Fix FDialog.body not allowing ScrollViews (#704)

Author: Pante

forui/CHANGELOG.md

@@ -40,6 +40,8 @@ We've improved the styles' generated documentation. They should be much easier t
 * **Breaking** Move barrier related fields from `FDialogStyle` to `FDialogRouteStyle`.
 * **Breaking** Move animation related fields from `FDialogStyle` to `FDialogMotion`.
 
+* Fix `FDialog.body` not allowing `ScrollView`s.  
+
 
 ### `FFormField`
 * **Breaking** Add `FFormField(onReset: ...)`.

forui/lib/src/widgets/dialog/dialog_content.dart

@@ -46,11 +46,13 @@ sealed class Content extends StatelessWidget {
             ),
           ),
         if (body case final body?)
-          Padding(
-            padding: const EdgeInsets.only(bottom: 4),
-            child: Semantics(
-              container: true,
-              child: DefaultTextStyle.merge(textAlign: bodyTextAlign, style: style.bodyTextStyle, child: body),
+          Flexible(
+            child: Padding(
+              padding: const EdgeInsets.only(bottom: 4),
+              child: Semantics(
+                container: true,
+                child: DefaultTextStyle.merge(textAlign: bodyTextAlign, style: style.bodyTextStyle, child: body),
+              ),
             ),
           ),
         if (title != null && body != null) const SizedBox(height: 8),

forui/test/src/widgets/dialog/dialog_test.dart

@@ -109,5 +109,36 @@ void main() {
         expect(tester.takeException(), null);
       });
     }
+
+    testWidgets('scrollable body', (tester) async {
+      await tester.pumpWidget(
+        TestScaffold.app(
+          child: Builder(
+            builder: (context) => FButton(
+              mainAxisSize: MainAxisSize.min,
+              onPress: () => showFDialog(
+                context: context,
+                builder: (context, style, animation) => FDialog(
+                  style: style,
+                  animation: animation,
+                  title: const Text('Are you absolutely sure?'),
+                  body: SingleChildScrollView(child: Container(height: 5000)),
+                  actions: [
+                    FButton(style: FButtonStyle.outline(), child: const Text('Cancel'), onPress: () {}),
+                    FButton(child: const Text('Continue'), onPress: () {}),
+                  ],
+                ),
+              ),
+              child: const Text('Show Dialog'),
+            ),
+          ),
+        ),
+      );
+
+      await tester.tap(find.text('Show Dialog'));
+      await tester.pumpAndSettle();
+
+      expect(tester.takeException(), null);
+    });
   });
 }