34 lines
809 B
Swift
34 lines
809 B
Swift
//
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// OptionalObservedObject.swift
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// ComposeUI
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//
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// Created by Shadowfacts on 4/15/23.
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//
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import SwiftUI
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import Combine
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@propertyWrapper
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struct OptionalObservedObject<T: ObservableObject>: DynamicProperty {
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private class Republisher: ObservableObject {
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var cancellable: AnyCancellable?
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var wrapped: T? {
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didSet {
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cancellable?.cancel()
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cancellable = wrapped?.objectWillChange
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.receive(on: RunLoop.main)
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.sink { [unowned self] _ in
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self.objectWillChange.send()
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}
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}
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}
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}
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@StateObject private var republisher = Republisher()
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var wrappedValue: T?
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func update() {
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republisher.wrapped = wrappedValue
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}
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}
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