From 80c430c546a5fee59e69db14fd021f11a193751e Mon Sep 17 00:00:00 2001
From: david-swift <haenerdavid@icloud.com>
Date: Thu, 19 Sep 2024 22:32:53 +0200
Subject: [PATCH] Fix signal for asynchronous updates

---
 Sources/Model/Data Flow/Signal.swift | 12 +++++++++---
 Sources/View/StateWrapper.swift      |  6 ++++++
 2 files changed, 15 insertions(+), 3 deletions(-)

diff --git a/Sources/Model/Data Flow/Signal.swift b/Sources/Model/Data Flow/Signal.swift
index 4a1b184..e5e154c 100644
--- a/Sources/Model/Data Flow/Signal.swift	
+++ b/Sources/Model/Data Flow/Signal.swift	
@@ -8,12 +8,14 @@
 import Foundation
 
 /// A type that signalizes an action.
-public struct Signal: Sendable {
+public struct Signal: Model, Sendable {
 
     /// An action is signalized by toggling a boolean to `true` and back to `false`.
-    @State var boolean = false
+    var boolean = false
     /// A signal has a unique identifier.
     public let id: UUID = .init()
+    /// The model data.
+    public var model: ModelData?
 
     /// Whether the action has caused an update.
     public var update: Bool { boolean }
@@ -23,7 +25,11 @@ public struct Signal: Sendable {
 
     /// Activate a signal.
     public func signal() {
-        boolean = true
+        setModel { $0.boolean = true }
+    }
+
+    /// Destroy a signal.
+    mutating func destroySignal() {
         boolean = false
     }
 
diff --git a/Sources/View/StateWrapper.swift b/Sources/View/StateWrapper.swift
index 91573ff..fae0b2d 100644
--- a/Sources/View/StateWrapper.swift
+++ b/Sources/View/StateWrapper.swift
@@ -55,6 +55,12 @@ struct StateWrapper: ConvenienceWidget {
             return
         }
         await content().updateStorage(storage, data: data, updateProperties: updateProperties, type: type)
+        for property in state {
+            if var value = property.value.content.value as? Signal, value.update {
+                value.destroySignal()
+                property.value.content.value = value
+            }
+        }
     }
 
     /// Get a view storage.