| /******************************************************************************* |
| * Copyright (c) 2000, 2004 IBM Corporation 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: |
| * IBM Corporation - initial API and implementation |
| *******************************************************************************/ |
| package org.eclipse.team.examples.pessimistic; |
| |
| import java.util.*; |
| |
| import org.eclipse.core.resources.IResource; |
| import org.eclipse.jface.viewers.ITreeContentProvider; |
| import org.eclipse.jface.viewers.Viewer; |
| |
| public class ResourceSetContentProvider implements ITreeContentProvider { |
| private static final Object[] EMPTY_ARRAY= new Object[0]; |
| private Map fResourceTree; |
| private IResource[] fRoots; |
| |
| public ResourceSetContentProvider(Set resources) { |
| fResourceTree= new HashMap(1); |
| Set roots= new HashSet(resources); |
| for(Iterator i= resources.iterator(); i.hasNext(); ) { |
| IResource resource= (IResource)i.next(); |
| if(resource.getType() == IResource.ROOT) { |
| continue; // root cannot be displayed |
| } |
| IResource parent= resource.getParent(); |
| if (roots.contains(parent)) { |
| roots.remove(resource); |
| Set set= (Set)fResourceTree.get(parent); |
| if (set == null) { |
| set= new HashSet(1); |
| fResourceTree.put(parent, set); |
| } |
| set.add(resource); |
| } |
| } |
| fRoots= (IResource[])roots.toArray(new IResource[roots.size()]); |
| } |
| |
| public Object[] getChildren(Object parentElement) { |
| Set set= (Set) fResourceTree.get(parentElement); |
| if (set != null) { |
| return set.toArray(); |
| } |
| return EMPTY_ARRAY; |
| } |
| |
| public Object getParent(Object element) { |
| if (element instanceof IResource) { |
| return ((IResource)element).getParent(); |
| } |
| return null; |
| } |
| |
| public boolean hasChildren(Object element) { |
| return fResourceTree.get(element) != null; |
| } |
| |
| public Object[] getElements(Object inputElement) { |
| return fRoots; |
| } |
| |
| public void dispose() { |
| fResourceTree= null; |
| } |
| |
| public void inputChanged(Viewer viewer, Object oldInput, Object newInput) { |
| } |
| |
| } |