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//
// System.Web.UI.ExpressionBindingCollection.cs
//
// Authors:
// Sanjay Gupta gsanjay@novell.com)
//
// (C) 2004-2010 Novell, Inc. (http://www.novell.com)
//
//
// Permission is hereby granted, free of charge, to any person obtaining
// a copy of this software and associated documentation files (the
// "Software"), to deal in the Software without restriction, including
// without limitation the rights to use, copy, modify, merge, publish,
// distribute, sublicense, and/or sell copies of the Software, and to
// permit persons to whom the Software is furnished to do so, subject to
// the following conditions:
//
// The above copyright notice and this permission notice shall be
// included in all copies or substantial portions of the Software.
//
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
// EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
// MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
// NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
// LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
// OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
// WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
//
using System;
using System.ComponentModel;
using System.Collections;
namespace System.Web.UI {
public sealed class ExpressionBindingCollection : ICollection, IEnumerable
{
static readonly object changedEvent = new object ();
Hashtable list;
ArrayList removed;
EventHandlerList events = new EventHandlerList ();
public event EventHandler Changed {
add { events.AddHandler (changedEvent, value); }
remove { events.RemoveHandler (changedEvent, value); }
}
public ExpressionBindingCollection ()
{
list = new Hashtable ();
removed = new ArrayList ();
}
public int Count {
get { return list.Count; }
}
public bool IsReadOnly {
get { return list.IsReadOnly; }
}
public bool IsSynchronized {
get { return list.IsSynchronized; }
}
public ExpressionBinding this [string propertyName] {
get { return list [propertyName] as ExpressionBinding; }
}
public ICollection RemovedBindings {
get { return removed; }
}
public object SyncRoot {
get { return list.SyncRoot; }
}
public void Add (ExpressionBinding binding)
{
list.Add (binding.PropertyName, binding);
OnChanged (new EventArgs ());
}
public void Clear ()
{
list.Clear ();
removed.Clear ();
OnChanged (new EventArgs ());
}
public bool Contains (string propName)
{
return list.Contains (propName);
}
public void CopyTo (Array array, int index)
{
list.CopyTo (array, index);
}
public void CopyTo (ExpressionBinding [] array, int index)
{
if (index < 0)
throw new ArgumentNullException ("Index cannot be negative");
if (index >= array.Length)
throw new ArgumentException ("Index cannot be greater than or equal to length of array passed");
if (list.Count > (array.Length - index + 1))
throw new ArgumentException ("Number of elements in source is greater than available space from index to end of destination");
foreach (string key in list.Keys)
array [index++] = (ExpressionBinding) list [key];
}
public IEnumerator GetEnumerator ()
{
return list.GetEnumerator ();
}
public void Remove (ExpressionBinding binding)
{
Remove(binding.PropertyName, true);
}
public void Remove (string propertyName)
{
Remove (propertyName, true);
}
public void Remove (string propertyName, bool addToRemovedList)
{
if (addToRemovedList)
removed.Add (String.Empty);
else
removed.Add (propertyName);
list.Remove (propertyName);
OnChanged (new EventArgs ());
}
void OnChanged (EventArgs e)
{
EventHandler eh = events [changedEvent] as EventHandler;
if (eh != null)
eh (this, e);
}
}
}
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