diff --git a/src/main/java/org/gcube/portlets/user/td/openwidget/client/source/FileSource.java b/src/main/java/org/gcube/portlets/user/td/openwidget/client/source/FileSource.java
deleted file mode 100644
index e18d55f..0000000
--- a/src/main/java/org/gcube/portlets/user/td/openwidget/client/source/FileSource.java
+++ /dev/null
@@ -1,54 +0,0 @@
-package org.gcube.portlets.user.td.openwidget.client.source;
-
-
-public class FileSource implements Source {
-	
-	
-	private static final long serialVersionUID = -5990408094142286488L;
-	
-	public static final FileSource INSTANCE = new FileSource();
-	
-	
-	/**
-	 * {@inheritDoc}
-	 */
-	@Override
-	public String getId() {
-		return "File";
-	}
-
-	/**
-	 * {@inheritDoc}
-	 */
-	@Override
-	public String getName() {
-		return "File source";
-	}
-
-	/**
-	 * {@inheritDoc}
-	 */
-	@Override
-	public String getDescription() {
-		return "Select this source if you want to retrive document from File";
-	}
-
-	/**
-	 * {@inheritDoc}
-	 */
-	@Override
-	public String toString() {
-		StringBuilder builder = new StringBuilder();
-		builder.append("File source [getId()=");
-		builder.append(getId());
-		builder.append(", getName()=");
-		builder.append(getName());
-		builder.append(", getDescription()=");
-		builder.append(getDescription());
-		builder.append("]");
-		return builder.toString();
-	}
-	
-	
-	
-}
\ No newline at end of file
diff --git a/src/main/java/org/gcube/portlets/user/td/openwidget/client/source/Source.java b/src/main/java/org/gcube/portlets/user/td/openwidget/client/source/Source.java
deleted file mode 100644
index 7a6408a..0000000
--- a/src/main/java/org/gcube/portlets/user/td/openwidget/client/source/Source.java
+++ /dev/null
@@ -1,27 +0,0 @@
-package org.gcube.portlets.user.td.openwidget.client.source;
-
-import java.io.Serializable;
-
-
-public interface Source extends Serializable {
-	
-	/**
-	 * Returns the document type id.
-	 * @return the document type id.
-	 */
-	public String getId();
-	
-	/**
-	 * Returns the document type name.
-	 * @return the document type name.
-	 */
-	public String getName();
-	
-	/**
-	 * Returns the document type description.
-	 * @return the document type description.
-	 */
-	public String getDescription();
-	
-	
-}
diff --git a/src/main/java/org/gcube/portlets/user/td/openwidget/client/source/TDOpenSource.java b/src/main/java/org/gcube/portlets/user/td/openwidget/client/source/TDOpenSource.java
deleted file mode 100644
index d64d43e..0000000
--- a/src/main/java/org/gcube/portlets/user/td/openwidget/client/source/TDOpenSource.java
+++ /dev/null
@@ -1,68 +0,0 @@
-package org.gcube.portlets.user.td.openwidget.client.source;
-
-
-
-
-public class TDOpenSource implements Source {
-	
-	
-	private static final long serialVersionUID = 3254879141340681969L;
-
-	public static final TDOpenSource INSTANCE = new TDOpenSource();
-	
-	protected String url;
-	
-
-	/**
-	 * {@inheritDoc}
-	 */
-	@Override
-	public String getId() {
-		return "SDMXRegistry";
-	}
-
-	/**
-	 * {@inheritDoc}
-	 */
-	@Override
-	public String getName() {
-		return "SDMX Registry source";
-	}
-
-	/**
-	 * {@inheritDoc}
-	 */
-	@Override
-	public String getDescription() {
-		return "Select this source if you want to retrive document from SDMX Registry";
-	}
-
-	public String getUrl() {
-		return url;
-	}
-
-	public void setUrl(String url) {
-		this.url = url;
-	}
-	
-	/**
-	 * {@inheritDoc}
-	 */
-	@Override
-	public String toString() {
-		StringBuilder builder = new StringBuilder();
-		builder.append("SDMXRegistry source [getId()=");
-		builder.append(getId());
-		builder.append(", getName()=");
-		builder.append(getName());
-		builder.append(", getDescription()=");
-		builder.append(getDescription());
-		builder.append(", getUrl()=");
-		builder.append(getUrl());
-		builder.append("]");
-		return builder.toString();
-	}
-	
-	
-	
-}
\ No newline at end of file
diff --git a/src/main/java/org/gcube/portlets/user/td/openwidget/client/source/WorkspaceSource.java b/src/main/java/org/gcube/portlets/user/td/openwidget/client/source/WorkspaceSource.java
deleted file mode 100644
index 0e85897..0000000
--- a/src/main/java/org/gcube/portlets/user/td/openwidget/client/source/WorkspaceSource.java
+++ /dev/null
@@ -1,54 +0,0 @@
-package org.gcube.portlets.user.td.openwidget.client.source;
-
-
-public class WorkspaceSource implements Source {
-	
-	
-	private static final long serialVersionUID = 2826706131664617270L;
-	
-	public static final WorkspaceSource INSTANCE = new WorkspaceSource();
-	
-	
-	/**
-	 * {@inheritDoc}
-	 */
-	@Override
-	public String getId() {
-		return "Workspace";
-	}
-
-	/**
-	 * {@inheritDoc}
-	 */
-	@Override
-	public String getName() {
-		return "Workspace source";
-	}
-
-	/**
-	 * {@inheritDoc}
-	 */
-	@Override
-	public String getDescription() {
-		return "Select this source if you want to retrive document from Workspace";
-	}
-
-	/**
-	 * {@inheritDoc}
-	 */
-	@Override
-	public String toString() {
-		StringBuilder builder = new StringBuilder();
-		builder.append("Workspace source [getId()=");
-		builder.append(getId());
-		builder.append(", getName()=");
-		builder.append(getName());
-		builder.append(", getDescription()=");
-		builder.append(getDescription());
-		builder.append("]");
-		return builder.toString();
-	}
-	
-	
-	
-}
\ No newline at end of file