Improve offline experience (#255)

Shared/Models/WriteFreelyModel.swift

@@ -17,6 +17,14 @@ final class WriteFreelyModel: ObservableObject {
     @Published var hasError: Bool = false
     var currentError: Error? {
         didSet {
+            if let localizedErrorDescription = currentError?.localizedDescription,
+               localizedErrorDescription == "The operation couldn’t be completed. (WriteFreely.WFError error -2.)",
+               !hasNetworkConnection {
+                #if DEBUG
+                print("⚠️ currentError is WriteFreely.WFError -2 and there is no network connection.")
+                #endif
+                currentError = NetworkError.noConnectionError
+            }
             #if DEBUG
             print("⚠️ currentError -> didSet \(currentError?.localizedDescription ?? "nil")")
             print("  > hasError was: \(self.hasError)")
@@ -66,6 +74,10 @@ final class WriteFreelyModel: ObservableObject {
             self.preferences.appearance = self.defaults.integer(forKey: WFDefaults.colorSchemeIntegerKey)
             self.preferences.font = self.defaults.integer(forKey: WFDefaults.defaultFontIntegerKey)
             self.account.restoreState()
+
+            // Set the appearance
+            self.preferences.updateAppearance(to: Appearance(rawValue: self.preferences.appearance) ?? .system)
+
             if self.account.isLoggedIn {
                 guard let serverURL = URL(string: self.account.server) else {
                     self.currentError = AccountError.invalidServerURL

Shared/Navigation/ContentView.swift

@@ -59,14 +59,7 @@ struct ContentView: View {
                 .withErrorHandling()
             #endif
 
-            #if os(macOS)
+            NoSelectedPostView(isConnected: $model.hasNetworkConnection)
-            Text("Select a post, or create a new local draft.")
-                .foregroundColor(.secondary)
-                .frame(width: 500, height: 500)
-            #else
-            Text("Select a post, or create a new local draft.")
-                .foregroundColor(.secondary)
-            #endif
         }
         .environmentObject(model)
         .onChange(of: model.hasError) { value in

Shared/Navigation/NoSelectedPostView.swift

@@ -0,0 +1,29 @@
+import SwiftUI
+
+struct NoSelectedPostView: View {
+    @Binding var isConnected: Bool
+
+    var body: some View {
+        VStack(spacing: 8) {
+            Text("Select a post, or create a new local draft.")
+            if !isConnected {
+                Label("You are not connected to the internet", systemImage: "wifi.exclamationmark")
+                    .font(.caption)
+                    .foregroundColor(.secondary)
+            }
+        }
+        .frame(width: 500, height: 500)
+    }
+}
+
+struct NoSelectedPostViewIsDisconnected_Previews: PreviewProvider {
+    static var previews: some View {
+        NoSelectedPostView(isConnected: Binding.constant(true))
+    }
+}
+
+struct NoSelectedPostViewIsConnected_Previews: PreviewProvider {
+    static var previews: some View {
+        NoSelectedPostView(isConnected: Binding.constant(false))
+    }
+}

Shared/PostList/PostListView.swift

@@ -97,6 +97,7 @@ struct PostListView: View {
                             .padding(.vertical, 4)
                             .padding(.horizontal, 8)
                     } else {
+                        if model.hasNetworkConnection {
                             Button(action: {
                                 DispatchQueue.main.async {
                                     model.fetchUserCollections()
@@ -110,6 +111,12 @@ struct PostListView: View {
                             .accessibilityLabel(Text("Refresh Posts"))
                             .accessibilityHint(Text("Fetch changes from the server"))
                             .disabled(!model.account.isLoggedIn)
+                        } else {
+                            Image(systemName: "wifi.exclamationmark")
+                                .padding(.vertical, 4)
+                                .padding(.horizontal, 8)
+                                .foregroundColor(.secondary)
+                        }
                     }
                 }
                 .padding(.top, 8)

Shared/Preferences/PreferencesModel.swift

@@ -1,21 +1,25 @@
 import SwiftUI
 
+enum Appearance: Int {
+    case system = 0
+    case light = 1
+    case dark = 2
+}
+
 class PreferencesModel: ObservableObject {
     private let defaults = UserDefaults.shared
 
