67 lines
2.3 KiB
Swift
67 lines
2.3 KiB
Swift
//
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// Copyright 2021-2024 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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import UIKit
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import CommonKit
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import MatrixSDK
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/// A presenter responsible for showing / hiding a toast view for loading spinners or success messages.
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/// It is managed by an `UserIndicator`, meaning the `present` and `dismiss` methods will be called when the parent `UserIndicator` starts or completes.
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class ToastViewPresenter: UserIndicatorViewPresentable {
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private let viewState: ToastViewState
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private let presentationContext: UserIndicatorPresentationContext
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private weak var view: UIView?
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private var animator: UIViewPropertyAnimator?
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init(viewState: ToastViewState, presentationContext: UserIndicatorPresentationContext) {
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self.viewState = viewState
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self.presentationContext = presentationContext
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}
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func present() {
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guard let viewController = presentationContext.indicatorPresentingViewController else {
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return
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}
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let view = RoundedToastView(viewState: viewState)
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view.update(theme: ThemeService.shared().theme)
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self.view = view
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view.translatesAutoresizingMaskIntoConstraints = false
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viewController.view.addSubview(view)
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NSLayoutConstraint.activate([
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view.centerXAnchor.constraint(equalTo: viewController.view.centerXAnchor),
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view.topAnchor.constraint(equalTo: viewController.view.safeAreaLayoutGuide.topAnchor)
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])
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view.alpha = 0
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view.transform = .init(translationX: 0, y: 5)
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animator = UIViewPropertyAnimator(duration: 0.2, curve: .easeOut) {
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view.alpha = 1
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view.transform = .identity
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}
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animator?.startAnimation()
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}
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func dismiss() {
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guard let view = view, view.superview != nil else {
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return
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}
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animator?.stopAnimation(true)
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animator = UIViewPropertyAnimator(duration: 0.2, curve: .easeIn) {
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view.alpha = 0
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view.transform = .init(translationX: 0, y: -5)
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}
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animator?.addCompletion { _ in
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view.removeFromSuperview()
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}
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animator?.startAnimation()
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}
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}
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