89eae00479
* Switch license file to AGPL * Update file copyright headers * Update the default project file header
45 lines
1.5 KiB
Swift
45 lines
1.5 KiB
Swift
//
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// Copyright 2022-2024 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 Foundation
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/// A CoordinatorProtocol wrapper and type erasing component that allows
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/// dynamically presenting arbitrary screens
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@MainActor
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class NavigationModule: Identifiable, Hashable {
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let id = UUID()
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/// The NavigationStack has a tendency to hold on to path items for longer than needed. We work around that by manually nilling the coordinator
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/// when a NavigationModule is dismissed, reason why this is an optional property
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/// As the NavigationModule is just a wrapper multiple instances of it continuing living is of no consequence
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/// https://stackoverflow.com/questions/73885353/found-a-strange-behaviour-of-state-when-combined-to-the-new-navigation-stack/
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var coordinator: (any CoordinatorProtocol)?
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var dismissalCallback: (() -> Void)?
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init(_ coordinator: any CoordinatorProtocol, dismissalCallback: (() -> Void)? = nil) {
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self.coordinator = coordinator
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self.dismissalCallback = dismissalCallback
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}
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func tearDown() {
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coordinator?.stop()
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coordinator = nil
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let callback = dismissalCallback
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dismissalCallback = nil
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callback?()
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}
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nonisolated static func == (lhs: NavigationModule, rhs: NavigationModule) -> Bool {
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lhs.id == rhs.id
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}
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nonisolated func hash(into hasher: inout Hasher) {
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hasher.combine(id)
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}
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}
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