89eae00479
* Switch license file to AGPL * Update file copyright headers * Update the default project file header
39 lines
1.3 KiB
Swift
39 lines
1.3 KiB
Swift
//
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// Copyright 2023, 2024 New Vector Ltd.
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//
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// SPDX-License-Identifier: AGPL-3.0-only
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// Please see LICENSE in the repository root for full details.
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//
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import Combine
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import Foundation
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extension Publisher where Self.Failure == Never {
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func weakAssign<Root: AnyObject>(to keyPath: ReferenceWritableKeyPath<Root, Self.Output>, on object: Root) -> AnyCancellable {
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sink { [weak object] value in
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object?[keyPath: keyPath] = value
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}
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}
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}
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extension Publisher where Output: Equatable, Failure == Never {
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func debounceAndRemoveDuplicates<S: Scheduler>(on scheduler: S, delay: @escaping (Output) -> S.SchedulerTimeType.Stride) -> AnyPublisher<Output, Never> {
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map { query in
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Just(query).delay(for: delay(query), scheduler: scheduler)
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}
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.switchToLatest()
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.removeDuplicates()
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.eraseToAnyPublisher()
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}
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}
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extension Publisher where Output == String, Failure == Never {
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/// Debounce text queries and remove duplicates.
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/// Clearing the text publishes the update immediately.
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func debounceTextQueriesAndRemoveDuplicates() -> AnyPublisher<String, Never> {
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debounceAndRemoveDuplicates(on: DispatchQueue.main) { query in
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query.isEmpty ? .milliseconds(0) : .milliseconds(250)
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}
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}
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}
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