ActivitiesCollection.cs source code in C# .NET

Source code for the .NET framework in C#

                        
Code:

                         / 4.0 / 4.0 / untmp / DEVDIV_TFS / Dev10 / Releases / RTMRel / ndp / cdf / src / WF / Common / AuthoringOM / ActivitiesCollection.cs / 1305376 / ActivitiesCollection.cs
                        

                        
                            namespace System.Workflow.ComponentModel 
{
    using System;
    using System.Collections;
    using System.Collections.Generic; 
    using System.ComponentModel.Design.Serialization;
    using System.Workflow.ComponentModel.Serialization; 
 
    #region Class ActivityCollectionItemList
    [DesignerSerializer(typeof(ActivityCollectionMarkupSerializer), typeof(WorkflowMarkupSerializer))] 
    public sealed class ActivityCollection : List, IList, IList
    {
 		private Activity owner = null;
 
		internal event EventHandler ListChanging;
		public event EventHandler ListChanged; 
 
        public ActivityCollection(Activity owner)
		{ 
 			if (owner == null)
                throw new ArgumentNullException("owner");
			if (!(owner is Activity))
 				throw new ArgumentException(SR.GetString(SR.Error_UnexpectedArgumentType, typeof(Activity).FullName), "owner"); 

 			this.owner = owner; 
		} 

        private void FireListChanging(ActivityCollectionChangeEventArgs eventArgs) 
        {
 			if (this.ListChanging != null)
                this.ListChanging(this, eventArgs);
        } 

        private void FireListChanged(ActivityCollectionChangeEventArgs eventArgs) 
        { 
			if (this.ListChanged != null)
                this.ListChanged(this, eventArgs); 
		}

        internal Activity Owner
		{ 
 			get
			{ 
 				return this.owner; 
 			}
		} 

 		internal void InnerAdd(Activity activity)
		{
			base.Add(activity); 
		}
 
 		#region IList Members 

		void IList.RemoveAt(int index) 
 		{
 			if (index < 0 || index >= base.Count)
				throw new ArgumentOutOfRangeException("Index");
 
 			Activity item = base[index];
 
            ActivityCollectionChangeEventArgs args = new ActivityCollectionChangeEventArgs(index, item, null, this.owner, ActivityCollectionChangeAction.Remove); 
            FireListChanging(args);
			base.RemoveAt(index); 
            FireListChanged(args);
		}

		void IList.Insert(int index, Activity item) 
 		{
			if (index < 0 || index > base.Count) 
                throw new ArgumentOutOfRangeException("index"); 
 			if (item == null)
 				throw new ArgumentNullException("item"); 

            ActivityCollectionChangeEventArgs args = new ActivityCollectionChangeEventArgs(index, null, item, this.owner, ActivityCollectionChangeAction.Add);
            FireListChanging(args);
			base.Insert(index, item); 
            FireListChanged(args);
 		} 
 
		Activity IList.this[int index]
		{ 
			get
 			{
				return base[index];
 			} 
 			set
			{ 
 				if (value == null) 
					throw new ArgumentNullException("item");
 
				Activity oldItem = base[index];
                ActivityCollectionChangeEventArgs args = new ActivityCollectionChangeEventArgs(index, oldItem, value, this.owner, ActivityCollectionChangeAction.Replace);
                FireListChanging(args);
				base[index] = value; 
                FireListChanged(args);
 			} 
		} 
 		int IList.IndexOf(Activity item)
 		{ 
			return base.IndexOf(item);
 		}

