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.serv.field.component.spinner;

import java.util.Date;

import javax.swing.JSpinner;

import javax.swing.SpinnerModel;

import javax.swing.event.ChangeEvent;

/**

 * @author <a href="mailto:reinhold@uji.es">cmartin</a>

 *

 */

public class NullNumberEditor extends JSpinner.NumberEditor {

    /**

     * @param arg0

     */

    public NullNumberEditor(JSpinner spinner) {

	super(spinner);

    }

    /**

     * @param arg0

     * @param arg1

     */

    public NullNumberEditor(JSpinner spinner, String dateFormatPattern) {

	super(spinner, dateFormatPattern);

    }

    public void stateChanged(ChangeEvent e) {

//	super.stateChanged(e);

	Object value = getSpinner().getValue();

	String text = "";

//	String text = "(Add a value)";

	if (value != null) {

//	    text = getFormat().format((Number) value);

	    super.stateChanged(e);

	}else{

	    SpinnerModel model = getSpinner().getModel();

	    model.setValue(0);

	    getTextField().setText(text);

	    getTextField().repaint();

	}

    }

}

/* 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.serv.field.component.spinner;

import javax.swing.AbstractSpinnerModel;

import javax.swing.SpinnerModel;

import javax.swing.SpinnerNumberModel;

import javax.swing.event.ChangeListener;

import org.gvsig.tools.dynobject.DynField;

/**

 * @author <a href="mailto:reinhold@uji.es">cmartin</a>

 *

 */

public class NullableNumberSpinnerModel extends SpinnerNumberModel implements SpinnerModel{

    private DynField field;

    private Object number;

    private boolean isFirstTime;

    /**

     * @param field

     * @param value

     */

    public NullableNumberSpinnerModel(DynField field, Number value) {

	super(0, (Comparable<?>) field

		.getMinValue(), (Comparable<?>) field.getMaxValue(), Integer

		.valueOf(1));

	this.field = field;

	this.isFirstTime = true;

	super.setValue(0);

	if (value!=null) 

	    setValue(value);

    }

    /* (non-Javadoc)

     * @see javax.swing.SpinnerModel#getNextValue()

     */

    @Override

    public Object getNextValue() {

	if (!isNull()) {

	    this.number = super.getNextValue();

	    super.setValue(this.number);

	    return this.number;

	}

	super.setValue(0);

	return 0;

    }

    protected boolean isNull(){

	Object value = getValue();

	return ((value== null)||(value.equals("")));

    }

    /* (non-Javadoc)

     * @see javax.swing.SpinnerModel#getPreviousValue()

     */

    @Override

    public Object getPreviousValue() {

	if (isNull()) return null;

	if (this.number.equals(this.getMinimum())){

	    // we are at the minimum value and we want to change to "undetermined"

	    this.number = null;

	    return "";

	}

	return super.getPreviousValue();

    }

    /* (non-Javadoc)

     * @see javax.swing.SpinnerModel#getValue()

     */

    @Override

    public Object getValue() {

	 if (this.isFirstTime){

	     return 0;

	 }

	 if (this.number == null) 

	     return null;

	 return super.getValue();

    }

    /* (non-Javadoc)

     * @see javax.swing.SpinnerModel#setValue(java.lang.Object)

     */

    @Override

    public void setValue(Object value) {

	this.number = value;

	this.isFirstTime = false;

	if (!isNull())

	    super.setValue(value);

	else

	    this.fireStateChanged();

    }

}