Add Example App

Example/CodeEditTextViewExample/CodeEditTextViewExample.xcodeproj/project.xcworkspace/xcshareddata/swiftpm/Package.resolved

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+{
+  "pins" : [
+    {
+      "identity" : "rearrange",
+      "kind" : "remoteSourceControl",
+      "location" : "https://github.com/ChimeHQ/Rearrange",
+      "state" : {
+        "revision" : "5ff7f3363f7a08f77e0d761e38e6add31c2136e1",
+        "version" : "1.8.1"
+      }
+    },
+    {
+      "identity" : "swift-collections",
+      "kind" : "remoteSourceControl",
+      "location" : "https://github.com/apple/swift-collections.git",
+      "state" : {
+        "revision" : "671108c96644956dddcd89dd59c203dcdb36cec7",
+        "version" : "1.1.4"
+      }
+    },
+    {
+      "identity" : "swiftlintplugin",
+      "kind" : "remoteSourceControl",
+      "location" : "https://github.com/lukepistrol/SwiftLintPlugin",
+      "state" : {
+        "revision" : "87454f5c9ff4d644086aec2a0df1ffba678e7f3c",
+        "version" : "0.57.1"
+      }
+    },
+    {
+      "identity" : "textstory",
+      "kind" : "remoteSourceControl",
+      "location" : "https://github.com/ChimeHQ/TextStory",
+      "state" : {
+        "revision" : "8dc9148b46fcf93b08ea9d4ef9bdb5e4f700e008",
+        "version" : "0.9.0"
+      }
+    }
+  ],
+  "version" : 2
+}

Example/CodeEditTextViewExample/CodeEditTextViewExample/Assets.xcassets/AccentColor.colorset/Contents.json

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

Example/CodeEditTextViewExample/CodeEditTextViewExample/Assets.xcassets/AppIcon.appiconset/Contents.json

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+{
+  "images" : [
+    {
+      "idiom" : "universal",
+      "platform" : "ios",
+      "size" : "1024x1024"
+    },
+    {
+      "appearances" : [
+        {
+          "appearance" : "luminosity",
+          "value" : "dark"
+        }
+      ],
+      "idiom" : "universal",
+      "platform" : "ios",
+      "size" : "1024x1024"
+    },
+    {
+      "appearances" : [
+        {
+          "appearance" : "luminosity",
+          "value" : "tinted"
+        }
+      ],
+      "idiom" : "universal",
+      "platform" : "ios",
+      "size" : "1024x1024"
+    }
+  ],
+  "info" : {
+    "author" : "xcode",
+    "version" : 1
+  }
+}

Example/CodeEditTextViewExample/CodeEditTextViewExample/Assets.xcassets/Contents.json

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

Example/CodeEditTextViewExample/CodeEditTextViewExample/CodeEditTextViewExample.entitlements

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+<?xml version="1.0" encoding="UTF-8"?>
+<!DOCTYPE plist PUBLIC "-//Apple//DTD PLIST 1.0//EN" "http://www.apple.com/DTDs/PropertyList-1.0.dtd">
+<plist version="1.0">
+<dict>
+	<key>com.apple.security.app-sandbox</key>
+	<true/>
+	<key>com.apple.security.files.user-selected.read-write</key>
+	<true/>
+</dict>
+</plist>

Example/CodeEditTextViewExample/CodeEditTextViewExample/CodeEditTextViewExampleApp.swift

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+//
+//  CodeEditTextViewExampleApp.swift
+//  CodeEditTextViewExample
+//
+//  Created by Khan Winter on 1/9/25.
+//
+
+import SwiftUI
+
+@main
+struct CodeEditTextViewExampleApp: App {
+    var body: some Scene {
+        DocumentGroup(newDocument: CodeEditTextViewExampleDocument()) { file in
+            ContentView(document: file.$document)
+        }
+    }
+}

Example/CodeEditTextViewExample/CodeEditTextViewExample/Documents/CodeEditTextViewExampleDocument.swift

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+//
+//  CodeEditTextViewExampleDocument.swift
+//  CodeEditTextViewExample
+//
+//  Created by Khan Winter on 1/9/25.
+//
+
+import SwiftUI
+import UniformTypeIdentifiers
+
+struct CodeEditTextViewExampleDocument: FileDocument {
+    var text: String
+
+    init(text: String = "") {
+        self.text = text
+    }
+
+    static var readableContentTypes: [UTType] {
+        [
+            .item
+        ]
+    }
+
+    init(configuration: ReadConfiguration) throws {
+        guard let data = configuration.file.regularFileContents else {
+            throw CocoaError(.fileReadCorruptFile)
+        }
+        text = String(decoding: data, as: UTF8.self)
+    }
+
+    func fileWrapper(configuration: WriteConfiguration) throws -> FileWrapper {
+        let data = Data(text.utf8)
+        return .init(regularFileWithContents: data)
+    }
+}

