feat: add counter and emoji picker activity indicator

Mastodon.xcodeproj/project.pbxproj

@@ -1171,8 +1171,8 @@
 				DB789A2125F9F76D0071ACA0 /* CollectionViewCell */,
 				DB789A0A25F9F2950071ACA0 /* ComposeViewController.swift */,
 				DB789A1125F9F2CC0071ACA0 /* ComposeViewModel.swift */,
-				DB9A488926034D40008B817C /* ComposeViewModel+PublishState.swift */,
 				DB66728B25F9F8DC00D60309 /* ComposeViewModel+Diffable.swift */,
+				DB9A488926034D40008B817C /* ComposeViewModel+PublishState.swift */,
 			);
 			path = Compose;
 			sourceTree = "<group>";

Mastodon/Diffiable/Section/ComposeStatusSection.swift

@@ -85,15 +85,8 @@ extension ComposeStatusSection {
                         UIView.animate(withDuration: 0.33, delay: 0, options: [.curveEaseOut]) {
                             cell.statusContentWarningEditorView.alpha = 1
                         } completion: { _ in
-                            if isContentWarningComposing {
-                                cell.statusContentWarningEditorView.textView.becomeFirstResponder()
-                            }
                             // do nothing
                         }
-                        // restore responder if needs
-                        if cell.statusContentWarningEditorView.textView.isFirstResponder {
-                            cell.textEditorView.isEditing = true
-                        }
                     }
                     .store(in: &cell.disposeBag)
                 cell.contentWarningContent

Mastodon/Generated/Assets.swift

@@ -75,10 +75,10 @@ internal enum Asset {
     internal static let buttonDefault = ColorAsset(name: "Colors/buttonDefault")
     internal static let buttonDisabled = ColorAsset(name: "Colors/buttonDisabled")
     internal static let buttonInactive = ColorAsset(name: "Colors/buttonInactive")
+    internal static let danger = ColorAsset(name: "Colors/danger")
     internal static let lightAlertYellow = ColorAsset(name: "Colors/lightAlertYellow")
     internal static let lightBackground = ColorAsset(name: "Colors/lightBackground")
     internal static let lightBrandBlue = ColorAsset(name: "Colors/lightBrandBlue")
-    internal static let lightDangerRed = ColorAsset(name: "Colors/lightDangerRed")
     internal static let lightDarkGray = ColorAsset(name: "Colors/lightDarkGray")
     internal static let lightDisabled = ColorAsset(name: "Colors/lightDisabled")
     internal static let lightInactive = ColorAsset(name: "Colors/lightInactive")

Mastodon/Scene/Compose/CollectionViewCell/ComposeStatusPollOptionCollectionViewCell.swift

@@ -10,6 +10,7 @@ import UIKit
 import Combine
 
 protocol ComposeStatusPollOptionCollectionViewCellDelegate: class {
+    func composeStatusPollOptionCollectionViewCell(_ cell: ComposeStatusPollOptionCollectionViewCell, textFieldDidBeginEditing textField: UITextField)
     func composeStatusPollOptionCollectionViewCell(_ cell: ComposeStatusPollOptionCollectionViewCell, textBeforeDeleteBackward text: String?)
     func composeStatusPollOptionCollectionViewCell(_ cell: ComposeStatusPollOptionCollectionViewCell, pollOptionTextFieldDidReturn: UITextField)
 }
@@ -132,6 +133,12 @@ extension ComposeStatusPollOptionCollectionViewCell: DeleteBackwardResponseTextF
 
 // MARK: - UITextFieldDelegate
 extension ComposeStatusPollOptionCollectionViewCell: UITextFieldDelegate {
+    
+    func textFieldDidBeginEditing(_ textField: UITextField) {
+        os_log(.info, log: .debug, "%{public}s[%{public}ld], %{public}s", ((#file as NSString).lastPathComponent), #line, #function)
+        delegate?.composeStatusPollOptionCollectionViewCell(self, textFieldDidBeginEditing: textField)
+    }
+    
     func textFieldShouldReturn(_ textField: UITextField) -> Bool {
         os_log(.info, log: .debug, "%{public}s[%{public}ld], %{public}s", ((#file as NSString).lastPathComponent), #line, #function)
         if textField === pollOptionView.optionTextField {

