/******************************************************************************* | |
* 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.xwt.converters; | |
import java.util.Collection; | |
import org.eclipse.core.databinding.conversion.IConverter; | |
import org.eclipse.jface.viewers.ISelection; | |
import org.eclipse.jface.viewers.StructuredSelection; | |
/** | |
* Safely SWT context values, it used to avoid a NullPointerException when set | |
* text values to SWT Widgets. | |
* | |
* @author jliu | |
*/ | |
public class ObjectToISelection implements IConverter { | |
public static ObjectToISelection instance = new ObjectToISelection(); | |
/* | |
* (non-Javadoc) | |
* | |
* @see | |
* org.eclipse.core.databinding.conversion.IConverter#convert(java.lang. | |
* Object) | |
*/ | |
public Object convert(Object fromObject) { | |
if (fromObject == null) { | |
return new StructuredSelection(); | |
} | |
if (fromObject instanceof Collection<?>) { | |
return new StructuredSelection(((Collection<?>) fromObject) | |
.toArray()); | |
} else if (fromObject.getClass().isArray()) { | |
return new StructuredSelection((Object[]) fromObject); | |
} | |
return new StructuredSelection(fromObject); | |
} | |
/* | |
* (non-Javadoc) | |
* | |
* @see org.eclipse.core.databinding.conversion.IConverter#getFromType() | |
*/ | |
public Object getFromType() { | |
return Object.class; | |
} | |
/* | |
* (non-Javadoc) | |
* | |
* @see org.eclipse.core.databinding.conversion.IConverter#getToType() | |
*/ | |
public Object getToType() { | |
return ISelection.class; | |
} | |
} |