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/*******************************************************************************
* Copyright (c) 2006, 2010 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.papyrus.xwt.core;
import org.eclipse.core.databinding.conversion.IConverter;
import org.eclipse.papyrus.xwt.XWT;
import org.eclipse.papyrus.xwt.XWTException;
import org.eclipse.papyrus.xwt.metadata.IMetaclass;
import org.eclipse.papyrus.xwt.metadata.IProperty;
/**
* Setter of the class Style, which is used to define the in-line XAML style
*
* @see Style
* @author yyang
*/
public class Setter extends SetterBase {
protected String property;
protected Object value;
protected String targetName;
public String getTargetName() {
return targetName;
}
public void setTargetName(String targetName) {
this.targetName = targetName;
}
public String getProperty() {
return property;
}
public void setProperty(String property) {
this.property = property;
}
public Object getValue() {
return value;
}
public void setValue(Object value) {
this.value = value;
}
public Object applyTo(Object element, boolean update) {
String propName = getProperty();
Object propValue = getValue();
String targetName = getTargetName();
Object setterTarget = element;
Object oldValue = null;
if(targetName != null) {
setterTarget = TriggerBase.getElementByName(element, targetName);
}
IMetaclass metaclass = XWT.getMetaclass(setterTarget);
IProperty prop = metaclass.findProperty(propName);
if(prop != null && propValue != null) {
Object toValue = propValue;
Class<?> valueType = propValue.getClass();
Class<?> targetType = prop.getType();
if(targetType != null && !targetType.isAssignableFrom(valueType)) {
IConverter converter = XWT.findConvertor(valueType, targetType);
if(converter != null) {
toValue = converter.convert(propValue);
} else {
throw new XWTException("Converter doesn't exist from \"" + valueType.getName() + "\" to \"" + targetType.getName());
}
}
try {
oldValue = prop.getValue(setterTarget);
if(update) {
prop.setValue(setterTarget, toValue);
}
} catch (Exception e) {
throw new RuntimeException(e);
}
}
return oldValue;
}
public void undo(Object element, Object value) {
String propName = getProperty();
String targetName = getTargetName();
Object setterTarget = element;
if(targetName != null) {
setterTarget = TriggerBase.getElementByName(element, targetName);
}
IMetaclass metaclass = XWT.getMetaclass(setterTarget);
IProperty prop = metaclass.findProperty(propName);
if(prop != null) {
try {
prop.setValue(setterTarget, value);
} catch (Exception e) {
throw new RuntimeException(e);
}
}
}
}
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