/********************************************************************************
* *
* (c) Copyright 2010 Verizon Communications USA and The Open University UK *
* *
* This software is freely distributed in accordance with *
* the GNU Lesser General Public (LGPL) license, version 3 or later *
* as published by the Free Software Foundation. *
* For details see LGPL: http://www.fsf.org/licensing/licenses/lgpl.html *
* and GPL: http://www.fsf.org/licensing/licenses/gpl-3.0.html *
* *
* This software is provided by the copyright holders and contributors "as is" *
* and any express or implied warranties, including, but not limited to, the *
* implied warranties of merchantability and fitness for a particular purpose *
* are disclaimed. In no event shall the copyright owner or contributors be *
* liable for any direct, indirect, incidental, special, exemplary, or *
* consequential damages (including, but not limited to, procurement of *
* substitute goods or services; loss of use, data, or profits; or business *
* interruption) however caused and on any theory of liability, whether in *
* contract, strict liability, or tort (including negligence or otherwise) *
* arising in any way out of the use of this software, even if advised of the *
* possibility of such damage. *
* *
********************************************************************************/
package com.compendium.ui;
import java.io.File;
import javax.swing.JFileChooser;
import javax.swing.JOptionPane;
import com.compendium.LanguageProperties;
/**
* This class extends JFileChooser to allow the user to chooser whether to over write an existing file.
* It also add am image preview pane.
*
* @author Michelle Bachler
*/
public class UIFileChooser extends JFileChooser {
/** The required extension for this file chooser dialog.*/
String sRequiredExtension = ""; //$NON-NLS-1$
/**
* Constructor.
* @param extension, the required file extension to enforce for this file chooser.
*/
public void setRequiredExtension(String extension) {
sRequiredExtension = extension;
}
/**
* Approve the file selection against the required extension.
*/
public void approveSelection() {
File file = getSelectedFile();
if (file == null) {
// no file selected ... -> cancelSelection()
}
else {
if (getDialogType() == JFileChooser.SAVE_DIALOG) {
String fileName = file.getAbsolutePath();
File newfile = file;
if (fileName != null && !sRequiredExtension.equals("")) { //$NON-NLS-1$
if ( !fileName.toLowerCase().endsWith(sRequiredExtension) ) {
fileName = fileName+sRequiredExtension;
newfile = new File(fileName);
setSelectedFile(newfile);
}
}
if (newfile.exists()) {
int answer = JOptionPane.showConfirmDialog(this, LanguageProperties.getString(LanguageProperties.UI_GENERAL_BUNDLE, "UIFileChooser.fileExists"), LanguageProperties.getString(LanguageProperties.UI_GENERAL_BUNDLE, "UIFileChooser.warning"), //$NON-NLS-1$ //$NON-NLS-2$
JOptionPane.OK_CANCEL_OPTION, JOptionPane.WARNING_MESSAGE);
if (answer == JOptionPane.OK_OPTION) {
super.approveSelection();
}
else {
// a user cancelled over write.
}
}
else {
super.approveSelection();
}
}
else if (getDialogType() == JFileChooser.OPEN_DIALOG) {
String fileName = file.getAbsolutePath();
if (fileName != null) {
if (!sRequiredExtension.equals("")) { //$NON-NLS-1$
if ( !fileName.toLowerCase().endsWith(sRequiredExtension) ) {
JOptionPane.showMessageDialog(this, LanguageProperties.getString(LanguageProperties.UI_GENERAL_BUNDLE, "UIFileChooser.selectFile")+" '"+sRequiredExtension+"'"); //$NON-NLS-1$ //$NON-NLS-2$ //$NON-NLS-3$
}
else {
super.approveSelection();
}
}
else {
super.approveSelection();
}
}
}
else {
super.approveSelection();
}
}
}
}