/* | |
* Copyright 2007 the original author or authors. | |
* | |
* 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 groovy.swing.binding; | |
import org.codehaus.groovy.binding.FullBinding; | |
import org.codehaus.groovy.binding.PropertyBinding; | |
import org.codehaus.groovy.binding.SourceBinding; | |
import org.codehaus.groovy.binding.TargetBinding; | |
import org.codehaus.groovy.binding.TriggerBinding; | |
import org.codehaus.groovy.binding.AbstractFullBinding; | |
import javax.swing.event.DocumentEvent; | |
import javax.swing.event.DocumentListener; | |
import javax.swing.text.Document; | |
import javax.swing.text.JTextComponent; | |
import java.beans.PropertyChangeEvent; | |
import java.beans.PropertyChangeListener; | |
import java.util.HashMap; | |
import java.util.Map; | |
/** | |
* @author <a href="mailto:shemnon@yahoo.com">Danno Ferrin</a> | |
* @version $Revision$ | |
* @since Groovy 1.1 | |
*/ | |
public class JTextComponentProperties { | |
public static Map/*<String, TriggerBinding>*/ getSyntheticProperties() { | |
Map/*<String, TriggerBinding>*/ result = new HashMap/*<String, TriggerBinding>*/(); | |
result.put(JTextComponent.class.getName() + "#text", | |
new TriggerBinding() { | |
public FullBinding createBinding(SourceBinding source, TargetBinding target) { | |
return new JTextComponentTextBinding((PropertyBinding) source, target); | |
} | |
}); | |
return result; | |
} | |
} | |
class JTextComponentTextBinding extends AbstractFullBinding implements PropertyChangeListener, DocumentListener { | |
boolean bound; | |
JTextComponent boundTextComponent; | |
public JTextComponentTextBinding(PropertyBinding source, TargetBinding target) { | |
bound = false; | |
setSourceBinding(source); | |
setTargetBinding(target); | |
} | |
public synchronized void bind() { | |
if (!bound) { | |
boundTextComponent = (JTextComponent) ((PropertyBinding)sourceBinding).getBean(); | |
try { | |
boundTextComponent.addPropertyChangeListener("document", this); | |
boundTextComponent.getDocument().addDocumentListener(this); | |
bound = true; | |
} catch (RuntimeException re) { | |
try { | |
boundTextComponent.removePropertyChangeListener("document", this); | |
boundTextComponent.getDocument().removeDocumentListener(this); | |
} catch (Exception e) { | |
// ignore as we are re-throwing the original cause | |
} | |
throw re; | |
} | |
} | |
} | |
public synchronized void unbind() { | |
if (bound) { | |
bound = false; | |
// fail dirty, no checks | |
boundTextComponent.removePropertyChangeListener("document", this); | |
boundTextComponent.getDocument().removeDocumentListener(this); | |
boundTextComponent = null; | |
} | |
} | |
public void rebind() { | |
if (bound) { | |
unbind(); | |
bind(); | |
} | |
} | |
public void setSourceBinding(SourceBinding source) { | |
if (!(source instanceof PropertyBinding)) { | |
throw new IllegalArgumentException("Only PropertyBindings are accepted"); | |
} | |
if (!"text".equals(((PropertyBinding)source).getPropertyName())) { | |
throw new IllegalArgumentException("PropertyName must be 'text'"); | |
} | |
if (!(((PropertyBinding)source).getBean() instanceof JTextComponent)) { | |
throw new IllegalArgumentException("SourceBean must be a TextComponent"); | |
} | |
super.setSourceBinding(source); | |
} | |
public void setTargetBinding(TargetBinding target) { | |
super.setTargetBinding(target); | |
} | |
public void propertyChange(PropertyChangeEvent event) { | |
update(); | |
((Document)event.getOldValue()).removeDocumentListener(this); | |
((Document)event.getNewValue()).addDocumentListener(this); | |
} | |
public void changedUpdate(DocumentEvent event) { | |
update(); | |
} | |
public void insertUpdate(DocumentEvent event) { | |
update(); | |
} | |
public void removeUpdate(DocumentEvent event) { | |
update(); | |
} | |
} |