增加换肤功能

TUIKit/TUIRoomKit/Source/Common/Basic/Fluxor/Effects.swift

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+/*
+ * Fluxor
+ *  Copyright (c) Morten Bjerg Gregersen 2020
+ *  MIT license, see LICENSE file for details
+ */
+
+#if USE_OPENCOMBINE
+import OpenCombine
+#else
+import Combine
+#endif
+
+/**
+ A side effect that happens as a response to a dispatched `Action`.
+
+ An `Effect` can:
+ - give a new `Action` to dispatch (a `dispatchingOne` effect)
+ - give an array of new `Action`s to dispatch (a `dispatchingMultiple` effect)
+ - give nothing (a `nonDispatching` effect)
+ */
+public enum Effect<Environment> {
+    /// An `Effect` that publishes an `Action` to dispatch.
+    case dispatchingOne(_ publisher: (AnyPublisher<Action, Never>, Environment) -> AnyPublisher<Action, Never>)
+    /// An `Effect` that publishes multiple `Action`s to dispatch.
+    case dispatchingMultiple(_ publisher: (AnyPublisher<Action, Never>, Environment) -> AnyPublisher<[Action], Never>)
+    /// An `Effect` that handles the action but doesn't publish a new `Action`.
+    case nonDispatching(_ cancellable: (AnyPublisher<Action, Never>, Environment) -> AnyCancellable)
+}
+
+/**
+ A collection of `Effect`s.
+
+ The only requirement for the protocol is to specify the type of the `Environment`
+ which should be used in the `Effect`s. The properties have default implementations.
+ */
+public protocol Effects {
+    /// The environment set up in the `Store` passed to every `Effect`.
+    associatedtype Environment
+    /**
+     The `Effect`s to register on the `Store`. The default implementation takes all the `Effect`s in the type,
+     
+     It is possible to implement the property manually to only enable a subset of `Effect`s to enable.
+     */
+    var enabledEffects: [Effect<Environment>] { get }
+    /// The identifier for the `Effects`. The default implementation is just the name of the type.
+    static var id: String { get }
+}
+
+public extension Effects {
+    var enabledEffects: [Effect<Environment>] {
+        Mirror(reflecting: self).children.compactMap { $0.value as? Effect<Environment> }
+    }
+
+    static var id: String { .init(describing: Self.self) }
+}