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// NotifyHashtable.cs
// John Sohn (jsohn@columbus.rr.com)
//
// Copyright (c) 2002 John Sohn
//
// This file is part of Monodoc, a multilingual API documentation tool.
//
// Monodoc is free software; you can redistribute it and/or modify
// it under the terms of the GNU General Public License as published by
// the Free Software Foundation; either version 2 of the License, or
// (at your option) any later version.
//
// Monodoc is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
// GNU General Public License for more details.
//
// You should have received a copy of the GNU General Public License
// along with Monodoc; if not, write to the Free Software
// Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
using System;
using System.Collections;
using System.Runtime.Serialization;
namespace Mono.Doc.Core
{
/// <summary>
/// An implementation of the Hashtable class that provides
/// a mechanism to receive a notification event
/// when the elements of the Hashtable are changed
// </summary>
public class NotifyHashtable : Hashtable, INotifyCollection
{
#region Protected Instance Fields
protected NotifyCollectionHandler handler = null;
#endregion
#region Constructors and Destructor
public NotifyHashtable() : base()
{
handler = new NotifyCollectionHandler(this);
}
public NotifyHashtable(IDictionary d) : base(d)
{
handler = new NotifyCollectionHandler(this);
}
public NotifyHashtable(int i) : base(i)
{
handler = new NotifyCollectionHandler(this);
}
public NotifyHashtable(IDictionary d, float f) : base(d, f)
{
handler = new NotifyCollectionHandler(this);
}
public NotifyHashtable(IHashCodeProvider hp, IComparer c)
: base(hp, c)
{
handler = new NotifyCollectionHandler(this);
}
public NotifyHashtable(int i, float f) : base(i, f)
{
handler = new NotifyCollectionHandler(this);
}
protected NotifyHashtable(SerializationInfo si,
StreamingContext sc) : base(si, sc)
{
handler = new NotifyCollectionHandler(this);
}
public NotifyHashtable(IDictionary d, IHashCodeProvider hcp,
IComparer c) : base(d, hcp, c)
{
handler = new NotifyCollectionHandler(this);
}
public NotifyHashtable(int i, IHashCodeProvider hcp,
IComparer c) : base(i, hcp, c)
{
handler = new NotifyCollectionHandler(this);
}
public NotifyHashtable(IDictionary d, float f,
IHashCodeProvider hcp, IComparer c)
: base(d, f, hcp, c)
{
handler = new NotifyCollectionHandler(this);
}
public NotifyHashtable(int i, float f, IHashCodeProvider hcp,
IComparer c) : base(i, f, hcp, c)
{
handler = new NotifyCollectionHandler(this);
}
#endregion
#region Public Instance Fields
/// <summary>
/// The event handler that will be called whenever
/// a change is made to the Hashtable.
/// </summary>
public event CollectionModifiedEventHandler Modified;
#endregion // Public Instance Fields
#region Public Instance Methods
/// <summary>
/// Turns off notification event calling. Notification
/// events will not be sent until EndUpdate() is called.
/// </summary>
public virtual void BeginUpdate()
{
handler.BeginUpdate();
}
/// <summary>
/// Resumes notification event calling previously
/// turned off by calling BeginUpdate().
/// </summary>
public virtual void EndUpdate()
{
handler.EndUpdate();
}
public virtual void SetModifiedEvent()
{
if (Modified != null)
{
Modified(this);
}
}
public override object this[object key]
{
set
{
base[key] = value;
handler.OnModified();
}
}
public override void Add(object key,object value)
{
base.Add(key, value);
handler.OnModified();
}
public override void Clear()
{
base.Clear();
handler.OnModified();
}
public override void Remove(object key)
{
base.Remove(key);
handler.OnModified();
}
#endregion // Public Instance Methods
}
}
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