-    /* We're stuck dropping into AppKit/UIKit to set light/dark schemes for now,
+    @Published var selectedColorScheme: ColorScheme?
-     * because setting the .preferredColorScheme modifier on views in SwiftUI is
+    @Published var appearance: Int = 0
-     * currently unreliable.
+    @Published var font: Int = 0 {
-     *
+        didSet {
-     * Feedback submitted to Apple:
+            defaults.set(font, forKey: WFDefaults.defaultFontIntegerKey)
-     *
+        }
-     * FB8382883: "On macOS 11β4, preferredColorScheme modifier does not respect .light ColorScheme"
+    }
-     * FB8383053: "On iOS 14β4/macOS 11β4, it is not possible to unset preferredColorScheme after setting
-     *              it to either .light or .dark"
-     */
 
-    #if os(iOS)
     @available(iOSApplicationExtension, unavailable)
+    func updateAppearance(to appearance: Appearance) {
+        #if os(iOS)
         var window: UIWindow? {
             guard let scene = UIApplication.shared.connectedScenes.first,
                   let windowSceneDelegate = scene.delegate as? UIWindowSceneDelegate,
@@ -26,42 +30,25 @@ class PreferencesModel: ObservableObject {
         }
         #endif
 
-    @available(iOSApplicationExtension, unavailable)
-    @Published var selectedColorScheme: ColorScheme?
-
-    @available(iOSApplicationExtension, unavailable)
-    @Published var appearance: Int = 0 {
-        didSet {
         switch appearance {
-            case 1:
+        case .light:
-//                selectedColorScheme = .light
             #if os(macOS)
             NSApp.appearance = NSAppearance(named: .aqua)
             #else
             window?.overrideUserInterfaceStyle = .light
             #endif
-            case 2:
+        case .dark:
-//                selectedColorScheme = .dark
             #if os(macOS)
             NSApp.appearance = NSAppearance(named: .darkAqua)
             #else
             window?.overrideUserInterfaceStyle = .dark
             #endif
         default:
-//                selectedColorScheme = .none
             #if os(macOS)
             NSApp.appearance = nil
             #else
             window?.overrideUserInterfaceStyle = .unspecified
             #endif
         }
-
-            defaults.set(appearance, forKey: WFDefaults.colorSchemeIntegerKey)
-        }
-    }
-    @Published var font: Int = 0 {
-        didSet {
-            defaults.set(font, forKey: WFDefaults.defaultFontIntegerKey)
-        }
     }
 }

Shared/Preferences/PreferencesView.swift

@@ -3,6 +3,28 @@ import SwiftUI
 struct PreferencesView: View {
     @ObservedObject var preferences: PreferencesModel
 
+    /* We're stuck dropping into AppKit/UIKit to set light/dark schemes for now,
+     * because setting the .preferredColorScheme modifier on views in SwiftUI is
+     * currently unreliable.
+     *
+     * Feedback submitted to Apple:
+     *
+     * FB8382883: "On macOS 11β4, preferredColorScheme modifier does not respect .light ColorScheme"
+     * FB8383053: "On iOS 14β4/macOS 11β4, it is not possible to unset preferredColorScheme after setting
+     *              it to either .light or .dark"
+     */
+
+    #if os(iOS)
+    var window: UIWindow? {
+        guard let scene = UIApplication.shared.connectedScenes.first,
+              let windowSceneDelegate = scene.delegate as? UIWindowSceneDelegate,
+              let window = windowSceneDelegate.window else {
+            return nil
+        }
+        return window
+    }
+    #endif
+
     var body: some View {
         VStack {
             VStack {
@@ -46,6 +68,10 @@ struct PreferencesView: View {
             }
             .padding(.bottom)
         }
+        .onChange(of: preferences.appearance) { value in
+            preferences.updateAppearance(to: Appearance(rawValue: value) ?? .system)
+            UserDefaults.shared.set(value, forKey: WFDefaults.colorSchemeIntegerKey)
+        }
     }
 }
 