Example/CodeEditTextViewExample/CodeEditTextViewExample/Info.plist

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+<?xml version="1.0" encoding="UTF-8"?>
+<!DOCTYPE plist PUBLIC "-//Apple//DTD PLIST 1.0//EN" "http://www.apple.com/DTDs/PropertyList-1.0.dtd">
+<plist version="1.0">
+<dict>
+	<key>CFBundleDocumentTypes</key>
+	<array>
+		<dict>
+			<key>CFBundleTypeRole</key>
+			<string>Editor</string>
+			<key>LSItemContentTypes</key>
+			<array>
+				<string>com.example.plain-text</string>
+			</array>
+			<key>NSUbiquitousDocumentUserActivityType</key>
+			<string>$(PRODUCT_BUNDLE_IDENTIFIER).exampledocument</string>
+		</dict>
+	</array>
+	<key>UTImportedTypeDeclarations</key>
+	<array>
+		<dict>
+			<key>UTTypeConformsTo</key>
+			<array>
+				<string>public.plain-text</string>
+			</array>
+			<key>UTTypeDescription</key>
+			<string>Example Text</string>
+			<key>UTTypeIdentifier</key>
+			<string>com.example.plain-text</string>
+			<key>UTTypeTagSpecification</key>
+			<dict>
+				<key>public.filename-extension</key>
+				<array>
+					<string>exampletext</string>
+				</array>
+			</dict>
+		</dict>
+	</array>
+</dict>
+</plist>

Example/CodeEditTextViewExample/CodeEditTextViewExample/Views/ContentView.swift

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+//
+//  ContentView.swift
+//  CodeEditTextViewExample
+//
+//  Created by Khan Winter on 1/9/25.
+//
+
+import SwiftUI
+
+struct ContentView: View {
+    @Binding var document: CodeEditTextViewExampleDocument
+
+    var body: some View {
+        SwiftUITextView(text: $document.text)
+    }
+}
+
+#Preview {
+    ContentView(document: .constant(CodeEditTextViewExampleDocument()))
+}

Example/CodeEditTextViewExample/CodeEditTextViewExample/Views/SwiftUITextView.swift

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+//
+//  SwiftUITextView.swift
+//  CodeEditTextViewExample
+//
+//  Created by Khan Winter on 1/9/25.
+//
+
+import SwiftUI
+import AppKit
+import CodeEditTextView
+
+struct SwiftUITextView: NSViewControllerRepresentable {
+    @Binding var text: String
+
+    func makeNSViewController(context: Context) -> TextViewController {
+        let controller = TextViewController(string: text)
+        context.coordinator.controller = controller
+        return controller
+    }
+
+    func updateNSViewController(_ nsViewController: TextViewController, context: Context) {
+        // Do nothing, our binding has to be a one-way binding
+    }
+
+    func makeCoordinator() -> Coordinator {
+        Coordinator(text: $text)
+    }
+
+    @MainActor
+    public class Coordinator: NSObject {
+        weak var controller: TextViewController?
+        var text: Binding<String>
+
+        init(text: Binding<String>) {
+            self.text = text
+            super.init()
+
+            NotificationCenter.default.addObserver(
+                self,
+                selector: #selector(textViewDidChangeText(_:)),
+                name: TextView.textDidChangeNotification,
+                object: nil
+            )
+        }
+
+        @objc func textViewDidChangeText(_ notification: Notification) {
+            guard let textView = notification.object as? TextView,
+                  let controller,
+                  controller.textView === textView else {
+                return
+            }
+            text.wrappedValue = textView.string
+        }
+
+        deinit {
+            NotificationCenter.default.removeObserver(self)
+        }
+    }
+}

Example/CodeEditTextViewExample/CodeEditTextViewExample/Views/TextViewController.swift

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+//
+//  TextViewController.swift
+//  CodeEditTextViewExample
+//
+//  Created by Khan Winter on 1/9/25.
+//
+
+import AppKit
+import CodeEditTextView
+
+class TextViewController: NSViewController {
+    var scrollView: NSScrollView!
+    var textView: TextView!
+
+    init(string: String) {
+        textView = TextView(string: string)
+        super.init(nibName: nil, bundle: nil)
+    }
+
+    required init?(coder: NSCoder) {
+        fatalError("init(coder:) has not been implemented")
+    }
+
+    override func loadView() {
+        scrollView = NSScrollView()
+        textView.translatesAutoresizingMaskIntoConstraints = false
+
+        scrollView.translatesAutoresizingMaskIntoConstraints = false
+        scrollView.documentView = textView
+        scrollView.contentView.postsFrameChangedNotifications = true
+        scrollView.contentView.postsBoundsChangedNotifications = true
+        scrollView.hasVerticalScroller = true
+
+        self.view = scrollView
+
+        NSLayoutConstraint.activate([
+            scrollView.leadingAnchor.constraint(equalTo: view.leadingAnchor),
+            scrollView.trailingAnchor.constraint(equalTo: view.trailingAnchor),
+            scrollView.topAnchor.constraint(equalTo: view.topAnchor),
+            scrollView.bottomAnchor.constraint(equalTo: view.bottomAnchor)
+        ])
+
+        // Layout on scroll change
+        NotificationCenter.default.addObserver(
+            forName: NSView.frameDidChangeNotification,
+            object: scrollView.contentView,
+            queue: .main
+        ) { [weak self] _ in
+            self?.textView.updatedViewport(self?.scrollView.documentVisibleRect ?? .zero)
+        }
+
+        textView.updateFrameIfNeeded()
+    }
+
+    deinit {
+        NotificationCenter.default.removeObserver(self)
+    }
+}