Created
February 3, 2025 19:35
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| public final class MultiListenerBindable<T> { | |
| public typealias Handler = (T) -> Void | |
| public typealias TargetHandler<Target> = (Target, T) -> Void | |
| private var listeners: [UUID: Handler] = [:] | |
| public var value: T { | |
| didSet { | |
| notifyListeners() | |
| } | |
| } | |
| public init(_ value: T) { | |
| self.value = value | |
| } | |
| @discardableResult | |
| public func bind(listener: @escaping Handler) -> UUID { | |
| let id = UUID() | |
| listeners[id] = listener | |
| notifyListeners() | |
| return id | |
| } | |
| public func bind<Target: AnyObject>(to target: Target, | |
| listener: @escaping TargetHandler<Target>) -> UUID { | |
| let id = UUID() | |
| listeners[id] = { [weak target] value in | |
| guard let target else { return } | |
| listener(target, value) | |
| } | |
| notifyListeners() | |
| return id | |
| } | |
| public func unbind(id: UUID) { | |
| listeners.removeValue(forKey: id) | |
| } | |
| private func notifyListeners() { | |
| listeners.values.forEach { $0(value) } | |
| } | |
| } |
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