WriteFreely-MultiPlatform.xcodeproj/project.pbxproj

@@ -136,6 +136,8 @@
 		17DFDE8B251D309400A25F31 /* OpenSans-License.txt in Resources */ = {isa = PBXBuildFile; fileRef = 17DFDE86251D309400A25F31 /* OpenSans-License.txt */; };
 		17DFDE8C251D309400A25F31 /* OpenSans-License.txt in Resources */ = {isa = PBXBuildFile; fileRef = 17DFDE86251D309400A25F31 /* OpenSans-License.txt */; };
 		17E5DF8A2543610700DCDC9B /* PostTextEditingView.swift in Sources */ = {isa = PBXBuildFile; fileRef = 17E5DF892543610700DCDC9B /* PostTextEditingView.swift */; };
+		37095AE02AA4A0E700C9C5F8 /* NoSelectedPostView.swift in Sources */ = {isa = PBXBuildFile; fileRef = 37113EF82A98C10A00B36B98 /* NoSelectedPostView.swift */; };
+		37113EF92A98C10A00B36B98 /* NoSelectedPostView.swift in Sources */ = {isa = PBXBuildFile; fileRef = 37113EF82A98C10A00B36B98 /* NoSelectedPostView.swift */; };
 		375A67E828FC555C007A1AC0 /* MultilineTextView.swift in Sources */ = {isa = PBXBuildFile; fileRef = 375A67E728FC555C007A1AC0 /* MultilineTextView.swift */; };
 		3779389729EC0C880032D6C1 /* HelpCommands.swift in Sources */ = {isa = PBXBuildFile; fileRef = 3779389629EC0C880032D6C1 /* HelpCommands.swift */; };
 		37F749D129B4D3090087F0BF /* SearchablePostListFilteredView.swift in Sources */ = {isa = PBXBuildFile; fileRef = 37F749D029B4D3090087F0BF /* SearchablePostListFilteredView.swift */; };
@@ -270,6 +272,7 @@
 		17DFDE85251D309400A25F31 /* Lora-Cyrillic-OFL.txt */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = text; path = "Lora-Cyrillic-OFL.txt"; sourceTree = "<group>"; };
 		17DFDE86251D309400A25F31 /* OpenSans-License.txt */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = text; path = "OpenSans-License.txt"; sourceTree = "<group>"; };
 		17E5DF892543610700DCDC9B /* PostTextEditingView.swift */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.swift; path = PostTextEditingView.swift; sourceTree = "<group>"; };
+		37113EF82A98C10A00B36B98 /* NoSelectedPostView.swift */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.swift; path = NoSelectedPostView.swift; sourceTree = "<group>"; };
 		375A67E728FC555C007A1AC0 /* MultilineTextView.swift */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.swift; path = MultilineTextView.swift; sourceTree = "<group>"; };
 		3779389629EC0C880032D6C1 /* HelpCommands.swift */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.swift; path = HelpCommands.swift; sourceTree = "<group>"; };
 		37F749D029B4D3090087F0BF /* SearchablePostListFilteredView.swift */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.swift; path = SearchablePostListFilteredView.swift; sourceTree = "<group>"; };
@@ -586,6 +589,7 @@
 			isa = PBXGroup;
 			children = (
 				17DF328224C87D3300BCE2E3 /* ContentView.swift */,
+				37113EF82A98C10A00B36B98 /* NoSelectedPostView.swift */,
 			);
 			path = Navigation;
 			sourceTree = "<group>";
@@ -922,6 +926,7 @@
 				173E19D1254318F600440F0F /* RemoteChangePromptView.swift in Sources */,
 				17B37C5625C8679800FE75E9 /* WriteFreelyModel+API.swift in Sources */,
 				17C42E622507D8E600072984 /* PostStatus.swift in Sources */,
+				37095AE02AA4A0E700C9C5F8 /* NoSelectedPostView.swift in Sources */,
 				1756DBBA24FED45500207AB8 /* LocalStorageManager.swift in Sources */,
 				1727526A2809991A003D0A6A /* ErrorHandling.swift in Sources */,
 				1756AE8124CB844500FD7257 /* View+Keyboard.swift in Sources */,
