fix: preserve uncommitted translation input

Sources/Conjure/TranslationController.swift

@@ -32,6 +32,14 @@ final class TranslationController: NSViewController {
     private func languageName(_ code: String) -> String { Self.languageName(code) }
     private var usesMyMemory: Bool
     private var textToTranslate: String?
+    struct Draft {
+        let input: String
+        let textToTranslate: String?
+    }
+    private var committed = false
+    var draft: Draft? {
+        committed ? nil : Draft(input: input?() ?? "", textToTranslate: textToTranslate)
+    }
     private let sourcePreview = NSTextField(wrappingLabelWithString: "")
     private let output = NSTextView()
     private let settingsButton = NSButton(title: "Open Translate Settings", target: nil, action: nil)
@@ -60,13 +68,15 @@ final class TranslationController: NSViewController {
         openAI: @escaping @MainActor (String, String, String, String, String) async throws -> String = {
             try await TranslationAPI.translate($0, apiKey: $3, sourceLanguage: $1, targetLanguage: $2, context: $4)
         },
-        pasteboard: NSPasteboard = .general
+        pasteboard: NSPasteboard = .general,
+        draft: Draft? = nil
     ) {
         self.defaults = defaults
         self.credentialsStore = credentials
         self.myMemory = myMemory
         self.openAI = openAI
         self.pasteboard = pasteboard
+        textToTranslate = draft?.textToTranslate
         usesMyMemory = defaults.string(forKey: "translationProvider") != "openai"
         sourceLanguage = defaults.string(forKey: "translationSourceLanguage")
             .flatMap { Self.languages.contains($0) ? $0 : nil } ?? "en"
@@ -285,6 +295,7 @@ final class TranslationController: NSViewController {
     }
 
     func inputChanged() {
+        committed = false
         cancelRequest()
         output.string = ""
         outputSecondaryRange = nil
@@ -354,6 +365,7 @@ final class TranslationController: NSViewController {
         }
         pasteboard.clearContents()
         if pasteboard.setString(output.string, forType: .string) {
+            committed = true
             dismiss?()
         } else {
             setStatus("Could not copy the translation. Try again.", isError: true)