Use view model for CollectionListView

Shared/Navigation/ContentView.swift

@@ -35,22 +35,7 @@ struct ContentView: View {
                     .help("Create a new local draft.")
                 }
             #else
-            if #available(iOS 15.0, *) {
+            CollectionListView(selectedCollection: model.selectedCollection)
-                CollectionListView()
-                    .alert(isPresented: $model.isPresentingNetworkErrorAlert, content: {
-                        Alert(
-                            title: Text("Connection Error"),
-                            message: Text("""
-                            There is no internet connection at the moment. Please reconnect or try again later.
-                            """),
-                            dismissButton: .default(Text("OK"), action: {
-                                model.isPresentingNetworkErrorAlert = false
-                            })
-                        )
-                    })
-            } else {
-                CollectionListView()
-            }
             #endif
 
             #if os(macOS)
@@ -64,50 +49,13 @@ struct ContentView: View {
                 }
             }
             #else
-            if #available(iOS 15.0, *) {
+            PostListView(selectedCollection: nil, showAllPosts: false)
-                PostListView()
-                    .sheet(
-                        isPresented: $model.isPresentingSettingsView,
-                        onDismiss: { model.isPresentingSettingsView = false },
-                        content: {
-                            SettingsView()
-                                .environmentObject(model)
-                        }
-                    )
-            } else {
-                PostListView()
-            }
             #endif
 
             Text("Select a post, or create a new local draft.")
                 .foregroundColor(.secondary)
         }
         .environmentObject(model)
-        // For iOS 14
-        if #available(iOS 15.0, *) {
-            // Do nothing.
-        } else {
-        EmptyView()
-            .sheet(
-                isPresented: $model.isPresentingSettingsView,
-                onDismiss: { model.isPresentingSettingsView = false },
-                content: {
-                    SettingsView()
-                        .environmentObject(model)
-                }
-            )
-            .alert(isPresented: $model.isPresentingNetworkErrorAlert, content: {
-                Alert(
-                    title: Text("Connection Error"),
-                    message: Text("""
-                        There is no internet connection at the moment. Please reconnect or try again later.
-                        """),
-                    dismissButton: .default(Text("OK"), action: {
-                        model.isPresentingNetworkErrorAlert = false
-                    })
-                )
-            })
-        }
     }
 }
 

Shared/PostCollection/CollectionListModel.swift

@@ -0,0 +1,40 @@
+import SwiftUI
+import CoreData
+
+class CollectionListModel: NSObject, ObservableObject {
+    @Published var list: [WFACollection] = []
+    private let collectionsController: NSFetchedResultsController<WFACollection>
+
+    init(managedObjectContext: NSManagedObjectContext) {
+        collectionsController = NSFetchedResultsController(fetchRequest: WFACollection.collectionsFetchRequest,
+                                                           managedObjectContext: managedObjectContext,
+                                                           sectionNameKeyPath: nil,
+                                                           cacheName: nil)
+
+        super.init()
+
+        collectionsController.delegate = self
+
+        do {
+            try collectionsController.performFetch()
+            list = collectionsController.fetchedObjects ?? []
+        } catch {
+            print("Failed to fetch collections!")
+        }
+    }
+}
+
+extension CollectionListModel: NSFetchedResultsControllerDelegate {
+    func controllerDidChangeContent(_ controller: NSFetchedResultsController<NSFetchRequestResult>) {
+        guard let collections = controller.fetchedObjects as? [WFACollection] else { return }
+        self.list = collections
+    }
+}
+
+extension WFACollection {
+    static var collectionsFetchRequest: NSFetchRequest<WFACollection> {
+        let request: NSFetchRequest<WFACollection> = WFACollection.createFetchRequest()
+        request.sortDescriptors = [NSSortDescriptor(keyPath: \WFACollection.title, ascending: true)]
+        return request
+    }
+}