Mastodon/Scene/Compose/ComposeViewController.swift

@@ -10,6 +10,7 @@ import UIKit
 import Combine
 import PhotosUI
 import Kingfisher
+import MastodonSDK
 import TwitterTextEditor
 
 final class ComposeViewController: UIViewController, NeedsDependency {
@@ -102,14 +103,18 @@ final class ComposeViewController: UIViewController, NeedsDependency {
         return documentPickerController
     }()
     
+    deinit {
+        os_log(.info, log: .debug, "%{public}s[%{public}ld], %{public}s", ((#file as NSString).lastPathComponent), #line, #function)
+    }
+    
 }
 
 extension ComposeViewController {
     private static func createLayout() -> UICollectionViewLayout {
-        let itemSize = NSCollectionLayoutSize(widthDimension: .fractionalWidth(1.0), heightDimension: .estimated(100))
+        let itemSize = NSCollectionLayoutSize(widthDimension: .fractionalWidth(1.0), heightDimension: .estimated(44))
         let item = NSCollectionLayoutItem(layoutSize: itemSize)
-        let groupSize = NSCollectionLayoutSize(widthDimension: .fractionalWidth(1.0), heightDimension: .estimated(100))
+        let groupSize = NSCollectionLayoutSize(widthDimension: .fractionalWidth(1.0), heightDimension: .estimated(44))
-        let group = NSCollectionLayoutGroup.horizontal(layoutSize: groupSize, subitems: [item])
+        let group = NSCollectionLayoutGroup.vertical(layoutSize: groupSize, subitems: [item])
         let section = NSCollectionLayoutSection(group: group)
         section.contentInsetsReference = .readableContent
         // section.interGroupSpacing = 10
@@ -232,22 +237,61 @@ extension ComposeViewController {
         })
         .store(in: &disposeBag)
 
+        // bind publish bar button state
         viewModel.isPublishBarButtonItemEnabled
             .receive(on: DispatchQueue.main)
             .assign(to: \.isEnabled, on: publishBarButtonItem)
             .store(in: &disposeBag)
         
+        // bind media button toolbar state
         viewModel.isMediaToolbarButtonEnabled
             .receive(on: DispatchQueue.main)
             .assign(to: \.isEnabled, on: composeToolbarView.mediaButton)
             .store(in: &disposeBag)
         
+        // bind poll button toolbar state
         viewModel.isPollToolbarButtonEnabled
             .receive(on: DispatchQueue.main)
             .assign(to: \.isEnabled, on: composeToolbarView.pollButton)
             .store(in: &disposeBag)
 
-        // bind custom emojis
+        // bind image picker toolbar state
+        viewModel.attachmentServices
+            .receive(on: DispatchQueue.main)
+            .sink { [weak self] attachmentServices in
+                guard let self = self else { return }
+                self.composeToolbarView.mediaButton.isEnabled = attachmentServices.count < 4
+                self.resetImagePicker()
+            }
+            .store(in: &disposeBag)
+        
+        // bind visibility toolbar UI
+        viewModel.selectedStatusVisibility
+            .receive(on: DispatchQueue.main)
+            .sink { [weak self] type in
+                guard let self = self else { return }
+                self.composeToolbarView.visibilityButton.setImage(type.image, for: .normal)
+            }
+            .store(in: &disposeBag)
+        
+        viewModel.characterCount
+            .receive(on: DispatchQueue.main)
+            .sink { [weak self] characterCount in
+                guard let self = self else { return }
+                let count = ComposeViewModel.composeContentLimit - characterCount
+                self.composeToolbarView.characterCountLabel.text = "\(count)"
+                switch count {
+                case _ where count < 0:
+                    self.composeToolbarView.characterCountLabel.font = .systemFont(ofSize: 24, weight: .bold)
+                    self.composeToolbarView.characterCountLabel.textColor = Asset.Colors.danger.color
+                default:
+                    self.composeToolbarView.characterCountLabel.font = .systemFont(ofSize: 15, weight: .regular)
+                    self.composeToolbarView.characterCountLabel.textColor = Asset.Colors.Label.secondary.color
+                }
+            }
+            .store(in: &disposeBag)
+        
+        // bind text editor for custom emojis update event
         viewModel.customEmojiViewModel
             .compactMap { $0?.emojis }
             .switchToLatest()
@@ -261,22 +305,24 @@ extension ComposeViewController {
             })
             .store(in: &disposeBag)
 
