// **********************************************************************
//
// <copyright>
//
// BBN Technologies
// 10 Moulton Street
// Cambridge, MA 02138
// (617) 873-8000
//
// Copyright (C) BBNT Solutions LLC. All rights reserved.
//
// </copyright>
// **********************************************************************
//
// $Source: /cvs/distapps/openmap/src/openmap/com/bbn/openmap/util/propertyEditor/FilePropertyEditor.java,v $
// $RCSfile: FilePropertyEditor.java,v $
// $Revision: 1.4.2.3 $
// $Date: 2005/05/24 18:38:30 $
// $Author: dietrick $
//
// **********************************************************************
package com.bbn.openmap.util.propertyEditor;
import java.awt.Component;
import java.awt.GridBagConstraints;
import java.awt.GridBagLayout;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import java.beans.PropertyEditorSupport;
import javax.swing.JButton;
import javax.swing.JFileChooser;
import javax.swing.JPanel;
import javax.swing.JTextField;
/**
* A PropertyEditor that brings up a JFileChooser panel to select a
* file. A single file choice can be made, and only choices that
* reside on the local file system.
*/
public class FilePropertyEditor extends PropertyEditorSupport implements
ActionListener {
/** The Component returned by getCustomEditor(). */
protected JButton button;
protected JTextField textField = new JTextField(15);
/** Create FilePropertyEditor. */
public FilePropertyEditor() {
button = new JButton(getButtonTitle());
textField.setEditable(isTextFieldEditable());
}
/**
* Internal callback method that can be overridden by subclasses.
*
* @return "Set" for FilePropertyEditor.
*/
public String getButtonTitle() {
return "Set";
}
/**
* Internal callback method that can be overridden by subclasses.
*
* @return false for FilePropertyEditor.
*/
public boolean isTextFieldEditable() {
return false;
}
/**
* Internal callback method that can be overridden by subclasses.
*
* @return JFileChooser.FILES_ONLY for FilePropertyEditor.
*/
public int getFileSelectionMode() {
return JFileChooser.FILES_ONLY;
}
/**
* Internal callback method that can be overridden by subclasses.
*
* @return false for FilePropertyEditor.
*/
public boolean isMultiSelectEnabled() {
return false;
}
//
// PropertyEditor interface
//
/**
* PropertyEditor interface.
*
* @return true
*/
public boolean supportsCustomEditor() {
return true;
}
public void actionPerformed(ActionEvent e) {
JFileChooser chooser = getFileChooser();
int returnVal = chooser.showOpenDialog((Component) null);
if (returnVal == JFileChooser.APPROVE_OPTION) {
String newFilename = chooser.getSelectedFile().getAbsolutePath();
newFilename = cleanUpName(newFilename);
textField.setText(newFilename);
firePropertyChange();
}
}
/**
* Change double backslashes to forward slash, OK for java world.
*/
protected String cleanUpName(String name) {
// replace all back slashes with forward slashes to permit
// safe writing and reading from PrintStreams
return name.replace('\\', '/').trim();
}
/**
* Returns an uneditable text area with a JButton that will bring
* up a JFileChooser dialog.
*
* @return JButton button
*/
public Component getCustomEditor() {
button.addActionListener(this);
JPanel jp = new JPanel();
GridBagLayout gridbag = new GridBagLayout();
GridBagConstraints c = new GridBagConstraints();
jp.setLayout(gridbag);
c.weightx = 1f;
c.fill = GridBagConstraints.HORIZONTAL;
gridbag.setConstraints(textField, c);
jp.add(textField);
c.weightx = 0;
c.anchor = GridBagConstraints.EAST;
c.fill = GridBagConstraints.NONE;
gridbag.setConstraints(button, c);
jp.add(button);
return jp;
}
public JFileChooser getFileChooser() {
JFileChooser chooser = new JFileChooser(getLastLocation());
chooser.setFileSelectionMode(getFileSelectionMode());
chooser.setMultiSelectionEnabled(isMultiSelectEnabled());
return chooser;
}
/** Implement PropertyEditor interface. */
public void setValue(Object someObj) {
if (someObj instanceof String) {
textField.setText((String) someObj);
}
}
/** Implement PropertyEditor interface. */
public String getAsText() {
return textField.getText();
}
public String getLastLocation() {
String currentLocation = getAsText();
char sepChar = '/'; // Java path separator
int lastSepIndex = currentLocation.lastIndexOf(sepChar);
// System.out.println(currentLocation + ", index of " +
// sepChar + " is at " + lastSepIndex);
if (currentLocation.equals("") || lastSepIndex == -1) {
currentLocation = null;
} else {
String substring = currentLocation.substring(0, lastSepIndex);
// System.out.println(substring);
currentLocation = substring;
}
return currentLocation;
}
}