Fix Post button enabling/disabling

Packages/ComposeUI/Sources/ComposeUI/API/PostService.swift

@@ -45,6 +45,14 @@ final class PostService: ObservableObject {
                 await updateEditedAttachments()
             }
             
+            let pollParams: EditPollParameters?
+            if draft.pollEnabled,
+               let poll = draft.poll {
+                pollParams = EditPollParameters(options: poll.pollOptions.map(\.text), expiresIn: Int(poll.duration), multiple: poll.multiple)
+            } else {
+                pollParams = nil
+            }
+            
             request = Client.editStatus(
                 id: editedStatusID,
                 text: textForPosting(),
@@ -60,11 +68,23 @@ final class PostService: ObservableObject {
                         return nil
                     }
                 },
-                poll: draft.poll.map {
-                    EditPollParameters(options: $0.pollOptions.map(\.text), expiresIn: Int($0.duration), multiple: $0.multiple)
-                }
+                poll: pollParams
             )
         } else {
+            let pollOptions: [String]?
+            let pollExpiresIn: Int?
+            let pollMultiple: Bool?
+            if draft.pollEnabled,
+               let poll = draft.poll {
+                pollOptions = poll.pollOptions.map(\.text)
+                pollExpiresIn = Int(poll.duration)
+                pollMultiple = poll.multiple
+            } else {
+                pollOptions = nil
+                pollExpiresIn = nil
+                pollMultiple = nil
+            }
+            
             request = Client.createStatus(
                 text: textForPosting(),
                 contentType: config.contentType,
@@ -74,9 +94,9 @@ final class PostService: ObservableObject {
                 spoilerText: contentWarning,
                 visibility: draft.localOnly && mastodonController.instanceFeatures.localOnlyPostsVisibility ? Status.localPostVisibility : draft.visibility.rawValue,
                 language: mastodonController.instanceFeatures.createStatusWithLanguage ? draft.language : nil,
-                pollOptions: draft.poll?.pollOptions.map(\.text),
-                pollExpiresIn: draft.poll == nil ? nil : Int(draft.poll!.duration),
-                pollMultiple: draft.poll?.multiple,
+                pollOptions: pollOptions,
+                pollExpiresIn: pollExpiresIn,
+                pollMultiple: pollMultiple,
                 localOnly: mastodonController.instanceFeatures.localOnlyPosts && !mastodonController.instanceFeatures.localOnlyPostsVisibility ? draft.localOnly : nil,
                 idempotencyKey: draft.id.uuidString
             )

Packages/ComposeUI/Sources/ComposeUI/Controllers/ComposeController.swift

@@ -83,7 +83,7 @@ public final class ComposeController: ViewController {
     }
     
     private var isPollValid: Bool {
-        draft.poll == nil || draft.poll!.pollOptions.allSatisfy { !$0.text.isEmpty }
+        !draft.pollEnabled || draft.poll!.pollOptions.allSatisfy { !$0.text.isEmpty }
     }
     
     public var navigationTitle: String {

Packages/ComposeUI/Sources/ComposeUI/CoreData/Draft.swift

@@ -31,12 +31,18 @@ public class Draft: NSManagedObject, Identifiable {
     @NSManaged public var language: String? // ISO 639 language code
     @NSManaged public var lastModified: Date!
     @NSManaged public var localOnly: Bool
+    @NSManaged private var pollEnabledInternal: NSNumber?
     @NSManaged public var text: String
     @NSManaged private var visibilityStr: String
     
     @NSManaged internal var attachments: NSMutableOrderedSet
     @NSManaged public var poll: Poll?
     
