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* Licensed to the Apache Software Foundation (ASF) under one
* or more contributor license agreements. See the NOTICE file
* distributed with this work for additional information
* regarding copyright ownership. The ASF licenses this file
* to you under the Apache License, Version 2.0 (the
* "License"); you may not use this file except in compliance
* with the License. You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing,
* software distributed under the License is distributed on an
* "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
* KIND, either express or implied. See the License for the
* specific language governing permissions and limitations
* under the License.
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package org.apache.cayenne.swing;
import java.awt.Color;
import java.awt.Component;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import javax.swing.InputVerifier;
import javax.swing.JComponent;
import javax.swing.JTextArea;
import javax.swing.JTextField;
import javax.swing.event.DocumentEvent;
import javax.swing.event.DocumentListener;
import javax.swing.text.JTextComponent;
import org.apache.cayenne.modeler.dialog.validator.ValidatorDialog;
import org.apache.cayenne.validation.ValidationException;
/**
* A generic text adapter that is bound to a bean property.
*
* @author Andrei Adamchik
*/
public class TextBinding extends BindingBase {
protected JTextComponent textComponent;
protected Color defaultBGColor;
protected Color errorColor;
protected String defaultToolTip;
public TextBinding(JTextField textField, String expression) {
super(expression);
this.textComponent = textField;
initComponentDefaults();
textField.addActionListener(new ActionListener() {
public void actionPerformed(ActionEvent e) {
updateModel();
}
});
textComponent.setInputVerifier(new InputVerifier() {
public boolean verify(JComponent c) {
updateModel();
// release focus after coloring the field...
return true;
}
});
}
public TextBinding(JTextArea textArea, String property) {
super(property);
this.textComponent = textArea;
initComponentDefaults();
textComponent.getDocument().addDocumentListener(new DocumentListener() {
public void insertUpdate(DocumentEvent e) {
verifyTextChange(e);
}
public void changedUpdate(DocumentEvent e) {
verifyTextChange(e);
}
public void removeUpdate(DocumentEvent e) {
verifyTextChange(e);
}
void verifyTextChange(DocumentEvent e) {
if (!modelUpdateDisabled) {
updateModel();
}
}
});
}
protected void initComponentDefaults() {
this.errorColor = ValidatorDialog.WARNING_COLOR;
this.defaultBGColor = textComponent.getBackground();
this.defaultToolTip = textComponent.getToolTipText();
}
public void updateView() {
Object value = getValue();
String text = (value != null) ? value.toString() : null;
modelUpdateDisabled = true;
try {
clear();
textComponent.setText(text);
}
finally {
modelUpdateDisabled = false;
}
}
/**
* Returns internal text component.
*/
public Component getView() {
return textComponent;
}
protected void updateModel() {
try {
setValue(textComponent.getText());
clear();
}
catch (ValidationException vex) {
textComponent.setBackground(errorColor);
textComponent.setToolTipText(vex.getUnlabeledMessage());
}
}
protected void clear() {
textComponent.setBackground(defaultBGColor);
textComponent.setToolTipText(defaultToolTip);
}
}