Fix colours and imports on macOS

Author: alessionossa

Sources/Flow/Nodes/IntNode.swift

@@ -6,6 +6,11 @@
 //
 
 import SwiftUI
+#if canImport(UIKit)
+import UIKit
+#elseif canImport(AppKit)
+import AppKit
+#endif
 
 public class IntNode: BaseNode {
 
@@ -48,7 +53,12 @@ public class IntNode: BaseNode {
             Port(name: "Value", type: .output, valueType: Int.self, parentNodeId: id)
         ]
 
+        #if canImport(UIKit)
         titleBarColor = Color(UIColor.systemMint)
+        #elseif canImport(AppKit)
+        titleBarColor = Color(NSColor.systemMint)
+        #endif
+        
 
         middleView = AnyView(IntMiddleView(node: self))
 

Sources/Flow/Nodes/StringNode.swift

@@ -7,6 +7,11 @@
 
 import SwiftUI
 import Combine
+#if canImport(UIKit)
+import UIKit
+#elseif canImport(AppKit)
+import AppKit
+#endif
 
 public class StringNode: BaseNode {
 
@@ -34,7 +39,11 @@ public class StringNode: BaseNode {
             Port(name: "Value", type: .output, valueType: String.self, parentNodeId: id)
         ]
 
+        #if canImport(UIKit)
         titleBarColor = Color(UIColor.systemTeal)
+        #elseif canImport(AppKit)
+        titleBarColor = Color(NSColor.systemTeal)
+        #endif
 
         middleView = AnyView(StringMiddleView(node: self))
 

Sources/Flow/Nodes/TriggerButtonNode.swift

@@ -7,6 +7,11 @@
 
 import SwiftUI
 import Combine
+#if canImport(UIKit)
+import UIKit
+#elseif canImport(AppKit)
+import AppKit
+#endif
 
 public class TriggerButtonNode: BaseNode {
 
@@ -31,7 +36,11 @@ public class TriggerButtonNode: BaseNode {
             Port(name: "Trigger", type: .output, valueType: Void.self, parentNodeId: id)
         ]
 
+        #if canImport(UIKit)
         titleBarColor = Color(UIColor.systemOrange)
+        #elseif canImport(AppKit)
+        titleBarColor = Color(NSColor.systemOrange)
+        #endif
 
         middleView = AnyView(TriggerMiddleView(node: self))