Disconnect.java

/** 
 * This file is protected by Copyright. 
 * Please refer to the COPYRIGHT file distributed with this source distribution.
 * 
 * This file is part of REDHAWK IDE.
 * 
 * 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.
 *
 */
package gov.redhawk.ui.views.namebrowser.internal.command;

import gov.redhawk.ui.views.namebrowser.view.BindingNode;
import gov.redhawk.ui.views.namebrowser.view.NameBrowserView;

import org.eclipse.core.commands.AbstractHandler;
import org.eclipse.core.commands.ExecutionEvent;
import org.eclipse.core.commands.ExecutionException;
import org.eclipse.core.commands.IHandler;
import org.eclipse.core.runtime.IProgressMonitor;
import org.eclipse.core.runtime.IStatus;
import org.eclipse.core.runtime.Status;
import org.eclipse.core.runtime.jobs.Job;
import org.eclipse.jface.viewers.ISelection;
import org.eclipse.jface.viewers.IStructuredSelection;
import org.eclipse.ui.IWorkbenchPage;
import org.eclipse.ui.PlatformUI;
import org.eclipse.ui.handlers.HandlerUtil;

/**
 * This class serves as the handler to disconnect from a NameServer.
 */
public class Disconnect extends AbstractHandler implements IHandler {

	@Override
	public Object execute(final ExecutionEvent event) throws ExecutionException {
		final ISelection selection = HandlerUtil.getCurrentSelection(event);

		if (selection instanceof IStructuredSelection) {
			final IStructuredSelection sel = (IStructuredSelection) selection;
			for (final Object selected : sel.toList()) {
				if (selected instanceof BindingNode && ((BindingNode) selected).getParent() == null) {
					final IWorkbenchPage page = PlatformUI.getWorkbench().getActiveWorkbenchWindow().getActivePage();
					if (page != null) {
						final NameBrowserView view = (NameBrowserView) page.findView(NameBrowserView.ID);
						if (view != null) {
							final Job job = new Job("Disconnecting from Host") {
								@Override
								public IStatus run(final IProgressMonitor monitor) {
									monitor.beginTask("Disconnecting from Host", IProgressMonitor.UNKNOWN);
									view.disconnect((BindingNode) selected);
									return Status.OK_STATUS;
								}
							};
							job.schedule();
						}
					}
				}
			}
		}

		return null;
	}

}