| /******************************************************************************* |
| * Copyright (c) 2005, 2006 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.ltk.core.refactoring.model; |
| |
| import java.util.HashSet; |
| import java.util.Set; |
| |
| import org.eclipse.core.runtime.Assert; |
| import org.eclipse.core.runtime.CoreException; |
| import org.eclipse.core.runtime.IProgressMonitor; |
| |
| import org.eclipse.core.resources.IProject; |
| import org.eclipse.core.resources.IResource; |
| import org.eclipse.core.resources.IWorkspaceRoot; |
| import org.eclipse.core.resources.ResourcesPlugin; |
| import org.eclipse.core.resources.mapping.ModelProvider; |
| import org.eclipse.core.resources.mapping.ResourceMapping; |
| import org.eclipse.core.resources.mapping.ResourceMappingContext; |
| import org.eclipse.core.resources.mapping.ResourceTraversal; |
| |
| import org.eclipse.ltk.core.refactoring.RefactoringDescriptorProxy; |
| import org.eclipse.ltk.core.refactoring.history.RefactoringHistory; |
| |
| import org.eclipse.ltk.internal.core.refactoring.RefactoringCorePlugin; |
| import org.eclipse.ltk.internal.core.refactoring.history.RefactoringHistoryService; |
| |
| /** |
| * Partial implementation of a resource mapping for a refactoring history |
| * object. |
| * <p> |
| * Note: this class is intended to be implemented by clients which need to |
| * enhance a model provider with a refactoring model. |
| * </p> |
| * |
| * @see ResourceMapping |
| * @see ModelProvider |
| * |
| * @since 3.2 |
| */ |
| public abstract class AbstractRefactoringHistoryResourceMapping extends ResourceMapping { |
| |
| /** The refactoring history */ |
| private final RefactoringHistory fRefactoringHistory; |
| |
| /** The resource traversals */ |
| private ResourceTraversal[] fResourceTraversals= null; |
| |
| /** |
| * Creates a new abstract refactoring history resource mapping. |
| * |
| * @param history |
| * the refactoring history |
| */ |
| protected AbstractRefactoringHistoryResourceMapping(final RefactoringHistory history) { |
| Assert.isNotNull(history); |
| fRefactoringHistory= history; |
| } |
| |
| /** |
| * {@inheritDoc} |
| */ |
| public boolean equals(final Object object) { |
| if (object instanceof AbstractRefactoringHistoryResourceMapping) { |
| final AbstractRefactoringHistoryResourceMapping mapping= (AbstractRefactoringHistoryResourceMapping) object; |
| return mapping.fRefactoringHistory.equals(fRefactoringHistory); |
| } |
| return false; |
| } |
| |
| /** |
| * {@inheritDoc} |
| */ |
| public final Object getModelObject() { |
| return fRefactoringHistory; |
| } |
| |
| /** |
| * {@inheritDoc} |
| */ |
| public final IProject[] getProjects() { |
| final Set set= new HashSet(); |
| final IWorkspaceRoot root= ResourcesPlugin.getWorkspace().getRoot(); |
| final RefactoringDescriptorProxy[] proxies= fRefactoringHistory.getDescriptors(); |
| for (int index= 0; index < proxies.length; index++) { |
| final String name= proxies[index].getProject(); |
| if (name != null && !"".equals(name)) //$NON-NLS-1$ |
| set.add(root.getProject(name)); |
| } |
| return (IProject[]) set.toArray(new IProject[set.size()]); |
| } |
| |
| /** |
| * Returns the associated resource. |
| * <p> |
| * This method only returns a meaningful result if the history contains |
| * refactorings of a single project. |
| * </p> |
| * |
| * @return the associated resource, or <code>null</code> if the |
| * refactoring history contains workspace refactoring descriptors |
| * only, or if it contains refactoring descriptors from multiple |
| * projects. |
| */ |
| public final IResource getResource() { |
| try { |
| final ResourceTraversal[] traversals= getTraversals(null, null); |
| if (traversals.length > 0) { |
| final IResource[] resources= traversals[0].getResources(); |
| if (resources.length > 0) |
| return resources[0]; |
| } |
| } catch (CoreException exception) { |
| RefactoringCorePlugin.log(exception); |
| } |
| return null; |
| } |
| |
| /** |
| * {@inheritDoc} |
| */ |
| public final ResourceTraversal[] getTraversals(final ResourceMappingContext context, final IProgressMonitor monitor) throws CoreException { |
| if (fResourceTraversals == null) { |
| final IProject[] projects= getProjects(); |
| final ResourceTraversal[] traversals= new ResourceTraversal[projects.length]; |
| for (int index= 0; index < projects.length; index++) |
| traversals[index]= new ResourceTraversal(new IResource[] { projects[index].getFolder(RefactoringHistoryService.NAME_HISTORY_FOLDER)}, IResource.DEPTH_INFINITE, IResource.NONE); |
| fResourceTraversals= traversals; |
| } |
| final ResourceTraversal[] traversals= new ResourceTraversal[fResourceTraversals.length]; |
| System.arraycopy(fResourceTraversals, 0, traversals, 0, fResourceTraversals.length); |
| return traversals; |
| } |
| |
| /** |
| * {@inheritDoc} |
| */ |
| public int hashCode() { |
| return fRefactoringHistory.hashCode(); |
| } |
| } |