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/*******************************************************************************
* Copyright (c) 2006, 2016 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 org.eclipse.core.runtime.ISafeRunnable;
import org.eclipse.core.runtime.ListenerList;
import org.eclipse.core.runtime.SafeRunner;
import org.eclipse.debug.internal.ui.DebugUIPlugin;
import org.eclipse.ui.IWorkbenchPart;
/**
* Abstract implementation of a debug context provider.
* <p>
* Clients implementing context providers should subclass this class.
* </p>
* @since 3.3
*/
public abstract class AbstractDebugContextProvider implements IDebugContextProvider {
/**
* Event listeners
*/
private ListenerList<IDebugContextListener> fListeners = new ListenerList<>();
/**
* Part or <code>null</code>
*/
private IWorkbenchPart fPart;
/**
* Constructs a context provider for the specified part, possibly <code>null</code>.
*
* @param part workbench part or <code>null</code>
*/
public AbstractDebugContextProvider(IWorkbenchPart part) {
fPart = part;
}
/* (non-Javadoc)
* @see org.eclipse.debug.internal.ui.contexts.provisional.IDebugContextProvider#addDebugContextEventListener(org.eclipse.debug.internal.ui.contexts.provisional.IDebugContextEventListener)
*/
@Override
public void addDebugContextListener(IDebugContextListener listener) {
fListeners.add(listener);
}
/* (non-Javadoc)
* @see org.eclipse.debug.internal.ui.contexts.provisional.IDebugContextProvider#getPart()
*/
@Override
public IWorkbenchPart getPart() {
return fPart;
}
/* (non-Javadoc)
* @see org.eclipse.debug.internal.ui.contexts.provisional.IDebugContextProvider#removeDebugContextEventListener(org.eclipse.debug.internal.ui.contexts.provisional.IDebugContextEventListener)
*/
@Override
public void removeDebugContextListener(IDebugContextListener listener) {
fListeners.remove(listener);
}
/**
* Fires the given context event to all registered listeners.
*
* @param event debug context event
*/
protected void fire(final DebugContextEvent event) {
for (IDebugContextListener iDebugContextListener : fListeners) {
final IDebugContextListener listener = iDebugContextListener;
SafeRunner.run(new ISafeRunnable() {
@Override
public void run() throws Exception {
listener.debugContextChanged(event);
}
@Override
public void handleException(Throwable exception) {
DebugUIPlugin.log(exception);
}
});
}
}
}
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