Imported Upstream version 4.6.0.125

Former-commit-id: a2155e9bd80020e49e72e86c44da02a8ac0e57a4

mcs/class/referencesource/System.Web/UI/WebControls/TreeNodeBindingCollection.cs

@@ -0,0 +1,162 @@
+//------------------------------------------------------------------------------
+// <copyright file="TreeNodeBindingCollection.cs" company="Microsoft">
+//     Copyright (c) Microsoft Corporation.  All rights reserved.
+// </copyright>
+//------------------------------------------------------------------------------
+
+namespace System.Web.UI.WebControls {
+    using System;
+    using System.Collections;
+    using System.ComponentModel;
+    using System.Web;
+
+
+    /// <devdoc>
+    ///     Provides a collection of TreeNodeBinding objects
+    /// </devdoc>
+    public sealed class TreeNodeBindingCollection : StateManagedCollection {
+        private static readonly Type[] knownTypes = new Type[] { typeof(TreeNodeBinding) };
+
+        private TreeNodeBinding _defaultBinding;
+
+        internal TreeNodeBindingCollection() {
+        }
+
+        /// <devdoc>
+        /// Gets the TreeNodeBinding at the specified index
+        /// </devdoc>
+        public TreeNodeBinding this[int i] {
+            get {
+                return (TreeNodeBinding)((IList)this)[i];
+            }
+            set {
+                ((IList)this)[i] = value;
+            }
+        }
+
+        /// <devdoc>
+        /// Adds a TreeNodeBinding to the collection
+        /// </devdoc>
+        public int Add(TreeNodeBinding binding) {
+            return ((IList)this).Add(binding);
+        }
+
+        public bool Contains(TreeNodeBinding binding) {
+            return ((IList)this).Contains(binding);
+        }
+
+        public void CopyTo(TreeNodeBinding[] bindingArray, int index) {
+            base.CopyTo(bindingArray, index);
+        }
+
+        protected override object CreateKnownType(int index) {
+            return new TreeNodeBinding();
+        }
+
+        private void FindDefaultBinding() {
+            _defaultBinding = null;
+            // Look for another binding that would be a good default
+            foreach (TreeNodeBinding binding in this) {
+                if (binding.Depth == -1 && binding.DataMember.Length == 0) {
+                    _defaultBinding = binding;
+                    break;
+                }
+            }
+        }
+
+        /// <devdoc>
+        ///     Gets a TreeNodeBinding data binding definition for the specified depth or datamember
+        /// </devdoc>
+        internal TreeNodeBinding GetBinding(string dataMember, int depth) {
+            TreeNodeBinding bestMatch = null;
+            int match = 0;
+            if ((dataMember != null) && (dataMember.Length == 0)) {
+                dataMember = null;
+            }
+
+            foreach (TreeNodeBinding binding in this) {
+                if ((binding.Depth == depth)) {
+                    if (String.Equals(binding.DataMember, dataMember, StringComparison.CurrentCultureIgnoreCase)) {
+                        return binding;
+                    }
+                    else if ((match < 1) && (binding.DataMember.Length == 0)) {
+                        bestMatch = binding;
+                        match = 1;
+                    }
+                }
+                else if (String.Equals(binding.DataMember, dataMember, StringComparison.CurrentCultureIgnoreCase) &&
+                    (match < 2) &&
+                    (binding.Depth == -1)) {
+
+                    bestMatch = binding;
+                    match = 2;
+                }
+            }
+
+            if (bestMatch == null) {
+                // Check that the default binding is still suitable (VSWhidbey 358817)
+                if (_defaultBinding != null) {
+                    if (_defaultBinding.Depth != -1 || _defaultBinding.DataMember.Length != 0) {
+                        // Look for another binding that would be a good default
+                        FindDefaultBinding();
+                    }
+                    bestMatch = _defaultBinding;
+                }
+            }
+
+            return bestMatch;
+        }
+
+        protected override Type[] GetKnownTypes() {
+            return knownTypes;
+        }
+
+        public int IndexOf(TreeNodeBinding binding) {
+            return ((IList)this).IndexOf(binding);
+        }
+
+        public void Insert(int index, TreeNodeBinding binding) {
+            ((IList)this).Insert(index, binding);
+        }
+
+        protected override void OnClear() {
+            base.OnClear();
+            _defaultBinding = null;
+        }
+
+        protected override void OnRemoveComplete(int index, object value) {
+            if (value == _defaultBinding) {
+                FindDefaultBinding();
+            }
+        }
+
+        protected override void OnValidate(object value) {
+            base.OnValidate(value);
+            TreeNodeBinding binding = value as TreeNodeBinding;
+            if ((binding != null) && (binding.DataMember.Length == 0) && (binding.Depth == -1)) {
+                _defaultBinding = binding;
+            }
+        }
+
+        /// <devdoc>
+        /// Removes a TreeNodeBinding from the collection.
+        /// </devdoc>
+        public void Remove(TreeNodeBinding binding) {
+            ((IList)this).Remove(binding);
+        }
+
+        /// <devdoc>
+        /// Removes a TreeNodeBinding from the collection at a given index.
+        /// </devdoc>
+        public void RemoveAt(int index) {
+            ((IList)this).RemoveAt(index);
+        }
+
+        protected override void SetDirtyObject(object o) {
+            if (o is TreeNodeBinding) {
+                ((TreeNodeBinding)o).SetDirty();
+            }
+        }
+    }
+}
+