diff --git a/app/xcode/Sources/VCamBridge/ExternalStateBinding.swift b/app/xcode/Sources/VCamBridge/ExternalStateBinding.swift
index bdc1abc..9ab4699 100644
--- a/app/xcode/Sources/VCamBridge/ExternalStateBinding.swift
+++ b/app/xcode/Sources/VCamBridge/ExternalStateBinding.swift
@@ -72,4 +72,8 @@ private var reloaders: [UUID: Reloader] = [:]
             wrappedValue[keyPath: keyPath] = newValue.wrappedValue
         }
     }
+
+    public static func constant(_ value: Value) -> Self {
+        .init(id: UUID(uuidString: "2546C91C-12FB-4BC2-A7C0-F1A7DA7318C0")!, get: { value }, set: { _ in })
+    }
 }
diff --git a/app/xcode/Sources/VCamBridge/UniBridge.swift b/app/xcode/Sources/VCamBridge/UniBridge.swift
index 1837e79..3cb260c 100644
--- a/app/xcode/Sources/VCamBridge/UniBridge.swift
+++ b/app/xcode/Sources/VCamBridge/UniBridge.swift
@@ -2,7 +2,11 @@
 import SwiftUI
 public final class UniBridge {
     public static let shared = UniBridge()
+    #if DEBUG
+    public init() {}
+    #else
     private init() {}
+    #endif
     public enum IntType: Int32 {
         case lensFlare = 0
         case facialExpression = 1
diff --git a/app/xcode/Sources/VCamUI/RootContentView.swift b/app/xcode/Sources/VCamUI/RootContentView.swift
index 630cf65..0ab7b99 100644
--- a/app/xcode/Sources/VCamUI/RootContentView.swift
+++ b/app/xcode/Sources/VCamUI/RootContentView.swift
@@ -6,21 +6,18 @@
 //
 
 import SwiftUI
+import VCamBridge
 
-public struct RootContentView<VCamUI: View, MenuBottomView: View, Toolbar: View>: View {
-    public init(vcamUI: VCamUI, menuBottomView: MenuBottomView, toolbar: Toolbar, unityView: NSView, interactable: Bool) {
-        self.vcamUI = vcamUI
+public struct RootContentView<MenuBottomView: View>: View {
+    public init(menuBottomView: MenuBottomView, unityView: NSView, interactable: ExternalStateBinding<Bool> = .init(.interactable)) {
         self.menuBottomView = menuBottomView
-        self.toolbar = toolbar
         self.unityView = unityView
-        self.interactable = interactable
+        self._interactable = interactable
     }
 
-    let vcamUI: VCamUI
     let menuBottomView: MenuBottomView
-    let toolbar: Toolbar
     let unityView: NSView
-    let interactable: Bool
+    @ExternalStateBinding(.interactable) private var interactable
 
     public var body: some View {
         if interactable {
@@ -36,7 +33,7 @@ public struct RootContentView<VCamUI: View, MenuBottomView: View, Toolbar: View>
 
                 VSplitView {
                     HStack(alignment: .bottom, spacing: 0) {
-                        toolbar
+                        VCamMainToolbar()
                         UnityView(unityView: unityView)
                             .equatable()
                             .frame(maxWidth: .infinity)
@@ -44,7 +41,7 @@ public struct RootContentView<VCamUI: View, MenuBottomView: View, Toolbar: View>
                     .frame(maxWidth: .infinity)
                     .layoutPriority(1)
 
-                    vcamUI
+                    VCamContentView()
                         .onTapGesture {
                             unityView.window?.makeFirstResponder(nil)
                             NotificationCenter.default.post(name: .unfocusObject, object: nil)
@@ -88,11 +85,9 @@ private struct UnityContainerView: NSViewRepresentable {
 struct RootContentView_Previews: PreviewProvider {
     static var previews: some View {
         RootContentView(
-            vcamUI: Color.red,
             menuBottomView: Color.blue,
-            toolbar: Color.yellow,
             unityView: NSView(),
-            interactable: true
+            interactable: .constant(true)
         )
     }
 }
diff --git a/app/xcode/Sources/VCamUI/Toolbar/VCamMainToolbar.swift b/app/xcode/Sources/VCamUI/Toolbar/VCamMainToolbar.swift
index e2d72c5..b4a77cb 100644
--- a/app/xcode/Sources/VCamUI/Toolbar/VCamMainToolbar.swift
+++ b/app/xcode/Sources/VCamUI/Toolbar/VCamMainToolbar.swift
@@ -9,17 +9,7 @@ import SwiftUI
 import VCamEntity
 
