Squashed 'NotifyIconWpf/' content from commit 7307bdf

git-subtree-dir: NotifyIconWpf
git-subtree-split: 7307bdf5402239df475ea38a0647901cb4b95645

NotifyIconWpf/RoutedEventHelper.cs

@@ -0,0 +1,71 @@
+using System;
+using System.Windows;
+
+namespace Hardcodet.Wpf.TaskbarNotification
+{
+    /// <summary>
+    /// Helper class used by routed events of the
+    /// <see cref="TaskbarIcon"/> class.
+    /// </summary>
+    internal static class RoutedEventHelper
+    {
+        #region RoutedEvent Helper Methods
+
+        /// <summary>
+        /// A static helper method to raise a routed event on a target UIElement or ContentElement.
+        /// </summary>
+        /// <param name="target">UIElement or ContentElement on which to raise the event</param>
+        /// <param name="args">RoutedEventArgs to use when raising the event</param>
+        internal static void RaiseEvent(DependencyObject target, RoutedEventArgs args)
+        {
+            if (target is UIElement uiElement)
+            {
+                uiElement.RaiseEvent(args);
+            }
+            else if (target is ContentElement contentElement)
+            {
+                contentElement.RaiseEvent(args);
+            }
+        }
+
+        /// <summary>
+        /// A static helper method that adds a handler for a routed event 
+        /// to a target UIElement or ContentElement.
+        /// </summary>
+        /// <param name="element">UIElement or ContentElement that listens to the event</param>
+        /// <param name="routedEvent">Event that will be handled</param>
+        /// <param name="handler">Event handler to be added</param>
+        internal static void AddHandler(DependencyObject element, RoutedEvent routedEvent, Delegate handler)
+        {
+            if (element is UIElement uie)
+            {
+                uie.AddHandler(routedEvent, handler);
+            }
+            else if (element is ContentElement ce)
+            {
+                ce.AddHandler(routedEvent, handler);
+            }
+        }
+
+        /// <summary>
+        /// A static helper method that removes a handler for a routed event 
+        /// from a target UIElement or ContentElement.
+        /// </summary>
+        /// <param name="element">UIElement or ContentElement that listens to the event</param>
+        /// <param name="routedEvent">Event that will no longer be handled</param>
+        /// <param name="handler">Event handler to be removed</param>
+        internal static void RemoveHandler(DependencyObject element, RoutedEvent routedEvent, Delegate handler)
+        {
+            if (element is UIElement uie)
+            {
+                uie.RemoveHandler(routedEvent, handler);
+            }
+            else if (element is ContentElement ce)
+            {
+                ce.RemoveHandler(routedEvent, handler);
+            }
+        }
+
+        #endregion
+    }
+}