final ClassIndexManager manager = ClassIndexManager.getDefault();

        manager.addClassIndexManagerListener(WeakListeners.create(ClassIndexManagerListener.class, (ClassIndexManagerListener) this.spiListener, manager));

        this.sourceIndeces = new HashSet<ClassIndexImpl>();        

        this.oldSources = new HashSet<URL>();

        createQueriesForRoots (this.sourcePath, true, this.sourceIndeces, oldSources);

        this.depsIndeces = new HashSet<ClassIndexImpl>();

        this.oldDeps = new HashSet<URL>();

        createQueriesForRoots (this.bootPath, false, this.depsIndeces, oldDeps);                

        createQueriesForRoots (this.classPath, false, this.depsIndeces, oldDeps);	    

    }

    /**

     * Adds an {@link ClassIndexListener}. The listener is notified about the

     * changes of declared types in this {@link ClassIndex}

     * @param listener to be added

     */

    public void addClassIndexListener (final ClassIndexListener listener) {

        assert listener != null;

        listeners.add (listener);

    }

    /**

     * Removes an {@link ClassIndexListener}. The listener is notified about the

     * changes of declared types in this {@link ClassIndex}

     * @param listener to be removed

     */

    public void removeClassIndexListener (final ClassIndexListener listener) {

        assert listener != null;

        listeners.remove(listener);

/*

 * The contents of this file are subject to the terms of the Common Development

 * and Distribution License (the License). You may not use this file except in

 * compliance with the License.

 *

 * You can obtain a copy of the License at http://www.netbeans.org/cddl.html

 * or http://www.netbeans.org/cddl.txt.

 *

 * When distributing Covered Code, include this CDDL Header Notice in each file

 * and include the License file at http://www.netbeans.org/cddl.txt.

 * If applicable, add the following below the CDDL Header, with the fields

 * enclosed by brackets [] replaced by your own identifying information:

 * "Portions Copyrighted [year] [name of copyright owner]"

 *

 * The Original Software is NetBeans. The Initial Developer of the Original

 * Software is Sun Microsystems, Inc. Portions Copyright 1997-2007 Sun

 * Microsystems, Inc. All Rights Reserved.

 */

package org.netbeans.api.java.source;

import java.util.EventListener;

/**

 * Listener for changes in {@link ClassIndex}.

* <P>

* When attached to a {ClassIndex} it listens for addition,

* removal and modification of declared types.

* <P>

*

* @see ClassIndex#addClassIndexListener

 * @author Tomas Zezula

 */

public interface ClassIndexListener extends EventListener {

    /**

     * Called when the new declared types are added

     * into the {@link ClassIndex}

     * @param event specifying the added types

     */

    public void typesAdded (TypesEvent event);

    /**

     * Called when declared types are removed

     * from the {@link ClassIndex}

     * @param event specifying the removed types

     */

    public void typesRemoved (TypesEvent event);

    /**

     * Called when some declared types are changed.

     * @param event specifying the changed types

     */

    public void typesChanged (TypesEvent event);

    /**

     * Called when new roots are added

     * into the {@link ClassPath} for which the {@link ClassIndex}

     * was created.

     * @param event specifying the added roots

     */

    public void rootsAdded (RootsEvent event);

    /**

     * Called when root are removed

     * from the {@link ClassPath} for which the {@link ClassIndex}

     * was created.

     * @param event specifying the removed roots

     */

    public void rootsRemoved (RootsEvent event);

}

/*

 * The contents of this file are subject to the terms of the Common Development

 * and Distribution License (the License). You may not use this file except in

 * compliance with the License.

 *

 * You can obtain a copy of the License at http://www.netbeans.org/cddl.html

 * or http://www.netbeans.org/cddl.txt.

 *

 * When distributing Covered Code, include this CDDL Header Notice in each file

 * and include the License file at http://www.netbeans.org/cddl.txt.

 * If applicable, add the following below the CDDL Header, with the fields

 * enclosed by brackets [] replaced by your own identifying information:

 * "Portions Copyrighted [year] [name of copyright owner]"

 *

 * The Original Software is NetBeans. The Initial Developer of the Original

 * Software is Sun Microsystems, Inc. Portions Copyright 1997-2007 Sun

 * Microsystems, Inc. All Rights Reserved.

 */

package org.netbeans.api.java.source;

import java.net.URL;

import java.util.EventObject;

import org.netbeans.api.java.classpath.ClassPath;

/**

 * Event used to notify the {@link ClassIndexListener} about

 * a change in  the underlying {@link ClassPath}

 * @author Tomas Zezula

 */

public final class RootsEvent extends EventObject {

    private final Iterable <? extends URL> roots;

    RootsEvent(final Object source, final Iterable<? extends URL> roots) {

        super (source);

        assert roots != null;

        this.roots = roots;

    }

    /**

     * Returns the affected declared {@link ClassPath} roots.

     * @return an {@link Iterable} of {@link URL}

     */

    public Iterable<? extends URL> getRoots () {

        return this.roots;

    }

    @Override

    public String toString () {

        return String.format ("RootsEvent [%s]",this.roots.toString());

    }

}

/*

 * The contents of this file are subject to the terms of the Common Development

 * and Distribution License (the License). You may not use this file except in

 * compliance with the License.

 *

 * You can obtain a copy of the License at http://www.netbeans.org/cddl.html

 * or http://www.netbeans.org/cddl.txt.

 *

 * When distributing Covered Code, include this CDDL Header Notice in each file

 * and include the License file at http://www.netbeans.org/cddl.txt.

 * If applicable, add the following below the CDDL Header, with the fields

 * enclosed by brackets [] replaced by your own identifying information:

 * "Portions Copyrighted [year] [name of copyright owner]"

 *

 * The Original Software is NetBeans. The Initial Developer of the Original

 * Software is Sun Microsystems, Inc. Portions Copyright 1997-2007 Sun

 * Microsystems, Inc. All Rights Reserved.

 */

package org.netbeans.api.java.source;

import java.util.EventObject;

import javax.lang.model.element.TypeElement;

import org.netbeans.api.java.source.ElementHandle;

/**

 * Event used to notify the {@link ClassIndexListener} about

 * a change of declared types in the {@link ClassIndex}

 * @author Tomas Zezula

 */

public final class TypesEvent extends EventObject {

    private final Iterable<? extends ElementHandle<TypeElement>> types;

    TypesEvent (final Object source, final Iterable<? extends ElementHandle<TypeElement>> types) {

        super (source);

        assert types != null;

        this.types = types;

    }

    /**

     * Returns the affected declared types.

     * @return an {@link Iterable} of {@link TypeElement} handles

     */

    public Iterable<? extends ElementHandle<TypeElement>> getTypes () {

        return this.types;

    }

    @Override

    public String toString () {

        return String.format("TypesEvent [%s]", this.types.toString());

    }

}