Queue

ExampleProject/ExamplesScreen.swift

@@ -26,6 +26,8 @@ struct ExamplesScreen: View {
   @State var showSubtitle = false
   @State var backgroundType: StatusBarNotificationBackgroundType = .pill
 
+  @State var queueContent: [StatusBarNotification]? = nil // for queue counter
+
   func showDefaultNotification(_ text: String, completion: @escaping (NotificationPresenter) -> ()) {
     let styleName = NotificationPresenter.shared.addStyle(named: "default_sample") { style in
       style.backgroundStyle.backgroundType = backgroundType
@@ -299,6 +301,31 @@ struct ExamplesScreen: View {
           }
         }
       }
+
+      Section("Queue") {
+        Button("Clear queue") {
+          NotificationPresenter.shared.clearQueue()
+            queueContent = NotificationPresenter.shared.queue
+        }
+        Button("Add to queue") {
+          NotificationPresenter.shared.addToQueue(notification: StatusBarNotification(title: "From queue", styleName: "default_sample"))
+            queueContent = NotificationPresenter.shared.queue
+        }
+        Button("Present first from queue") {
+          NotificationPresenter.shared.presentFromQueue(duration: 5.0)
+          if NotificationPresenter.shared.queue.count == 0 {
+            NotificationPresenter.shared.present("Queue is empty", styleName: "default_sample", duration: 5.0)
+          }
+            queueContent = NotificationPresenter.shared.queue
+        }
+        Button("Present queue") {
+          NotificationPresenter.shared.presentQueue()
+            queueContent = NotificationPresenter.shared.queue
+        }
+          if queueContent != nil {
+              Text("\(queueContent!.count) notification\(queueContent!.count == 1 ? "" : "s") in queue")
+          }
+      }
     }
     .navigationTitle(title)
     .navigationBarTitleDisplayMode(.inline)

JDStatusBarNotification/Public/NotificationPresenter.swift

@@ -6,6 +6,24 @@
 //
 
 import SwiftUI
+import Foundation
+
+/// Struct for storing notifications in queue
+public struct StatusBarNotification {
+    public let title: String?
+    public let subtitle: String?
+    public let style: StatusBarNotificationStyle?
+    public let styleName: String
+    public let completion: NotificationPresenter.Completion?
+
+    public init(title: String?, subtitle: String? = nil, style: StatusBarNotificationStyle? = nil,  styleName: String, completion: NotificationPresenter.Completion? = nil) {
+        self.title = title
+        self.subtitle = subtitle
+        self.style = style
+        self.styleName = styleName
+        self.completion = completion
+    }
+}
 
 /**
  * The NotificationPresenter let's you present notifications below the statusBar.
@@ -28,6 +46,8 @@ public class NotificationPresenter: NSObject, NotificationWindowDelegate {
   var overlayWindow: NotificationWindow?
   var styleCache: StyleCache
 
+  public private(set) var queue: [StatusBarNotification]
+
   /// Provides access to the shared presenter. This is the entry point to present, style and dismiss notifications.
   ///
   /// - Returns: An initialized ``NotificationPresenter`` instance.
@@ -36,6 +56,7 @@ public class NotificationPresenter: NSObject, NotificationWindowDelegate {
 
   private override init() {
     styleCache = StyleCache()
+    queue = []
   }
 
   /// Called upon animation completion.
@@ -72,6 +93,41 @@ public class NotificationPresenter: NSObject, NotificationWindowDelegate {
     return view
   }
 
+  // MARK: - Queue
+
+  /// Adds a ``StatusBarNotification`` to the queue (FIFO).
+  /// - Parameter notification: the notification to store in the queue.
+  public func addToQueue(notification: StatusBarNotification) {
+    queue.append(notification)
+  }
+
+  /// Removes all elements from the queue and dismisses the current notification.
+  public func clearQueue() {
+    queue = []
+    dismiss()
+  }
+
+  /// Presents the first notification from the queue.
+  /// - Parameter duration: Duration in secons.
+  public func presentFromQueue(duration: Double? = nil) {
+    if queue.count > 0 {
+      present(queue[0].title ?? "", subtitle: queue[0].subtitle, styleName: queue[0].styleName, duration: duration, completion: queue[0].completion)
+      queue.remove(at: 0)
+    }
+  }
+
+  /// Presents all notification of the queue. Recursively adds an async job for `duration` + 0.5 seconds until queue is empty.
+  /// NOTE: `duration` doesn't support `nil` yet because the notifications are displayed all at a time by default and the time until dismissal must be known.
+  /// - Parameter duration: duration in seconds.
+  public func presentQueue(duration: Double = 2.0) {
+    if self.queue.count > 0 {
+      self.presentFromQueue(duration: duration)
+        DispatchQueue.main.asyncAfter(deadline: DispatchTime.now() + duration + 0.5) {
+        self.presentQueue()
+      }
+    }
+  }
+
   // MARK: - NotificationWindowDelegate
 
   func didDismissStatusBar() {