using System;
using System.Xml;

using SharpVectors.Dom.Events;

namespace SharpVectors.Dom
{
	/// <summary>
	/// Summary description for Whitespace.
	/// </summary>
	public class Whitespace
		: XmlWhitespace
		, INode
		, IEventTargetSupport
	{
		#region Private Fields
		
		private EventTarget eventTarget;
		
		#endregion
		
		#region Constructors
		
		protected internal Whitespace(
			string data,
			Document document)
			: base(data, document)
		{
			eventTarget = new EventTarget(this);
		}
		
		#endregion
		
		#region IEventTarget interface
		
		#region Methods
		
		#region DOM Level 2
		
		void IEventTarget.AddEventListener(
			string type,
			EventListener listener,
			bool useCapture)
		{
			eventTarget.AddEventListener(type, listener, useCapture);
		}
		
		void IEventTarget.RemoveEventListener(
			string type,
			EventListener listener,
			bool useCapture)
		{
			eventTarget.RemoveEventListener(type, listener, useCapture);
		}
		
		bool IEventTarget.DispatchEvent(
			IEvent @event)
		{
			return eventTarget.DispatchEvent(@event);
		}
		
		#endregion
		
		#region DOM Level 3 Experimental
		
		void IEventTarget.AddEventListenerNs(
			string namespaceUri,
			string type,
			EventListener listener,
			bool useCapture,
			object eventGroup)
		{
			eventTarget.AddEventListenerNs(namespaceUri, type, listener, useCapture, eventGroup);
		}
		
		void IEventTarget.RemoveEventListenerNs(
			string namespaceUri,
			string type,
			EventListener listener,
			bool useCapture)
		{
			eventTarget.RemoveEventListenerNs(namespaceUri, type, listener, useCapture);
		}
		
		bool IEventTarget.WillTriggerNs(
			string namespaceUri,
			string type)
		{
			return eventTarget.WillTriggerNs(namespaceUri, type);
		}
		
		bool IEventTarget.HasEventListenerNs(
			string namespaceUri,
			string type)
		{
			return eventTarget.HasEventListenerNs(namespaceUri, type);
		}
		
		#endregion
		
		#endregion
		
		#endregion
		
		#region XmlNode interface
		
		public override string Value
		{
			get
			{
				return base.Value;
			}
			set
			{
				base.Value = value;
				
				// Mutation events: Notify document.
				Document document = this.OwnerDocument as Document;
				
				if (document != null)
				{
					document.ReplacedText(this);
				}
			}
		}
		
		#endregion
		
		#region NON-DOM
		
		void IEventTargetSupport.FireEvent(
			IEvent @event)
		{
			eventTarget.FireEvent(@event);
		}
		
		#endregion
	}
}