mirror of
https://github.com/vector-im/element-ios.git
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347 lines
13 KiB
Swift
347 lines
13 KiB
Swift
// File created from ScreenTemplate
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// $ createScreen.sh Threads/ThreadList ThreadList
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/*
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Copyright 2021 New Vector Ltd
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Licensed under the Apache License, Version 2.0 (the "License");
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you may not use this file except in compliance with the License.
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You may obtain a copy of the License at
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http://www.apache.org/licenses/LICENSE-2.0
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Unless required by applicable law or agreed to in writing, software
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distributed under the License is distributed on an "AS IS" BASIS,
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WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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See the License for the specific language governing permissions and
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limitations under the License.
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*/
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import Foundation
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final class ThreadListViewModel: ThreadListViewModelProtocol {
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// MARK: - Properties
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// MARK: Private
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private let session: MXSession
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private let roomId: String
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private var threads: [MXThread] = []
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private var eventFormatter: MXKEventFormatter?
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private var roomState: MXRoomState?
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private var currentOperation: MXHTTPOperation?
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private var longPressedThread: MXThread?
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// MARK: Public
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weak var viewDelegate: ThreadListViewModelViewDelegate?
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weak var coordinatorDelegate: ThreadListViewModelCoordinatorDelegate?
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var selectedFilterType: ThreadListFilterType = .all
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private(set) var viewState: ThreadListViewState = .idle {
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didSet {
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self.viewDelegate?.threadListViewModel(self, didUpdateViewState: viewState)
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}
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}
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// MARK: - Setup
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init(session: MXSession,
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roomId: String) {
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self.session = session
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self.roomId = roomId
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session.threadingService.addDelegate(self)
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}
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deinit {
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session.threadingService.removeDelegate(self)
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self.cancelOperations()
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}
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// MARK: - Public
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func process(viewAction: ThreadListViewAction) {
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switch viewAction {
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case .loadData:
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loadData()
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case .complete:
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coordinatorDelegate?.threadListViewModelDidLoadThreads(self)
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case .showFilterTypes:
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viewState = .showingFilterTypes
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case .selectFilterType(let type):
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selectedFilterType = type
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loadData()
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case .selectThread(let index):
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selectThread(index)
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case .longPressThread(let index):
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longPressThread(index)
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case .actionViewInRoom:
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actionViewInRoom()
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case .actionCopyLinkToThread:
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actionCopyLinkToThread()
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case .actionShare:
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actionShare()
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case .cancel:
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cancelOperations()
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coordinatorDelegate?.threadListViewModelDidCancel(self)
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}
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}
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var numberOfThreads: Int {
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return threads.count
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}
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func threadModel(at index: Int) -> ThreadModel? {
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guard index < threads.count else {
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return nil
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}
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return model(forThread: threads[index])
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}
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var titleModel: ThreadRoomTitleModel {
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guard let room = session.room(withRoomId: roomId) else {
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return .empty
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}
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let avatarViewData = AvatarViewData(matrixItemId: room.matrixItemId,
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displayName: room.displayName,
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avatarUrl: room.mxContentUri,
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mediaManager: room.mxSession.mediaManager,
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fallbackImage: AvatarFallbackImage.matrixItem(room.matrixItemId,
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room.displayName))
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let encrpytionBadge: UIImage?
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if let summary = room.summary, summary.isEncrypted, session.crypto != nil {
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encrpytionBadge = EncryptionTrustLevelBadgeImageHelper.roomBadgeImage(for: summary.roomEncryptionTrustLevel())
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} else {
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encrpytionBadge = nil
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}
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return ThreadRoomTitleModel(roomAvatar: avatarViewData,
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roomEncryptionBadge: encrpytionBadge,
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roomDisplayName: room.displayName)
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}
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private var emptyViewModel: ThreadListEmptyModel {
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switch selectedFilterType {
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case .all:
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return ThreadListEmptyModel(icon: Asset.Images.threadsIcon.image,
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title: VectorL10n.threadsEmptyTitle,
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info: VectorL10n.threadsEmptyInfoAll,
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tip: VectorL10n.threadsEmptyTip,
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showAllThreadsButtonTitle: VectorL10n.threadsEmptyShowAllThreads,
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showAllThreadsButtonHidden: true)
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case .myThreads:
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return ThreadListEmptyModel(icon: Asset.Images.threadsIcon.image,
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title: VectorL10n.threadsEmptyTitle,
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info: VectorL10n.threadsEmptyInfoMy,
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tip: nil,
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showAllThreadsButtonTitle: VectorL10n.threadsEmptyShowAllThreads,
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showAllThreadsButtonHidden: false)
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}
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}
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// MARK: - Private
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private func model(forThread thread: MXThread) -> ThreadModel {
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let rootAvatarViewData: AvatarViewData?
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let rootMessageSender: MXUser?
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let lastAvatarViewData: AvatarViewData?
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let lastMessageSender: MXUser?
