/*******************************************************************************
* Copyright (c) 2008, 2009 Matthew Hall and others.
* All rights reserved. This program and the accompanying materials
* are made available under the terms of the Eclipse Public License v1.0
* which accompanies this distribution, and is available at
* http://www.eclipse.org/legal/epl-v10.html
*
* Contributors:
* Matthew Hall - initial API and implementation (bug 247997)
* Matthew Hall - bugs 264307, 264619
******************************************************************************/
package org.eclipse.core.internal.databinding.beans;
import java.util.HashMap;
import java.util.Map;
import org.eclipse.core.databinding.beans.PojoProperties;
import org.eclipse.core.databinding.observable.masterdetail.MasterDetailObservables;
import org.eclipse.core.databinding.observable.value.IObservableValue;
import org.eclipse.core.databinding.property.value.DelegatingValueProperty;
import org.eclipse.core.databinding.property.value.IValueProperty;
/**
* @since 3.3
*
*/
public class AnonymousPojoValueProperty extends DelegatingValueProperty {
private final String propertyName;
private Map delegates;
/**
* @param propertyName
* @param valueType
*/
public AnonymousPojoValueProperty(String propertyName, Class valueType) {
super(valueType);
this.propertyName = propertyName;
this.delegates = new HashMap();
}
protected IValueProperty doGetDelegate(Object source) {
return getClassDelegate(source.getClass());
}
private IValueProperty getClassDelegate(Class pojoClass) {
if (delegates.containsKey(pojoClass))
return (IValueProperty) delegates.get(pojoClass);
IValueProperty delegate;
try {
delegate = PojoProperties.value(pojoClass, propertyName,
(Class) getValueType());
} catch (IllegalArgumentException noSuchProperty) {
delegate = null;
}
delegates.put(pojoClass, delegate);
return delegate;
}
public IObservableValue observeDetail(IObservableValue master) {
Object valueType = getValueType();
if (valueType == null)
valueType = inferValueType(master.getValueType());
return MasterDetailObservables.detailValue(master, valueFactory(master
.getRealm()), valueType);
}
private Object inferValueType(Object masterObservableValueType) {
if (masterObservableValueType instanceof Class) {
return getClassDelegate((Class) masterObservableValueType)
.getValueType();
}
return null;
}
public String toString() {
String s = "?." + propertyName; //$NON-NLS-1$
Class valueType = (Class) getValueType();
if (valueType != null)
s += "<" + BeanPropertyHelper.shortClassName(valueType) + ">"; //$NON-NLS-1$//$NON-NLS-2$
return s;
}
}