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/*******************************************************************************
* Copyright (c) 2011 Wind River Systems, Inc. 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:
* Wind River Systems - initial API and implementation
*******************************************************************************/
package org.eclipse.tcf.te.runtime.interfaces.callback;
import javax.security.auth.callback.Callback;
import org.eclipse.core.runtime.IStatus;
import org.eclipse.tcf.te.runtime.interfaces.properties.IPropertiesContainer;
/**
* Generic callback interface for asynchronous calls.
*
* @noimplement Not intended to be implemented by clients, use {@link Callback} as base implementation instead.
* @noextend
*/
public interface ICallback extends IPropertiesContainer {
/**
* Returns if or if not the callbacks <code>done</code> method
* was called already.
*
* @return <code>True</code> if {@link #done(Object, IStatus)} was called already, <code>false</code> otherwise.
*/
public boolean isDone();
/**
* Callback method invoked when a request is completed.
*
* @param caller
* The caller or <code>null</code>.
* @param status
* The status. Must not be <code>null</code>.
*/
public void done(Object caller, IStatus status);
/**
* Add an additional parent callback to the end of the parent callback list.
*
* @param callback
* The parent callback. Must not be <code>null</code>.
*/
public void addParentCallback(ICallback callback);
/**
* Sets the result of an asynchronous operation to be carried by
* the callback object.
*
* @param result The result object or <code>null</code>.
*/
public void setResult(Object result);
/**
* Gets the result of an asynchronous operation which is carried by
* the callback object.
*
* @return The result object or <code>null</code>.
*/
public Object getResult();
}
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