feat: copy translation and dismiss with Return

Sources/Conjure/TranslationController.swift

@@ -13,6 +13,8 @@ final class TranslationController: NSViewController {
     private var task: Task<Void, Never>?
     var input: (() -> String)?
     var closed: (() -> Void)?
+    var dismiss: (() -> Void)?
+    private let pasteboard: NSPasteboard
     private let defaults: UserDefaults
     private let credentialsStore: Credentials
     private let myMemory: @MainActor (String) async throws -> String
@@ -22,12 +24,14 @@ final class TranslationController: NSViewController {
         defaults: UserDefaults = .standard,
         credentials: Credentials = .keychain,
         myMemory: @escaping @MainActor (String) async throws -> String = { try await MyMemoryAPI.translate($0) },
-        openAI: @escaping @MainActor (String, String) async throws -> String = { try await TranslationAPI.translate($0, apiKey: $1) }
+        openAI: @escaping @MainActor (String, String) async throws -> String = { try await TranslationAPI.translate($0, apiKey: $1) },
+        pasteboard: NSPasteboard = .general
     ) {
         self.defaults = defaults
         self.credentialsStore = credentials
         self.myMemory = myMemory
         self.openAI = openAI
+        self.pasteboard = pasteboard
         super.init(nibName: nil, bundle: nil)
     }
 
@@ -49,7 +53,7 @@ final class TranslationController: NSViewController {
         NotificationCenter.default.addObserver(self, selector: #selector(credentialsChanged),
             name: Notification.Name("ConjureTranslationCredentialsChanged"), object: nil)
         translateButton.target = self
-        translateButton.action = #selector(translate)
+        translateButton.action = #selector(performPrimaryAction)
         translateButton.keyEquivalent = "\r"
         translateButton.isBordered = false
         translateButton.font = .systemFont(ofSize: 12, weight: .medium)
@@ -131,6 +135,8 @@ final class TranslationController: NSViewController {
     func inputChanged() {
         cancelRequest()
         output.string = ""
+        translateButton.title = "Translate"
+        translateButton.toolTip = "Translate the English input (Return). Escape dismisses Conjure."
         settingsButton.isHidden = true
         setStatus("Press Return to translate.")
     }
@@ -151,6 +157,17 @@ final class TranslationController: NSViewController {
         status.textColor = isError ? .systemRed : SunsetPalette.secondaryText
     }
 
+    @objc func performPrimaryAction() {
+        guard task == nil else { return }
+        guard !output.string.isEmpty else { translate(); return }
+        pasteboard.clearContents()
+        if pasteboard.setString(output.string, forType: .string) {
+            dismiss?()
+        } else {
+            setStatus("Could not copy the translation. Try again.", isError: true)
+        }
+    }
+
     @objc func translate() {
         guard task == nil else { return }
         let text = input?() ?? ""
@@ -186,7 +203,9 @@ final class TranslationController: NSViewController {
                     : openAITranslate(text, key)
                 guard !Task.isCancelled, let self else { return }
                 self.output.string = translation
-                self.setStatus("Japanese · Select text to copy (⌘C).")
+                self.setStatus("English → Japanese")
+                self.translateButton.title = "Copy"
+                self.translateButton.toolTip = "Copy the translation and close Conjure (Return)."
             } catch {
                 guard !Task.isCancelled, let self else { return }
                 self.settingsButton.isHidden = myMemory