Nested ZStack modifiers in progress/empty modifiers (#876)

Merge into a single modifier because they are used together.

Passepartout/Library/Sources/AppUIMain/Views/App/ProfileContainerView.swift

@@ -114,8 +114,11 @@ private struct ContainerModifier: ViewModifier {
     func body(content: Content) -> some View {
         debugChanges()
         return content
-            .themeProgress(if: !profileManager.isReady)
+            .themeProgress(
-            .themeEmptyContent(if: profileManager.isReady && !profileManager.hasProfiles, message: Strings.Views.Profiles.Folders.noProfiles)
+                if: !profileManager.isReady,
+                isEmpty: !profileManager.hasProfiles,
+                emptyMessage: Strings.Views.Profiles.Folders.noProfiles
+            )
             .searchable(text: $search)
             .onChange(of: search) {
                 profileManager.search(byName: $0)

Passepartout/Library/Sources/AppUIMain/Views/Migration/MigrateView.swift

@@ -65,8 +65,11 @@ struct MigrateView: View {
             .disabled(model.step != .fetched)
         }
         .themeForm()
-        .themeProgress(if: model.step == .fetching)
+        .themeProgress(
-        .themeEmptyContent(if: model.step == .fetched && model.profiles.isEmpty, message: "Nothing to migrate")
+            if: model.step == .fetching,
+            isEmpty: model.profiles.isEmpty,
+            emptyMessage: "Nothing to migrate"
+        )
         .themeAnimation(on: model, category: .profiles)
         .navigationTitle(title)
         .toolbar(content: toolbarContent)

Passepartout/Library/Sources/UILibrary/Extensions/View+Environment.swift

@@ -35,6 +35,9 @@ extension View {
     }
 
     public func withMockEnvironment() -> some View {
-        withEnvironment(from: .mock, theme: Theme())
+        task {
+            try? await AppContext.mock.profileManager.observeLocal()
+        }
+        .withEnvironment(from: .mock, theme: Theme())
     }
 }

Passepartout/Library/Sources/UILibrary/Theme/UI/Theme+Modifiers.swift

@@ -163,8 +163,8 @@ extension View {
         modifier(ThemeProgressViewModifier(isProgressing: isProgressing))
     }
 
-    public func themeEmptyContent(if isEmpty: Bool, message: String) -> some View {
+    public func themeProgress(if isProgressing: Bool, isEmpty: Bool, emptyMessage: String) -> some View {
-        modifier(ThemeEmptyContentModifier(isEmpty: isEmpty, message: message))
+        modifier(ThemeProgressViewModifier(isProgressing: isProgressing, isEmpty: isEmpty, emptyMessage: emptyMessage))
     }
 
 #if !os(tvOS)
@@ -370,31 +370,20 @@ struct ThemeAnimationModifier<T>: ViewModifier where T: Equatable {
 struct ThemeProgressViewModifier: ViewModifier {
     let isProgressing: Bool
 
+    var isEmpty: Bool?
+
+    var emptyMessage: String?
+
     func body(content: Content) -> some View {
         ZStack {
+            content
+                .opaque(!isProgressing && isEmpty != true)
+
             if isProgressing {
                 ThemeProgressView()
-            }
+            } else if let isEmpty, let emptyMessage, isEmpty {
-            content
+                Text(emptyMessage)
-                .opaque(!isProgressing)
-        }
-    }
-}
-
-struct ThemeEmptyContentModifier: ViewModifier {
-    let isEmpty: Bool
-
-    let message: String
-
-    func body(content: Content) -> some View {
-        ZStack {
-            content
-                .opaque(!isEmpty)
-
-            if isEmpty {
-                Text(message)
                     .themeEmptyMessage()
-                    .opaque(isEmpty)
             }
         }
     }