/*******************************************************************************
* Copyright (c) 2009, 2015 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.ui.internal.services;
import java.util.HashSet;
import java.util.LinkedList;
import java.util.Set;
import org.eclipse.e4.core.contexts.ContextFunction;
import org.eclipse.e4.core.contexts.IEclipseContext;
public class ActiveContextsFunction extends ContextFunction {
@Override
public Object compute(IEclipseContext context, String contextKey) {
// 1) get active child
IEclipseContext current = context.getActiveLeaf();
//2 form an answer going up
boolean inDialog = false;
Set<Object> rc = new HashSet<>();
while (current != null) {
LinkedList<?> locals = (LinkedList<?>) current.getLocal(ContextContextService.LOCAL_CONTEXTS);
if (locals != null) {
if (!inDialog || !locals.contains("org.eclipse.ui.contexts.window")) {
rc.addAll(locals);
}
if (!inDialog && locals.contains("org.eclipse.ui.contexts.dialog")) {
inDialog = true;
}
}
current = current.getParent();
}
return rc;
}
}