-        // bind image picker toolbar state
+        // bind custom emoji picker UI
-        viewModel.attachmentServices
+        viewModel.customEmojiViewModel
             .receive(on: DispatchQueue.main)
-            .sink { [weak self] attachmentServices in
+            .map { viewModel -> AnyPublisher<[Mastodon.Entity.Emoji], Never> in
-                guard let self = self else { return }
+                guard let viewModel = viewModel else {
-                self.composeToolbarView.mediaButton.isEnabled = attachmentServices.count < 4
+                    return Just([]).eraseToAnyPublisher()
-                self.resetImagePicker()
                 }
-            .store(in: &disposeBag)
+                return viewModel.emojis.eraseToAnyPublisher()
-        
-        viewModel.selectedStatusVisibility
-            .receive(on: DispatchQueue.main)
-            .sink { [weak self] type in
-                guard let self = self else { return }
-                self.composeToolbarView.visibilityButton.setImage(type.image, for: .normal)
             }
+            .switchToLatest()
+            .sink(receiveValue: { [weak self] emojis in
+                guard let self = self else { return }
+                if emojis.isEmpty {
+                    self.customEmojiPickerInputView.activityIndicatorView.startAnimating()
+                } else {
+                    self.customEmojiPickerInputView.activityIndicatorView.stopAnimating()
+                }
+            })
             .store(in: &disposeBag)
     }
     
@@ -317,6 +363,25 @@ extension ComposeViewController {
         textEditorView()?.isEditing = true
     }
     
+    private func contentWarningEditorTextView() -> UITextView? {
+        guard let diffableDataSource = viewModel.diffableDataSource else { return nil }
+        let items = diffableDataSource.snapshot().itemIdentifiers
+        for item in items {
+            switch item {
+            case .input:
+                guard let indexPath = diffableDataSource.indexPath(for: item),
+                      let cell = collectionView.cellForItem(at: indexPath) as? ComposeStatusContentCollectionViewCell else {
+                    continue
+                }
+                return cell.statusContentWarningEditorView.textView
+            default:
+                continue
+            }
+        }
+        
+        return nil
+    }
+    
     private func pollOptionCollectionViewCell(of item: ComposeStatusItem) -> ComposeStatusPollOptionCollectionViewCell? {
         guard case .pollOption = item else { return nil }
         guard let diffableDataSource = viewModel.diffableDataSource else { return nil }
@@ -587,6 +652,15 @@ extension ComposeViewController: TextEditorViewTextAttributesDelegate {
                     attributedString.addAttributes(attributes, range: match.range)
                 }
                 
+                if string.count > ComposeViewModel.composeContentLimit {
+                    var attributes = [NSAttributedString.Key: Any]()
+                    attributes[.foregroundColor] = Asset.Colors.danger.color
+                    let boundStart = string.index(string.startIndex, offsetBy: ComposeViewModel.composeContentLimit)
+                    let boundEnd = string.endIndex
+                    let range = boundStart..<boundEnd
+                    attributedString.addAttributes(attributes, range: NSRange(range, in: string))
+                }
+                
                 completion(attributedString)
             }
         }
@@ -631,7 +705,20 @@ extension ComposeViewController: ComposeToolbarViewDelegate {
     }
     
