Application: gvSIG desktop » Library: org.gvsig.tools

/* gvSIG. Geographic Information System of the Valencian Government

 *

 * Copyright (C) 2007-2008 Infrastructures and Transports Department

 * of the Valencian Government (CIT)

 * 

 * 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., 51 Franklin Street, Fifth Floor, Boston, 

 * MA  02110-1301, USA.

 * 

 */

/*

 * AUTHORS (In addition to CIT):

 * 2010 Institute of New Imaging Technologies (INIT): 

 *   http://www.init.uji.es

 * Geographic Information research group: 

 *   http://www.geoinfo.uji.es

 * Universitat Jaume I, Spain

 */

package org.gvsig.tools.swing.impl.dynobject.valuefield;

import java.util.ArrayList;

import java.util.List;

import org.gvsig.tools.dynobject.DynField;

import org.gvsig.tools.dynobject.DynObject;

import org.gvsig.tools.swing.api.dynobject.dynfield.ValueField;

/**

 * 

 * Implementation that emulates the ValueField behavior for List objects.

 * 

 * @author 2010 - <a href="cordinyana@gvsig.org">C?sar Ordi?ana</a> - gvSIG Team

 * @author 2010 - <a href="mailto:reinhold@uji.es">Cristian Mart?n&nbsp;</a>  - gvSIG Team

 * @version $Id$

 *

 */

public class ListItemValueField implements ValueField {

    private List<Object> items;

    private DynField dynField;

    private DynObject dynObject;

    private String fieldName;

    private int index;

    /**

     * 

     * Constructor.

     * 

     * @param dynObject

     *      the current DynObject value.

     * @param fieldName

     *      the current field name.

     * @param index

     *      the current index value to be pointing at the list.

     */

    public ListItemValueField(DynObject dynObject, String fieldName, int index) {

        this.dynObject = dynObject;

        this.fieldName = fieldName;

        this.index = index;

        this.dynField = dynObject.getDynClass().getDynField(fieldName);

        Object value = dynObject.getDynValue(fieldName);

        if (value == null) {

            value = getDefaultValue();

        }

        this.setValue(value);

    }

    /**

     * Returns the List of values.

     * 

     * @return  the List of values.

     */

    public Object getValue() {

        return this.items;

    }

    /**

     * Reutrns the item of the list at a given position.

     * 

     * @param index

     *     the index position

     * @return

     *     the resulting item.

     */

    public Object getValueItem(int index) {

        return this.items.get(index);

    }

    /*

     * (non-Javadoc)

     * 

     * @see

     * org.gvsig.tools.swing.api.dynobject.dynfield.ValueField#setValue(java

     * .lang.Object)

     */

    public void setValue(Object value) {

        if (value==null)

            this.items = new ArrayList<Object>();

        else

            this.items = (List<Object>) value;

    }

    /**

     * Sets an item into the list at the index specified.

     * 

     * @param item

     *      the item to be inserted.

     * @param index

     *      the index to insert the item.

     */

    public void setValueItem(Object item, int index) {

        this.items.set(index, item);

    }

    public DynField getDynField() {

        return dynField.getElementsType();

    }

    public Object getDefaultFieldValue() {

        return getDynField().getDefaultValue();

    }

    /*

     * (non-Javadoc)

     * 

     * @see

     * org.gvsig.tools.swing.api.dynobject.dynfield.ValueField#getDefaultValue()

     */

    public Object getDefaultValue() {

        return this.dynField.getDefaultValue();

    }

    public Object getFieldValue() {

        return this.items;

    }

    public void setFieldValue(Object value) {

        this.dynObject.setDynValue(this.fieldName, value);

    }

}