MenuItemBindingCollection.cs source code in C# .NET

Source code for the .NET framework in C#

                        
Code:

                         / DotNET / DotNET / 8.0 / untmp / whidbey / REDBITS / ndp / fx / src / xsp / System / Web / UI / WebControls / MenuItemBindingCollection.cs / 1 / MenuItemBindingCollection.cs
                        

                        
                            //------------------------------------------------------------------------------ 
// 
//     Copyright (c) Microsoft Corporation.  All rights reserved.
// 
//----------------------------------------------------------------------------- 

namespace System.Web.UI.WebControls { 
    using System; 
    using System.Collections;
    using System.ComponentModel; 
    using System.Security.Permissions;
    using System.Web;

 
    /// 
    ///     Provides a collection of MenuItemBinding objects 
    ///  
    [AspNetHostingPermission(SecurityAction.LinkDemand, Level=AspNetHostingPermissionLevel.Minimal)]
    public sealed class MenuItemBindingCollection : StateManagedCollection { 
        private static readonly Type[] knownTypes = new Type[] { typeof(MenuItemBinding) };

        private Menu _owner;
        private MenuItemBinding _defaultBinding; 

        private MenuItemBindingCollection() { 
        } 

        internal MenuItemBindingCollection(Menu owner) { 
            _owner = owner;
        }

        ///  
        /// Gets the MenuItemBinding at the specified index
        ///  
        public MenuItemBinding this[int i] { 
            get {
                return (MenuItemBinding)((IList)this)[i]; 
            }
            set {
                ((IList)this)[i] = value;
            } 
        }
 
        ///  
        /// Adds a MenuItemBinding to the collection
        ///  
        public int Add(MenuItemBinding binding) {
            return ((IList)this).Add(binding);
        }
 
        public bool Contains(MenuItemBinding binding) {
            return ((IList)this).Contains(binding); 
        } 

        public void CopyTo(MenuItemBinding[] array, int index) { 
            ((IList)this).CopyTo(array, index);
        }

        protected override object CreateKnownType(int index) { 
            return new MenuItemBinding();
        } 
 
        private void FindDefaultBinding() {
            _defaultBinding = null; 
            // Look for another binding that would be a good default
            foreach (MenuItemBinding binding in this) {
                if (binding.Depth == -1 && binding.DataMember.Length == 0) {
                    _defaultBinding = binding; 
                    break;
                } 
            } 
        }
 
        /// 
        ///     Gets a MenuItemBinding data binding definition for the specified depth or datamember
        /// 
        internal MenuItemBinding GetBinding(string dataMember, int depth) { 
            MenuItemBinding bestMatch = null;
            int match = 0; 
            if ((dataMember != null) && (dataMember.Length == 0)) { 
                dataMember = null;
            } 

            foreach (MenuItemBinding 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(MenuItemBinding value) {
            return ((IList)this).IndexOf(value); 
        }
 
        public void Insert(int index, MenuItemBinding binding) { 
            ((IList)this).Insert(index, binding);
        } 

        protected override void OnClear() {
            _defaultBinding = null;
        } 

        protected override void OnRemoveComplete(int index, object value) { 
            if (value == _defaultBinding) { 
                FindDefaultBinding();
            } 
        }

        protected override void OnValidate(object value) {
            base.OnValidate(value); 
            MenuItemBinding binding = value as MenuItemBinding;
            if ((binding != null) && (binding.DataMember.Length == 0) && (binding.Depth == -1)) { 
                _defaultBinding = binding; 
            }
        } 

        /// 
        /// Removes a MenuItemBinding from the collection.
        ///  
        public void Remove(MenuItemBinding binding) {
            ((IList)this).Remove(binding); 
        } 

        ///  
        /// Removes a MenuItemBinding from the collection at a given index.
        /// 
        public void RemoveAt(int index) {
            ((IList)this).RemoveAt(index); 
        }
 
        protected override void SetDirtyObject(object o) { 
            if (o is MenuItemBinding) {
                ((MenuItemBinding)o).SetDirty(); 
            }
        }
    }
}

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