     func composeToolbarView(_ composeToolbarView: ComposeToolbarView, contentWarningButtonDidPressed sender: UIButton) {
+        // restore first responder for text editor when content warning dismiss
+        if viewModel.isContentWarningComposing.value {
+            if contentWarningEditorTextView()?.isFirstResponder == true {
+                markTextEditorViewBecomeFirstResponser()
+            }
+        }
+        
+        // toggle composing status
         viewModel.isContentWarningComposing.value.toggle()
+        
+        // active content warning after toggled
+        if viewModel.isContentWarningComposing.value {
+            contentWarningEditorTextView()?.becomeFirstResponder()
+        }
     }
     
     func composeToolbarView(_ composeToolbarView: ComposeToolbarView, visibilityButtonDidPressed sender: UIButton, visibilitySelectionType type: ComposeToolbarView.VisibilitySelectionType) {
@@ -773,6 +860,14 @@ extension ComposeViewController: ComposeStatusAttachmentCollectionViewCellDelega
 // MARK: - ComposeStatusPollOptionCollectionViewCellDelegate
 extension ComposeViewController: ComposeStatusPollOptionCollectionViewCellDelegate {
     
+    func composeStatusPollOptionCollectionViewCell(_ cell: ComposeStatusPollOptionCollectionViewCell, textFieldDidBeginEditing textField: UITextField) {
+        // FIXME: make poll section visible
+        // DispatchQueue.main.async {
+        //     self.collectionView.scroll(to: .bottom, animated: true)
+        // }
+    }
+
+    
     // handle delete backward event for poll option input
     func composeStatusPollOptionCollectionViewCell(_ cell: ComposeStatusPollOptionCollectionViewCell, textBeforeDeleteBackward text: String?) {
         guard (text ?? "").isEmpty else { return }

Mastodon/Scene/Compose/ComposeViewModel+Diffable.swift

@@ -55,7 +55,6 @@ extension ComposeViewModel {
             self.pollOptionAttributes.value = pollOptionAttributes
         }
     
-        
         self.diffableDataSource = diffableDataSource
         var snapshot = NSDiffableDataSourceSnapshot<ComposeStatusSection, ComposeStatusItem>()
         snapshot.appendSections([.repliedTo, .status, .attachment, .poll])

Mastodon/Scene/Compose/ComposeViewModel.swift

@@ -5,6 +5,7 @@
 //  Created by MainasuK Cirno on 2021-3-11.
 //
 
+import os.log
 import UIKit
 import Combine
 import CoreData
@@ -14,6 +15,8 @@ import MastodonSDK
 
 final class ComposeViewModel {
     
+    static let composeContentLimit: Int = 500
+    
     var disposeBag = Set<AnyCancellable>()
     
     // input
@@ -48,11 +51,13 @@ final class ComposeViewModel {
     let isPublishBarButtonItemEnabled = CurrentValueSubject<Bool, Never>(false)
     let isMediaToolbarButtonEnabled = CurrentValueSubject<Bool, Never>(true)
     let isPollToolbarButtonEnabled = CurrentValueSubject<Bool, Never>(true)
+    let characterCount = CurrentValueSubject<Int, Never>(0)
     
     // custom emojis
     var customEmojiViewModelSubscription: AnyCancellable?
     let customEmojiViewModel = CurrentValueSubject<EmojiService.CustomEmojiViewModel?, Never>(nil)
     let customEmojiPickerInputViewModel = CustomEmojiPickerInputViewModel()
+    let isLoadingCustomEmoji = CurrentValueSubject<Bool, Never>(false)
     
     // attachment
     let attachmentServices = CurrentValueSubject<[MastodonAttachmentService], Never>([])
@@ -109,10 +114,30 @@ final class ComposeViewModel {
             }
             .store(in: &disposeBag)
         
