/*******************************************************************************
* Copyright (c) 2005, 2012 IBM Corporation 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:
* IBM Corporation - initial API and implementation
*******************************************************************************/
package org.eclipse.jdt.internal.debug.ui.jres;
import org.eclipse.jdt.launching.IVMInstall;
import org.eclipse.jdt.launching.environments.IExecutionEnvironment;
import org.eclipse.jface.viewers.Viewer;
import org.eclipse.jface.viewers.ViewerComparator;
/**
* Sorts execution environments.
*
* @since 3.3
*/
public class JREsEnvironmentComparator extends ViewerComparator {
IExecutionEnvironment fEnvironment;
/* (non-Javadoc)
* @see org.eclipse.jface.viewers.ViewerSorter#category(java.lang.Object)
*/
@Override
public int category(Object element) {
if (fEnvironment == null) {
return super.category(element);
}
if (fEnvironment.isStrictlyCompatible((IVMInstall) element)) {
return 0;
}
return 1;
}
/* (non-Javadoc)
* @see org.eclipse.jface.viewers.ViewerSorter#compare(org.eclipse.jface.viewers.Viewer, java.lang.Object, java.lang.Object)
*/
@Override
public int compare(Viewer viewer, Object e1, Object e2) {
fEnvironment = (IExecutionEnvironment) viewer.getInput();
int result = super.compare(viewer, e1, e2);
fEnvironment = null;
return result;
}
}