update top header graph view when custom color changes

code cleanup

Shared/Persisence/Persistence.swift

@@ -12,9 +12,7 @@ class PersistenceController {
     @AppStorage(UserDefaultsStore.Keys.useCloudKit.rawValue, store: GroupUserDefaults.groupDefaults) private var useCloudKit = false
     
     static let shared = PersistenceController.persistenceController
-    
-    public var listeners = [(() -> Void)]()
-    
+        
     private static var persistenceController: PersistenceController {
         return PersistenceController(inMemory: false)
     }
@@ -23,8 +21,14 @@ class PersistenceController {
         return PersistenceController.shared.container.viewContext
     }
     
+    public lazy var childContext: NSManagedObjectContext = {
+        NSManagedObjectContext(concurrencyType: .mainQueueConcurrencyType)
+    }()
+    
     public var switchContainerListeners = [(() -> Void)]()
     
+    private var editedDataClosure = [() -> Void]()
+    
     public var earliestEntry: MoodEntry? {
         let fetchRequest = NSFetchRequest<MoodEntry>(entityName: "MoodEntry")
         fetchRequest.sortDescriptors = [NSSortDescriptor(key: "forDate", ascending: true)]
@@ -50,6 +54,16 @@ class PersistenceController {
             item()
         }
     }
+    
+    public func addNewDataListener(closure: @escaping (() -> Void)) {
+        editedDataClosure.append(closure)
+    }
+    
+    public func runDataListeners() {
+        for closure in editedDataClosure {
+            closure()
+        }
+    }
 
     private func setupContainer() -> NSPersistentContainer {
         if useCloudKit {
@@ -79,12 +93,6 @@ class PersistenceController {
     init(inMemory: Bool = false) {
         container = setupContainer()
     }
-    
-    func updateListeners() {
-        for listener in listeners {
-            listener()
-        }
-    }
 }
 
 extension NSManagedObjectContext {