Files
letro-ios/ElementX/Sources/Screens/ThreadTimelineScreen/ThreadTimelineScreenCoordinator.swift
2026-04-14 18:27:34 +02:00

177 lines
9.3 KiB
Swift

//
// Copyright 2025 Element Creations Ltd.
// Copyright 2022-2025 New Vector Ltd.
//
// SPDX-License-Identifier: AGPL-3.0-only OR LicenseRef-Element-Commercial.
// Please see LICENSE files in the repository root for full details.
//
import Combine
import HTMLParser
import SwiftUI
import WysiwygComposer
struct ThreadTimelineScreenCoordinatorParameters {
let userSession: UserSessionProtocol
let roomProxy: JoinedRoomProxyProtocol
let focussedEventID: String?
let timelineController: TimelineControllerProtocol
let mediaPlayerProvider: MediaPlayerProviderProtocol
let emojiProvider: EmojiProviderProtocol
let linkMetadataProvider: LinkMetadataProviderProtocol
let completionSuggestionService: CompletionSuggestionServiceProtocol
let appMediator: AppMediatorProtocol
let appSettings: AppSettings
let analytics: AnalyticsService
let composerDraftService: ComposerDraftServiceProtocol
let timelineControllerFactory: TimelineControllerFactoryProtocol
let userIndicatorController: UserIndicatorControllerProtocol
}
enum ThreadTimelineScreenCoordinatorAction {
case presentReportContent(itemID: TimelineItemIdentifier, senderID: String)
case presentMediaUploadPicker(mode: MediaPickerScreenMode)
case presentMediaUploadPreviewScreen(mediaURLs: [URL])
case presentLocationPicker
case presentLocationViewer(StaticLocationData)
case presentLiveLocationViewer(sender: TimelineItemSender, initialLiveLocationShare: LiveLocationShare)
case presentPollForm(mode: PollFormMode)
case presentEmojiPicker(itemID: TimelineItemIdentifier, selectedEmojis: Set<String>)
case presentRoomMemberDetails(userID: String)
case presentMessageForwarding(forwardingItem: MessageForwardingItem)
case presentResolveSendFailure(failure: TimelineItemSendFailure.VerifiedUser, sendHandle: SendHandleProxy)
}
final class ThreadTimelineScreenCoordinator: CoordinatorProtocol {
private let parameters: ThreadTimelineScreenCoordinatorParameters
private let viewModel: ThreadTimelineScreenViewModelProtocol
private let timelineViewModel: TimelineViewModelProtocol
private var composerViewModel: ComposerToolbarViewModelProtocol
private var cancellables = Set<AnyCancellable>()
private let actionsSubject: PassthroughSubject<ThreadTimelineScreenCoordinatorAction, Never> = .init()
var actions: AnyPublisher<ThreadTimelineScreenCoordinatorAction, Never> {
actionsSubject.eraseToAnyPublisher()
}
init(parameters: ThreadTimelineScreenCoordinatorParameters) {
self.parameters = parameters
viewModel = ThreadTimelineScreenViewModel(roomProxy: parameters.roomProxy, userSession: parameters.userSession)
timelineViewModel = TimelineViewModel(roomProxy: parameters.roomProxy,
focussedEventID: parameters.focussedEventID,
timelineController: parameters.timelineController,
userSession: parameters.userSession,
mediaPlayerProvider: parameters.mediaPlayerProvider,
userIndicatorController: parameters.userIndicatorController,
appMediator: parameters.appMediator,
appSettings: parameters.appSettings,
analyticsService: parameters.analytics,
emojiProvider: parameters.emojiProvider,
linkMetadataProvider: parameters.linkMetadataProvider,
timelineControllerFactory: parameters.timelineControllerFactory)
let wysiwygViewModel = WysiwygComposerViewModel(minHeight: ComposerConstant.minHeight,
maxCompressedHeight: ComposerConstant.maxHeight,
maxExpandedHeight: ComposerConstant.maxHeight,
parserStyle: .elementX)
composerViewModel = ComposerToolbarViewModel(initialText: nil,
