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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.converters;
import org.eclipse.core.databinding.conversion.IConverter;
/**
* Safely SWT context values, it used to avoid a NullPointerException when set text values to SWT Widgets.
*
* @author jliu
*/
public class ObjectToString implements IConverter {
public static ObjectToString FROM_OBJECT = new ObjectToString(Object.class);
public static ObjectToString FROM_INTEGER = new ObjectToString(Integer.class);
public static ObjectToString FROM_SHORT = new ObjectToString(Short.class);
public static ObjectToString FROM_LONG = new ObjectToString(Long.class);
private Class<?> fromType;
public ObjectToString(Class<?> fromType) {
this.fromType = fromType;
}
/*
* (non-Javadoc)
*
* @see org.eclipse.core.databinding.conversion.IConverter#convert(java.lang.Object)
*/
public Object convert(Object fromObject) {
if (fromObject == null) {
return "";
}
return fromObject.toString();
}
/*
* (non-Javadoc)
*
* @see org.eclipse.core.databinding.conversion.IConverter#getFromType()
*/
public Object getFromType() {
if (fromType == null) {
return Object.class;
}
return fromType;
}
/*
* (non-Javadoc)
*
* @see org.eclipse.core.databinding.conversion.IConverter#getToType()
*/
public Object getToType() {
return String.class;
}
}
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