 public struct VCamMainToolbar: View {
-    public init(photoPicker: VCamMainToolbarBackgroundColorPicker, emojiPicker: VCamMainToolbarEmojiPicker, motionPicker: VCamMainToolbarMotionPicker, blendShapePicker: VCamMainToolbarBlendShapePicker) {
-        self.photoPicker = photoPicker
-        self.emojiPicker = emojiPicker
-        self.motionPicker = motionPicker
-        self.blendShapePicker = blendShapePicker
-    }
-
-    let photoPicker: VCamMainToolbarBackgroundColorPicker
-    let emojiPicker: VCamMainToolbarEmojiPicker
-    let motionPicker: VCamMainToolbarMotionPicker
-    let blendShapePicker: VCamMainToolbarBlendShapePicker
+    public init() {}
 
     @State private var isPhotoPopover = false
     @State private var isEmojiPickerPopover = false
@@ -38,7 +28,7 @@ public struct VCamMainToolbar: View {
             }
             .popover(isPresented: $isPhotoPopover) {
                 VCamPopoverContainer(L10n.background.key) {
-                    photoPicker
+                    VCamMainToolbarBackgroundColorPicker()
                 }
                 .environment(\.locale, locale)
             }
@@ -62,7 +52,7 @@ public struct VCamMainToolbar: View {
                         }
                     }
                 } content: {
-                    emojiPicker
+                    VCamMainToolbarEmojiPicker()
                 }
                 .environment(\.locale, locale)
                 .frame(width: 240)
@@ -75,7 +65,7 @@ public struct VCamMainToolbar: View {
             }
             .popover(isPresented: $isMotionPickerPopover) {
                 VCamPopoverContainerWithWindow(L10n.motion.key) {
-                    motionPicker
+                    VCamMainToolbarMotionPicker()
                 }
                 .environment(\.locale, locale)
                 .frame(width: 240)
@@ -88,7 +78,7 @@ public struct VCamMainToolbar: View {
             }
             .popover(isPresented: $isBlendShapePickerPopover) {
                 VCamPopoverContainerWithWindow(L10n.facialExpression.key) {
-                    blendShapePicker
+                    VCamMainToolbarBlendShapePicker()
                 }
                 .environment(\.locale, locale)
                 .frame(width: 280, height: 150)
@@ -115,13 +105,6 @@ public struct VCamMainToolbar: View {
     }
 }
 
-struct VCamMainToolbar_Previews: PreviewProvider {
-    static var previews: some View {
-        VCamMainToolbar(
-            photoPicker: VCamMainToolbarBackgroundColorPicker(backgroundColor: .constant(.red)),
-            emojiPicker: VCamMainToolbarEmojiPicker(),
-            motionPicker: VCamMainToolbarMotionPicker(motionHello: {}, motionBye: { .constant(false) }, motionJump: {}, motionYear: {}, motionWhat: {}, motionWin: {}, motionNod: { .constant(false) }, motionShakeHead: { .constant(false) }, motionShakeBody: { .constant(false) }, motionRun: { .constant(false) }),
-            blendShapePicker: VCamMainToolbarBlendShapePicker(blendShapes: [], selectedBlendShape: { .constant(nil) })
-        )
-    }
+#Preview {
+    VCamMainToolbar()
 }
diff --git a/app/xcode/Sources/VCamUI/Toolbar/VCamMainToolbarBackgroundColorPicker.swift b/app/xcode/Sources/VCamUI/Toolbar/VCamMainToolbarBackgroundColorPicker.swift
index 84bb885..62d3a7c 100644
--- a/app/xcode/Sources/VCamUI/Toolbar/VCamMainToolbarBackgroundColorPicker.swift
+++ b/app/xcode/Sources/VCamUI/Toolbar/VCamMainToolbarBackgroundColorPicker.swift
@@ -7,13 +7,16 @@
 
 import SwiftUI
 import VCamUIFoundation
+import VCamBridge
 
 public struct VCamMainToolbarBackgroundColorPicker: View {
-    public init(backgroundColor: Binding<Color>) {
-        self._backgroundColor = backgroundColor
+    public init(
+        backgroundColor: ExternalStateBinding<Color> = .init(.backgroundColor)
+    ) {
+        _backgroundColor = backgroundColor
     }
 
