org.eclipse.fmc.mm.editor/src/org/eclipse/fmc/mm/navigator/ProjectAdapterFactoryContentProvider.java

/*******************************************************************************
 * <copyright>
 *
 * Copyright (c) 2013, 2013 SAP AG.
 * 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:
 *    SAP AG - initial API, implementation and documentation
 *
 * </copyright>
 *
 *******************************************************************************/
package org.eclipse.fmc.mm.navigator;

import org.eclipse.core.resources.IFile;
import org.eclipse.core.resources.IResource;
import org.eclipse.core.resources.IResourceChangeEvent;
import org.eclipse.core.resources.IResourceChangeListener;
import org.eclipse.core.resources.IResourceDelta;
import org.eclipse.core.resources.IResourceDeltaVisitor;
import org.eclipse.core.resources.ResourcesPlugin;
import org.eclipse.core.runtime.CoreException;
import org.eclipse.emf.common.notify.Notification;
import org.eclipse.emf.common.notify.impl.NotificationImpl;
import org.eclipse.emf.common.util.URI;
import org.eclipse.emf.ecore.resource.Resource;
import org.eclipse.emf.ecore.resource.ResourceSet;
import org.eclipse.emf.ecore.resource.impl.ResourceSetImpl;
import org.eclipse.emf.edit.provider.ViewerNotification;
import org.eclipse.emf.edit.ui.provider.AdapterFactoryContentProvider;

public class ProjectAdapterFactoryContentProvider extends
		AdapterFactoryContentProvider implements IResourceChangeListener,
		IResourceDeltaVisitor {

	private static ResourceSet resourceSet = new ResourceSetImpl();;

	public ProjectAdapterFactoryContentProvider() {
		super(ProjectAdapterFactoryProvider.getAdapterFactory());
		ResourcesPlugin.getWorkspace().addResourceChangeListener(this,
				IResourceChangeEvent.POST_CHANGE);
	}

	public boolean hasChildren(Object object) {
		if (object instanceof IFile)
			return true;
		return super.hasChildren(object);
	}

	public Object[] getChildren(Object object) {
		if (object instanceof IFile) {
			String path = ((IFile) object).getFullPath().toString();
			URI uri = URI.createPlatformResourceURI(path, true);
			object = resourceSet.getResource(uri, false);
		}
		return super.getChildren(object);
	}
	
	public Object[] getElements(Object object) {
		if (object instanceof IFile) {
			String path = ((IFile) object).getFullPath().toString();
			URI uri = URI.createPlatformResourceURI(path, false);
			object = resourceSet.getResource(uri, true);
		}
		return super.getElements(object);
	}

	public Object getParent(Object object) {
		if (object instanceof IFile)
			return ((IResource) object).getParent();
		return super.getParent(object);
	}

	

	@Override
	public void resourceChanged(IResourceChangeEvent event) {
		IResourceDelta delta = event.getDelta();
		try {
			delta.accept(this);
		} catch (CoreException e) {
			e.printStackTrace();
		}
	}

	@Override
	public boolean visit(IResourceDelta delta) throws CoreException {
		try {
			IResource changedResource = delta.getResource();
			if ((changedResource.getType() == IResource.FILE)
					&& ("block".equals(changedResource.getFileExtension()))) {
				String path = ((IFile) changedResource).getFullPath()
						.toString();
				URI uri = URI.createPlatformResourceURI(path, true);
				Resource res = resourceSet.getResource(uri, true);
				res.unload();
				res.load(resourceSet.getLoadOptions());
				notifyChanged(new ViewerNotification(new NotificationImpl(
						Notification.SET, "", "Refresh")));
			}
			return true;
		} catch (Exception e) {
			e.printStackTrace();
			return false;
		}
	}

	@Override
	public void dispose() {
		ResourcesPlugin.getWorkspace().removeResourceChangeListener(this);
		super.dispose();
	}

}