/*******************************************************************************
* Copyright (c) 2006, 2008 Soyatec (http://www.soyatec.com) 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:
* Soyatec - initial API and implementation
*******************************************************************************/
package org.eclipse.e4.xwt.javabean.metadata.properties;
import java.beans.PropertyDescriptor;
import java.lang.annotation.Annotation;
import java.lang.reflect.InvocationTargetException;
import java.lang.reflect.Method;
import org.eclipse.e4.xwt.XWTException;
import org.eclipse.e4.xwt.annotation.Containment;
import org.eclipse.e4.xwt.core.IBinding;
import org.eclipse.e4.xwt.internal.utils.ObjectUtil;
import org.eclipse.e4.xwt.internal.utils.UserData;
public class BeanProperty extends AbstractProperty {
protected PropertyDescriptor descriptor;
private boolean containment = false;
public BeanProperty(PropertyDescriptor descriptor) {
super(descriptor.getName(), descriptor.getPropertyType());
this.descriptor = descriptor;
Method readMethod = descriptor.getReadMethod();
if (readMethod != null) {
Annotation annotation = readMethod.getAnnotation(Containment.class);
if (annotation != null) {
containment = true;
}
}
Method writeMethod = descriptor.getWriteMethod();
if (writeMethod != null) {
Annotation annotation = writeMethod.getAnnotation(Containment.class);
if (annotation != null) {
containment = true;
}
}
}
public void setValue(Object target, Object value)
throws IllegalArgumentException, IllegalAccessException,
InvocationTargetException, SecurityException, NoSuchFieldException {
if (descriptor != null && descriptor.getWriteMethod() != null) {
Method writeMethod = descriptor.getWriteMethod();
// Bug of invoke boolean value.
Class<?>[] parameterTypes = writeMethod.getParameterTypes();
if (parameterTypes.length == 1) {
Class<?> type = parameterTypes[0];
Class<?> propertyType = getType();
if (propertyType != Object.class) {
type = propertyType;
}
if (!ObjectUtil.isAssignableFrom(IBinding.class, propertyType)) {
if (value != null && type != value.getClass()) {
value = ObjectUtil.resolveValue(value, type, value);
}
}
Object oldValue = null;
Method readMethod = descriptor.getReadMethod();
if (readMethod != null) {
oldValue = readMethod.invoke(target);
}
if (value == null && type != null
&& UserData.getWidget(target) != null) {
if (type == String.class) {
value = "";
} else if (type == Boolean.class) {
value = false;
}
}
if (oldValue != value) {
writeMethod.setAccessible(true);
try {
writeMethod.invoke(target, value);
fireSetPostAction(target, this, value);
} catch (IllegalArgumentException e) {
if (value == null) {
throw new XWTException("Property type " + getName()
+ " of " + target.getClass().getName()
+ " cannot be null.", e);
}
throw new XWTException("Property type " + getName()
+ " of " + target.getClass().getName()
+ " is mismatch with "
+ value.getClass().getName()
+ " expected type is "
+ parameterTypes[0].getName(), e);
}
catch (InvocationTargetException e) {
throw new XWTException("Problem of invoke " + getName()
+ " of " + target.getClass().getName()
+ " with a value of type "
+ value.getClass().getName(), e);
}
}
}
}
}
public Object getValue(Object target) throws IllegalArgumentException,
IllegalAccessException, InvocationTargetException,
SecurityException, NoSuchFieldException {
if (descriptor != null && descriptor.getReadMethod() != null) {
Method readMethod = descriptor.getReadMethod();
readMethod.setAccessible(true);
return readMethod.invoke(target);
}
return null;
}
@Override
public boolean isDefault() {
return true;
}
public boolean isContainement() {
return containment;
}
public boolean isReadOnly() {
return descriptor.getWriteMethod() == null;
}
}