Shared/PostCollection/CollectionListView.swift

@@ -2,71 +2,24 @@ import SwiftUI
 
 struct CollectionListView: View {
     @EnvironmentObject var model: WriteFreelyModel
-
+    @ObservedObject var collections = CollectionListModel(managedObjectContext: LocalStorageManager.persistentContainer.viewContext)
-    @FetchRequest(
+    @State var selectedCollection: WFACollection?
-        entity: WFACollection.entity(),
-        sortDescriptors: [NSSortDescriptor(keyPath: \WFACollection.title, ascending: true)]
-    ) var collections: FetchedResults<WFACollection>
 
     var body: some View {
-        List(selection: $model.selectedCollection) {
+        List(selection: $selectedCollection) {
             if model.account.isLoggedIn {
-                NavigationLink(
+                NavigationLink("All Posts", destination: PostListView(selectedCollection: nil, showAllPosts: true))
-                    destination: PostListView(),
+                NavigationLink("Drafts", destination: PostListView(selectedCollection: nil, showAllPosts: false))
-                    isActive: Binding<Bool>(
-                        get: { () -> Bool in
-                            model.selectedCollection == nil && model.showAllPosts
-                        }, set: { newValue in
-                            if newValue {
-                                self.model.showAllPosts = true
-                                self.model.selectedCollection = nil
-                            } else {
-                                // No-op
-                            }
-                        }
-                    ),
-                    label: {
-                    Text("All Posts")
-                })
-                NavigationLink(
-                    destination: PostListView(),
-                    isActive: Binding<Bool>(
-                        get: { () -> Bool in
-                            model.selectedCollection == nil && !model.showAllPosts
-                        }, set: { newValue in
-                            if newValue {
-                                self.model.showAllPosts = false
-                                self.model.selectedCollection = nil
-                            } else {
-                                // No-op
-                            }
-                        }
-                    ),
-                    label: {
-                    Text(model.account.server == "https://write.as" ? "Anonymous" : "Drafts")
-                })
                 Section(header: Text("Your Blogs")) {
-                    ForEach(collections, id: \.self) { collection in
+                    ForEach(collections.list, id: \.self) { collection in
-                        NavigationLink(
+                        NavigationLink(destination: PostListView(selectedCollection: collection, showAllPosts: false),
-                            destination: PostListView(),
+                                       tag: collection,
-                            isActive: Binding<Bool>(
+                                       selection: $selectedCollection,
-                                get: { () -> Bool in
+                                       label: { Text("\(collection.title)") })
-                                    model.selectedCollection == collection && !model.showAllPosts
-                                }, set: { newValue in
-                                    if newValue {
-                                        self.model.showAllPosts = false
-                                        self.model.selectedCollection = collection
-                                    } else {
-                                        // No-op
-                                    }
-                                }
-                            ),
-                            label: { Text(collection.title) }
-                        )
                     }
                 }
             } else {
-                NavigationLink(destination: PostListView()) {
+                NavigationLink(destination: PostListView(selectedCollection: nil, showAllPosts: false)) {
                     Text("Drafts")
                 }
             }

Shared/PostList/PostListFilteredView.swift

@@ -97,7 +97,7 @@ struct PostListFilteredView: View {
             Alert(
                 title: Text("Delete Post?"),
                 message: Text("This action cannot be undone."),
-                primaryButton: .cancel() {
+                primaryButton: .cancel {
                     model.postToDelete = nil
                 },
                 secondaryButton: .destructive(Text("Delete"), action: {

