📦 deps(thirdparty): update snapshots

2026-07-01 16:02:41 +00:00
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+# SwiftUI Sheet, Navigation & Inspector Patterns Reference
+
+## Table of Contents
+
+- [Sheet Patterns](#sheet-patterns)
+- [Navigation Patterns](#navigation-patterns)
+- [Multi-Column Navigation with NavigationSplitView](#multi-column-navigation-with-navigationsplitview)
+- [Inspector](#inspector)
+- [Presentation Modifiers](#presentation-modifiers)
+- [Summary Checklist](#summary-checklist)
+
+## Sheet Patterns
+
+### Item-Driven Sheets (Preferred)
+
+**Use `.sheet(item:)` instead of `.sheet(isPresented:)` when presenting model-based content.**
+
+```swift
+// Good - item-driven
+@State private var selectedItem: Item?
+
+var body: some View {
+    List(items) { item in
+        Button(item.name) {
+            selectedItem = item
+        }
+    }
+    .sheet(item: $selectedItem) { item in
+        ItemDetailSheet(item: item)
+    }
+}
+
+// Avoid - boolean flag requires separate state
+@State private var showSheet = false
+@State private var selectedItem: Item?
+
+var body: some View {
+    List(items) { item in
+        Button(item.name) {
+            selectedItem = item
+            showSheet = true
+        }
+    }
+    .sheet(isPresented: $showSheet) {
+        if let selectedItem {
+            ItemDetailSheet(item: selectedItem)
+        }
+    }
+}
+```
+
+**Why**: `.sheet(item:)` automatically handles presentation state and avoids optional unwrapping in the sheet body.
+
+### Sheets Own Their Actions
+
+**Sheets should handle their own dismiss and actions internally** using `@Environment(\.dismiss)`. Avoid passing `onSave`/`onCancel` closures from the parent -- it creates callback prop-drilling and reduces reusability.
+
+```swift
+struct EditItemSheet: View {
+    @Environment(\.dismiss) private var dismiss
+    let item: Item
+    @State private var name: String
+
+    init(item: Item) {
+        self.item = item
+        _name = State(initialValue: item.name)
+    }
+
+    var body: some View {
+        NavigationStack {
+            Form { TextField("Name", text: $name) }
+                .navigationTitle("Edit Item")
+                .toolbar {
+                    ToolbarItem(placement: .cancellationAction) { Button("Cancel") { dismiss() } }
+                    ToolbarItem(placement: .confirmationAction) { Button("Save") { /* save and dismiss */ } }
+                }
+        }
+    }
+}
+```
+
+### Enum-Based Sheet Management
+
+When presenting multiple different sheets, use an `Identifiable` enum with `.sheet(item:)` instead of multiple boolean state properties:
+
+```swift
+struct ArticlesView: View {
+    enum Sheet: Identifiable {
+        case add, edit(Article), categories
+        var id: String {
+            switch self {
+            case .add: "add"
+            case .edit(let a): "edit-\(a.id)"
+            case .categories: "categories"
+            }
+        }
+    }
+
+    @State private var presentedSheet: Sheet?
+
+    var body: some View {
+        List { /* ... */ }
+            .toolbar {
+                Button("Add") { presentedSheet = .add }
+            }
+            .sheet(item: $presentedSheet) { sheet in
+                switch sheet {
+                case .add: AddArticleView()
+                case .edit(let article): EditArticleView(article: article)
+                case .categories: CategoriesView()
+                }
+            }
+    }
+}
+```
+
+**Why**: A single `@State` property and one `.sheet(item:)` modifier replaces N boolean properties and N sheet modifiers, improving readability and preventing only-one-sheet-at-a-time conflicts.
+
+## Navigation Patterns
+
+### Type-Safe Navigation with NavigationStack
+
+```swift
+struct ContentView: View {
+    var body: some View {
+        NavigationStack {
+            List {
+                NavigationLink("Profile", value: Route.profile)
+                NavigationLink("Settings", value: Route.settings)
+            }
+            .navigationDestination(for: Route.self) { route in
+                switch route {
+                case .profile:
+                    ProfileView()
+                case .settings:
+                    SettingsView()
+                }
+            }
+        }
+    }
+}
+
+enum Route: Hashable {
+    case profile
+    case settings
+}
+```
+
+### Programmatic Navigation
+
+```swift
+struct ContentView: View {
+    @State private var navigationPath = NavigationPath()
+
+    var body: some View {
+        NavigationStack(path: $navigationPath) {
+            List {
+                Button("Go to Detail") {
+                    navigationPath.append(DetailRoute.item(id: 1))
+                }
+            }
+            .navigationDestination(for: DetailRoute.self) { route in
+                switch route {
+                case .item(let id):
+                    ItemDetailView(id: id)
+                }
+            }
+        }
+    }
+}
+
+enum DetailRoute: Hashable {
+    case item(id: Int)
+}
+```
+
+## Multi-Column Navigation with NavigationSplitView
+
+### Two-Column Layout
+
+Use `NavigationSplitView` for sidebar-driven navigation. Available on iOS 16+, macOS 13+, tvOS 16+, watchOS 9+.
+
+```swift
+struct ContentView: View {
+    @State private var selectedItem: Item.ID?
+
+    var body: some View {
+        NavigationSplitView {
+            List(items, selection: $selectedItem) { item in
+                Text(item.name)
+            }
+            .navigationTitle("Items")
+        } detail: {
+            if let selectedItem, let item = items.first(where: { $0.id == selectedItem }) {
+                ItemDetailView(item: item)
+            } else {
+                ContentUnavailableView("Select an Item", systemImage: "doc")
+            }
+        }
+    }
+}
+```
+
+### Three-Column Layout
+
+```swift
+struct ContentView: View {
+    @State private var departmentId: Department.ID?