-    @Binding var backgroundColor: Color
+    @ExternalStateBinding(.backgroundColor) private var backgroundColor: Color
 
     public var body: some View {
         GroupBox {
@@ -29,8 +32,6 @@ public struct VCamMainToolbarBackgroundColorPicker: View {
     }
 }
 
-struct VCamMainToolbarPhotoPicker_Previews: PreviewProvider {
-    static var previews: some View {
-        VCamMainToolbarBackgroundColorPicker(backgroundColor: .constant(.red))
-    }
+#Preview {
+    VCamMainToolbarBackgroundColorPicker(backgroundColor: .constant(.red))
 }
diff --git a/app/xcode/Sources/VCamUI/Toolbar/VCamMainToolbarBlendShapePicker.swift b/app/xcode/Sources/VCamUI/Toolbar/VCamMainToolbarBlendShapePicker.swift
index 20ce290..47507d2 100644
--- a/app/xcode/Sources/VCamUI/Toolbar/VCamMainToolbarBlendShapePicker.swift
+++ b/app/xcode/Sources/VCamUI/Toolbar/VCamMainToolbarBlendShapePicker.swift
@@ -6,25 +6,24 @@
 //
 
 import SwiftUI
+import VCamBridge
 
 public struct VCamMainToolbarBlendShapePicker: View {
-    public init(blendShapes: [String], selectedBlendShape: () -> Binding<String?>) {
+    public init(blendShapes: [String] = UniBridge.cachedBlendShapes) {
         self.blendShapes = blendShapes
-        self._selectedBlendShape = selectedBlendShape()
     }
 
     let blendShapes: [String]
-    @Binding var selectedBlendShape: String?
-    @UniReload private var reload: Void
+    @ExternalStateBinding(.currentBlendShape) private var currentBlendShape
 
     public var body: some View {
         ScrollView(.vertical, showsIndicators: true) {
             GroupBox {
                 LazyVGrid(columns: [GridItem(.adaptive(minimum: 60))]) {
                     ForEach(blendShapes) { blendShape in
-                        HoverToggle(text: blendShape, isOn: $selectedBlendShape.map(
+                        HoverToggle(text: blendShape, isOn: $currentBlendShape.map(
                             get: { blendShape == $0 },
-                            set: { $0 ? blendShape : nil }
+                            set: { $0 ? blendShape : "" }
                         ))
                     }
                 }
@@ -73,8 +72,6 @@ extension VCamMainToolbarBlendShapePicker: MacWindow {
     }
 }
 
-struct VCamMainToolbarBlendShapePicker_Previews: PreviewProvider {
-    static var previews: some View {
-        VCamMainToolbarBlendShapePicker(blendShapes: ["natural", "joy"], selectedBlendShape: { .constant("joy") })
-    }
+#Preview {
+    VCamMainToolbarBlendShapePicker(blendShapes: ["natural", "joy"])
 }
diff --git a/app/xcode/Sources/VCamUI/Toolbar/VCamMainToolbarMotionPicker.swift b/app/xcode/Sources/VCamUI/Toolbar/VCamMainToolbarMotionPicker.swift
index 32c0efa..9283d77 100644
--- a/app/xcode/Sources/VCamUI/Toolbar/VCamMainToolbarMotionPicker.swift
+++ b/app/xcode/Sources/VCamUI/Toolbar/VCamMainToolbarMotionPicker.swift
@@ -6,31 +6,21 @@
 //
 
 import SwiftUI
+import VCamBridge
 
 public struct VCamMainToolbarMotionPicker: View {
-    public init(motionHello: @escaping () -> Void, motionBye: @escaping () -> Binding<Bool>, motionJump: @escaping () -> Void, motionYear: @escaping () -> Void, motionWhat: @escaping () -> Void, motionWin: @escaping () -> Void, motionNod: @escaping () -> Binding<Bool>, motionShakeHead: @escaping () -> Binding<Bool>, motionShakeBody: @escaping () -> Binding<Bool>, motionRun: @escaping () -> Binding<Bool>) {
-        self.motionHello = motionHello
-        self.motionBye = motionBye
-        self.motionJump = motionJump
-        self.motionYear = motionYear
-        self.motionWhat = motionWhat
-        self.motionWin = motionWin
-        self.motionNod = motionNod
-        self.motionShakeHead = motionShakeHead
-        self.motionShakeBody = motionShakeBody
-        self.motionRun = motionRun
-    }
+    public init() {}
 
