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/*******************************************************************************
* Copyright (c) 2006, 2008 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.debug.ui.contexts;
import java.util.EventObject;
import org.eclipse.jface.viewers.ISelection;
/**
* A debug context event. Debug context events are generated by debug context
* providers. A debug context is represented by a selection and flags
* (bit mask) describing how the context has changed.
* <p>
* Clients may instantiate this class.
* </p>
* @see IDebugContextListener
* @see IDebugContextProvider
* @since 3.3
* @noextend This class is not intended to be subclassed by clients.
*/
public class DebugContextEvent extends EventObject {
/**
* The context
*/
private ISelection fContext;
/**
* Change flags.
*/
private int fFlags;
/**
* Change constant (bit mask) indicating a context has been activated.
*/
public static final int ACTIVATED = 0x01;
/**
* Change constant (bit mask) indicating the state of a context has changed.
* State changes are only broadcast for previously activated contexts.
*/
public static final int STATE = 0x10;
/**
* Generated serial version UID for this class.
*/
private static final long serialVersionUID = 3395172504615255524L;
/**
* Constructs a new debug context event.
*
* @param source source of the event - a debug context provider
* @param context the relevant context
* @param flags bit mask indicating how the context has changed - see change constants
* defined in this class
*/
public DebugContextEvent(IDebugContextProvider source, ISelection context, int flags) {
super(source);
fContext = context;
fFlags = flags;
}
/**
* Returns the debug context associated with this event.
*
* @return debug context, possible an empty selection
*/
public ISelection getContext() {
return fContext;
}
/**
* Returns flags which describe in more detail how a context has changed.
* See change constants defined in this class.
*
* @return event flags
*/
public int getFlags() {
return fFlags;
}
/**
* Returns the context provider that initiated this event.
*
* @return context provider
*/
public IDebugContextProvider getDebugContextProvider() {
return (IDebugContextProvider) getSource();
}
}
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