/*
* RapidMiner
*
* Copyright (C) 2001-2008 by Rapid-I and the contributors
*
* Complete list of developers available at our web site:
*
* http://rapid-i.com
*
* This program is free software: you can redistribute it and/or modify
* it under the terms of the GNU Affero 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 Affero General Public License for more details.
*
* You should have received a copy of the GNU Affero General Public License
* along with this program. If not, see http://www.gnu.org/licenses/.
*/
package com.rapidminer.gui.look.fc;
import java.awt.event.InputMethodEvent;
import java.awt.event.InputMethodListener;
import java.awt.event.KeyAdapter;
import java.awt.event.KeyEvent;
import java.awt.event.KeyListener;
import java.awt.event.MouseAdapter;
import java.awt.event.MouseEvent;
import java.beans.PropertyChangeEvent;
import java.beans.PropertyChangeListener;
import java.util.Enumeration;
import java.util.Vector;
import javax.swing.JList;
import javax.swing.JPopupMenu;
import javax.swing.JScrollPane;
import javax.swing.JTextField;
import javax.swing.ListSelectionModel;
import javax.swing.event.CaretEvent;
import javax.swing.event.CaretListener;
import javax.swing.event.ListSelectionEvent;
import javax.swing.event.ListSelectionListener;
import javax.swing.text.BadLocationException;
/**
* This text field is connected to the file chooser and provides some automation mechanisms.
*
* @author Ingo Mierswa
* @version $Id: AutomaticTextField.java,v 1.2 2008/05/09 19:22:53 ingomierswa Exp $
*/
public class AutomaticTextField extends JTextField implements KeyListener, CaretListener, InputMethodListener {
private static final long serialVersionUID = 9138792080755085206L;
private FileChooserUI fileChooserUI;
private JList itemList = new JList(new Object[] {});
private JPopupMenu popupMenu = new JPopupMenu();
private Vector<String> fileList = new Vector<String>();
private int caretPosition = 0;
private String mainText;
public AutomaticTextField(FileChooserUI fcui) {
super();
this.fileChooserUI = fcui;
this.addCaretListener(this);
this.addKeyListener(this);
}
private Vector findItems() {
if (this.mainText == null) {
this.mainText = this.getText();
}
this.fileList.removeAllElements();
Enumeration en = this.fileChooserUI.fileList.visibleItemsList.elements();
while (en.hasMoreElements()) {
Item vi = (Item) en.nextElement();
if (vi.getFileName().toLowerCase().startsWith(this.mainText.toLowerCase().substring(0, Math.min(this.caretPosition, this.mainText.length())))) {
this.fileList.add(vi.getFileName());
}
}
return this.fileList;
}
private void generatePopup(boolean help) {
this.popupMenu.setVisible(false);
this.popupMenu.removeAll();
final JTextField t = this;
this.popupMenu.addPropertyChangeListener(new PropertyChangeListener() {
public void propertyChange(PropertyChangeEvent e) {
if (e.getPropertyName().toLowerCase().equals("visible")) {
if (e.getNewValue().toString().toLowerCase().equals("false")) {
AutomaticTextField.this.mainText = t.getText();
}
}
}
});
this.itemList = new JList(findItems());
this.itemList.setSelectionMode(ListSelectionModel.SINGLE_SELECTION);
this.itemList.setBorder(null);
this.itemList.setAutoscrolls(true);
this.itemList.addMouseListener(new MouseAdapter() {
@Override
public void mouseClicked(MouseEvent e) {
AutomaticTextField.this.popupMenu.setVisible(false);
t.setSelectionEnd(0);
t.setCaretPosition(t.getText().length());
}
});
this.itemList.addKeyListener(new KeyAdapter() {
@Override
public void keyPressed(KeyEvent e) {
if (e.getKeyCode() == KeyEvent.VK_ESCAPE) {
AutomaticTextField.this.popupMenu.setVisible(false);
t.setSelectionEnd(0);
t.setText(AutomaticTextField.this.mainText);
t.setCaretPosition(t.getText().length());
} else if (e.getKeyCode() == KeyEvent.VK_ENTER) {
AutomaticTextField.this.popupMenu.setVisible(false);
t.setSelectionEnd(0);
t.setCaretPosition(t.getText().length());
}
}
});
this.itemList.addListSelectionListener(new ListSelectionListener() {