-    let motionHello: () -> Void
-    let motionBye: () -> Binding<Bool>
-    let motionJump: () -> Void
-    let motionYear: () -> Void
-    let motionWhat: () -> Void
-    let motionWin: () -> Void
-    let motionNod: () -> Binding<Bool>
-    let motionShakeHead: () -> Binding<Bool>
-    let motionShakeBody: () -> Binding<Bool>
-    let motionRun: () -> Binding<Bool>
+    @UniAction(.motionHello) var motionHello
+    @ExternalStateBinding(.motionBye) var motionBye
+    @UniAction(.motionJump) var motionJump
+    @UniAction(.motionYear) var motionYear
+    @UniAction(.motionWhat) var motionWhat
+    @UniAction(.motionWin) var motionWin
+    @ExternalStateBinding(.motionNod) var motionNod
+    @ExternalStateBinding(.motionShakeHead) var motionShakeHead
+    @ExternalStateBinding(.motionShakeBody) var motionShakeBody
+    @ExternalStateBinding(.motionRun) var motionRun
 
     @Environment(\.nsWindow) var nsWindow
     @UniReload private var reload: Void
@@ -38,17 +28,17 @@ public struct VCamMainToolbarMotionPicker: View {
     public var body: some View {
         GroupBox {
             LazyVGrid(columns: [GridItem(.adaptive(minimum: 80))], spacing: 2) {
-                button(key: L10n.hi.key, action: motionHello)
-                toggle(key: L10n.bye.key, isOn: motionBye())
-                button(key: L10n.jump.key, action: motionJump)
-                button(key: L10n.cheer.key, action: motionYear)
-                button(key: L10n.what.key, action: motionWhat)
+                button(key: L10n.hi.key, action: { motionHello() })
+                toggle(key: L10n.bye.key, isOn: $motionBye.workaround())
+                button(key: L10n.jump.key, action: { motionJump() })
+                button(key: L10n.cheer.key, action: { motionYear() })
+                button(key: L10n.what.key, action: { motionWhat() })
                 Group {
-                    button(key: L10n.pose.key, action: motionWin)
-                    toggle(key: L10n.nod.key, isOn: motionNod())
-                    toggle(key: L10n.no.key, isOn: motionShakeHead())
-                    toggle(key: L10n.shudder.key, isOn: motionShakeBody())
-                    toggle(key: L10n.run.key, isOn: motionRun())
+                    button(key: L10n.pose.key, action: { motionWin() })
+                    toggle(key: L10n.nod.key, isOn: $motionNod.workaround())
+                    toggle(key: L10n.no.key, isOn: $motionShakeHead.workaround())
+                    toggle(key: L10n.shudder.key, isOn: $motionShakeBody.workaround())
+                    toggle(key: L10n.run.key, isOn: $motionRun.workaround())
                 }
             }
         }
@@ -100,9 +90,20 @@ extension VCamMainToolbarMotionPicker: MacWindow {
     }
 }
 
-struct VCamMainToolbarMotionPicker_Previews: PreviewProvider {
-    static var previews: some View {
-        VCamMainToolbarMotionPicker(motionHello: {}, motionBye: { .constant(false) }, motionJump: {}, motionYear: {}, motionWhat: {}, motionWin: {}, motionNod: { .constant(false) }, motionShakeHead: { .constant(false) }, motionShakeBody: { .constant(false) }, motionRun: { .constant(false) })
-            .frame(width: 240)
+private extension Binding {
+    // The state updates with a slight delay, so wait a bit before refreshing the UI
+    func workaround() -> Self {
+        map(get: { $0 }, set: {
+            Task {
+                try? await Task.sleep(nanoseconds: NSEC_PER_MSEC * 300)
+                UniReload.Reloader.shared.objectWillChange.send()
+            }
+            return $0
+        })
     }
 }
+
+#Preview {
+    VCamMainToolbarMotionPicker()
+        .frame(width: 240)
+}