+/*
+ * Copyright (c) 2023 Samsung Electronics Co., Ltd.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+extern alias TizenSystemSettings;
+using TizenSystemSettings.Tizen.System;
+
+using System;
+
+namespace Tizen.NUI
+{
+ /// <summary>
+ /// A static class which adds user handler to the SystemSettings.FontSizeChanged event.
+ /// This class also adds user handler to the last of the SystemSettings.FontSizeChanged event.
+ /// </summary>
+ internal static class SystemFontSizeChangedManager
+ {
+ static SystemFontSizeChangedManager()
+ {
+ SystemSettings.FontSizeChanged += SystemFontSizeChanged;
+ }
+
+ /// <summary>
+ /// The handler invoked last after all handlers added to the SystemSettings.FontSizeChanged event are invoked.
+ /// </summary>
+ public static event EventHandler<FontSizeChangedEventArgs> Finished;
+
+ /// <summary>
+ /// Adds the given handler to the SystemSettings.FontSizeChanged event.
+ /// </summary>
+ /// <param name="handler">A handler to be added to the event</param>
+ public static void Add(EventHandler<FontSizeChangedEventArgs> handler)
+ {
+ proxy.Add(handler);
+ }
+
+ /// <summary>
+ /// Removes the given handler from the SystemSettings.FontSizeChanged event.
+ /// </summary>
+ /// <param name="handler">A handler to be added to the event</param>
+ public static void Remove(EventHandler<FontSizeChangedEventArgs> handler)
+ {
+ proxy.Remove(handler);
+ }
+
+ private static void SystemFontSizeChanged(object sender, FontSizeChangedEventArgs args)
+ {
+ proxy.Invoke(sender, args);
+ Finished?.Invoke(sender, args);
+ }
+
+ private static WeakEvent<EventHandler<FontSizeChangedEventArgs>> proxy = new WeakEvent<EventHandler<FontSizeChangedEventArgs>>();
+ }
+}
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