/****************************************************************************
* 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.presence.roster;
/**
* Roster update listener
*
* <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 IRosterListener {
/**
* Notification that a roster entry has been added
*
* @param entry
* the roster entry that has changed
*/
public void handleRosterEntryAdd(IRosterEntry entry);
/**
* Handle roster update notification.
*
* @param roster
* the roster updated. Will not be <code>null</code>.
* @param changedValue
* the roster item that changed
*/
public void handleRosterUpdate(IRoster roster, IRosterItem changedValue);
/**
* Notification that a roster entry has been renived
*
* @param entry
* the entry that has been removed
*/
public void handleRosterEntryRemove(IRosterEntry entry);
}