Add ViewRespondersKey (#176)

Sources/OpenSwiftUICore/Data/Projection.swift

@@ -13,7 +13,7 @@ public protocol Projection: Hashable {
     func set(base: inout Base, newValue: Projected)
 }
 
-@_spi(ForSwiftUIOnly)
+@_spi(ForOpenSwiftUIOnly)
 extension Projection {
     package func composed<Tail>(with tail: Tail) -> ComposedProjection<Self, Tail> where Tail: Projection, Projected == Tail.Base {
         ComposedProjection(left: self, right: tail)

Sources/OpenSwiftUICore/Extension/CGPoint+Extension.swift

@@ -7,7 +7,8 @@
 
 public import Foundation
 
-@_spi(ForOpenSwiftUIOnly) public typealias PlatformPoint = CGPoint
+@_spi(ForOpenSwiftUIOnly)
+public typealias PlatformPoint = CGPoint
 
 extension CGPoint {
     @inlinable

Sources/OpenSwiftUICore/View/Graph/ViewGraph.swift

@@ -38,7 +38,7 @@ package final class ViewGraph: GraphHost {
                 inputs.preferences.add(DisplayList.Key.self)
             }
             if contains(.viewResponders) {
-                // inputs.preferences.add(ViewRespondersKey.self)
+                inputs.preferences.add(ViewRespondersKey.self)
             }
         }
     }
@@ -77,7 +77,7 @@ package final class ViewGraph: GraphHost {
     var eventSubgraph: Subgraph?
 
     @Attribute package var defaultLayoutComputer: LayoutComputer
-    // @WeakAttribute var rootResponders: [ViewResponder]?
+    @WeakAttribute var rootResponders: [ViewResponder]?
     @WeakAttribute var rootLayoutComputer: LayoutComputer?
     @WeakAttribute var rootDisplayList: (DisplayList, DisplayList.Version)?
 
@@ -250,7 +250,7 @@ package final class ViewGraph: GraphHost {
             }
         }
         if requestedOutputs.contains(.viewResponders) {
-            // _rootResponders = WeakAttribute(outputs.preferences[ViewRespondersKey.self])
+            _rootResponders = WeakAttribute(outputs.preferences[ViewRespondersKey.self])
         }
         if requestedOutputs.contains(.layout) {
             _rootLayoutComputer = WeakAttribute(outputs.layoutComputer)
@@ -272,7 +272,7 @@ package final class ViewGraph: GraphHost {
             rootGeometry.$layoutDirection = nil
         }
         $rootLayoutComputer = nil
-//        $rootResponders = nil
+        $rootResponders = nil
         $rootDisplayList = nil
         hostPreferenceValues = WeakAttribute()
         #endif

Sources/OpenSwiftUICore/EventHandling/InputEvent/HitTesting/ContentResponder.swift → Sources/OpenSwiftUICore/View/Responder/ContentResponder.swift

@@ -2,14 +2,14 @@
 //  ContentResponder.swift
 //  OpenSwiftUI
 //
-//  Audited for iOS 15.5
+//  Audited for iOS 18.0
 //  Status: WIP
 
 package import Foundation
 import OpenSwiftUI_SPI
 
 package protocol ContentResponder {
-    func contains(points: [CGPoint], size: CGSize) -> BitVector64
+    func contains(points: [PlatformPoint], size: CGSize) -> BitVector64
     func contentPath(size: CGSize) -> Path
     func contentPath(size: CGSize, kind: ContentShapeKinds) -> Path
 }

Sources/OpenSwiftUICore/View/Responder/ViewRespondersKey.swift

@@ -0,0 +1,22 @@
+//
+//  ViewRespondersKey.swift
+//  OpenSwiftUICore
+//
+//  Audited for iOS 18.0
+//  Status: Empty
+
+package struct ViewRespondersKey: PreferenceKey {
+    package static var defaultValue: [ViewResponder] { [] }
+
+    package static var _includesRemovedValues: Bool { true }
+
+    package static func reduce(value: inout Value, nextValue: () -> Value) {
+        value.append(contentsOf: nextValue())
+    }
+}
+
+// TODO
+
+@_spi(ForOpenSwiftUIOnly)
+open class ViewResponder/*: ResponderNode, CustomStringConvertible, CustomRecursiveStringConvertible*/ {
+}