrl(linkText);
   }
 
   return KeyEventResult.handled;

lib/src/editor/editor_component/style/default_text_span_decorator_for_attribute.dart

@@ -37,7 +37,7 @@ TextSpan defaultTextSpanDecoratorForAttribute(
             HardwareKeyboard.instance.isControlPressed ||
             HardwareKeyboard.instance.isMetaPressed) {
           tapCount = 0;
-          safeLaunchUrl(href);
+          editorLaunchUrl(href);
           return;
         }
         timer = Timer(const Duration(milliseconds: 200), () {

lib/src/editor/toolbar/desktop/items/link/link_toolbar_item.dart

@@ -92,7 +92,7 @@ void showLinkMenu(
         linkText: linkText,
         editorState: editorState,
         onOpenLink: () async {
-          await safeLaunchUrl(linkText);
+          await editorLaunchUrl(linkText);
         },
         onSubmitted: (text) async {
           if (isUri(text)) {

lib/src/extensions/url_launcher_extension.dart

@@ -12,3 +12,5 @@ Future<bool> safeLaunchUrl(String? href) async {
   }
   return Future.value(true);
 }
+
+Future<bool> Function(String? href) editorLaunchUrl = safeLaunchUrl;

test/extensions/url_launcher_extension_test.dart

@@ -4,7 +4,7 @@ import 'package:flutter_test/flutter_test.dart';
 void main() {
   test('safeLaunchUrl without href and scheme', () async {
     const href = null;
-    final result = await safeLaunchUrl(href);
+    final result = await editorLaunchUrl(href);
     expect(result, false);
   });
 }

test/mobile/editor/editor_component/style/mobile_text_span_decorator_for_attribute_test.dart

@@ -27,7 +27,7 @@ void main() {
           await widgetTester.pumpAndSettle();
 
           // test the method only
-          expect(() => safeLaunchUrl(address), returnsNormally);
+          expect(() => editorLaunchUrl(address), returnsNormally);
         },
       );
       testWidgets(