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/*******************************************************************************
* Copyright (c) 2009 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.e4.workbench.ui.internal;
import org.eclipse.e4.core.services.context.IEclipseContext;
import org.eclipse.e4.core.services.context.spi.ContextFunction;
import org.eclipse.e4.core.services.context.spi.IContextConstants;
/**
*
*/
public class SelectionLookupFunction extends ContextFunction {
/*
* (non-Javadoc)
*
* @see
* org.eclipse.e4.core.services.context.spi.ContextFunction#compute(org.eclipse.e4.core.services
* .context.IEclipseContext, java.lang.Object[])
*/
@Override
public Object compute(IEclipseContext context, Object[] arguments) {
IEclipseContext leafContext = context;
IEclipseContext child = (IEclipseContext) leafContext
.getLocal(IContextConstants.ACTIVE_CHILD);
while (child != null) {
leafContext = child;
child = (IEclipseContext) leafContext.getLocal(IContextConstants.ACTIVE_CHILD);
}
return leafContext.get(SelectionServiceImpl.OUT_SELECTION);
}
}