Optimize HostingExample project (#217)

Author: Kyle-Ye

Example/Example.xcodeproj/project.pbxproj

@@ -53,6 +53,7 @@
 /* End PBXFileReference section */
 
 /* Begin PBXFileSystemSynchronizedRootGroup section */
+		27C4C20C2D8178CF00511552 /* Examples */ = {isa = PBXFileSystemSynchronizedRootGroup; explicitFileTypes = {}; explicitFolders = (); path = Examples; sourceTree = "<group>"; };
 		27E6C4F62D2842D80010502F /* Configurations */ = {isa = PBXFileSystemSynchronizedRootGroup; explicitFileTypes = {}; explicitFolders = (); name = Configurations; path = ../Configurations; sourceTree = "<group>"; };
 /* End PBXFileSystemSynchronizedRootGroup section */
 
@@ -130,6 +131,7 @@
 		27D49DF92BA604FB00F6E2E2 /* HostingExample */ = {
 			isa = PBXGroup;
 			children = (
+				27C4C20C2D8178CF00511552 /* Examples */,
 				27D49DFA2BA604FB00F6E2E2 /* AppDelegate.swift */,
 				27D49DFC2BA604FB00F6E2E2 /* SceneDelegate.swift */,
 				27D49DFE2BA604FB00F6E2E2 /* ViewController.swift */,
@@ -186,6 +188,9 @@
 			);
 			dependencies = (
 			);
+			fileSystemSynchronizedGroups = (
+				27C4C20C2D8178CF00511552 /* Examples */,
+			);
 			name = HostingExample;
 			packageProductDependencies = (
 				27D49E0D2BA60AF600F6E2E2 /* OpenSwiftUI */,

Example/HostingExample/Examples/AppearanceActionModifierExample.swift

@@ -0,0 +1,28 @@
+//
+//  AppearanceActionModifierExample.swift
+//  HostingExample
+
+#if OPENSWIFTUI
+import OpenSwiftUI
+#else
+import SwiftUI
+#endif
+import Foundation
+
+struct AppearanceActionModifierExample: View {
+    @State private var first = true
+
+    var body: some View {
+        Color(uiColor: first ? .red : .blue)
+            .onAppear {
+                print("View appear")
+                DispatchQueue.main.asyncAfter(deadline: .now() + 1) {
+                    first.toggle()
+                }
+            }
+            .onDisappear {
+                print("View disappear")
+            }
+            .id(first)
+    }
+}

Example/HostingExample/Examples/ConditionalContentExample.swift

@@ -0,0 +1,42 @@
+//
+//  ConditionalContentExample.swift
+//  HostingExample
+
+#if OPENSWIFTUI
+import OpenSwiftUI
+#else
+import SwiftUI
+#endif
+import Foundation
+
+// FIXME
+struct ConditionalContentExample: View {
+    @State private var first = true
+
+    var body: some View {
+        if first {
+            Color.red
+            .onAppear {
+                print("Red appear")
+                DispatchQueue.main.asyncAfter(deadline: .now() + 1) {
+                    first.toggle()
+                }
+            }
+            .onDisappear {
+                print("Red disappear")
+            }
+            .id(first)
+        } else {
+            Color.blue
+                .onAppear {
+                    print("Blue appear")
+                    DispatchQueue.main.asyncAfter(deadline: .now() + 1) {
+                        first.toggle()
+                    }
+                }
+                .onDisappear {
+                    print("Blue disappear")
+                }
+        }
+    }
+}

Example/HostingExample/Examples/NamespaceExample.swift

@@ -0,0 +1,29 @@
+//
+//  NamespaceExample.swift
+//  HostingExample
+
+#if OPENSWIFTUI
+import OpenSwiftUI
+#else
+import SwiftUI
+#endif
+import Foundation
+
+struct NamespaceExample: View {
+    @State private var first = true
+    @Namespace private var id
+
+    var body: some View {
+        Color(uiColor: first ? .red : .blue)
+            .onAppear {
+                print("View appear \(id)")
+                DispatchQueue.main.asyncAfter(deadline: .now() + 1) {
+                    first.toggle()
+                }
+            }
+            .onDisappear {
+                print("View disappear \(id)")
+            }
+            .id(first)
+    }
+}

Example/HostingExample/ViewController.swift

@@ -39,37 +39,8 @@ final class EntryViewController: UIViewController {
     }
 }
 
-// TODO: Known issue
-// 1. State toggle crash
-// 2. pop - UIHostingView deinit crash / onDisappear
-// 3. if else builder issue
 struct ContentView: View {
-    @State private var first = true
-    
     var body: some View {
-//        if first {
-        Color(uiColor: first ? .red : .blue)
-            .onAppear {
-                print("View appear")
-                DispatchQueue.main.asyncAfter(deadline: .now() + 1) {
-                    first.toggle()
-                }
-            }
-            .onDisappear {
-                print("Red disappear")
-            }
-            .id(first)
-//        } else {
-//            Color.blue
-//                .onAppear {
-//                    print("Blue appear")
-//                    DispatchQueue.main.asyncAfter(deadline: .now() + 1) {
-//                        first.toggle()
-//                    }
-//                }
-//                .onDisappear {
-//                    print("Blue disappear")
-//                }
-//        }
+        AppearanceActionModifierExample()
     }
 }

Tests/OpenSwiftUICoreTests/Data/NamespaceTests.swift

@@ -0,0 +1,31 @@
+//
+//  NamespaceTests.swift
+//  OpenSwiftUICoreTests
+
+import Testing
+import OpenSwiftUICore
+import Foundation
+
+struct NamespaceTests {
+    @Test
+    func example() {
+        struct ContentView: View {
+            @State private var first = false
+            @Namespace private var id
+
+            var body: some View {
+                Color(uiColor: first ? .red : .blue)
+                    .onAppear {
+                        print("View appear")
+                        DispatchQueue.main.asyncAfter(deadline: .now() + 1) {
+                            first.toggle()
+                        }
+                    }
+                    .onDisappear {
+                        print("Red disappear")
+                    }
+                    .id(first)
+            }
+        }
+    }
+}