+    @State private var employeeIds = Set<Employee.ID>()
+
+    var body: some View {
+        NavigationSplitView {
+            List(model.departments, selection: $departmentId) { dept in
+                Text(dept.name)
+            }
+        } content: {
+            if let department = model.department(id: departmentId) {
+                List(department.employees, selection: $employeeIds) { emp in
+                    Text(emp.name)
+                }
+            } else {
+                Text("Select a department")
+            }
+        } detail: {
+            EmployeeDetails(for: employeeIds)
+        }
+    }
+}
+```
+
+### Configuration
+
+- **Column visibility**: `NavigationSplitView(columnVisibility: $visibility)` with `NavigationSplitViewVisibility` (`.detailOnly`, `.doubleColumn`, `.all`)
+- **Column widths**: `.navigationSplitViewColumnWidth(min:ideal:max:)` on each column
+- **Compact column**: `NavigationSplitView(preferredCompactColumn: $column)` to control which column shows on narrow devices
+- **Style**: `.navigationSplitViewStyle(.balanced)` or `.prominentDetail` (default)
+
+### Platform Behavior
+
+| Platform | Behavior |
+|----------|----------|
+| **macOS** | Columns always visible side-by-side; sidebar has translucent material; variable-width column resizing by dragging |
+| **iPadOS (regular)** | Sidebar can overlay or push detail; supports column visibility toggle via toolbar button |
+| **iOS / iPadOS (compact)** | Collapses into a single `NavigationStack`; sidebar items show disclosure chevrons; back button navigates between columns |
+| **iPhone (all sizes)** | Always collapsed into a stack; sidebar appears as the root list; selections push detail onto the stack |
+| **watchOS / tvOS** | Collapses into a single stack |
+
+## Inspector
+
+> **Availability:** iOS 17.0+, macOS 14.0+
+
+A trailing-edge panel for supplementary information.
+
+On wider size classes (macOS, iPad landscape), it appears as a **trailing column**. On compact size classes (iPhone), it **adapts to a sheet** automatically.
+
+### Basic Inspector
+
+```swift
+struct ShapeEditor: View {
+    @State private var showInspector = false
+
+    var body: some View {
+        MyEditorView()
+            .inspector(isPresented: $showInspector) {
+                InspectorContent()
+            }
+            .toolbar {
+                ToolbarItem {
+                    Button {
+                        showInspector.toggle()
+                    } label: {
+                        Label("Inspector", systemImage: "info.circle")
+                    }
+                }
+            }
+    }
+}
+```
+
+### Inspector with Column Width
+
+```swift
+MyEditorView()
+    .inspector(isPresented: $showInspector) {
+        InspectorContent()
+            .inspectorColumnWidth(min: 200, ideal: 250, max: 400)
+    }
+```
+
+### Inspector with Fixed Width
+
+```swift
+MyEditorView()
+    .inspector(isPresented: $showInspector) {
+        InspectorContent()
+            .inspectorColumnWidth(300)
+    }
+```
+
+### Platform Behavior
+
+| Platform | Behavior |
+|----------|----------|
+| **macOS** | Trailing-edge sidebar panel; resizable by dragging edge; integrates with window toolbar |
+| **iPadOS (regular)** | Trailing column alongside content; toggleable via toolbar button |
+| **iOS / iPadOS (compact)** | Adapts to a sheet presentation; swipe-to-dismiss supported |
+| **iPhone (all sizes)** | Always presented as a sheet (no trailing column); dismiss via swipe or button |
+
+> **Tip:** Use `InspectorCommands` in your app's `.commands` to include the default inspector toggle keyboard shortcut.
+
+## Presentation Modifiers
+
+### Full Screen Cover
+
+```swift
+struct ContentView: View {
+    @State private var showFullScreen = false
+
+    var body: some View {
+        Button("Show Full Screen") {
+            showFullScreen = true
+        }
+        .fullScreenCover(isPresented: $showFullScreen) {
+            FullScreenView()
+        }
+    }
+}
+```
+
+### Popover
+
+```swift
+struct ContentView: View {
+    @State private var showPopover = false
+
+    var body: some View {
+        Button("Show Popover") {
+            showPopover = true
+        }
+        .popover(isPresented: $showPopover) {
+            PopoverContentView()
+                .presentationCompactAdaptation(.popover)  // Don't adapt to sheet on iPhone
+        }
+    }
+}
+```
+
+For `alert` and `confirmationDialog` API patterns, see `latest-apis.md`.
+
+## Summary Checklist
+
+- [ ] Use `.sheet(item:)` for model-based sheets
+- [ ] Sheets own their actions and dismiss internally
+- [ ] Use `NavigationStack` with `navigationDestination(for:)` for type-safe navigation
+- [ ] Use `NavigationPath` for programmatic navigation
+- [ ] Use `NavigationSplitView` for sidebar-driven multi-column layouts
+- [ ] Use `Inspector` for trailing-edge supplementary panels
+- [ ] Set column widths with `navigationSplitViewColumnWidth(min:ideal:max:)` or `inspectorColumnWidth(min:ideal:max:)`
+- [ ] Use appropriate presentation modifiers (sheet, fullScreenCover, popover)
+- [ ] Alerts and confirmation dialogs use modern API with actions
+- [ ] Avoid passing dismiss/save callbacks to sheets
+- [ ] Use enum-based `Identifiable` type with `.sheet(item:)` when presenting multiple sheets
+- [ ] Navigation state can be saved/restored when needed