+    public var pollEnabled: Bool {
+        get { pollEnabledInternal.map(\.boolValue) ?? (poll != nil) }
+        set { pollEnabledInternal = NSNumber(booleanLiteral: newValue) }
+    }
+    
     public var visibility: Visibility {
         get {
             Visibility(rawValue: visibilityStr) ?? .public
@@ -65,9 +71,6 @@ public class Draft: NSManagedObject, Identifiable {
 
 extension Draft {
     public var hasContent: Bool {
-        (!text.isEmpty && text != initialText) ||
-            (contentWarningEnabled && !contentWarning.isEmpty && contentWarning != initialContentWarning) ||
-            attachments.count > 0 ||
-            poll?.hasContent == true
+        !text.isEmpty && text != initialText
     }
 }

Packages/ComposeUI/Sources/ComposeUI/CoreData/Drafts.xcdatamodeld/Drafts.xcdatamodel/contents

@@ -1,5 +1,5 @@
 <?xml version="1.0" encoding="UTF-8" standalone="yes"?>
-<model type="com.apple.IDECoreDataModeler.DataModel" documentVersion="1.0" lastSavedToolsVersion="22222" systemVersion="22G91" minimumToolsVersion="Automatic" sourceLanguage="Swift" userDefinedModelVersionIdentifier="">
+<model type="com.apple.IDECoreDataModeler.DataModel" documentVersion="1.0" lastSavedToolsVersion="23605" systemVersion="24A335" minimumToolsVersion="Automatic" sourceLanguage="Swift" userDefinedModelVersionIdentifier="">
     <entity name="Draft" representedClassName="ComposeUI.Draft" syncable="YES">
         <attribute name="accountID" attributeType="String"/>
         <attribute name="contentWarning" attributeType="String" defaultValueString=""/>
@@ -12,6 +12,7 @@
         <attribute name="language" optional="YES" attributeType="String"/>
         <attribute name="lastModified" attributeType="Date" usesScalarValueType="NO"/>
         <attribute name="localOnly" attributeType="Boolean" defaultValueString="NO" usesScalarValueType="YES"/>
+        <attribute name="pollEnabledInternal" optional="YES" attributeType="Boolean" usesScalarValueType="YES"/>
         <attribute name="text" attributeType="String" defaultValueString=""/>
         <attribute name="visibilityStr" optional="YES" attributeType="String"/>
         <relationship name="attachments" toMany="YES" deletionRule="Cascade" ordered="YES" destinationEntity="DraftAttachment" inverseName="draft" inverseEntity="DraftAttachment"/>

Packages/ComposeUI/Sources/ComposeUI/CoreData/Poll.swift

@@ -41,6 +41,6 @@ public class Poll: NSManagedObject {
 
 extension Poll {
     public var hasContent: Bool {
-        pollOptions.allSatisfy { !$0.text.isEmpty }
+        pollOptions.contains { !$0.text.isEmpty }
     }
 }

Packages/ComposeUI/Sources/ComposeUI/OptionalObservedObject.swift

@@ -16,7 +16,6 @@ struct OptionalObservedObject<T: ObservableObject>: DynamicProperty {
             didSet {
                 cancellable?.cancel()
                 cancellable = wrapped?.objectWillChange
-                    .receive(on: RunLoop.main)
                     .sink { [unowned self] _ in
                         self.objectWillChange.send()
                     }
@@ -27,6 +26,10 @@ struct OptionalObservedObject<T: ObservableObject>: DynamicProperty {
     @StateObject private var republisher = Republisher()
     var wrappedValue: T?
     
+    init(wrappedValue: T?) {
+        self.wrappedValue = wrappedValue
+    }
+    
     func update() {
         republisher.wrapped = wrappedValue
     }

Packages/ComposeUI/Sources/ComposeUI/Views/Attachments/AttachmentsSection.swift

@@ -482,7 +482,7 @@ struct AddAttachmentConditionsModifier: ViewModifier {
         if instanceFeatures.mastodonAttachmentRestrictions {
             return draft.attachments.count < 4
                 && draft.draftAttachments.allSatisfy { $0.type == .image }
-                && draft.poll == nil
+                && !draft.pollEnabled
         } else {
             return true
         }

Packages/ComposeUI/Sources/ComposeUI/Views/ComposeDraftView.swift

@@ -28,7 +28,8 @@ struct ComposeDraftView: View {
                 
                 DraftContentEditor(draft: draft, focusedField: $focusedField)
                 