+        // bind character count
+        Publishers.CombineLatest3(
+            composeStatusAttribute.composeContent.eraseToAnyPublisher(),
+            composeStatusAttribute.isContentWarningComposing.eraseToAnyPublisher(),
+            composeStatusAttribute.contentWarningContent.eraseToAnyPublisher()
+        )
+        .map { composeContent, isContentWarningComposing, contentWarningContent -> Int in
+            let composeContent = composeContent ?? ""
+            var count = composeContent.count
+            if isContentWarningComposing {
+                count += contentWarningContent.count
+            }
+            return count
+        }
+        .assign(to: \.value, on: characterCount)
+        .store(in: &disposeBag)
         // bind compose bar button item UI state
         let isComposeContentEmpty = composeStatusAttribute.composeContent
             .map { ($0 ?? "").isEmpty }
-        let isComposeContentValid = Just(true).eraseToAnyPublisher()
+        let isComposeContentValid = composeStatusAttribute.composeContent
+            .map { composeContent -> Bool in
+                let composeContent = composeContent ?? ""
+                return composeContent.count <= ComposeViewModel.composeContentLimit
+            }
         let isMediaEmpty = attachmentServices
             .map { $0.isEmpty }
         let isMediaUploadAllSuccess = attachmentServices
@@ -278,6 +303,10 @@ final class ComposeViewModel {
         .store(in: &disposeBag)
     }
     
+    deinit {
+        os_log(.info, log: .debug, "%{public}s[%{public}ld], %{public}s", ((#file as NSString).lastPathComponent), #line, #function)
+    }
+    
 }
 
 extension ComposeViewModel {
@@ -301,6 +330,6 @@ extension ComposeViewModel: MastodonAttachmentServiceDelegate {
 extension ComposeViewModel: ComposePollAttributeDelegate {
     func composePollAttribute(_ attribute: ComposeStatusItem.ComposePollOptionAttribute, pollOptionDidChange: String?) {
         // trigger update
-        pollOptionAttributes.value = pollOptionAttributes.value
+        // pollOptionAttributes.value = pollOptionAttributes.value
     }
 }

Mastodon/Scene/Compose/View/ComposeToolbarView.swift

@@ -59,6 +59,14 @@ final class ComposeToolbarView: UIView {
         return button
     }()
     
+    let characterCountLabel: UILabel = {
+        let label = UILabel()
+        label.font = .systemFont(ofSize: 15, weight: .regular)
+        label.text = "500"
+        label.textColor = Asset.Colors.Label.secondary.color
+        return label
+    }()
+    
     override init(frame: CGRect) {
         super.init(frame: frame)
         _init()
@@ -102,6 +110,16 @@ extension ComposeToolbarView {
             ])
         }
         
+        characterCountLabel.translatesAutoresizingMaskIntoConstraints = false
+        addSubview(characterCountLabel)
+        NSLayoutConstraint.activate([
+            characterCountLabel.topAnchor.constraint(equalTo: topAnchor),
+            characterCountLabel.leadingAnchor.constraint(greaterThanOrEqualTo: stackView.trailingAnchor, constant: 8),
+            characterCountLabel.trailingAnchor.constraint(equalTo: layoutMarginsGuide.trailingAnchor),
+            characterCountLabel.bottomAnchor.constraint(equalTo: bottomAnchor),
+        ])
+        characterCountLabel.setContentHuggingPriority(.defaultHigh, for: .horizontal)
+        
         mediaButton.menu = createMediaContextMenu()
         mediaButton.showsMenuAsPrimaryAction = true
         pollButton.addTarget(self, action: #selector(ComposeToolbarView.pollButtonDidPressed(_:)), for: .touchUpInside)

Mastodon/Scene/Compose/View/CustomEmojiPickerInputView.swift

@@ -17,6 +17,8 @@ final class CustomEmojiPickerInputView: UIInputView {
         return collectionView
     }()
     
+    let activityIndicatorView = UIActivityIndicatorView(style: .large)
+    
     override init(frame: CGRect, inputViewStyle: UIInputView.Style) {
         super.init(frame: frame, inputViewStyle: inputViewStyle)
         _init()
@@ -33,6 +35,13 @@ extension CustomEmojiPickerInputView {
     private func _init() {
         allowsSelfSizing = true
         
