/*!
* This program is free software; you can redistribute it and/or modify it under the
* terms of the GNU Lesser General Public License, version 2.1 as published by the Free Software
* Foundation.
*
* You should have received a copy of the GNU Lesser General Public License along with this
* program; if not, you can obtain a copy at http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html
* or from the Free Software Foundation, Inc.,
* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
*
* 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 Lesser General Public License for more details.
*
* Copyright (c) 2002-2013 Pentaho Corporation.. All rights reserved.
*/
package org.pentaho.reporting.designer.core.editor.parameters;
import java.awt.Component;
import java.awt.event.ActionListener;
import javax.swing.ComboBoxEditor;
import javax.swing.JTextField;
import javax.swing.border.Border;
import javax.swing.event.EventListenerList;
import org.pentaho.reporting.libraries.base.util.ObjectUtilities;
/**
* Todo: Document me!
* <p/>
* Date: 14.05.2009
* Time: 16:58:04
*
* @author Thomas Morgner.
*/
public class ClassComboBoxEditor implements ComboBoxEditor
{
private static class BorderlessTextField extends JTextField
{
private BorderlessTextField()
{
}
public void setText(final String s)
{
if (getText().equals(s))
{
return;
}
super.setText(s);
}
public void setBorder(final Border b)
{
// ignore any request to change the border.
}
}
private EventListenerList listenerList;
private JTextField textField;
private Class value;
private Class[] classes;
public ClassComboBoxEditor()
{
this(false, null);
}
public ClassComboBoxEditor(final boolean withBorder, final Class[] classes)
{
this.listenerList = new EventListenerList();
if (withBorder)
{
this.textField = new JTextField();
}
else
{
this.textField = new BorderlessTextField();
}
this.textField.setDisabledTextColor(textField.getForeground());
this.classes = classes;
}
/**
* Return the component that should be added to the tree hierarchy for this editor
*/
public Component getEditorComponent()
{
return textField;
}
/**
* Set the item that should be edited. Cancel any editing if necessary *
*/
public void setItem(final Object anObject)
{
if (anObject == null)
{
this.value = null;
this.textField.setText(null);
}
else
{
final Class fe = (Class) anObject;
this.value = fe;
this.textField.setText(ClassListCellRenderer.getSimpleName(fe));
}
}
/**
* Return the edited item *
*/
public Object getItem()
{
final String inputVal = textField.getText();
final Class inputClass = findClass(inputVal);
try
{
final ClassLoader loader = ObjectUtilities.getClassLoader(ClassComboBoxEditor.class);
return Class.forName(inputClass != null ? inputClass.getName() : inputVal, false, loader);
}
catch (ClassNotFoundException e)
{
// ignore, return old value
if (value != null)
{
textField.setText(value.getName());
}
else
{
textField.setText(null);
}
}
return value;
}
/**
* Ask the editor to start editing and to select everything *
*/
public void selectAll()
{
this.textField.requestFocus();
this.textField.select(0, this.textField.getText().length());
}
/**
* Add an ActionListener. An action event is generated when the edited item changes *
*/
public void addActionListener(final ActionListener l)
{
listenerList.add(ActionListener.class, l);
}
/**
* Remove an ActionListener *
*/
public void removeActionListener(final ActionListener l)
{
listenerList.remove(ActionListener.class, l);
}
private Class findClass(final String className)
{
if (classes == null)
{
return null;
}
if (className == null)
{
return null;
}
for (final Class aClass : classes)
{
final String simpleName = ClassListCellRenderer.getSimpleName(aClass);
if (className.equals(simpleName) || className.equals(aClass.getName()))
{
return aClass;
}
}
return null;
}
}