-                if let poll = draft.poll {
+                if let poll = draft.poll,
+                   draft.pollEnabled {
                     PollEditor(poll: poll)
                         .padding(.bottom, 4)
                         // So that during the appearance transition, it's behind the text view.
@@ -41,7 +42,9 @@ struct ComposeDraftView: View {
                     // Otherwise, when the poll is added, its bottom edge is aligned with the top edge of the attachments
                     .padding(.top, draft.poll == nil ? 0 : -4)
             }
-            .animation(.snappy, value: draft.poll == nil)
+            // These animations are here, because the height of the VStack and the positions of the lower views needs to animate too.
+            .animation(.snappy, value: draft.pollEnabled)
+            .modifier(PollAnimatingModifier(poll: draft.poll))
         }
     }
 }
@@ -78,3 +81,12 @@ private struct AccountNameView: View {
         }
     }
 }
+
+// Separate modifier because we need to observe the Poll itself, not the draft
+private struct PollAnimatingModifier: ViewModifier {
+    @OptionalObservedObject var poll: Poll?
+    
+    func body(content: Content) -> some View {
+        content.animation(.snappy, value: poll?.pollOptions.count)
+    }
+}

Packages/ComposeUI/Sources/ComposeUI/Views/ComposeNavigationBarActions.swift

@@ -0,0 +1,221 @@
+//
+//  ComposeNavigationBarActions.swift
+//  ComposeUI
+//
+//  Created by Shadowfacts on 1/30/25.
+//
+
+import SwiftUI
+import Combine
+import InstanceFeatures
+
+struct ComposeNavigationBarActions: ToolbarContent {
+    @ObservedObject var draft: Draft
+    // Prior to iOS 16, the toolbar content doesn't seem to have access
+    // to the environment from the containing view.
+    let controller: ComposeController
+    @Binding var isShowingDrafts: Bool
+    let isPosting: Bool
+    
+    var body: some ToolbarContent {
+        ToolbarItem(placement: .cancellationAction) { ToolbarCancelButton(draft: draft) }
+        
+        #if targetEnvironment(macCatalyst)
+        ToolbarItem(placement: .topBarTrailing) { DraftsButton(isShowingDrafts: $isShowingDrafts) }
+        ToolbarItem(placement: .confirmationAction) { PostButton(draft: draft, isPosting: isPosting) }
+        #else
+        ToolbarItem(placement: .confirmationAction) { PostOrDraftsButton(draft: draft, isShowingDrafts: $isShowingDrafts, isPosting: isPosting) }
+        #endif
+    }
+}
+
+private struct ToolbarCancelButton: View {
+    let draft: Draft
+    @EnvironmentObject private var controller: ComposeController
+    
+    var body: some View {
+        Button(action: controller.cancel) {
+            Text("Cancel")
+                // otherwise all Buttons in the nav bar are made semibold
+                .font(.system(size: 17, weight: .regular))
+        }
+        .disabled(controller.isPosting)
+        .confirmationDialog("Are you sure?", isPresented: $controller.isShowingSaveDraftSheet) {
+            // edit drafts can't be saved
+            if draft.editedStatusID == nil {
+                Button(action: { controller.cancel(deleteDraft: false) }) {
+                    Text("Save Draft")
+                }
+                Button(role: .destructive, action: { controller.cancel(deleteDraft: true) }) {
+                    Text("Delete Draft")
+                }
+            } else {
+                Button(role: .destructive, action: { controller.cancel(deleteDraft: true) }) {
+                    Text("Cancel Edit")
+                }
+            }
+        }
+    }
+}
+
+#if !targetEnvironment(macCatalyst)
+private struct PostOrDraftsButton: View {
+    @DraftObserving var draft: Draft
+    @Binding var isShowingDrafts: Bool
+    let isPosting: Bool
+    @Environment(\.composeUIConfig.allowSwitchingDrafts) private var allowSwitchingDrafts
+    
+    var body: some View {
+        if !draftIsEmpty || draft.editedStatusID != nil || !allowSwitchingDrafts {
+            PostButton(draft: draft, isPosting: isPosting)
+        } else {
+            DraftsButton(isShowingDrafts: $isShowingDrafts)
+        }
+    }
+    
+    private var draftIsEmpty: Bool {
+        draft.text == draft.initialText && (!draft.contentWarningEnabled || draft.contentWarning == draft.initialContentWarning) && draft.attachments.count == 0 && !draft.pollEnabled
+    }
+}
+#endif
+
+private struct PostButton: View {
+    @DraftObserving var draft: Draft
+    let isPosting: Bool
+    @EnvironmentObject private var instanceFeatures: InstanceFeatures
+    @Environment(\.composeUIConfig.requireAttachmentDescriptions) private var requireAttachmentDescriptions
