| /******************************************************************************* |
| * Copyright (c) 2000, 2017 IBM Corporation and others. |
| * |
| * This program and the accompanying materials |
| * are made available under the terms of the Eclipse Public License 2.0 |
| * which accompanies this distribution, and is available at |
| * https://www.eclipse.org/legal/epl-2.0/ |
| * |
| * SPDX-License-Identifier: EPL-2.0 |
| * |
| * Contributors: |
| * IBM Corporation - initial API and implementation |
| *******************************************************************************/ |
| package org.eclipse.team.internal.core.subscribers; |
| |
| import java.util.ArrayList; |
| import java.util.Iterator; |
| import java.util.List; |
| |
| import org.eclipse.core.resources.IResource; |
| import org.eclipse.core.resources.mapping.ResourceMapping; |
| import org.eclipse.core.resources.mapping.ResourceTraversal; |
| import org.eclipse.core.runtime.IPath; |
| import org.eclipse.core.runtime.ISafeRunnable; |
| import org.eclipse.core.runtime.ListenerList; |
| import org.eclipse.core.runtime.SafeRunner; |
| import org.eclipse.team.core.mapping.ISynchronizationScope; |
| import org.eclipse.team.core.mapping.ISynchronizationScopeChangeListener; |
| |
| /** |
| * An abstract implementation of an {@link ISynchronizationScope}. |
| * |
| * @since 3.2 |
| */ |
| public abstract class AbstractSynchronizationScope implements ISynchronizationScope { |
| |
| private ListenerList<ISynchronizationScopeChangeListener> listeners = new ListenerList<>(ListenerList.IDENTITY); |
| |
| @Override |
| public IResource[] getRoots() { |
| List<IResource> result = new ArrayList<>(); |
| ResourceTraversal[] traversals = getTraversals(); |
| for (int i = 0; i < traversals.length; i++) { |
| ResourceTraversal traversal = traversals[i]; |
| IResource[] resources = traversal.getResources(); |
| for (int j = 0; j < resources.length; j++) { |
| IResource resource = resources[j]; |
| accumulateRoots(result, resource); |
| } |
| } |
| return result.toArray(new IResource[result.size()]); |
| } |
| |
| @Override |
| public boolean contains(IResource resource) { |
| ResourceTraversal[] traversals = getTraversals(); |
| for (int i = 0; i < traversals.length; i++) { |
| ResourceTraversal traversal = traversals[i]; |
| if (traversal.contains(resource)) |
| return true; |
| } |
| return false; |
| } |
| |
| /* |
| * Add the resource to the list if it isn't there already |
| * or is not a child of an existing resource. |
| */ |
| private void accumulateRoots(List<IResource> roots, IResource resource) { |
| IPath resourcePath = resource.getFullPath(); |
| for (Iterator iter = roots.iterator(); iter.hasNext();) { |
| IResource root = (IResource) iter.next(); |
| IPath rootPath = root.getFullPath(); |
| // If there is a higher resource in the collection, skip this one |
| if (rootPath.isPrefixOf(resourcePath)) |
| return; |
| // If there are lower resources, remove them |
| if (resourcePath.isPrefixOf(rootPath)) |
| iter.remove(); |
| } |
| // There were no higher resources, so add this one |
| roots.add(resource); |
| } |
| |
| /** |
| * Fire the scope change event |
| * @param newTraversals the new traversals (may be empty) |
| * @param newMappings the new mappings (may be empty) |
| */ |
| public void fireTraversalsChangedEvent(final ResourceTraversal[] newTraversals, final ResourceMapping[] newMappings) { |
| Object[] allListeners = listeners.getListeners(); |
| for (int i = 0; i < allListeners.length; i++) { |
| final Object listener = allListeners[i]; |
| SafeRunner.run(new ISafeRunnable() { |
| @Override |
| public void run() throws Exception { |
| ((ISynchronizationScopeChangeListener)listener).scopeChanged(AbstractSynchronizationScope.this, newMappings, newTraversals); |
| } |
| @Override |
| public void handleException(Throwable exception) { |
| // Logged by Platform |
| } |
| }); |
| } |
| } |
| |
| @Override |
| public void addScopeChangeListener(ISynchronizationScopeChangeListener listener) { |
| listeners.add(listener); |
| } |
| |
| @Override |
| public void removeScopeChangeListener(ISynchronizationScopeChangeListener listener) { |
| listeners.remove(listener); |
| } |
| |
| } |