@@ -975,6 +980,7 @@
 				17120DAA24E1B2F5002B9F6C /* AccountLogoutView.swift in Sources */,
 				17DF32D624C8CA3400BCE2E3 /* PostStatusBadgeView.swift in Sources */,
 				172C492E2593981900E20ADF /* MacUpdatesView.swift in Sources */,
+				37113EF92A98C10A00B36B98 /* NoSelectedPostView.swift in Sources */,
 				1727526728099802003D0A6A /* ErrorConstants.swift in Sources */,
 				17479F152583D8E40072B7FB /* PostEditorSharingPicker.swift in Sources */,
 				17480CA6251272EE00EB7765 /* Bundle+AppVersion.swift in Sources */,
@@ -1060,7 +1066,7 @@
 				CLANG_CXX_LANGUAGE_STANDARD = "gnu++17";
 				CODE_SIGN_ENTITLEMENTS = "ActionExtension-iOS/ActionExtension-iOS.entitlements";
 				CODE_SIGN_STYLE = Automatic;
-				CURRENT_PROJECT_VERSION = 704;
+				CURRENT_PROJECT_VERSION = 706;
 				DEVELOPMENT_TEAM = TPPAB4YBA6;
 				GENERATE_INFOPLIST_FILE = YES;
 				INFOPLIST_FILE = "ActionExtension-iOS/Info.plist";
@@ -1072,7 +1078,7 @@
 					"@executable_path/Frameworks",
 					"@executable_path/../../Frameworks",
 				);
-				MARKETING_VERSION = 1.0.16;
+				MARKETING_VERSION = 1.0.17;
 				PRODUCT_BUNDLE_IDENTIFIER = "com.abunchtell.WriteFreely-MultiPlatform.ActionExtension-iOS";
 				PRODUCT_NAME = "$(TARGET_NAME)";
 				SDKROOT = iphoneos;
@@ -1091,7 +1097,7 @@
 				CLANG_CXX_LANGUAGE_STANDARD = "gnu++17";
 				CODE_SIGN_ENTITLEMENTS = "ActionExtension-iOS/ActionExtension-iOS.entitlements";
 				CODE_SIGN_STYLE = Automatic;
-				CURRENT_PROJECT_VERSION = 704;
+				CURRENT_PROJECT_VERSION = 706;
 				DEVELOPMENT_TEAM = TPPAB4YBA6;
 				GENERATE_INFOPLIST_FILE = YES;
 				INFOPLIST_FILE = "ActionExtension-iOS/Info.plist";
@@ -1103,7 +1109,7 @@
 					"@executable_path/Frameworks",
 					"@executable_path/../../Frameworks",
 				);
-				MARKETING_VERSION = 1.0.16;
+				MARKETING_VERSION = 1.0.17;
 				PRODUCT_BUNDLE_IDENTIFIER = "com.abunchtell.WriteFreely-MultiPlatform.ActionExtension-iOS";
 				PRODUCT_NAME = "$(TARGET_NAME)";
 				SDKROOT = iphoneos;
@@ -1234,7 +1240,7 @@
 				ASSETCATALOG_COMPILER_GLOBAL_ACCENT_COLOR_NAME = AccentColor;
 				CODE_SIGN_ENTITLEMENTS = "WriteFreely-MultiPlatform (iOS).entitlements";
 				CODE_SIGN_STYLE = Automatic;
-				CURRENT_PROJECT_VERSION = 704;
+				CURRENT_PROJECT_VERSION = 706;
 				DEVELOPMENT_TEAM = TPPAB4YBA6;
 				ENABLE_PREVIEWS = YES;
 				INFOPLIST_FILE = iOS/Info.plist;
@@ -1243,7 +1249,7 @@
 					"$(inherited)",
 					"@executable_path/Frameworks",
 				);
-				MARKETING_VERSION = 1.0.16;
+				MARKETING_VERSION = 1.0.17;
 				PRODUCT_BUNDLE_IDENTIFIER = "com.abunchtell.WriteFreely-MultiPlatform";
 				PRODUCT_NAME = "WriteFreely-MultiPlatform";
 				SDKROOT = iphoneos;
@@ -1260,7 +1266,7 @@
 				ASSETCATALOG_COMPILER_GLOBAL_ACCENT_COLOR_NAME = AccentColor;
 				CODE_SIGN_ENTITLEMENTS = "WriteFreely-MultiPlatform (iOS).entitlements";
 				CODE_SIGN_STYLE = Automatic;
-				CURRENT_PROJECT_VERSION = 704;
+				CURRENT_PROJECT_VERSION = 706;
 				DEVELOPMENT_TEAM = TPPAB4YBA6;
 				ENABLE_PREVIEWS = YES;
 				INFOPLIST_FILE = iOS/Info.plist;
@@ -1269,7 +1275,7 @@
 					"$(inherited)",
 					"@executable_path/Frameworks",
 				);
-				MARKETING_VERSION = 1.0.16;
+				MARKETING_VERSION = 1.0.17;
 				PRODUCT_BUNDLE_IDENTIFIER = "com.abunchtell.WriteFreely-MultiPlatform";
 				PRODUCT_NAME = "WriteFreely-MultiPlatform";
 				SDKROOT = iphoneos;

