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/*******************************************************************************
* Copyright (c) 2013 OPCoach.
* 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:
* OPCoach - initial API and implementation
*******************************************************************************/
package org.eclipse.e4.internal.tools.context.spy;
import java.lang.reflect.Field;
import java.util.Collection;
import java.util.Collections;
import java.util.Map;
import org.eclipse.e4.core.contexts.EclipseContextFactory;
import org.eclipse.e4.core.contexts.IEclipseContext;
import org.osgi.framework.BundleContext;
/**
* A helper class to get information inside context management system. This
* class uses internal fields or methods defined in EclipseContext Could be
* updated in the future.
*
* @author olivier
*
*/
public class ContextSpyHelper {
/**
* Get all the contexts created by EclipseContextFactory. It get values from
* field introspection. Should be rewritten if internal structure changes
*
* @return a collection of contexts created by EclipseContextFactory
*/
public static Collection<IEclipseContext> getAllBundleContexts() {
Collection<IEclipseContext> result = Collections.emptyList();
try {
// Must use introspection to get the weak hash map (no getter).
Field f = EclipseContextFactory.class.getDeclaredField("serviceContexts");
f.setAccessible(true);
@SuppressWarnings("unchecked")
Map<BundleContext, IEclipseContext> ctxs = (Map<BundleContext, IEclipseContext>) f.get(null);
result = ctxs.values();
} catch (SecurityException e) {
e.printStackTrace();
} catch (NoSuchFieldException e) {
e.printStackTrace();
} catch (IllegalArgumentException e) {
e.printStackTrace();
} catch (IllegalAccessException e) {
e.printStackTrace();
}
return result;
}
}
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