diff --git a/src/fr/devinsy/xid/FilePresenters.java b/src/fr/devinsy/xid/FilePresenters.java
new file mode 100644
index 0000000..67f8724
--- /dev/null
+++ b/src/fr/devinsy/xid/FilePresenters.java
@@ -0,0 +1,184 @@
+/*
+ * Copyright 2009 Christian Momon, All rights reserved.
+ * This file is free software under the terms of the GNU Library General Public License
+ *  as published by the Free Software Foundation version 2 or any later version.
+ */
+
+package fr.devinsy.xid;
+
+
+import java.util.Vector;
+
+
+/**
+ *
+ */
+public class FilePresenters extends Vector<FilePresenter>
+{
+	private static final long serialVersionUID = 7058868685681354293L;
+	static protected org.apache.log4j.Logger logger = org.apache.log4j.Logger.getLogger (FilePresenters.class);
+
+
+	/**
+	 *
+	 */
+	public FilePresenters ()
+	{
+		super ();
+	}
+
+	
+	/**
+	 *
+	 */
+	public FilePresenters (FilePresenters source)
+	{
+		super ();
+		for (FilePresenter presenter : source)
+		{
+			this.add(presenter);
+		}
+	}
+
+	
+	/**
+	 * 
+	 */
+	public boolean exists (String source)
+	{
+		boolean result;
+		
+		
+		if (this.getBySource(source) == null)
+		{
+			result = false;
+		}
+		else
+		{
+			result = true;
+		}
+		
+		//
+		return(result);
+	}
+	
+
+	/**
+	 *
+	 */
+	public FilePresenter getByIndex (int id)
+	{
+		FilePresenter result;
+
+		result = this.get(id);
+		
+		//
+		return(result);
+	}
+
+	
+	/**
+	 *
+	 */
+	public FilePresenter getBySource (String source)
+	{
+		FilePresenter result;
+		
+		if (source == null)
+		{
+			result = null;
+		}
+		else
+		{
+			result = null;
+			boolean ended = false;
+			int presenterIndex = 0;
+			while (!ended)
+			{
+				if (presenterIndex < this.size())
+				{
+					FilePresenter presenter = this.get(presenterIndex);
+					
+					if (presenter.source().equals(source))
+					{
+						result = presenter;
+						ended = true;
+					}
+					else
+					{
+						presenterIndex += 1;
+					}
+				}
+				else
+				{
+					ended = true;
+					result = null;
+				}
+			}
+		}
+		
+		//
+		return(result);
+	}
+
+	
+	/**
+	 *
+	 */
+	public int getIndexOf (String source)
+	{
+		int result;
+		
+		if (source == null)
+		{
+			result = -1;
+		}
+		else
+		{
+			result = -1;
+			boolean ended = false;
+			int presenterIndex = 0;
+			while (!ended)
+			{
+				if (presenterIndex < this.size())
+				{
+					FilePresenter presenter = this.get(presenterIndex);
+					
+					if (presenter.source().equals(source))
+					{
+						result = presenterIndex;
+						ended = true;
+					}
+					else
+					{
+						presenterIndex += 1;
+					}
+				}
+				else
+				{
+					ended = true;
+					result = -1;
+				}
+			}
+		}
+		
+		//
+		return(result);
+	}
+
+
+	/**
+	 * 
+	 */
+	public String toString()
+	{
+		String result;
+		
+		result = "";
+		
+		//
+		return(result);
+	}
+}
+
+// ////////////////////////////////////////////////////////////////////////
\ No newline at end of file
diff --git a/src/fr/devinsy/xid/FilePresentersProxy.java b/src/fr/devinsy/xid/FilePresentersProxy.java
new file mode 100644
index 0000000..51fd1c8
--- /dev/null
+++ b/src/fr/devinsy/xid/FilePresentersProxy.java
@@ -0,0 +1,74 @@
+package fr.devinsy.xid;
+
+
+import java.io.File;
+import java.text.*;
+import java.util.*;
+
+
+/**
+ *
+ */
+public class FilePresentersProxy
+{
+	static private org.apache.log4j.Logger logger = org.apache.log4j.Logger.getLogger (FilePresentersProxy.class);
+
+
+	private static FilePresentersProxy instance = null;
+	protected FilePresenters presenters = null;
+
+	/**
+	 *
+	 */
+	protected FilePresentersProxy () throws Exception
+	{
+		this.presenters = new FilePresenters();
+	}
+
+	
+	/**
+	 *
+	 */
+	public static FilePresentersProxy instance () throws Exception
+	{
+		FilePresentersProxy result;
+
+		if (FilePresentersProxy.instance == null)
+		{
+			instance = new FilePresentersProxy ();
+		}
+
+		result = instance;
+
+		//
+		return (result);
+	}
+
+	
+	/**
+	 *
+	 */
+	public FilePresenter getBySource(String source) throws Exception
+	{
+		FilePresenter result;
+		
+		if (source == null)
+		{
+			result = null;
+		}
+		else
+		{
+			result = this.presenters.getBySource(source);
+			if (result == null)
+			{
+				result = new FilePresenter(source);
+				this.presenters.add(result);
+			}
+		}
+		
+		//
+		return (result);
+	}
+}
+
+// ////////////////////////////////////////////////////////////////////////
\ No newline at end of file