// Copyright 2011 Palantir Technologies
//
// Licensed 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.
package com.palantir.ptoss.cinch.swing;
import java.beans.IntrospectionException;
import java.lang.reflect.Field;
import java.util.Collection;
import javax.swing.event.DocumentEvent;
import javax.swing.event.DocumentListener;
import javax.swing.text.JTextComponent;
import com.google.common.collect.ImmutableList;
import com.palantir.ptoss.cinch.core.*;
import com.palantir.ptoss.cinch.swing.Bound.Wiring;
import com.palantir.ptoss.util.Mutator;
/**
* A {@link WiringHarness} for binding a {@link JTextComponent} to a {@link String} value in a
* {@link BindableModel}.
*/
public class JTextComponentWiringHarness implements WiringHarness<Bound, Field> {
public Collection<Binding> wire(Bound bound, BindingContext context, Field field) throws IllegalAccessException, IntrospectionException {
JTextComponent textComponent = context.getFieldObject(field, JTextComponent.class);
Mutator mutator = Mutator.create(context, bound.to());
Binding binding = bindJTextComponent(mutator, textComponent);
if (binding == null) {
return ImmutableList.of();
}
return ImmutableList.of(binding);
}
public static Binding bindJTextComponent(final Mutator mutator, final JTextComponent textField) {
if (mutator.getSetter() != null) {
textField.getDocument().addDocumentListener(new DocumentListener() {
public void removeUpdate(DocumentEvent e) {
updateModel();
}
public void insertUpdate(DocumentEvent e) {
updateModel();
}
public void changedUpdate(DocumentEvent e) {
updateModel();
}
private void updateModel() {
try {
mutator.set(textField.getText());
} catch (Exception ex) {
Wiring.logger.error("exception in JTextField binding", ex);
}
}
});
}
Binding binding = null;
if (mutator.getGetter() != null) {
binding = new Binding() {
public <T extends Enum<?> & ModelUpdate> void update(T... changed) {
try {
String string = (String)mutator.get();
if (string == null) {
string = "";
}
if (!string.equals(textField.getText())) {
textField.setText(string);
}
} catch (Exception ex) {
Wiring.logger.error("exception in JTextField binding", ex);
}
}
};
mutator.getModel().bind(binding);
}
return binding;
}
}