/*
* Beryl - A web platform based on XML, XSLT and Java
* This file is part of the Beryl XML GUI
*
* Copyright (C) 2004 Wenzel Jakob <wazlaf@tigris.org>
*
* This program 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; either
* version 2.1 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
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this program; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-3107 USA
*/
package org.beryl.gui.widgets;
import java.awt.Color;
import java.awt.Component;
import java.awt.Dimension;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import javax.swing.JPasswordField;
import javax.swing.JTextField;
import javax.swing.event.DocumentEvent;
import javax.swing.event.DocumentListener;
import org.beryl.gui.GUIEvent;
import org.beryl.gui.GUIEventListener;
import org.beryl.gui.GUIException;
import org.beryl.gui.Widget;
import org.beryl.gui.WidgetInfo;
import org.beryl.gui.model.MapChangeEvent;
import org.beryl.gui.model.MapDataModel;
import org.beryl.gui.model.ModelChangeEvent;
import org.beryl.gui.validators.ValidationException;
public class TextField extends Widget {
protected static WidgetInfo textFieldInfo = null;
private static final Color DEFAULT_COLOR = new Color(255, 255, 255);
private static final Color ERROR_COLOR = new Color(255, 200, 200);
protected JTextField textField = null;
private String key = null;
private boolean sendEvents = true;
private boolean processEvents = true;
static {
textFieldInfo = new WidgetInfo(TextField.class, widgetInfo);
textFieldInfo.addProperty("key", "string", "");
textFieldInfo.addEvent("activated");
};
public TextField(Widget parent, String name) throws GUIException {
super(parent, name);
textField = new JTextField();
}
public void setProperty(String name, Object value) throws GUIException {
if ("key".equals(name))
key = (String) value;
else
super.setProperty(name, value);
}
private void reload() throws GUIException {
MapDataModel model = getDataModel();
if (model != null && key != null) {
try {
processEvents = false;
String value = (String) model.getValue(key);
if (value != null) {
textField.setText(value);
} else {
String text = null;
if (textField instanceof JPasswordField)
text = new String(((JPasswordField) textField).getPassword());
else
text = textField.getText();
model.setValue(TextField.this, key, text);
}
} finally {
processEvents = true;
}
}
}
public String getText() {
return textField.getText();
}
public void validate() throws ValidationException, GUIException {
if (hasValidators()) {
try {
super.validate();
if (textField.getBackground() != DEFAULT_COLOR) {
textField.setBackground(DEFAULT_COLOR);
}
if (getParentWidget() instanceof LabeledWidget) {
((LabeledWidget) getParentWidget()).clearError();
}
} catch (ValidationException e) {
textField.setBackground(ERROR_COLOR);
if (getParentWidget() instanceof LabeledWidget) {
((LabeledWidget) getParentWidget()).setError(e);
}
throw e;
}
}
}
public void modelChanged(ModelChangeEvent e) throws GUIException {
if (processEvents) {
sendEvents = false;
try {
if (e.getSource() == this) {
/* New data model */
reload();
try {
validate();
} catch (ValidationException ex) {
/* Ignore, error status is displayed already */
}
} else if (e instanceof MapChangeEvent) {
MapChangeEvent event = (MapChangeEvent) e;
if (event.getKey() == null) {
reload();
} else if (event.getKey().equals(key)) {
textField.setText((String) event.getNewValue());
}
try {
validate();
} catch (ValidationException ex) {
/* Ignore, error status is displayed already */
}
}
} finally {
sendEvents = true;
}
}
}
public void finalizeConstruction() {
textField.setPreferredSize(new Dimension(MAX_WIDTH, DEFAULT_HEIGHT));
textField.getDocument().addDocumentListener(new DocumentListener() {
public void insertUpdate(DocumentEvent e) {
changedUpdate(e);
}
public void removeUpdate(DocumentEvent e) {
changedUpdate(e);
}
public void changedUpdate(DocumentEvent e) {
if (sendEvents) {
try {
MapDataModel model = getDataModel();
if (model != null && key != null) {
String text = null;
if (textField instanceof JPasswordField)
text = new String(((JPasswordField) textField).getPassword());
else
text = textField.getText();
model.setValue(TextField.this, key, text);
try {
validate();
} catch (ValidationException ex) {
/* Ignore, error status is displayed already */
}
}
} catch (GUIException ex) {
throw new RuntimeException(ex);
}
}
}
});
}
public void addListener(String event, final String name, final GUIEventListener listener) throws GUIException {
if ("activated".equals(event)) {
textField.addActionListener(new ActionListener() {
public void actionPerformed(ActionEvent e) {
listener.eventOccured(new GUIEvent(TextField.this, name, e));
}
});
} else {
super.addListener(event, name, listener);
}
}
public Component getWidget() {
return textField;
}
public WidgetInfo getWidgetInfo() {
return textFieldInfo;
}
}