Fix scroll physics and always scrollable option.

Author: BirjuVachhani

lib/src/api/mixins.dart

@@ -940,7 +940,7 @@ enum ScrollPhysicsC {
   /// the scroll view to its normal range when released.
   ///
   /// See [AlwaysScrollableScrollPhysics] in Flutter for more details.
-  alwaysScrollableScrollPhysics,
+  platformDependent,
 
   /// Scroll physics for environments that allow the scroll offset to go beyond
   /// the bounds of the content, but then bounce the content back to the edge of
@@ -981,8 +981,8 @@ enum ScrollPhysicsC {
         return 'Clamping';
       case ScrollPhysicsC.neverScrollableScrollPhysics:
         return 'Never Scrollable';
-      case ScrollPhysicsC.alwaysScrollableScrollPhysics:
-        return 'Always Scrollable';
+      case ScrollPhysicsC.platformDependent:
+        return 'Platform Dependent';
     }
   }
 }
@@ -1035,6 +1035,7 @@ mixin ScrollableMixin on BaseNode {
   late bool primary;
 
   /// Physics to use for the scrollable.
+  @JsonKey(unknownEnumValue: ScrollPhysicsC.platformDependent)
   late ScrollPhysicsC physics;
 
   /// Defines how a [ScrollView] should dismiss the on-screen keyboard.
@@ -1044,6 +1045,9 @@ mixin ScrollableMixin on BaseNode {
   /// code-gen and transformers.
   late bool useFlutterListView;
 
+  /// Whether to use AlwaysScrollableScrollPhysics or not.
+  late bool shouldAlwaysScroll;
+
   /// Sets the properties of this mixin.
   void setScrollableMixin({
     required bool isScrollable,
@@ -1054,6 +1058,7 @@ mixin ScrollableMixin on BaseNode {
     required bool shrinkWrap,
     required ScrollViewKeyboardDismissBehaviorC keyboardDismissBehavior,
     required bool useFlutterListView,
+    required bool shouldAlwaysScroll,
   }) {
     this.isScrollable = isScrollable;
     this.scrollDirection = scrollDirection;
@@ -1062,6 +1067,7 @@ mixin ScrollableMixin on BaseNode {
     this.primary = primary;
     this.keyboardDismissBehavior = keyboardDismissBehavior;
     this.useFlutterListView = useFlutterListView;
+    this.shouldAlwaysScroll = shouldAlwaysScroll;
   }
 }
 

lib/src/api/nodes/canvas_node.dart

@@ -94,12 +94,13 @@ class CanvasNode extends ParentNode
     bool isScrollable = false,
     AxisC scrollDirection = AxisC.vertical,
     bool reverse = false,
-    ScrollPhysicsC physics = ScrollPhysicsC.alwaysScrollableScrollPhysics,
+    ScrollPhysicsC physics = ScrollPhysicsC.platformDependent,
     bool primary = true,
     bool shrinkWrap = false,
     ScrollViewKeyboardDismissBehaviorC keyboardDismissBehavior =
         ScrollViewKeyboardDismissBehaviorC.manual,
     bool useFlutterListView = false,
+    bool shouldAlwaysScroll = true,
 
     // Custom properties.
     required this.properties,
@@ -123,6 +124,7 @@ class CanvasNode extends ParentNode
       shrinkWrap: shrinkWrap,
       keyboardDismissBehavior: keyboardDismissBehavior,
       useFlutterListView: useFlutterListView,
+      shouldAlwaysScroll: shouldAlwaysScroll,
     );
   }
 

lib/src/api/nodes/canvas_node.g.dart

@@ -63,12 +63,13 @@ class FrameNode extends DefaultShapeNode
     bool isScrollable = false,
     AxisC scrollDirection = AxisC.vertical,
     bool reverse = false,
-    ScrollPhysicsC physics = ScrollPhysicsC.alwaysScrollableScrollPhysics,
+    ScrollPhysicsC physics = ScrollPhysicsC.platformDependent,
     bool primary = true,
     bool shrinkWrap = false,
     ScrollViewKeyboardDismissBehaviorC keyboardDismissBehavior =
         ScrollViewKeyboardDismissBehaviorC.manual,
     bool useFlutterListView = false,
+    bool shouldAlwaysScroll = true,
 