+    @EnvironmentObject private var controller: ComposeController
+    
+    var body: some View {
+        Button(action: controller.postStatus) {
+            Text(draft.editedStatusID == nil ? "Post" : "Edit")
+        }
+        .keyboardShortcut(.return, modifiers: .command)
+        .disabled(!draftValid)
+        .disabled(isPosting)
+    }
+    
+    private var hasCharactersRemaining: Bool {
+        let limit = instanceFeatures.maxStatusChars
+        let cwCount = draft.contentWarningEnabled ? draft.contentWarning.count : 0
+        let bodyCount = CharacterCounter.count(text: draft.text, for: instanceFeatures)
+        let remaining = limit - (cwCount + bodyCount)
+        return remaining >= 0
+    }
+    
+    private var attachmentsCombinationValid: Bool {
+        if !instanceFeatures.mastodonAttachmentRestrictions {
+            true
+        } else if draft.attachments.count > 1,
+                  draft.draftAttachments.contains(where: { $0.type == .video }) {
+            false
+        } else if draft.attachments.count > 4 {
+            false
+        } else {
+            true
+        }
+    }
+    
+    private var attachmentsValid: Bool {
+        (!requireAttachmentDescriptions || draft.draftAttachments.allSatisfy { !$0.attachmentDescription.isEmpty })
+        && attachmentsCombinationValid
+    }
+    
+    private var pollValid: Bool {
+        !draft.pollEnabled || draft.poll!.pollOptions.allSatisfy { !$0.text.isEmpty }
+    }
+    
+    private var draftValid: Bool {
+        draft.editedStatusID != nil ||
+        ((draft.hasContent || draft.attachments.count > 0)
+         && hasCharactersRemaining
+         && attachmentsValid
+         && pollValid)
+    }
+}
+
+private struct DraftsButton: View {
+    @Binding var isShowingDrafts: Bool
+    
+    var body: some View {
+        Button {
+            isShowingDrafts = true
+        } label: {
+            Text("Drafts")
+        }
+    }
+}
+
+// This property wrapper lets a View observe all of the following:
+// 1. The Draft itself
+// 2. The Draft's Poll (if it has one)
+// 3. Each of the Poll's PollOptions (if there is a Poll)
+// 4. Each of the Draft's DraftAttachments
+@propertyWrapper
+private struct DraftObserving: DynamicProperty {
+    let wrappedValue: Draft
+    @StateObject private var observer = Observer()
+    
+    init(wrappedValue: Draft) {
+        self.wrappedValue = wrappedValue
+    }
+    
+    func update() {
+        observer.update(draft: wrappedValue)
+    }
+    
+    private class Observer: ObservableObject {
+        private var draft: Draft?
+        
+        private var cancellable: AnyCancellable?
+        private var draftPollObservation: NSKeyValueObservation?
+        private var pollOptionsObservation: NSKeyValueObservation?
+        private var pollOptionsCancellables: [AnyCancellable] = []
+        private var draftAttachmentsObservation: NSKeyValueObservation?
+        private var draftAttachmentsCancellables: [AnyCancellable] = []
+        
+        func update(draft: Draft) {
+            guard draft !== self.draft else {
+                return
+            }
+            self.draft = draft
+            cancellable = draft.objectWillChange
+                .sink { [unowned self] _ in self.objectWillChange.send() }
+            draftPollObservation = draft.observe(\.poll) { [unowned self] _, _ in
+                objectWillChange.send()
+                self.pollChanged()
+            }
+            pollChanged()
+            draftAttachmentsObservation = draft.observe(\.attachments) { [unowned self] _, _ in
+                objectWillChange.send()
+                self.draftAttachmentsChanged()
+            }
+            draftAttachmentsChanged()
+        }
+        
+        private func pollChanged() {
+            pollOptionsObservation = (draft?.poll).map {
+                $0.observe(\.options) { [unowned self] _, _ in
+                    objectWillChange.send()
+                    self.pollOptionsChanged()
+                }
+            }
+            pollOptionsChanged()
+        }
+        
+        private func pollOptionsChanged() {
+            pollOptionsCancellables = draft?.poll?.pollOptions.map {
+                $0.objectWillChange
+                    .sink { [unowned self] _ in self.objectWillChange.send() }
+            } ?? []
+        }
+        
+        private func draftAttachmentsChanged() {
+            draftAttachmentsCancellables = draft?.draftAttachments.map {
+                $0.objectWillChange
+                    .sink { [unowned self] _ in self.objectWillChange.send() }
+            } ?? []
+        }
+    }
+}
+

