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<?xml version='1.0' encoding='utf-8'?>
<SettingsFile xmlns="uri:settings" CurrentProfile="(Default)">
  <Profiles>
    <Profile Name="(Default)" />
  </Profiles>
  <Settings />
</SettingsFile>
highlight .mb { color: #0000DD; font-weight: bold } /* Literal.Number.Bin */ .highlight .mf { color: #0000DD; font-weight: bold } /* Literal.Number.Float */ .highlight .mh { color: #0000DD; font-weight: bold } /* Literal.Number.Hex */ .highlight .mi { color: #0000DD; font-weight: bold } /* Literal.Number.Integer */ .highlight .mo { color: #0000DD; font-weight: bold } /* Literal.Number.Oct */ .highlight .sa { color: #dd2200; background-color: #fff0f0 } /* Literal.String.Affix */ .highlight .sb { color: #dd2200; background-color: #fff0f0 } /* Literal.String.Backtick */ .highlight .sc { color: #dd2200; background-color: #fff0f0 } /* Literal.String.Char */ .highlight .dl { color: #dd2200; background-color: #fff0f0 } /* Literal.String.Delimiter */ .highlight .sd { color: #dd2200; background-color: #fff0f0 } /* Literal.String.Doc */ .highlight .s2 { color: #dd2200; background-color: #fff0f0 } /* Literal.String.Double */ .highlight .se { color: #0044dd; background-color: #fff0f0 } /* Literal.String.Escape */ .highlight .sh { color: #dd2200; background-color: #fff0f0 } /* Literal.String.Heredoc */ .highlight .si { color: #3333bb; background-color: #fff0f0 } /* Literal.String.Interpol */ .highlight .sx { color: #22bb22; background-color: #f0fff0 } /* Literal.String.Other */ .highlight .sr { color: #008800; background-color: #fff0ff } /* Literal.String.Regex */ .highlight .s1 { color: #dd2200; background-color: #fff0f0 } /* Literal.String.Single */ .highlight .ss { color: #aa6600; background-color: #fff0f0 } /* Literal.String.Symbol */ .highlight .bp { color: #003388 } /* Name.Builtin.Pseudo */ .highlight .fm { color: #0066bb; font-weight: bold } /* Name.Function.Magic */ .highlight .vc { color: #336699 } /* Name.Variable.Class */ .highlight .vg { color: #dd7700 } /* Name.Variable.Global */ .highlight .vi { color: #3333bb } /* Name.Variable.Instance */ .highlight .vm { color: #336699 } /* Name.Variable.Magic */ .highlight .il { color: #0000DD; font-weight: bold } /* Literal.Number.Integer.Long */
// Copyright (c) AlphaSierraPapa for the SharpDevelop Team (for details please see \doc\copyright.txt)
// This code is distributed under the GNU LGPL (for details please see \doc\license.txt)

using System;

namespace Tango.Scripting.Editors.Document
{
	/// <summary>
	/// Allows registering a line tracker on a TextDocument using a weak reference from the document to the line tracker.
	/// </summary>
	public sealed class WeakLineTracker : ILineTracker
	{
		TextDocument textDocument;
		WeakReference targetObject;
		
		private WeakLineTracker(TextDocument textDocument, ILineTracker targetTracker)
		{
			this.textDocument = textDocument;
			this.targetObject = new WeakReference(targetTracker);
		}
		
		/// <summary>
		/// Registers the <paramref name="targetTracker"/> as line tracker for the <paramref name="textDocument"/>.
		/// A weak reference to the target tracker will be used, and the WeakLineTracker will deregister itself
		/// when the target tracker is garbage collected.
		/// </summary>
		public static WeakLineTracker Register(TextDocument textDocument, ILineTracker targetTracker)
		{
			if (textDocument == null)
				throw new ArgumentNullException("textDocument");
			if (targetTracker == null)
				throw new ArgumentNullException("targetTracker");
			WeakLineTracker wlt = new WeakLineTracker(textDocument, targetTracker);
			textDocument.LineTrackers.Add(wlt);
			return wlt;
		}
		
		/// <summary>
		/// Deregisters the weak line tracker.
		/// </summary>
		public void Deregister()
		{
			if (textDocument != null) {
				textDocument.LineTrackers.Remove(this);
				textDocument = null;
			}
		}
		
		void ILineTracker.BeforeRemoveLine(DocumentLine line)
		{
			ILineTracker targetTracker = targetObject.Target as ILineTracker;
			if (targetTracker != null)
				targetTracker.BeforeRemoveLine(line);
			else
				Deregister();
		}
		
		void ILineTracker.SetLineLength(DocumentLine line, int newTotalLength)
		{
			ILineTracker targetTracker = targetObject.Target as ILineTracker;
			if (targetTracker != null)
				targetTracker.SetLineLength(line, newTotalLength);
			else
				Deregister();
		}
		
		void ILineTracker.LineInserted(DocumentLine insertionPos, DocumentLine newLine)
		{
			ILineTracker targetTracker = targetObject.Target as ILineTracker;
			if (targetTracker != null)
				targetTracker.LineInserted(insertionPos, newLine);
			else
				Deregister();
		}
		
		void ILineTracker.RebuildDocument()
		{
			ILineTracker targetTracker = targetObject.Target as ILineTracker;
			if (targetTracker != null)
				targetTracker.RebuildDocument();
			else
				Deregister();
		}
	}
}