Add more workarounds for disabled field SwiftUI bug (#1147)

Author: stephencelis

Examples/CaseStudies/CaseStudies.xcodeproj/project.pbxproj

@@ -61,6 +61,7 @@
 		DC5B505125C86EBC000D8DFD /* 01-GettingStarted-Bindings-Forms.swift in Sources */ = {isa = PBXBuildFile; fileRef = DC5B505025C86EBC000D8DFD /* 01-GettingStarted-Bindings-Forms.swift */; };
 		DC630FDA2451016B00BAECBA /* ListsOfState.swift in Sources */ = {isa = PBXBuildFile; fileRef = DC630FD92451016B00BAECBA /* ListsOfState.swift */; };
 		DC634B252448D15B00DAA016 /* 04-HigherOrderReducers-ReusableFavoritingTests.swift in Sources */ = {isa = PBXBuildFile; fileRef = DC634B242448D15B00DAA016 /* 04-HigherOrderReducers-ReusableFavoritingTests.swift */; };
+		DC85EBC3285A731E00431CF3 /* ResignFirstResponder.swift in Sources */ = {isa = PBXBuildFile; fileRef = DC85EBC2285A731E00431CF3 /* ResignFirstResponder.swift */; };
 		DC88D8A6245341EC0077F427 /* 01-GettingStarted-Animations.swift in Sources */ = {isa = PBXBuildFile; fileRef = DC88D8A5245341EC0077F427 /* 01-GettingStarted-Animations.swift */; };
 		DC89C41B24460F95006900B9 /* 00-RootView.swift in Sources */ = {isa = PBXBuildFile; fileRef = DC89C41A24460F95006900B9 /* 00-RootView.swift */; };
 		DC89C41D24460F96006900B9 /* Assets.xcassets in Resources */ = {isa = PBXBuildFile; fileRef = DC89C41C24460F96006900B9 /* Assets.xcassets */; };
@@ -207,6 +208,7 @@
 		DC5B505025C86EBC000D8DFD /* 01-GettingStarted-Bindings-Forms.swift */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.swift; path = "01-GettingStarted-Bindings-Forms.swift"; sourceTree = "<group>"; };
 		DC630FD92451016B00BAECBA /* ListsOfState.swift */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.swift; path = ListsOfState.swift; sourceTree = "<group>"; };
 		DC634B242448D15B00DAA016 /* 04-HigherOrderReducers-ReusableFavoritingTests.swift */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.swift; path = "04-HigherOrderReducers-ReusableFavoritingTests.swift"; sourceTree = "<group>"; };
+		DC85EBC2285A731E00431CF3 /* ResignFirstResponder.swift */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.swift; path = ResignFirstResponder.swift; sourceTree = "<group>"; };
 		DC88D8A5245341EC0077F427 /* 01-GettingStarted-Animations.swift */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.swift; path = "01-GettingStarted-Animations.swift"; sourceTree = "<group>"; };
 		DC89C41324460F95006900B9 /* SwiftUICaseStudies.app */ = {isa = PBXFileReference; explicitFileType = wrapper.application; includeInIndex = 0; path = SwiftUICaseStudies.app; sourceTree = BUILT_PRODUCTS_DIR; };
 		DC89C41A24460F95006900B9 /* 00-RootView.swift */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.swift; path = "00-RootView.swift"; sourceTree = "<group>"; };
@@ -450,6 +452,7 @@
 			isa = PBXGroup;
 			children = (
 				CA6AC2612451135C00C71CB3 /* CircularProgressView.swift */,
+				DC85EBC2285A731E00431CF3 /* ResignFirstResponder.swift */,
 				DCC68EDE2447BC810037F998 /* TemplateText.swift */,
 				DC9EB4162450CBD2005F413B /* UIViewRepresented.swift */,
 			);
@@ -758,6 +761,7 @@
 				DC89C41B24460F95006900B9 /* 00-RootView.swift in Sources */,
 				DCC68EDD2447A5B00037F998 /* 01-GettingStarted-OptionalState.swift in Sources */,
 				CABC4F3926AEE00C00D5FA2C /* 02-Effects-Refreshable.swift in Sources */,
+				DC85EBC3285A731E00431CF3 /* ResignFirstResponder.swift in Sources */,
 				DCC68EAB244666AF0037F998 /* 03-Navigation-Sheet-PresentAndLoad.swift in Sources */,
 				CAE962FD24A7F7BE00EFC025 /* 01-GettingStarted-AlertsAndConfirmationDialogs.swift in Sources */,
 				CA25E5D224463AD700DA666A /* 01-GettingStarted-Bindings-Basics.swift in Sources */,

Examples/CaseStudies/SwiftUICaseStudies/01-GettingStarted-Bindings-Basics.swift

@@ -79,6 +79,7 @@ struct BindingBasicsView: View {
 
           Toggle(
             isOn: viewStore.binding(get: \.toggleIsOn, send: BindingBasicsAction.toggleChanged)
+              .resignFirstResponder()
           ) {
             Text("Disable other controls")
           }

Examples/CaseStudies/SwiftUICaseStudies/01-GettingStarted-Bindings-Forms.swift

@@ -64,7 +64,11 @@
             }
             .disabled(viewStore.toggleIsOn)
 
-            Toggle("Disable other controls", isOn: viewStore.binding(\.$toggleIsOn))
+            Toggle(
+              "Disable other controls",
+              isOn: viewStore.binding(\.$toggleIsOn)
+                .resignFirstResponder()
+            )
 
             Stepper(value: viewStore.binding(\.$stepCount), in: 0...100) {
               Text("Max slider value: \(viewStore.stepCount)")

Examples/CaseStudies/SwiftUICaseStudies/Internal/ResignFirstResponder.swift

@@ -0,0 +1,22 @@
+#if canImport(SwiftUI)
+import SwiftUI
+
+extension Binding {
+  /// SwiftUI will print errors to the console about "AttributeGraph: cycle detected" if you disable
+  /// a text field while it is focused. This hack will force all fields to unfocus before we write
+  /// to a binding that may disable the fields.
+  ///
+  /// See also: https://stackoverflow.com/a/69653555
+  func resignFirstResponder() -> Self {
+    Self(
+      get: { self.wrappedValue },
+      set: { newValue, transaction in
+        UIApplication.shared.sendAction(
+          #selector(UIResponder.resignFirstResponder), to: nil, from: nil, for: nil
+        )
+        self.transaction(transaction).wrappedValue = newValue
+      }
+    )
+  }
+}
+#endif