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/*******************************************************************************
* Copyright (c) 2004 Composent, 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: Composent, Inc. - initial API and implementation
******************************************************************************/
package org.eclipse.ecf.discovery;
/**
* Listener for receiving service events
*
* <p>
* </p>
* Note these methods will be called asynchronously when notifications of remote
* changes are received by the provider implementation code. The provider is
* free to call the methods below with an arbitrary thread, so the
* implementation of these methods must be appropriately prepared.
* <p>
* </p>
* For example, if the code implementing any of these methods must interact with
* user interface code, then it should use code such as the following to execute
* on the SWT UI thread:
*
* <pre>
* Display.getDefault().asyncExec(new Runnable() {
* public void run() {
* ... UI code here
* }
* });
* </pre>
*
* Further, the code in the implementations of these methods should <b>not block</b>
* via I/O operations or blocking UI calls.
*/
public interface IServiceListener {
/**
* Notification that a service has been discovered (the service is fully resolved).
*
* @param anEvent Will not be <code>null</code>
*/
public void serviceDiscovered(IServiceEvent anEvent);
/**
* Notification that a previously discovered service has been undiscovered.
*
* @param anEvent Will not be <code>null</code>
*/
public void serviceUndiscovered(IServiceEvent anEvent);
}
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