Shared/PostList/PostListView.swift

@@ -7,6 +7,9 @@ struct PostListView: View {
 
     @State private var postCount: Int = 0
 
+    var selectedCollection: WFACollection?
+    var showAllPosts: Bool
+
     #if os(iOS)
     private var frameHeight: CGFloat {
         var height: CGFloat = 50
@@ -20,12 +23,12 @@ struct PostListView: View {
         #if os(iOS)
         ZStack(alignment: .bottom) {
             PostListFilteredView(
-                collection: model.selectedCollection,
+                collection: selectedCollection,
-                showAllPosts: model.showAllPosts,
+                showAllPosts: showAllPosts,
                 postCount: $postCount
             )
                 .navigationTitle(
-                    model.showAllPosts ? "All Posts" : model.selectedCollection?.title ?? (
+                    showAllPosts ? "All Posts" : selectedCollection?.title ?? (
                         model.account.server == "https://write.as" ? "Anonymous" : "Drafts"
                     )
                 )
@@ -70,9 +73,28 @@ struct PostListView: View {
                     })
                     .accessibilityLabel(Text("Settings"))
                     .accessibilityHint(Text("Open the Settings sheet"))
+                    .sheet(
+                        isPresented: $model.isPresentingSettingsView,
+                        onDismiss: { model.isPresentingSettingsView = false },
+                        content: {
+                            SettingsView()
+                                .environmentObject(model)
+                        }
+                    )
                     Spacer()
                     Text(postCount == 1 ? "\(postCount) post" : "\(postCount) posts")
                         .foregroundColor(.secondary)
+                        .alert(isPresented: $model.isPresentingNetworkErrorAlert, content: {
+                            Alert(
+                                title: Text("Connection Error"),
+                                message: Text("""
+                                There is no internet connection at the moment. Please reconnect or try again later.
+                                """),
+                                dismissButton: .default(Text("OK"), action: {
+                                    model.isPresentingNetworkErrorAlert = false
+                                })
+                            )
+                        })
                     Spacer()
                     if model.isProcessingRequest {
                         ProgressView()
@@ -105,8 +127,8 @@ struct PostListView: View {
         .ignoresSafeArea()
         #else
         PostListFilteredView(
-            collection: model.selectedCollection,
+            collection: selectedCollection,
-            showAllPosts: model.showAllPosts,
+            showAllPosts: showAllPosts,
             postCount: $postCount
         )
         .toolbar {
@@ -129,7 +151,7 @@ struct PostListView: View {
             }
         }
         .navigationTitle(
-            model.showAllPosts ? "All Posts" : model.selectedCollection?.title ?? (
+            showAllPosts ? "All Posts" : selectedCollection?.title ?? (
                 model.account.server == "https://write.as" ? "Anonymous" : "Drafts"
             )
         )
@@ -142,7 +164,7 @@ struct PostListView_Previews: PreviewProvider {
         let context = LocalStorageManager.persistentContainer.viewContext
         let model = WriteFreelyModel()
 
-        return PostListView()
+        return PostListView(showAllPosts: true)
             .environment(\.managedObjectContext, context)
             .environmentObject(model)
     }

Shared/WriteFreely_MultiPlatformApp.swift

@@ -34,24 +34,24 @@ struct WriteFreely_MultiPlatformApp: App {
         WindowGroup {
             ContentView()
                 .onAppear(perform: {
-                    if model.editor.showAllPostsFlag {
+//                    if model.editor.showAllPostsFlag {
-                        DispatchQueue.main.async {
+//                        DispatchQueue.main.async {
-                            self.model.selectedCollection = nil
+//                            self.model.selectedCollection = nil
-                            self.model.showAllPosts = true
+//                            self.model.showAllPosts = true
-                        }
+//                        }
-                    } else {
+//                    } else {
-                        DispatchQueue.main.async {
+//                        DispatchQueue.main.async {
-                            self.model.selectedCollection = model.editor.fetchSelectedCollectionFromAppStorage()
+//                            self.model.selectedCollection = model.editor.fetchSelectedCollectionFromAppStorage()
-                            self.model.showAllPosts = false
+//                            self.model.showAllPosts = false
-                        }
+//                        }
-                    }
+//                    }
-                    DispatchQueue.main.asyncAfter(deadline: .now() + 0.5) {
+//                    DispatchQueue.main.asyncAfter(deadline: .now() + 0.5) {
-                        if model.editor.lastDraftURL != nil {
+//                        if model.editor.lastDraftURL != nil {
-                            self.model.selectedPost = model.editor.fetchLastDraftFromAppStorage()
+//                            self.model.selectedPost = model.editor.fetchLastDraftFromAppStorage()
-                        } else {
+//                        } else {
-                            createNewLocalPost()
+//                            createNewLocalPost()
-                        }
+//                        }
-                    }
+//                    }
                 })
                 .environmentObject(model)
                 .environment(\.managedObjectContext, LocalStorageManager.persistentContainer.viewContext)

