Imported Upstream version 4.6.0.125

Former-commit-id: a2155e9bd80020e49e72e86c44da02a8ac0e57a4

mcs/class/referencesource/System.Web.Extensions/ui/UpdatePanelTriggerCollection.cs

@@ -0,0 +1,81 @@
+//------------------------------------------------------------------------------
+// <copyright file="UpdatePanelTriggerCollection.cs" company="Microsoft">
+//     Copyright (c) Microsoft Corporation.  All rights reserved.
+// </copyright>
+//------------------------------------------------------------------------------
+ 
+namespace System.Web.UI {
+    using System;
+    using System.Collections.ObjectModel;
+    using System.Diagnostics.CodeAnalysis;
+    using System.Web;
+
+    public class UpdatePanelTriggerCollection : Collection<UpdatePanelTrigger> {
+        private bool _initialized;
+        private UpdatePanel _owner;
+
+        public UpdatePanelTriggerCollection(UpdatePanel owner) {
+            if (owner == null) {
+                throw new ArgumentNullException("owner");
+            }
+            _owner = owner;
+        }
+
+        public UpdatePanel Owner {
+            get {
+                return _owner;
+            }
+        }
+
+        [SuppressMessage("Microsoft.Security", "CA2123:OverrideLinkDemandsShouldBeIdenticalToBase")]
+        protected override void ClearItems() {
+            foreach (UpdatePanelTrigger trigger in this) {
+                trigger.SetOwner(null);
+            }
+            base.ClearItems();
+        }
+
+        internal bool HasTriggered() {
+            foreach (UpdatePanelTrigger trigger in this) {
+                if (trigger.HasTriggered()) {
+                    return true;
+                }
+            }
+
+            return false;
+        }
+
+        internal void Initialize() {
+            foreach (UpdatePanelTrigger trigger in this) {
+                trigger.Initialize();
+            }
+            _initialized = true;
+        }
+
+        [SuppressMessage("Microsoft.Security", "CA2123:OverrideLinkDemandsShouldBeIdenticalToBase")]
+        protected override void InsertItem(int index, UpdatePanelTrigger item) {
+            item.SetOwner(Owner);
+            if (_initialized) {
+                item.Initialize();
+            }
+            base.InsertItem(index, item);
+        }
+
+        [SuppressMessage("Microsoft.Security", "CA2123:OverrideLinkDemandsShouldBeIdenticalToBase")]
+        protected override void RemoveItem(int index) {
+            this[index].SetOwner(null);
+            base.RemoveItem(index);
+        }
+
+        [SuppressMessage("Microsoft.Security", "CA2123:OverrideLinkDemandsShouldBeIdenticalToBase")]
+        protected override void SetItem(int index, UpdatePanelTrigger item) {
+            this[index].SetOwner(null);
+
+            item.SetOwner(Owner);
+            if (_initialized) {
+                item.Initialize();
+            }
+            base.SetItem(index, item);
+        }
+    }
+}