Copy over all Phase 2 files

Sources/AdwaitaTemplate.swift

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+// The Swift Programming Language
+// https://docs.swift.org/swift-book
+
+import Adwaita
+
+@main
+struct AdwaitaTemplate: App {
+    let app = AdwaitaApp(id: "io.github.AparokshaUI.AdwaitaTemplate")
+
+    var scene: Scene {
+        Window(id: "main") { window in
+            VStack(spacing: 8) {
+                Text("Calculations here...")
+                    .selectable(false)
+                VStack(spacing: 8) {
+                    HStack(spacing: 8) {
+                        Button("AC") {}
+                            .keyboardShortcut("c", app: app)
+                            .hexpand()
+                            .destructive()
+                        Button("") {}
+                            .hexpand()
+                            .flat()
+                        Button("%") {}
+                            .keyboardShortcut("percent", app: app)
+                            .hexpand()
+                        Button("/") {}
+                            .keyboardShortcut("slash", app: app)
+                            .hexpand()
+                    }
+                    .vexpand()
+                    HStack(spacing: 8) {
+                        Button("7") {}
+                            .keyboardShortcut("7", app: app)
+                            .hexpand()
+                        Button("8") {}
+                            .keyboardShortcut("8", app: app)
+                            .hexpand()
+                        Button("9") {}
+                            .keyboardShortcut("9", app: app)
+                            .hexpand()
+                        Button("*") {}
+                            .keyboardShortcut("asterisk", app: app)
+                            .hexpand()
+                    }
+                    .vexpand()
+                    HStack(spacing: 8) {
+                        Button("4") {}
+                            .keyboardShortcut("4", app: app)
+                            .hexpand()
+                        Button("5") {}
+                            .keyboardShortcut("5", app: app)
+                            .hexpand()
+                        Button("6") {}
+                            .keyboardShortcut("6", app: app)
+                            .hexpand()
+                        Button("-") {}
+                            .keyboardShortcut("minus", app: app)
+                            .hexpand()
+                    }
+                    .vexpand()
+                    HStack(spacing: 8) {
+                        Button("1") {}
+                            .keyboardShortcut("1", app: app)
+                            .hexpand()
+                        Button("2") {}
+                            .keyboardShortcut("2", app: app)
+                            .hexpand()
+                        Button("3") {}
+                            .keyboardShortcut("3", app: app)
+                            .hexpand()
+                        Button("+") {}
+                            .keyboardShortcut("plus", app: app)
+                            .hexpand()
+                    }
+                    .vexpand()
+                    HStack(spacing: 8) {
+                        Button("0") {}
+                            .keyboardShortcut("0", app: app)
+                            .hexpand()
+                        Button("") {}
+                            .hexpand()
+                            .flat()
+                        Button(",") {}
+                            .keyboardShortcut("comma", app: app)
+                            .hexpand()
+                        Button("=") {}
+                            .keyboardShortcut("equal", app: app)
+                            .hexpand()
+                    }
+                    .vexpand()
+                }
+            }
+            .padding()
+            .topToolbar {
+                ToolbarView(app: app, window: window)
+            }
+        }
+    }
+
+}

Sources/Localized.yml

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+default: en
+
+helloWorld:
+    en: Hello, world!
+    de: Hallo, Welt!
+
+newWindow:
+    en: New Window
+    de: Neues Fenster
+
+closeWindow:
+    en: Close Window
+    de: Fenster schliessen
+
+about:
+    en: About AdwaitaTemplate
+    de: Info zu AdwaitaTemplate
+
+mainMenu:
+    en: Main Menu
+    de: Hauptmenü

Sources/ToolbarView.swift

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+import Adwaita
+
+struct ToolbarView: View {
+
+    @State private var about = false
+    var app: AdwaitaApp
+    var window: AdwaitaWindow
+
+    var view: Body {
+        HeaderBar.end {
+            Menu(icon: .default(icon: .openMenu)) {
+                MenuButton(Loc.newWindow, window: false) {
+                    app.addWindow("main")
+                }
+                .keyboardShortcut("n".ctrl())
+                MenuButton(Loc.closeWindow) {
+                    window.close()
+                }
+                .keyboardShortcut("w".ctrl())
+                MenuSection {
+                    MenuButton(Loc.about, window: false) {
+                        about = true
+                    }
+                }
+            }
+            .primary()
+            .tooltip(Loc.mainMenu)
+            .aboutDialog(
+                visible: $about,
+                app: "AdwaitaTemplate",
+                developer: "david-swift",
+                version: "dev",
+                icon: .custom(name: "io.github.AparokshaUI.AdwaitaTemplate"),
+                website: .init(string: "https://git.aparoksha.dev/aparoksha/adwaita-template")!,
+                issues: .init(string: "https://git.aparoksha.dev/aparoksha/adwaita-template/issues")!
+            )
+        }
+    }
+
+}