WriteFreely-MultiPlatform.xcodeproj/project.pbxproj

@@ -7,6 +7,8 @@
 	objects = {
 
 /* Begin PBXBuildFile section */
+		170A7EC126F5186A00F1CBD4 /* CollectionListModel.swift in Sources */ = {isa = PBXBuildFile; fileRef = 170A7EC026F5186A00F1CBD4 /* CollectionListModel.swift */; };
+		170A7EC226F5186A00F1CBD4 /* CollectionListModel.swift in Sources */ = {isa = PBXBuildFile; fileRef = 170A7EC026F5186A00F1CBD4 /* CollectionListModel.swift */; };
 		170DFA34251BBC44001D82A0 /* PostEditorModel.swift in Sources */ = {isa = PBXBuildFile; fileRef = 170DFA33251BBC44001D82A0 /* PostEditorModel.swift */; };
 		170DFA35251BBC44001D82A0 /* PostEditorModel.swift in Sources */ = {isa = PBXBuildFile; fileRef = 170DFA33251BBC44001D82A0 /* PostEditorModel.swift */; };
 		17120DA124E19839002B9F6C /* AccountView.swift in Sources */ = {isa = PBXBuildFile; fileRef = 17A5388D24DDEC7400DEFF9A /* AccountView.swift */; };
@@ -126,6 +128,7 @@
 
 /* Begin PBXFileReference section */
 		1709ADDF251B9A110053AF79 /* EditorLaunchingPolicy.md */ = {isa = PBXFileReference; lastKnownFileType = net.daringfireball.markdown; path = EditorLaunchingPolicy.md; sourceTree = "<group>"; };
+		170A7EC026F5186A00F1CBD4 /* CollectionListModel.swift */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.swift; path = CollectionListModel.swift; sourceTree = "<group>"; };
 		170DFA33251BBC44001D82A0 /* PostEditorModel.swift */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.swift; path = PostEditorModel.swift; sourceTree = "<group>"; };
 		17120DA424E19CBF002B9F6C /* SettingsView.swift */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.swift; path = SettingsView.swift; sourceTree = "<group>"; };
 		17120DA824E1B2F5002B9F6C /* AccountLogoutView.swift */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.swift; path = AccountLogoutView.swift; sourceTree = "<group>"; };
@@ -496,6 +499,7 @@
 		17DF32D224C8B78D00BCE2E3 /* PostCollection */ = {
 			isa = PBXGroup;
 			children = (
+				170A7EC026F5186A00F1CBD4 /* CollectionListModel.swift */,
 				171BFDF924D4AF8300888236 /* CollectionListView.swift */,
 			);
 			path = PostCollection;
@@ -755,6 +759,7 @@
 				17B996DA2502D23E0017B536 /* WFAPost+CoreDataProperties.swift in Sources */,
 				1756AE7724CB2EDD00FD7257 /* PostEditorView.swift in Sources */,
 				17DF32D524C8CA3400BCE2E3 /* PostStatusBadgeView.swift in Sources */,
+				170A7EC126F5186A00F1CBD4 /* CollectionListModel.swift in Sources */,
 				17D435E824E3128F0036B539 /* PreferencesModel.swift in Sources */,
 				1756AE7A24CB65DF00FD7257 /* PostListView.swift in Sources */,
 				17B996D82502D23E0017B536 /* WFAPost+CoreDataClass.swift in Sources */,
@@ -791,6 +796,7 @@
 				17C42E662509237800072984 /* PostListFilteredView.swift in Sources */,
 				17120DAD24E1B99F002B9F6C /* AccountLoginView.swift in Sources */,
 				17466626256C0D0600629997 /* MacEditorTextView.swift in Sources */,
+				170A7EC226F5186A00F1CBD4 /* CollectionListModel.swift in Sources */,
 				17E5DF8A2543610700DCDC9B /* PostTextEditingView.swift in Sources */,
 				17C42E71250AAFD500072984 /* NSManagedObjectContext+ExecuteAndMergeChanges.swift in Sources */,
 				1756AE7B24CB65DF00FD7257 /* PostListView.swift in Sources */,