Created
March 24, 2022 16:33
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| import UIKit | |
| protocol MessageDelegate: AnyObject { | |
| func didPressButton() -> Void | |
| } | |
| /// Represents a view that will send messages, e.g. button presses. | |
| final class SenderView<MyMessageDelegate: MessageDelegate>: UIView { | |
| private let myButton: UIButton | |
| public weak var messageDelegate: MyMessageDelegate? = nil | |
| @MainActor | |
| init() { | |
| self.myButton = .init() | |
| super.init(frame: .zero) | |
| let action = UIAction { [weak self] (action) in | |
| /// TODO: Send message to `ReceiverView`... | |
| self?.messageDelegate?.didPressButton() | |
| } | |
| myButton.addAction(action, for: .touchUpInside) | |
| } | |
| required init?(coder: NSCoder) { | |
| fatalError("init(coder:) has not been implemented") | |
| } | |
| } | |
| /// Represents a view that responds to events. | |
| final class ReceiverView: UIView { | |
| @MainActor | |
| init() { | |
| super.init(frame: .zero) | |
| } | |
| func didReceiveMessage() { | |
| print("Got a message from SenderView!") | |
| } | |
| required init?(coder: NSCoder) { | |
| fatalError("init(coder:) has not been implemented") | |
| } | |
| } | |
| extension ReceiverView: MessageDelegate { | |
| func didPressButton() { | |
| self.didReceiveMessage() | |
| } | |
| } | |
| /// Represents some controller coordinating senders and receivers. | |
| final class MyViewController : UIViewController { | |
| let senderView: SenderView<ReceiverView> | |
| let receiverView: ReceiverView | |
| @MainActor | |
| init() { | |
| senderView = .init() | |
| receiverView = .init() | |
| super.init(nibName: nil, bundle: nil) | |
| view.addSubview(senderView) | |
| view.addSubview(receiverView) | |
| /// Layout stuff here... | |
| /// TODO: connect sender to receiver... | |
| senderView.messageDelegate = receiverView | |
| } | |
| required init?(coder: NSCoder) { | |
| fatalError("init(coder:) has not been implemented") | |
| } | |
| } |
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