6160c44d67
* Update copyright holding and dates * compound IDE Macros updated * update copyright * update copyrights done * update templates and README
102 lines
3.7 KiB
Swift
102 lines
3.7 KiB
Swift
//
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// Copyright 2025 Element Creations Ltd.
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// Copyright 2022-2025 New Vector Ltd.
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//
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// SPDX-License-Identifier: AGPL-3.0-only OR LicenseRef-Element-Commercial.
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// Please see LICENSE files in the repository root for full details.
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//
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import Combine
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import SwiftUI
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typealias GlobalSearchScreenViewModelType = StateStoreViewModel<GlobalSearchScreenViewState, GlobalSearchScreenViewAction>
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class GlobalSearchScreenViewModel: GlobalSearchScreenViewModelType, GlobalSearchScreenViewModelProtocol {
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private let roomSummaryProvider: RoomSummaryProviderProtocol
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private var actionsSubject: PassthroughSubject<GlobalSearchScreenViewModelAction, Never> = .init()
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var actions: AnyPublisher<GlobalSearchScreenViewModelAction, Never> {
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actionsSubject.eraseToAnyPublisher()
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}
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init(roomSummaryProvider: RoomSummaryProviderProtocol,
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mediaProvider: MediaProviderProtocol) {
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self.roomSummaryProvider = roomSummaryProvider
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super.init(initialViewState: GlobalSearchScreenViewState(bindings: .init(searchQuery: "")),
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mediaProvider: mediaProvider)
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roomSummaryProvider.roomListPublisher
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.receive(on: DispatchQueue.main)
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.sink { [weak self] summaries in
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self?.updateRooms(with: summaries)
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}
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.store(in: &cancellables)
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context.$viewState
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.map(\.bindings.searchQuery)
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.removeDuplicates()
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.sink { [weak self] searchQuery in
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if searchQuery.isEmpty {
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self?.roomSummaryProvider.setFilter(.all(filters: []))
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} else {
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self?.roomSummaryProvider.setFilter(.search(query: searchQuery))
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}
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}
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.store(in: &cancellables)
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updateRooms(with: roomSummaryProvider.roomListPublisher.value)
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}
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func stop() {
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// This is a shared provider so we should reset the filtering when we are done with the view
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roomSummaryProvider.setFilter(.all(filters: []))
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}
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// MARK: - Public
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override func process(viewAction: GlobalSearchScreenViewAction) {
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MXLog.info("View model: received view action: \(viewAction)")
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switch viewAction {
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case .dismiss:
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actionsSubject.send(.dismiss)
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case .select(let roomID):
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actionsSubject.send(.select(roomID: roomID))
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case .reachedTop:
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updateVisibleRange(edge: .top)
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case .reachedBottom:
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updateVisibleRange(edge: .bottom)
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}
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}
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// MARK: - Private
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private func updateRooms(with summaries: [RoomSummary]) {
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state.rooms = summaries.compactMap { summary in
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GlobalSearchRoom(id: summary.id,
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title: summary.name,
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description: summary.roomListDescription,
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avatar: summary.avatar)
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}
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}
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/// The actual range values don't matter as long as they contain the lower
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/// or upper bounds. updateVisibleRange is a hybrid API that powers both
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/// sliding sync visible range update and list paginations
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/// For lists other than the home screen one we don't care about visible ranges,
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/// we just need the respective bounds to be there to trigger a next page load or
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/// a reset to just one page
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private func updateVisibleRange(edge: UIRectEdge) {
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switch edge {
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case .top:
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roomSummaryProvider.updateVisibleRange(0..<0)
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case .bottom:
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let roomCount = roomSummaryProvider.roomListPublisher.value.count
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roomSummaryProvider.updateVisibleRange(roomCount..<roomCount)
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default:
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break
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}
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}
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}
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