/*
* Geotoolkit.org - An Open Source Java GIS Toolkit
* http://www.geotoolkit.org
*
* (C) 2009-2012, Open Source Geospatial Foundation (OSGeo)
* (C) 2009-2012, Geomatys
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation;
* version 2.1 of the License.
*
* This library 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.
*/
package org.geotoolkit.internal.swing;
import java.awt.BorderLayout;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import java.io.File;
import java.util.Locale;
import javax.swing.JButton;
import javax.swing.JComponent;
import javax.swing.JFileChooser;
import javax.swing.JLabel;
import javax.swing.JTextField;
import org.geotoolkit.resources.Vocabulary;
/**
* A field for a file or a directory, with a button for bringing the file chooser.
* By default this component is for directories.
*
* @author Martin Desruisseaux (Geomatys)
* @version 3.00
*
* @since 3.00
* @module
*/
public class FileField extends JComponent implements ActionListener {
/**
* For cross-version compatibility.
*/
private static final long serialVersionUID = -4365216544457047082L;
/**
* The directory as a text field.
*/
private final JTextField file = new JTextField();
/**
* The file chooser, created only when needed.
*/
private transient JFileChooser chooser;
/**
* Builds a field for a directory, with a button for bringing the file chooser.
*
* @param locale The locale to use for creating the panel.
* @param label An optional label to put before the directory field, or {@code null}.
* @param vertical {@code true} if the button should be on the bottom instead than on the right side.
*/
public FileField(final Locale locale, final String label, final boolean vertical) {
setLayout(new BorderLayout());
if (label != null) {
add(new JLabel(label), vertical ? BorderLayout.BEFORE_FIRST_LINE : BorderLayout.BEFORE_LINE_BEGINS);
}
add(file, BorderLayout.CENTER);
final JButton open = new JButton(vertical ?
Vocabulary.getResources(locale).getMenuLabel(Vocabulary.Keys.Choose) : "...");
add(open, vertical ? BorderLayout.AFTER_LAST_LINE : BorderLayout.AFTER_LINE_ENDS);
open.addActionListener(this);
}
/**
* Sets the file or directory to be initially proposed.
*
* @param file The file or directory to set, or {@code null} if none.
*/
public void setFile(final File file) {
this.file.setText(file != null ? file.getPath() : "");
}
/**
* Returns the file given by the user.
*
* @return The file or directory given by the user, or the current directory if none.
*/
public File getFile() {
String text = file.getText();
if (text == null || ((text = text.trim()).length()) == 0) {
text = ".";
}
return new File(text);
}
/**
* Invoked when the user click on the button. This method popup the file chooser.
*
* @param event The event (ignored).
*/
@Override
public void actionPerformed(final ActionEvent event) {
if (chooser == null) {
chooser = new JFileChooser(file.getText());
chooser.setFileSelectionMode(JFileChooser.DIRECTORIES_ONLY);
} else {
chooser.setCurrentDirectory(new File(file.getText()));
}
if (chooser.showOpenDialog(getParent()) == JFileChooser.APPROVE_OPTION) {
setFile(chooser.getSelectedFile());
}
}
}