+        activityIndicatorView.translatesAutoresizingMaskIntoConstraints = false
+        addSubview(activityIndicatorView)
+        NSLayoutConstraint.activate([
+            activityIndicatorView.centerXAnchor.constraint(equalTo: centerXAnchor),
+            activityIndicatorView.centerYAnchor.constraint(equalTo: centerYAnchor),
+        ])
+
         collectionView.translatesAutoresizingMaskIntoConstraints = false
         addSubview(collectionView)
         NSLayoutConstraint.activate([
@@ -41,6 +50,9 @@ extension CustomEmojiPickerInputView {
             collectionView.trailingAnchor.constraint(equalTo: trailingAnchor),
             collectionView.bottomAnchor.constraint(equalTo: bottomAnchor),
         ])
+        
+        activityIndicatorView.hidesWhenStopped = true
+        activityIndicatorView.startAnimating()
     }
 }
 

Mastodon/Scene/HomeTimeline/HomeTimelineNavigationBarView.swift

@@ -15,7 +15,7 @@ final class HomeTimelineNavigationBarView {
     }()
     
     static let offlineView: UIView = {
-        let view = HomeTimelineNavigationBarView.backgroundViewWithColor(color: Asset.Colors.lightDangerRed.color)
+        let view = HomeTimelineNavigationBarView.backgroundViewWithColor(color: Asset.Colors.danger.color)
         let label = HomeTimelineNavigationBarView.contentLabel(text: L10n.Scene.HomeTimeline.NavigationBarState.offline)
         HomeTimelineNavigationBarView.addLabelToView(label: label, view: view)
         return view

Mastodon/Scene/Onboarding/Register/MastodonRegisterViewController.swift

@@ -106,7 +106,7 @@ final class MastodonRegisterViewController: UIViewController, NeedsDependency, O
     
     let usernameErrorPromptLabel: UILabel = {
         let label = UILabel()
-        let color = Asset.Colors.lightDangerRed.color
+        let color = Asset.Colors.danger.color
         let font = UIFont.preferredFont(forTextStyle: .caption1)
         return label
     }()
@@ -146,7 +146,7 @@ final class MastodonRegisterViewController: UIViewController, NeedsDependency, O
     
     let emailErrorPromptLabel: UILabel = {
         let label = UILabel()
-        let color = Asset.Colors.lightDangerRed.color
+        let color = Asset.Colors.danger.color
         let font = UIFont.preferredFont(forTextStyle: .caption1)
         return label
     }()
@@ -177,7 +177,7 @@ final class MastodonRegisterViewController: UIViewController, NeedsDependency, O
     
     let passwordErrorPromptLabel: UILabel = {
         let label = UILabel()
-        let color = Asset.Colors.lightDangerRed.color
+        let color = Asset.Colors.danger.color
         let font = UIFont.preferredFont(forTextStyle: .caption1)
         return label
     }()
@@ -201,7 +201,7 @@ final class MastodonRegisterViewController: UIViewController, NeedsDependency, O
     
     let reasonErrorPromptLabel: UILabel = {
         let label = UILabel()
-        let color = Asset.Colors.lightDangerRed.color
+        let color = Asset.Colors.danger.color
         let font = UIFont.preferredFont(forTextStyle: .caption1)
         return label
     }()

Mastodon/Scene/Onboarding/Register/MastodonRegisterViewModel.swift

@@ -198,10 +198,10 @@ extension MastodonRegisterViewModel {
         let attributeString = NSMutableAttributedString()
 
         let image = MastodonRegisterViewModel.xmarkImage(font: font)
-        attributeString.append(attributedStringImage(with: image, tintColor: Asset.Colors.lightDangerRed.color))
+        attributeString.append(attributedStringImage(with: image, tintColor: Asset.Colors.danger.color))
         attributeString.append(NSAttributedString(string: " "))
         
-        let promptAttributedString = NSAttributedString(string: prompt, attributes: [NSAttributedString.Key.font: font, NSAttributedString.Key.foregroundColor: Asset.Colors.lightDangerRed.color])
+        let promptAttributedString = NSAttributedString(string: prompt, attributes: [NSAttributedString.Key.font: font, NSAttributedString.Key.foregroundColor: Asset.Colors.danger.color])
         attributeString.append(promptAttributedString)
         
         return attributeString