		#endregion 

		#region ICollection Members 
		bool ICollection.IsReadOnly 
 		{
			get 
 			{
 				return false;
			}
 		} 

		bool ICollection.Contains(Activity item) 
		{ 
			return base.Contains(item);
 		} 

		bool ICollection.Remove(Activity item)
 		{
 			if (!base.Contains(item)) 
				return false;
 
 			int index = base.IndexOf(item); 
			if (index >= 0)
			{ 
                ActivityCollectionChangeEventArgs args = new ActivityCollectionChangeEventArgs(index, item, null, this.owner, ActivityCollectionChangeAction.Remove);
                FireListChanging(args);
				base.Remove(item);
                FireListChanged(args); 
 				return true;
			} 
 			return false; 
 		}
 
		void ICollection.Clear()
 		{
			ICollection children = base.GetRange(0, base.Count);
            ActivityCollectionChangeEventArgs args = new ActivityCollectionChangeEventArgs(-1, children, null, this.owner, ActivityCollectionChangeAction.Remove); 
            FireListChanging(args);
			base.Clear(); 
            FireListChanged(args); 
		}
 
 		void ICollection.Add(Activity item)
		{
 			if (item == null)
 				throw new ArgumentNullException("item"); 

            ActivityCollectionChangeEventArgs args = new ActivityCollectionChangeEventArgs(base.Count, null, item, this.owner, ActivityCollectionChangeAction.Add); 
            FireListChanging(args); 
			base.Add(item);
            FireListChanged(args); 
 		}

		int ICollection.Count
		{ 
			get
 			{ 
				return base.Count; 
 			}
 		} 
		void ICollection.CopyTo(Activity[] array, int arrayIndex)
 		{
			base.CopyTo(array, arrayIndex);
		} 

		#endregion 
 
 		#region IEnumerable Members
 
		IEnumerator IEnumerable.GetEnumerator()
 		{
 			return base.GetEnumerator();
		} 

 		#endregion 
 
		#region Member Implementations
		public new int Count 
		{
 			get
			{
 				return ((ICollection)this).Count; 
 			}
		} 
 
 		public new void Add(Activity item)
		{ 
			((IList)this).Add(item);
		}

 		public new void Clear() 
		{
 			((IList)this).Clear(); 
 		} 

		public new void Insert(int index, Activity item) 
 		{
			((IList)this).Insert(index, item);
		}
 
		public new bool Remove(Activity item)
 		{ 
			return ((IList)this).Remove(item); 
 		}
 
 		public new void RemoveAt(int index)
		{
 			((IList)this).RemoveAt(index);
		} 

		public new Activity this[int index] 
		{ 
 			get
			{ 
 				return ((IList)this)[index];
 			}
			set
 			{ 
				((IList)this)[index] = value;
			} 
		} 

        public Activity this[string key] 
        {
            get
            {
                for (int index = 0; index < this.Count; index++) 
                    if ((this[index].Name.Equals(key) || this[index].QualifiedName.Equals(key)))
                        return this[index]; 
                return null; 
            }
        } 

        public new int IndexOf(Activity item)
 		{
			return ((IList)this).IndexOf(item); 
 		}
 
 		public new bool Contains(Activity item) 
		{
 			return ((IList)this).Contains(item); 
		}

		public new IEnumerator GetEnumerator()
		{ 
 			return ((IList)this).GetEnumerator();
		} 
 		#endregion 

 		#region IList Members 

		int IList.Add(object value)
 		{
			if (!(value is Activity)) 
				throw new Exception(SR.GetString(SR.Error_InvalidListItem, this.GetType().GetGenericArguments()[0].FullName));
			((IList)this).Add((Activity)value); 
 			return this.Count - 1; 
		}
 
 		void IList.Clear()
 		{
			((IList)this).Clear();
 		} 

		bool IList.Contains(object value) 
		{ 
			if (!(value is Activity))
 				throw new Exception(SR.GetString(SR.Error_InvalidListItem, this.GetType().GetGenericArguments()[0].FullName)); 
			return (((IList)this).Contains((Activity)value));
 		}

 		int IList.IndexOf(object value) 
		{
 			if (!(value is Activity)) 
				throw new Exception(SR.GetString(SR.Error_InvalidListItem, this.GetType().GetGenericArguments()[0].FullName)); 
			return ((IList)this).IndexOf((Activity)value);
		} 