Packages/ComposeUI/Sources/ComposeUI/Views/ComposeView.swift

@@ -10,11 +10,16 @@ import SwiftUI
 struct ComposeView: View {
     @ObservedObject var draft: Draft
     let mastodonController: any ComposeMastodonContext
-    @State private var poster: PostService? = nil
+//    @State private var poster: PostService? = nil
     @FocusState private var focusedField: FocusableField?
     @EnvironmentObject private var controller: ComposeController
     @State private var isShowingDrafts = false
     
+    // TODO: replace this with an @State owned by this view
+    var poster: PostService? {
+        controller.poster
+    }
+    
     var body: some View {
         navigation
             .environmentObject(mastodonController.instanceFeatures)
@@ -80,7 +85,7 @@ struct ComposeView: View {
         .modifier(NavigationTitleModifier(draft: draft, mastodonController: mastodonController))
         .navigationBarTitleDisplayMode(.inline)
         .toolbar {
-            ToolbarActions(draft: draft, controller: controller, isShowingDrafts: $isShowingDrafts)
+            ComposeNavigationBarActions(draft: draft, controller: controller, isShowingDrafts: $isShowingDrafts, isPosting: poster != nil)
             #if os(visionOS)
             ToolbarItem(placement: .bottomOrnament) {
                 toolbarView
@@ -143,82 +148,6 @@ public struct NavigationTitlePreferenceKey: PreferenceKey {
     }
 }
 
