Application: gvSIG desktop

/**

 * gvSIG. Desktop Geographic Information System.

 *

 * Copyright (C) 2007-2013 gvSIG Association.

 *

 * 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 3

 * 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.

 *

 * For any additional information, do not hesitate to contact us

 * at info AT gvsig.com, or visit our website www.gvsig.com.

 */

package org.gvsig.gui.beans.comboboxconfigurablelookup.programmertests;

import java.awt.Component;

import java.awt.event.ActionListener;

import java.awt.event.FocusEvent;

import java.awt.event.FocusListener;

import java.lang.reflect.Method;

import javax.swing.ComboBoxEditor;

import javax.swing.JTextField;

import javax.swing.border.Border;

import javax.swing.plaf.basic.BasicComboBoxEditor;

import org.gvsig.gui.beans.editabletextcomponent.JEditableTextField;

/**

 * <p>The default editor for editable combo boxes. The editor is implemented as a JTextField.</p>

 *

 * @version 12/02/08

 * @author Arnaud Weber

 * @author Mark Davidson

 * @author Pablo Piqueras Bartolom?

 */

public class SampleComboBoxEditor implements ComboBoxEditor, FocusListener {

    protected JTextField editor;

    private Object oldValue;

    public SampleComboBoxEditor() {

        editor = new BorderlessTextField("",9);

        editor.setBorder(null);

    }

    public Component getEditorComponent() {

        return editor;

    }

    /** 

     * Sets the item that should be edited. 

     *

     * @param anObject the displayed value of the editor

     */

    public void setItem(Object anObject) {

        if ( anObject != null )  {

            editor.setText(anObject.toString());

            oldValue = anObject;

        } else {

            editor.setText("");

        }

    }

    public Object getItem() {

        Object newValue = editor.getText();

        if (oldValue != null && !(oldValue instanceof String))  {

            // The original value is not a string. Should return the value in it's

            // original type.

            if (newValue.equals(oldValue.toString()))  {

                return oldValue;

            } else {

                // Must take the value from the editor and get the value and cast it to the new type.

                Class cls = oldValue.getClass();

                try {

                    Method method = cls.getMethod("valueOf", new Class[]{String.class});

                    newValue = method.invoke(oldValue, new Object[] { editor.getText()});

                } catch (Exception ex) {

                    // Fail silently and return the newValue (a String object)

                }

            }

        }

        return newValue;

    }

    public void selectAll() {

        editor.selectAll();

        editor.requestFocus();

    }

    // This used to do something but now it doesn't.  It couldn't be

    // removed because it would be an API change to do so.

    public void focusGained(FocusEvent e) {}

    // This used to do something but now it doesn't.  It couldn't be

    // removed because it would be an API change to do so.

    public void focusLost(FocusEvent e) {}

    public void addActionListener(ActionListener l) {

        editor.addActionListener(l);

    }

    public void removeActionListener(ActionListener l) {

        editor.removeActionListener(l);

    }

    /** 

     * Inner text field editable as a component of a ComboBox editor.

     * 

     * @see JEditableTextField

     * 

     * @version 12/02/08

     * @author Arnaud Weber

     * @author Mark Davidson

     * @author Pablo Piqueras Bartolom?

     */

    private class BorderlessTextField extends JEditableTextField {

                private static final long serialVersionUID = -3333236529430569318L;

                public BorderlessTextField(String value,int n) {

            super(value,n);

        }

        // workaround for 4530952

        public void setText(String s) {

            if (getText().equals(s)) {

                return;

            }

            super.setText(s);

        }

        public void setBorder(Border b) {}

    }

    /**

     * A subclass of BasicComboBoxEditor that implements UIResource.

     * BasicComboBoxEditor doesn't implement UIResource

     * directly so that applications can safely override the

     * cellRenderer property with BasicListCellRenderer subclasses.

     * <p>

     * <strong>Warning:</strong>

     * Serialized objects of this class will not be compatible with

     * future Swing releases. The current serialization support is

     * appropriate for short term storage or RMI between applications running

     * the same version of Swing.  As of 1.4, support for long term storage

     * of all JavaBeans<sup><font size="-2">TM</font></sup>

     * has been added to the <code>java.beans</code> package.

     * Please see {@link java.beans.XMLEncoder}.

     */

    public static class UIResource extends BasicComboBoxEditor

    implements javax.swing.plaf.UIResource {

    }

}