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Merge pull request #615 from Adamant-im/dev/trello.com/c/NOZFKp1s
[trello.com/c/NOZFKp1s] New swipe/reply architecture
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110 changes: 110 additions & 0 deletions
110
Adamant/Modules/Chat/View/Managers/ChatSwipeManager.swift
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,110 @@ | ||
| // | ||
| // ChatSwipeManager.swift | ||
| // Adamant | ||
| // | ||
| // Created by Andrew G on 17.12.2024. | ||
| // Copyright © 2024 Adamant. All rights reserved. | ||
| // | ||
|
|
||
| import UIKit | ||
|
|
||
| @MainActor | ||
| final class ChatSwipeManager: NSObject { | ||
| private let viewModel: ChatViewModel | ||
| private var chatView: UIView? | ||
| private var vibrated = false | ||
|
|
||
| private var requiredSwipeOffset: CGFloat { | ||
| -UIScreen.main.bounds.size.width * 0.05 | ||
| } | ||
|
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| init(viewModel: ChatViewModel) { | ||
| self.viewModel = viewModel | ||
| super.init() | ||
| } | ||
|
|
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| func configure(chatView: UIView) { | ||
| let recognizer = UIPanGestureRecognizer( | ||
| target: self, | ||
| action: #selector(onSwipe(_:)) | ||
| ) | ||
|
|
||
| recognizer.delegate = self | ||
| chatView.addGestureRecognizer(recognizer) | ||
| self.chatView = chatView | ||
| } | ||
| } | ||
|
|
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| extension ChatSwipeManager: UIGestureRecognizerDelegate { | ||
| func gestureRecognizerShouldBegin( | ||
| _ recognizer: UIGestureRecognizer | ||
| ) -> Bool { | ||
| guard let recognizer = recognizer as? UIPanGestureRecognizer else { | ||
| return false | ||
| } | ||
|
|
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| let velocity = recognizer.velocity(in: chatView) | ||
| guard abs(velocity.x) > abs(velocity.y) else { return false } | ||
|
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| let location = recognizer.location(in: chatView) | ||
| guard let id = findChatSwipeWrapperId(location) else { return false } | ||
|
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| viewModel.updateSwipeableId(id) | ||
| return true | ||
| } | ||
|
|
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| func gestureRecognizer( | ||
| _: UIGestureRecognizer, | ||
| shouldRecognizeSimultaneouslyWith _: UIGestureRecognizer | ||
| ) -> Bool { true } | ||
| } | ||
|
|
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| private extension ChatSwipeManager { | ||
| func findChatSwipeWrapperId(_ location: CGPoint) -> String? { | ||
| var view = chatView?.hitTest(location, with: nil) | ||
|
|
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| while view != nil { | ||
| if let swipeWrapper = view as? ChatSwipeWrapper { | ||
| return swipeWrapper.model.id | ||
| } else { | ||
| view = view?.superview | ||
| } | ||
| } | ||
|
|
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| return nil | ||
| } | ||
|
|
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| @objc func onSwipe(_ recognizer: UIPanGestureRecognizer) { | ||
| let translation = recognizer.translation(in: chatView) | ||
| let offset = translation.x <= .zero | ||
| ? translation.x | ||
| : .zero | ||
|
|
||
| switch recognizer.state { | ||
| case .possible: | ||
| break | ||
| case .began: | ||
| vibrated = false | ||
| viewModel.enableScroll.send(false) | ||
| case .changed: | ||
| viewModel.updateSwipingOffset(offset) | ||
|
|
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| if offset > requiredSwipeOffset { | ||
| vibrated = false | ||
| } | ||
|
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| guard !vibrated else { break } | ||
| UIImpactFeedbackGenerator(style: .heavy).impactOccurred() | ||
| vibrated = true | ||
| case .ended, .cancelled, .failed: | ||
| if offset <= requiredSwipeOffset { | ||
| viewModel.replyMessageIfNeeded(id: viewModel.swipeableMessage.id) | ||
| } | ||
|
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| viewModel.updateSwipeableId(nil) | ||
| viewModel.enableScroll.send(true) | ||
| @unknown default: | ||
| break | ||
| } | ||
| } | ||
| } |
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