 		void IList.Insert(int index, object value)
		{
 			if (!(value is Activity)) 
 				throw new Exception(SR.GetString(SR.Error_InvalidListItem, this.GetType().GetGenericArguments()[0].FullName));
			((IList)this).Insert(index, (Activity)value); 
 		} 

		bool IList.IsFixedSize 
		{
			get
 			{
				return false; 
 			}
 		} 
 
		bool IList.IsReadOnly
 		{ 
			get
			{
				return ((IList)this).IsReadOnly;
 			} 
		}
 
 		void IList.Remove(object value) 
 		{
			if (!(value is Activity)) 
 				throw new Exception(SR.GetString(SR.Error_InvalidListItem, this.GetType().GetGenericArguments()[0].FullName));
			((IList)this).Remove((Activity)value);
		}
		object IList.this[int index] 
 		{
			get 
 			{ 
 				return ((IList)this)[index];
			} 

 			set
			{
				if (!(value is Activity)) 
					throw new Exception(SR.GetString(SR.Error_InvalidListItem, this.GetType().GetGenericArguments()[0].FullName));
 				((IList)this)[index] = (Activity)value; 
			} 
 		}
 
 		#endregion

		#region ICollection Members
 
 		void ICollection.CopyTo(Array array, int index)
		{ 
			for (int loop = 0; loop < this.Count; loop++) 
				array.SetValue(this[loop], loop + index);
 		} 
		bool ICollection.IsSynchronized
 		{
 			get { return false; }
		} 

 		object ICollection.SyncRoot 
		{ 
			get { return this; }
		} 

 		#endregion

		#region IEnumerable Members 

 		IEnumerator IEnumerable.GetEnumerator() 
 		{ 
			return (IEnumerator)((IList)this).GetEnumerator();
 		} 

		#endregion

	} 
    #endregion
 
	public enum ActivityCollectionChangeAction 
 	{
		Add = 0x00, 
 		Remove = 0x01,
 		Replace = 0x02
	}
 
 	public sealed class ActivityCollectionChangeEventArgs: EventArgs
	{ 
		private int index = 0; 
		private ICollection addedItems = null;
 		private ICollection removedItems = null; 
		private object owner = null;
 		private ActivityCollectionChangeAction action = ActivityCollectionChangeAction.Add;

 		public ActivityCollectionChangeEventArgs(int index, ICollection removedItems, ICollection addedItems, object owner, ActivityCollectionChangeAction action) 
		{
 			this.index = index; 
			this.removedItems = removedItems; 
			this.addedItems = addedItems;
			this.action = action; 
 			this.owner = owner;
		}

 		public ActivityCollectionChangeEventArgs(int index, Activity removedActivity, Activity addedActivity, object owner, ActivityCollectionChangeAction action) 
 		{
			this.index = index; 
 			if (removedActivity != null) 
			{
				this.removedItems = new List(); 
				((List)this.removedItems).Add(removedActivity);
 			}
			if (addedActivity != null)
 			{ 
 				this.addedItems = new List();
				((List)this.addedItems).Add(addedActivity); 
 			} 
			this.action = action;
			this.owner = owner; 
		}

 		public IList RemovedItems
		{ 
 			get
 			{ 
				return (this.removedItems != null) ? new List(this.removedItems).AsReadOnly() : new List().AsReadOnly(); 
 			}
		} 

		public IList AddedItems
		{
 			get 
			{
 				return (this.addedItems != null) ? new List(this.addedItems).AsReadOnly() : new List().AsReadOnly(); 
 			} 
		}
 
 		public object Owner
		{
			get
			{ 
 				return this.owner;
			} 
 		} 

 		public int Index 
		{
 			get
			{
				return this.index; 
			}
 		} 
 
		public ActivityCollectionChangeAction Action
 		{ 
 			get
			{
 				return this.action;
			} 
		}
	} 
} 

// File provided for Reference Use Only by Microsoft Corporation (c) 2007.
// Copyright (c) Microsoft Corporation. All rights reserved.

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