| gvSIG desktop 1

/* gvSIG. Sistema de Informaci?n Geogr?fica de la Generalitat Valenciana

 *

 * Copyright (C) 2005 IVER T.I. and Generalitat Valenciana.

 *

 * This program is free software; you can redistribute it and/or

 * modify it under the terms of the GNU General Public License

 * as published by the Free Software Foundation; either version 2

 * of the License, or (at your option) any later version.

 *

 * This program is distributed in the hope that it will be useful,

 * but WITHOUT ANY WARRANTY; without even the implied warranty of

 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the

 * GNU General Public License for more details.

 *

 * You should have received a copy of the GNU General Public License

 * along with this program; if not, write to the Free Software

 * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA  02111-1307,USA.

 *

 * For more information, contact:

 *

 *  Generalitat Valenciana

 *   Conselleria d'Infraestructures i Transport

 *   Av. Blasco Ib??ez, 50

 *   46010 VALENCIA

 *   SPAIN

 *

 *      +34 963862235

 *   gvsig@gva.es

 *      www.gvsig.gva.es

 *

 *    or

 *

 *   IVER T.I. S.A

 *   Salamanca 50

 *   46005 Valencia

 *   Spain

 *

 *   +34 963163400

 *   dac@iver.es

 */

/* CVS MESSAGES:

*

* $Id: JDnDListModel.java 3511 2005-12-22 16:46:00Z jaume $

* $Log$

* Revision 1.1.2.2  2005-12-22 16:46:00  jaume

* puede borrar m?ltiples intervalos de entradas dentro de la lista

*

* Revision 1.1.2.1  2005/12/19 18:12:35  jaume

* *** empty log message ***

*

*

*/

/**

 * 

 */

package com.iver.cit.gvsig.gui.beans;

import java.util.ArrayList;

import java.util.Collection;

import java.util.Iterator;

import javax.swing.AbstractListModel;

/**

 * 

 * @author jaume

 *

 */

public class JDnDListModel extends AbstractListModel {

    private ArrayList items = new ArrayList();

    /**

     * Inserts a collection of items before the specified index

     */

    public void insertItems( int index, Collection objects )

    {

        // Handle the case where the items are being added to the end of the list

        if( index == -1 )

        {

            // Add the items

            for( Iterator i = objects.iterator(); i.hasNext(); )

            {

                String item = ( String )i.next();

                addElement( item );

            }

        }

        else

        {

            // Insert the items

            for( Iterator i = objects.iterator(); i.hasNext(); )

            {

                Object item = i.next();

                insertElement( index++, item );

            }

        }

        // Tell the list to update itself

        this.fireContentsChanged( this, 0, this.items.size() - 1 );

    }

    /**

     * Inserts a new element into the list at the position mentioned in the index param.

     * @param index

     * @param item

     */

    public boolean insertElement(int index, Object element) {

        if (element == null) {

            return false;

        }

        for (int i = 0; i < items.size(); i++) {

            if (items.get(i).equals(items)) {

                return false;

            }

        }

        this.items.add(index, element);

        return true;

    }

    /**

     * Adds a new element at the end of the list.

     * @param item

     */

    public boolean addElement(Object element) {

        if (element == null) {

            return false;

        }

        for (int i = 0; i < items.size(); i++) {

            if (items.get(i).equals(items)) {

                return false;

            }

        }

        this.items.add(element);

        fireContentsChanged(this, items.size() - 1, items.size() - 1);

        return true;

    }

    /**

     * Removes every elements contained in the collection from this list.

     */

    public void delElements(Collection c) {

        items.removeAll(c);

        this.fireContentsChanged(this, 0, items.size());

    }

    /**

     * Removes the items of the list mentioned by the index array passed as argument.

     * @param indices

     */

    public void delIndices(int[] indices){

        int removed = 0;

        for (int i = 0; i < indices.length; i++) {

            items.remove(indices[i]-removed);

            removed++;

        }

    }

    public void itemsMoved( int newIndex, int[] indicies )

    {

        // Copy the objects to a temporary ArrayList

        ArrayList objects = new ArrayList();

        for( int i=0; i<indicies.length; i++ )

        {

            objects.add( this.items.get( indicies[ i ] ) );

        }

        // Delete the objects from the list

        for( int i=indicies.length-1; i>=0; i-- )

        {

            this.items.remove( indicies[ i ] );

        }

        // Insert the items at the new location

        insertItems( newIndex, objects );

    }

    /* (non-Javadoc)

     * @see javax.swing.ListModel#getSize()

     */

    public int getSize() {

        return items.size();

    }

    /* (non-Javadoc)

     * @see javax.swing.ListModel#getElementAt(int)

     */

    public Object getElementAt(int index) {

        return items.get(index);

    }

    /**

     * Removes any item currently contained by this list.

     *

     */

    public void clear(){

        items.clear();

        fireContentsChanged(this, 0, 0);

    }

    /**

     * Returns an ArrayList containing the elements of this list.

     */

    public ArrayList getElements() {

        return items;

    }

}