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let rootMessageText = rootMessageText(forThread: thread)
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let (lastMessageText, lastMessageTime) = lastMessageTextAndTime(forThread: thread)
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let notificationStatus = ThreadNotificationStatus(withThread: thread)
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// root message
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if let rootMessage = thread.rootMessage, let senderId = rootMessage.sender {
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rootMessageSender = session.user(withUserId: rootMessage.sender)
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let fallbackImage = AvatarFallbackImage.matrixItem(senderId,
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rootMessageSender?.displayname)
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rootAvatarViewData = AvatarViewData(matrixItemId: senderId,
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displayName: rootMessageSender?.displayname,
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avatarUrl: rootMessageSender?.avatarUrl,
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mediaManager: session.mediaManager,
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fallbackImage: fallbackImage)
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} else {
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rootAvatarViewData = nil
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rootMessageSender = nil
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}
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// last message
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if let lastMessage = thread.lastMessage, let senderId = lastMessage.sender {
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lastMessageSender = session.user(withUserId: lastMessage.sender)
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let fallbackImage = AvatarFallbackImage.matrixItem(senderId,
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lastMessageSender?.displayname)
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lastAvatarViewData = AvatarViewData(matrixItemId: senderId,
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displayName: lastMessageSender?.displayname,
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avatarUrl: lastMessageSender?.avatarUrl,
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mediaManager: session.mediaManager,
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fallbackImage: fallbackImage)
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} else {
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lastAvatarViewData = nil
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lastMessageSender = nil
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}
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let summaryModel = ThreadSummaryModel(numberOfReplies: thread.numberOfReplies,
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lastMessageSenderAvatar: lastAvatarViewData,
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lastMessageText: lastMessageText)
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return ThreadModel(rootMessageSenderUserId: rootMessageSender?.userId,
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rootMessageSenderAvatar: rootAvatarViewData,
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rootMessageSenderDisplayName: rootMessageSender?.displayname,
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rootMessageText: rootMessageText,
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rootMessageRedacted: thread.rootMessage?.isRedactedEvent() ?? false,
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lastMessageTime: lastMessageTime,
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summaryModel: summaryModel,
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notificationStatus: notificationStatus)
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}
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private func rootMessageText(forThread thread: MXThread) -> NSAttributedString? {
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guard let eventFormatter = eventFormatter else {
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return nil
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}
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guard let message = thread.rootMessage else {
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return nil
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}
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if message.isReply(), let newMessage = message.copy() as? MXEvent {
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var jsonDict = newMessage.isEncrypted ? newMessage.clear?.jsonDictionary() : newMessage.jsonDictionary()
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if var content = jsonDict?["content"] as? [String: Any] {
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content.removeValue(forKey: "format")
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content.removeValue(forKey: "formatted_body")
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content.removeValue(forKey: kMXEventRelationRelatesToKey)
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if let replyText = MXReplyEventParser().parse(newMessage)?.bodyParts.replyText {
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content["body"] = replyText
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}
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jsonDict?["content"] = content
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}
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let trimmedMessage = MXEvent(fromJSON: jsonDict)
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let formatterError = UnsafeMutablePointer<MXKEventFormatterError>.allocate(capacity: 1)
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return eventFormatter.attributedString(from: trimmedMessage,
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with: roomState,
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error: formatterError)
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}
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let formatterError = UnsafeMutablePointer<MXKEventFormatterError>.allocate(capacity: 1)
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return eventFormatter.attributedString(from: message,
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with: roomState,
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error: formatterError)
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}
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private func lastMessageTextAndTime(forThread thread: MXThread) -> (NSAttributedString?, String?) {
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guard let eventFormatter = eventFormatter else {
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return (nil, nil)
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}
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guard let message = thread.lastMessage else {
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return (nil, nil)
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}
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let formatterError = UnsafeMutablePointer<MXKEventFormatterError>.allocate(capacity: 1)
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return (
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eventFormatter.attributedString(from: message,
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with: roomState,
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error: formatterError),
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eventFormatter.dateString(from: message, withTime: true)
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)
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}
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private func loadData(showLoading: Bool = true) {
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if showLoading {
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viewState = .loading
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}
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switch selectedFilterType {
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case .all:
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threads = session.threadingService.threads(inRoom: roomId)
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case .myThreads:
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threads = session.threadingService.participatedThreads(inRoom: roomId)
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}
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if threads.isEmpty {
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viewState = .empty(emptyViewModel)
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return
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}
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threadsLoaded()
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}
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private func threadsLoaded() {
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guard let eventFormatter = session.roomSummaryUpdateDelegate as? MXKEventFormatter,
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let room = session.room(withRoomId: roomId) else {
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// go into loaded state
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self.viewState = .loaded
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return
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}
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room.state { [weak self] roomState in
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guard let self = self else { return }
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self.eventFormatter = eventFormatter
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self.roomState = roomState
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// go into loaded state
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self.viewState = .loaded
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}
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}
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private func selectThread(_ index: Int) {
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guard index < threads.count else {
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return
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}
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let thread = threads[index]
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coordinatorDelegate?.threadListViewModelDidSelectThread(self, thread: thread)
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}
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private func longPressThread(_ index: Int) {
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guard index < threads.count else {
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return
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}
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longPressedThread = threads[index]
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viewState = .showingLongPressActions(index)
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}
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private func actionViewInRoom() {
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guard let thread = longPressedThread else {
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return
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}
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coordinatorDelegate?.threadListViewModelDidSelectThreadViewInRoom(self, thread: thread)
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longPressedThread = nil
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}
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private func actionCopyLinkToThread() {
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guard let thread = longPressedThread else {
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return
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}
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if let permalink = MXTools.permalink(toEvent: thread.id, inRoom: thread.roomId),
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let url = URL(string: permalink) {
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MXKPasteboardManager.shared.pasteboard.url = url
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viewState = .toastForCopyLink
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}
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longPressedThread = nil
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}
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private func actionShare() {
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guard let thread = longPressedThread,
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let index = threads.firstIndex(of: thread) else {
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return
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}
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if let permalink = MXTools.permalink(toEvent: thread.id, inRoom: thread.roomId),
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let url = URL(string: permalink) {
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viewState = .share(url, index)
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}
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longPressedThread = nil
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}
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private func cancelOperations() {
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self.currentOperation?.cancel()
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}
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}
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extension ThreadListViewModel: MXThreadingServiceDelegate {
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func threadingServiceDidUpdateThreads(_ service: MXThreadingService) {
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loadData(showLoading: false)
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}
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}
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