Add example project

Author: Paul Schmiedmayer

.github/workflows/build-and-test.yml

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+{
+  "colors" : [
+    {
+      "idiom" : "universal"
+    }
+  ],
+  "info" : {
+    "author" : "xcode",
+    "version" : 1
+  }
+}

.github/workflows/docs.yml

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+{
+  "images" : [
+    {
+      "idiom" : "iphone",
+      "scale" : "2x",
+      "size" : "20x20"
+    },
+    {
+      "idiom" : "iphone",
+      "scale" : "3x",
+      "size" : "20x20"
+    },
+    {
+      "idiom" : "iphone",
+      "scale" : "2x",
+      "size" : "29x29"
+    },
+    {
+      "idiom" : "iphone",
+      "scale" : "3x",
+      "size" : "29x29"
+    },
+    {
+      "idiom" : "iphone",
+      "scale" : "2x",
+      "size" : "40x40"
+    },
+    {
+      "idiom" : "iphone",
+      "scale" : "3x",
+      "size" : "40x40"
+    },
+    {
+      "idiom" : "iphone",
+      "scale" : "2x",
+      "size" : "60x60"
+    },
+    {
+      "idiom" : "iphone",
+      "scale" : "3x",
+      "size" : "60x60"
+    },
+    {
+      "idiom" : "ipad",
+      "scale" : "1x",
+      "size" : "20x20"
+    },
+    {
+      "idiom" : "ipad",
+      "scale" : "2x",
+      "size" : "20x20"
+    },
+    {
+      "idiom" : "ipad",
+      "scale" : "1x",
+      "size" : "29x29"
+    },
+    {
+      "idiom" : "ipad",
+      "scale" : "2x",
+      "size" : "29x29"
+    },
+    {
+      "idiom" : "ipad",
+      "scale" : "1x",
+      "size" : "40x40"
+    },
+    {
+      "idiom" : "ipad",
+      "scale" : "2x",
+      "size" : "40x40"
+    },
+    {
+      "idiom" : "ipad",
+      "scale" : "1x",
+      "size" : "76x76"
+    },
+    {
+      "idiom" : "ipad",
+      "scale" : "2x",
+      "size" : "76x76"
+    },
+    {
+      "idiom" : "ipad",
+      "scale" : "2x",
+      "size" : "83.5x83.5"
+    },
+    {
+      "idiom" : "ios-marketing",
+      "scale" : "1x",
+      "size" : "1024x1024"
+    }
+  ],
+  "info" : {
+    "author" : "xcode",
+    "version" : 1
+  }
+}

.github/workflows/spm-update.yml

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+{
+  "info" : {
+    "author" : "xcode",
+    "version" : 1
+  }
+}

.jazzy.yml

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+import SwiftUI
+
+
+struct ConnectView: View {
+    // MARK: Stored Properties
+
+    var action: (URL) -> Void
+
+    @State private var url = ""
+
+    // MARK: Computed Properties
+
+    var body: some View {
+        NavigationView {
+            VStack(spacing: 32) {
+                TextField("URL", text: $url)
+                Button("Connect", action: load)
+            }
+            .padding(32)
+            .navigationTitle("Select Server")
+        }
+    }
+
+    // MARK: Actions
+
+    private func load() {
+        if let url = URL(string: self.url) {
+            action(url)
+        }
+    }
+}

Client/PresenterExample/Assets.xcassets/AccentColor.colorset/Contents.json

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+import Presenter
+import SwiftUI
+
+
+struct ContentView: SwiftUI.View {
+    // MARK: Stored Properties
+
+    @ObservedObject var model: Model
+
+    @SwiftUI.State private var url: URL?
+    @SwiftUI.State private var error: String?
+    @SwiftUI.State private var view: AnyView?
+
+    // MARK: Computed Properties
+
+    var body: some SwiftUI.View {
+        if let view = view {
+            view.environmentObject(model)
+        } else if let error = error {
+            ErrorView(error: error) {
+                self.view = nil
+                self.error = nil
+                self.url = nil
+            }
+        } else if let url = url {
+            LoadingView(
+                url: url,
+                view: $view,
+                error: $error
+            )
+        } else {
+            ConnectView { url in
+                self.url = url
+            }
+        }
+    }
+}
+
+
+struct ContentView_Previews: PreviewProvider {
+    static var previews: some SwiftUI.View {
+        ContentView(model: .init())
+    }
+}

Client/PresenterExample/Assets.xcassets/AppIcon.appiconset/Contents.json

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+import SwiftUI
+
+
+struct ErrorView: View {
+    // MARK: Stored Properties
+
+    var error: String
+    var action: () -> Void
+
+    // MARK: Computed Properties
+
+    var body: some View {
+        NavigationView {
+            VStack(spacing: 32) {
+                Text(error)
+                Button("Try again", action: action)
+            }
+            .padding(32)
+            .navigationTitle("Error")
+        }
+    }
+}