// 
// MoonlightParsedDocument.cs
// 
// Author:
//   Michael Hutchinson <mhutchinson@novell.com>
// 
// Copyright (C) 2008 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.Collections.Generic;
using MonoDevelop.Ide.TypeSystem;
using ICSharpCode.NRefactory.TypeSystem;
using MonoDevelop.Xml.Dom;

namespace MonoDevelop.Xml.Editor
{
	public class XmlParsedDocument : DefaultParsedDocument
	{
		public XmlParsedDocument (string fileName) : base (fileName)
		{
		}
		
		public XDocument XDocument { get; set; }
		
		public override IEnumerable<FoldingRegion> Foldings {
			get {
				if (XDocument == null)
					yield break;
				foreach (var region in Comments.ToFolds ()) 
					yield return region;
				foreach (XNode node in XDocument.AllDescendentNodes) {
					if (node is XCData)
					{
						if (node.Region.EndLine - node.Region.BeginLine > 2)
							yield return new FoldingRegion ("<![CDATA[ ]]>", node.Region);
					}
					else if (node is XComment)
					{
						if (node.Region.EndLine - node.Region.BeginLine > 2)
							yield return new FoldingRegion ("<!-- -->", node.Region);
					}
					else if (node is XElement)
					{
						XElement el = (XElement) node;
						if (el.IsClosed && el.ClosingTag.Region.EndLine - el.Region.BeginLine > 2) {
							yield return new FoldingRegion
								(string.Format ("<{0}...>", el.Name.FullName),
								 new DomRegion (el.Region.Begin, el.ClosingTag.Region.End));
						}
					}
					else if (node is XDocType)
					{
						XDocType dt = (XDocType) node;
						string id = !String.IsNullOrEmpty (dt.PublicFpi) ? dt.PublicFpi
							: !String.IsNullOrEmpty (dt.Uri) ? dt.Uri : null;
						
						if (id != null && dt.Region.EndLine - dt.Region.BeginLine > 2) {
							if (id.Length > 50)
								id = id.Substring (0, 47) + "...";
							
							FoldingRegion fr = new FoldingRegion (string.Format ("<!DOCTYPE {0}>", id), dt.Region);
							fr.IsFoldedByDefault = true;
							yield return fr;
						}
					}
				}
			}
		}
	}
}