     // [PortalMixin] properties.
     String? canvasID,
@@ -92,6 +93,7 @@ class FrameNode extends DefaultShapeNode
       shrinkWrap: shrinkWrap,
       keyboardDismissBehavior: keyboardDismissBehavior,
       useFlutterListView: useFlutterListView,
+      shouldAlwaysScroll: shouldAlwaysScroll,
     );
 
     setPortalMixin(

lib/src/api/nodes/frame_node.dart

@@ -61,10 +61,11 @@ class ListViewNode extends SinglePlaceholderNode
     // [ScrollableMixin] properties.
     AxisC scrollDirection = AxisC.vertical,
     bool reverse = false,
-    ScrollPhysicsC physics = ScrollPhysicsC.alwaysScrollableScrollPhysics,
+    ScrollPhysicsC physics = ScrollPhysicsC.platformDependent,
     bool primary = false,
     ScrollViewKeyboardDismissBehaviorC keyboardDismissBehavior =
         ScrollViewKeyboardDismissBehaviorC.manual,
+    bool shouldAlwaysScroll = true,
   }) : super(
           children: [],
           allowedTypes: [],
@@ -84,6 +85,7 @@ class ListViewNode extends SinglePlaceholderNode
       shrinkWrap: false,
       keyboardDismissBehavior: keyboardDismissBehavior,
       useFlutterListView: true,
+      shouldAlwaysScroll: shouldAlwaysScroll,
     );
   }
 

lib/src/api/nodes/frame_node.g.dart

@@ -52,10 +52,11 @@ class PageViewNode extends SinglePlaceholderNode
     // [ScrollableMixin] properties.
     AxisC scrollDirection = AxisC.vertical,
     bool reverse = false,
-    ScrollPhysicsC physics = ScrollPhysicsC.alwaysScrollableScrollPhysics,
+    ScrollPhysicsC physics = ScrollPhysicsC.platformDependent,
     bool primary = false,
     ScrollViewKeyboardDismissBehaviorC keyboardDismissBehavior =
         ScrollViewKeyboardDismissBehaviorC.manual,
+    bool shouldAlwaysScroll = true,
   }) : super(
           children: [],
           allowedTypes: [],
@@ -73,6 +74,7 @@ class PageViewNode extends SinglePlaceholderNode
       shrinkWrap: false,
       keyboardDismissBehavior: keyboardDismissBehavior,
       useFlutterListView: true,
+      shouldAlwaysScroll: shouldAlwaysScroll,
     );
   }
 

lib/src/api/nodes/list_view_node.dart

@@ -68,12 +68,13 @@ class RowColumnNode extends ParentNode with RowColumnMixin, ScrollableMixin {
     // [ScrollableMixin] properties.
     bool isScrollable = false,
     bool reverse = false,
-    ScrollPhysicsC physics = ScrollPhysicsC.alwaysScrollableScrollPhysics,
+    ScrollPhysicsC physics = ScrollPhysicsC.platformDependent,
     bool primary = true,
     bool shrinkWrap = false,
     ScrollViewKeyboardDismissBehaviorC keyboardDismissBehavior =
         ScrollViewKeyboardDismissBehaviorC.manual,
     bool useFlutterListView = false,
+    bool shouldAlwaysScroll = true,
   }) {
     setRowColumnMixin(
       rowColumnType: rowColumnType,
@@ -90,6 +91,7 @@ class RowColumnNode extends ParentNode with RowColumnMixin, ScrollableMixin {
       shrinkWrap: shrinkWrap,
       keyboardDismissBehavior: keyboardDismissBehavior,
       useFlutterListView: useFlutterListView,
+      shouldAlwaysScroll: shouldAlwaysScroll,
     );
   }