Improve note editor activity title update

Author: mvasilak

Zotero/Scenes/Detail/DetailCoordinator.swift

@@ -1009,7 +1009,6 @@ extension DetailCoordinator: DetailNoteEditorCoordinatorDelegate {
                     // If indeed a new note is created inform open items controller about it.
                     if isCreated, let self, let openItemsController = controllers.userControllers?.openItemsController {
                         openItemsController.open(.note(libraryId: library.identifier, key: note.key), for: sessionIdentifier)
-                        openItemsController.setOpenItemsUserActivity(from: navigationController, libraryId: library.identifier, title: note.title)
                     }
 
                 case .failure:

Zotero/Scenes/General/Models/NoteEditorState.swift

@@ -36,6 +36,7 @@ struct NoteEditorState: ViewModelState {
         static let tags = Changes(rawValue: 1 << 0)
         static let save = Changes(rawValue: 1 << 1)
         static let openItems = Changes(rawValue: 1 << 2)
+        static let displayTitle = Changes(rawValue: 1 << 3)
     }
 
     struct TitleData {
@@ -55,6 +56,7 @@ struct NoteEditorState: ViewModelState {
     var tags: [Tag]
     var changes: Changes
     var openItemsCount: Int
+    var displayTitle: String?
 
     init(kind: Kind, library: Library, title: TitleData?, text: String, tags: [Tag], openItemsCount: Int) {
         self.kind = kind
@@ -64,6 +66,13 @@ struct NoteEditorState: ViewModelState {
         self.title = title
         changes = []
         self.openItemsCount = openItemsCount
+        displayTitle = generateDisplayTitle()
+    }
+
+    func generateDisplayTitle() -> String? {
+        let parts = [title?.title, NotePreviewGenerator.preview(from: text)].compactMap({ $0 })
+        guard !parts.isEmpty else { return nil }
+        return parts.joined(separator: " / ")
     }
 
     mutating func cleanup() {

Zotero/Scenes/General/ViewModels/NoteEditorActionHandler.swift

@@ -103,6 +103,7 @@ struct NoteEditorActionHandler: ViewModelActionHandler, BackgroundDbProcessingAc
                             state.kind = .edit(key: note.key)
                         }
                         saveCallback(note.key, .success((note: note, isCreated: true)))
+                        updateDisplayTitleIfNeeded()
 
                     case .failure(let error):
                         DDLogError("NoteEditorActionHandler: can't create item note: \(error)")
@@ -120,9 +121,19 @@ struct NoteEditorActionHandler: ViewModelActionHandler, BackgroundDbProcessingAc
                         saveCallback(key, .failure(error))
                     } else {
                         saveCallback(key, .success((note: note, isCreated: false)))
+                        updateDisplayTitleIfNeeded()
                     }
                 }
             }
+
+            func updateDisplayTitleIfNeeded() {
+                let displayTitle = viewModel.state.generateDisplayTitle()
+                guard displayTitle != viewModel.state.displayTitle else { return }
+                update(viewModel: viewModel) { state in
+                    state.displayTitle = displayTitle
+                    state.changes = [.displayTitle]
+                }
+            }
         }
     }
 }

Zotero/Scenes/General/Views/NoteEditorViewController.swift

@@ -52,7 +52,7 @@ final class NoteEditorViewController: UIViewController {
     override func viewDidLoad() {
         super.viewDidLoad()
 
-        openItemsController.setOpenItemsUserActivity(from: self, libraryId: viewModel.state.library.identifier, title: viewModel.state.title?.title)
+        openItemsController.setOpenItemsUserActivity(from: self, libraryId: viewModel.state.library.identifier, title: viewModel.state.displayTitle)
 
         if let data = viewModel.state.title {
             navigationItem.titleView = NoteEditorTitleView(type: data.type, title: data.title)
@@ -115,7 +115,7 @@ final class NoteEditorViewController: UIViewController {
                                 if changedCurrentItem {
                                     forceSaveIfNeeded()
                                 } else if openItemsChanged {
-                                    openItemsController.setOpenItemsUserActivity(from: self, libraryId: viewModel.state.library.identifier, title: viewModel.state.title?.title)
+                                    openItemsController.setOpenItemsUserActivity(from: self, libraryId: viewModel.state.library.identifier, title: viewModel.state.displayTitle)
                                 }
                             }
                         )
@@ -164,6 +164,9 @@ final class NoteEditorViewController: UIViewController {
             if state.changes.contains(.openItems) {
                 setupNavbarItems(for: state)
             }
+            if state.changes.contains(.displayTitle) {
+                openItemsController.setOpenItemsUserActivity(from: self, libraryId: state.library.identifier, title: state.displayTitle)
+            }
 
             func debounceSave() {
                 debounceDisposeBag = nil