public void valueChanged(ListSelectionEvent e) {
AutomaticTextField.this.itemList.scrollRectToVisible(AutomaticTextField.this.itemList.getCellBounds(AutomaticTextField.this.itemList.getSelectedIndex(), AutomaticTextField.this.itemList.getSelectedIndex()));
String cpt = AutomaticTextField.this.mainText;
try {
cpt = t.getText(AutomaticTextField.this.caretPosition, t.getText().length() - AutomaticTextField.this.caretPosition);
} catch (BadLocationException ex) {
}
if (!AutomaticTextField.this.itemList.getModel().getElementAt(AutomaticTextField.this.itemList.getSelectedIndex()).toString().equals(cpt)) {
t.setText(AutomaticTextField.this.itemList.getModel().getElementAt(AutomaticTextField.this.itemList.getSelectedIndex()).toString());
t.setCaretPosition(AutomaticTextField.this.caretPosition);
if ((AutomaticTextField.this.caretPosition == 0) || !t.getText().toLowerCase().startsWith(AutomaticTextField.this.mainText.toLowerCase())) {
t.select(0, t.getText().length());
} else {
t.select(AutomaticTextField.this.mainText.length(), t.getText().length());
}
}
}
});
JScrollPane scroller = new JScrollPane(this.itemList);
scroller.setBorder(null);
scroller.setFocusable(false);
this.popupMenu.add(scroller);
int h = 30;
try {
if (this.itemList.getModel().getSize() > 0) {
h = (int) (this.itemList.getModel().getSize() * this.itemList.getCellBounds(0, 0).getHeight()) + 10;
}
} catch (Exception exp) {
}
this.popupMenu.setPopupSize(this.getWidth() - 6, Math.min(100, h));
if (this.itemList.getModel().getSize() > 0) {
this.popupMenu.show(this, 3, this.getHeight() - 2);
if (help) {
this.itemList.getSelectionModel().setSelectionInterval(0, 0);
}
}
}
public void keyPressed(KeyEvent e) {
if (e.getKeyCode() == KeyEvent.VK_ENTER) {
this.popupMenu.setVisible(false);
this.setSelectionEnd(0);
this.setCaretPosition(this.getText().length());
this.mainText = this.getText();
} else if (e.getKeyCode() == KeyEvent.VK_ESCAPE) {
if (this.popupMenu.isVisible()) {
this.setText(this.mainText);
this.popupMenu.setVisible(false);
this.setSelectionEnd(0);
this.setCaretPosition(this.getText().length());
e.consume();
}
} else if (e.getKeyCode() == KeyEvent.VK_LEFT) {
this.caretPosition = this.getCaretPosition();
generatePopup(false);
this.requestFocus();
} else if (e.getKeyCode() == KeyEvent.VK_RIGHT) {
this.caretPosition = this.getCaretPosition();
generatePopup(false);
if (!this.popupMenu.isVisible()) {
this.setText(this.mainText);
this.setCaretPosition(this.caretPosition);
}
this.requestFocus();
} else if (e.getKeyCode() == KeyEvent.VK_UP) {
if (!this.popupMenu.isVisible()) {
generatePopup(true);
}
int n = this.itemList.getSelectedIndex();
n -= 1;
if (n < 0) {
n = 0;
}
this.itemList.setSelectedIndex(n);
this.requestFocus();
} else if (e.getKeyCode() == KeyEvent.VK_DOWN) {
if (!this.popupMenu.isVisible()) {
generatePopup(true);
}
int n = this.itemList.getSelectedIndex();
n += 1;
if (n >= this.itemList.getModel().getSize()) {
n = this.itemList.getModel().getSize() - 1;
}
this.itemList.setSelectedIndex(n);
this.requestFocus();
} else if ((e.getKeyCode() == KeyEvent.VK_BACK_SPACE) || (e.getKeyCode() == KeyEvent.VK_DELETE)) {
e.consume();
this.mainText = this.getText();
this.requestFocus();
}
if (e.isActionKey() && this.popupMenu.isVisible()) {
e.consume();
}
}
public void keyReleased(KeyEvent e) {
if ((e.getKeyCode() == KeyEvent.VK_ESCAPE) || (e.getKeyCode() == KeyEvent.VK_BACK_SPACE)) {
e.consume();
} else if (!e.isActionKey()) {
this.mainText = this.getText();
generatePopup(true);
this.requestFocus();
}
}
public void keyTyped(KeyEvent e) {
if ((e.getKeyCode() == KeyEvent.VK_ESCAPE) || (e.getKeyCode() == KeyEvent.VK_BACK_SPACE)) {
e.consume();
}
}
public void caretUpdate(CaretEvent e) {
this.caretPosition = e.getDot();
}
public void propertyChange(PropertyChangeEvent evt) {}
public void caretPositionChanged(InputMethodEvent event) {}
public void inputMethodTextChanged(InputMethodEvent event) {}
}