roomProxy: parameters.roomProxy,
wysiwygViewModel: wysiwygViewModel,
completionSuggestionService: parameters.completionSuggestionService,
mediaProvider: parameters.userSession.mediaProvider,
mentionDisplayHelper: ComposerMentionDisplayHelper(timelineContext: timelineViewModel.context),
appSettings: parameters.appSettings,
analyticsService: parameters.analytics,
composerDraftService: parameters.composerDraftService)
}
func start() {
viewModel.actionsPublisher
.sink { [weak self] action in
guard let self else { return }
switch action {
case .displayMessageForwarding(let forwardingItem):
actionsSubject.send(.presentMessageForwarding(forwardingItem: forwardingItem))
}
}
.store(in: &cancellables)
timelineViewModel.actions
.sink { [weak self] action in
guard let self else { return }
switch action {
case .displayEmojiPicker(let itemID, let selectedEmojis):
actionsSubject.send(.presentEmojiPicker(itemID: itemID, selectedEmojis: selectedEmojis))
case .displayReportContent(let itemID, let senderID):
actionsSubject.send(.presentReportContent(itemID: itemID, senderID: senderID))
case .displayCameraPicker:
actionsSubject.send(.presentMediaUploadPicker(mode: .init(source: .camera, selectionType: .multiple)))
case .displayMediaPicker:
actionsSubject.send(.presentMediaUploadPicker(mode: .init(source: .photoLibrary, selectionType: .multiple)))
case .displayDocumentPicker:
actionsSubject.send(.presentMediaUploadPicker(mode: .init(source: .documents, selectionType: .multiple)))
case .displayMediaPreview(let mediaPreviewViewModel):
viewModel.displayMediaPreview(mediaPreviewViewModel)
case .displayLocationPicker:
actionsSubject.send(.presentLocationPicker)
case .displayLocation(let location):
actionsSubject.send(.presentLocationViewer(location))
case .displayLiveLocation(let sender, let initialLiveLocationShare):
actionsSubject.send(.presentLiveLocationViewer(sender: sender, initialLiveLocationShare: initialLiveLocationShare))
case .displayPollForm(let mode):
actionsSubject.send(.presentPollForm(mode: mode))
case .displayMediaUploadPreviewScreen(let mediaURLs):
actionsSubject.send(.presentMediaUploadPreviewScreen(mediaURLs: mediaURLs))
case .displaySenderDetails(userID: let userID):
actionsSubject.send(.presentRoomMemberDetails(userID: userID))
case .displayMessageForwarding(let forwardingItem):
actionsSubject.send(.presentMessageForwarding(forwardingItem: forwardingItem))
case .displayResolveSendFailure(let failure, let sendHandle):
actionsSubject.send(.presentResolveSendFailure(failure: failure,
sendHandle: sendHandle))
case .hasScrolled, .displayRoom, .displayMediaDetails:
break
case .composer(let action):
composerViewModel.process(timelineAction: action)
case .viewInRoomTimeline, .displayThread:
fatalError("The action: \(action) should not be sent to this coordinator")
}
}
.store(in: &cancellables)
composerViewModel.actions
.sink { [weak self] action in
guard let self else { return }
timelineViewModel.process(composerAction: action)
}
.store(in: &cancellables)
// Loading the draft requires the subscriptions to be set up first otherwise
// the room won't be be able to propagate the information to the composer.
composerViewModel.start()
}
func stop() {
composerViewModel.stop()
viewModel.stop()
}
func toPresentable() -> AnyView {
let composerToolbar = ComposerToolbar(context: composerViewModel.context)
return AnyView(ThreadTimelineScreen(context: viewModel.context,
timelineContext: timelineViewModel.context,
composerToolbar: composerToolbar))
}
func focusOnEvent(eventID: String) {
Task { await timelineViewModel.focusOnEvent(eventID: eventID) }
}
}