iOS/PostEditor/PostEditorView.swift

@@ -50,7 +50,10 @@ struct PostEditorView: View {
                 PostEditorStatusToolbarView(post: post)
             }
             ToolbarItem(placement: .primaryAction) {
-                if model.isProcessingRequest {
+                if !model.hasNetworkConnection {
+                    Image(systemName: "wifi.exclamationmark")
+                        .foregroundColor(.secondary)
+                } else if model.isProcessingRequest {
                     ProgressView()
                 } else {
                     Menu(content: {

macOS/PostEditor/MacEditorTextView.swift

@@ -115,6 +115,7 @@ final class CustomTextView: NSView {
         let scrollView = NSScrollView()
         scrollView.drawsBackground = false
         scrollView.borderType = .noBorder
+        scrollView.autohidesScrollers = true
         scrollView.hasVerticalScroller = true
         scrollView.hasHorizontalRuler = false
         scrollView.autoresizingMask = [.width, .height]
@@ -167,6 +168,8 @@ final class CustomTextView: NSView {
             .font: font ?? NSFont.systemFont(ofSize: 17),   // Fall back to system font if we can't unwrap font argument
             .foregroundColor: NSColor.labelColor
         ]
+        textView.textContainer?.lineFragmentPadding = 16
+        textView.textContainerInset = NSSize(width: 0, height: 16)
 
         return textView
     }()

macOS/PostEditor/PostEditorView.swift

@@ -9,11 +9,17 @@ struct PostEditorView: View {
     @State private var updatingFromServer: Bool = false
 
     var body: some View {
+        VStack {
+            if !model.hasNetworkConnection {
+                Label("You are not connected to the internet", systemImage: "wifi.exclamationmark")
+                    .font(.caption)
+                    .foregroundColor(.secondary)
+                    .padding(.top, 8)
+            }
             PostTextEditingView(
                 post: post,
                 updatingFromServer: $updatingFromServer
             )
-        .padding()
             .background(Color(NSColor.controlBackgroundColor))
             .onAppear(perform: {
                 model.editor.setInitialValues(for: post)
@@ -69,6 +75,7 @@ struct PostEditorView: View {
                 }
             })
         }
+    }
 }
 
 struct PostEditorView_EmptyPostPreviews: PreviewProvider {

macOS/PostEditor/PostTextEditingView.swift

@@ -15,7 +15,8 @@ struct PostTextEditingView: View {
             if combinedText.count == 0 {
                 Text("Write…")
                     .foregroundColor(Color(NSColor.placeholderTextColor))
-                    .padding(.horizontal, 5)
+                    .padding(.horizontal, 16)
+                    .padding(.vertical, 16)
                     .font(.custom(appearance.rawValue, size: 17, relativeTo: .body))
             }
             if post.appearance == "sans" {