HelloMessageSharedObject.java

/****************************************************************************
 * 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.example.collab.share;

import java.util.HashMap;
import java.util.Map;

import org.eclipse.ecf.core.identity.ID;
import org.eclipse.ecf.core.sharedobject.ISharedObjectConfig;
import org.eclipse.ecf.core.sharedobject.ReplicaSharedObjectDescription;
import org.eclipse.ecf.core.sharedobject.SharedObjectInitException;
import org.eclipse.jface.dialogs.MessageDialog;
import org.eclipse.osgi.util.NLS;
import org.eclipse.swt.widgets.Display;

public class HelloMessageSharedObject extends GenericSharedObject {
	private String message;
	private String sender;

	public HelloMessageSharedObject() {
		sender = "<unknown>"; //$NON-NLS-1$
		message = " says hello"; //$NON-NLS-1$
	}

	public HelloMessageSharedObject(String message, String sender) {
		this.message = message;
		this.sender = sender;
	}

	public void init(ISharedObjectConfig soconfig)
			throws SharedObjectInitException {
		super.init(soconfig);
		Map aMap = soconfig.getProperties();
		Object[] args = (Object[]) aMap.get(ARGS_PROPERTY_NAME);
		if (args != null && args.length == 2) {
			this.message = (String) args[0];
			this.sender = (String) args[1];
		}
	}

	public void activated(ID[] others) {
		// Note: be sure to call super.activated first so
		// replication gets done
		super.activated(others);
		showMessage();
	}

	protected ReplicaSharedObjectDescription getReplicaDescription(ID remoteID) {
		Object[] remoteArgs = { message, sender };
		HashMap map = new HashMap();
		map.put(ARGS_PROPERTY_NAME, remoteArgs);
		return new ReplicaSharedObjectDescription(getClass(), getID(),
				getConfig().getHomeContainerID(), map, getNextReplicateID());
	}

	protected void showMessage() {
		try {
			if (!getContext().isGroupManager()) {
				Display.getDefault().asyncExec(new Runnable() {
					public void run() {
						Display.getDefault().beep();
						MessageDialog.openInformation(null, NLS.bind(
								"Message from ", sender), NLS.bind( //$NON-NLS-1$
								"{0} says {1}", sender, message)); //$NON-NLS-1$
					}
				});
			}
		} catch (Exception e) {
			log("Exception showing message dialog ", e); //$NON-NLS-1$
		}
		destroySelf();
	}
}