-private struct ToolbarActions: ToolbarContent {
-    @ObservedObject var draft: Draft
-    // Prior to iOS 16, the toolbar content doesn't seem to have access
-    // to the environment from the containing view.
-    let controller: ComposeController
-    @Binding var isShowingDrafts: Bool
-    
-    var body: some ToolbarContent {
-        ToolbarItem(placement: .cancellationAction) { ToolbarCancelButton(draft: draft) }
-        
-        #if targetEnvironment(macCatalyst)
-        ToolbarItem(placement: .topBarTrailing) { draftsButton }
-        ToolbarItem(placement: .confirmationAction) { postButton }
-        #else
-        ToolbarItem(placement: .confirmationAction) { postOrDraftsButton }
-        #endif
-    }
-    
-    private var draftsButton: some View {
-        Button {
-            isShowingDrafts = true
-        } label: {
-            Text("Drafts")
-        }
-    }
-    
-    private var postButton: some View {
-        // TODO: don't use the controller for this
-        Button(action: controller.postStatus) {
-            Text(draft.editedStatusID == nil ? "Post" : "Edit")
-        }
-        .keyboardShortcut(.return, modifiers: .command)
-        .disabled(!controller.postButtonEnabled)
-    }
-    
-    #if !targetEnvironment(macCatalyst)
-    @ViewBuilder
-    private var postOrDraftsButton: some View {
-        if draft.hasContent || draft.editedStatusID != nil || !controller.config.allowSwitchingDrafts {
-            postButton
-        } else {
-            draftsButton
-        }
-    }
-    #endif
-}
-
-private struct ToolbarCancelButton: View {
-    let draft: Draft
-    @EnvironmentObject private var controller: ComposeController
-    
-    var body: some View {
-        Button(action: controller.cancel) {
-            Text("Cancel")
-                // otherwise all Buttons in the nav bar are made semibold
-                .font(.system(size: 17, weight: .regular))
-        }
-        .disabled(controller.isPosting)
-        .confirmationDialog("Are you sure?", isPresented: $controller.isShowingSaveDraftSheet) {
-            // edit drafts can't be saved
-            if draft.editedStatusID == nil {
-                Button(action: { controller.cancel(deleteDraft: false) }) {
-                    Text("Save Draft")
-                }
-                Button(role: .destructive, action: { controller.cancel(deleteDraft: true) }) {
-                    Text("Delete Draft")
-                }
-            } else {
-                Button(role: .destructive, action: { controller.cancel(deleteDraft: true) }) {
-                    Text("Cancel Edit")
-                }
-            }
-        }
-    }
-}
-
 enum FocusableField: Hashable {
     case contentWarning
     case body

Packages/ComposeUI/Sources/ComposeUI/Views/DraftContentEditor.swift

@@ -96,22 +96,27 @@ private struct TogglePollButton: View {
     @EnvironmentObject private var instanceFeatures: InstanceFeatures
     
     var body: some View {
-        Button {
-            if draft.poll == nil {
-                draft.poll = Poll(context: DraftsPersistentContainer.shared.viewContext)
-            } else {
-                draft.poll = nil
-            }
-        } label: {
-            Image(systemName: draft.poll == nil ? "chart.bar.doc.horizontal" : "chart.bar.horizontal.page.fill")
+        Button(action: togglePoll) {
+            Image(systemName: draft.pollEnabled ? "chart.bar.doc.horizontal.fill" : "chart.bar.horizontal.page")
         }
         .buttonStyle(LanguageButtonStyle())
         .disabled(disabled)
         .animation(.linear(duration: 0.2), value: disabled)
-        .animation(.linear(duration: 0.2), value: draft.poll == nil)
+        .animation(.linear(duration: 0.2), value: draft.pollEnabled)
     }
     
     private var disabled: Bool {
         instanceFeatures.mastodonAttachmentRestrictions && draft.attachments.count > 0
     }
+    
+    private func togglePoll() {
+        if draft.pollEnabled {
+            draft.pollEnabled = false
+        } else {
+            if draft.poll == nil {
+                draft.poll = Poll(context: DraftsPersistentContainer.shared.viewContext)
+            }
+            draft.pollEnabled = true
+        }
+    }
 }

Packages/ComposeUI/Sources/ComposeUI/Views/DraftsView.swift

@@ -136,6 +136,11 @@ private struct DraftRowView: View {
                 Text(draft.text)
                     .font(.body)
                 
+                if draft.pollEnabled {
+                    Text("Poll")
+                        .font(.body.bold())
+                }
+                
                 HStack(spacing: 8) {
                     ForEach(draft.draftAttachments) { attachment in
                         AttachmentThumbnailView(attachment: attachment, thumbnailSize: CGSize(width: 50, height: 50))

Packages/ComposeUI/Sources/ComposeUI/Views/PollEditor.swift

@@ -21,6 +21,7 @@ struct PollEditor: View {
                 PollOptionEditor(option: option, index: poll.options.index(of: option)) {
                     self.removeOption(option)
                 }
+                .transition(.opacity)
             }
             
             AddOptionButton(poll: poll)