/*******************************************************************************
* Copyright (c) 2006, 2015 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
* Alexander Kurtakov <akurtako@redhat.com> - Bug 459343
*******************************************************************************/
package org.eclipse.core.tests.internal.mapping;
import java.util.ArrayList;
import java.util.List;
import org.eclipse.core.resources.*;
import org.eclipse.core.resources.mapping.ModelStatus;
import org.eclipse.core.runtime.*;
import org.eclipse.osgi.util.NLS;
/**
* A description of the changes found in a delta
*/
public class ChangeDescription {
public static final String ADDED = "Added {0}";
public static final String CHANGED = "Changed {0}";
public static final String CLOSED = "Closed {0}";
public static final String COPIED = "Copied {0}";
public static final String MOVED = "Moved {0}";
public static final String REMOVED = "Removed {0}";
private List<IResource> addedRoots = new ArrayList<>();
private List<IResource> changedRoots = new ArrayList<>();
private List<IResource> closedProjects = new ArrayList<>();
private List<IResource> copiedRoots = new ArrayList<>();
private List<Status> errors = new ArrayList<>();
private List<IResource> movedRoots = new ArrayList<>();
private List<IResource> removedRoots = new ArrayList<>();
public static String getMessageFor(String messageTemplate, IResource resource) {
return NLS.bind(messageTemplate, resource.getFullPath().toString());
}
private void accumulateStatus(IResource[] resources, List<ModelStatus> result, String message) {
for (IResource resource : resources) {
result.add(new ModelStatus(IStatus.WARNING, "org.eclipse.core.tests.resources", TestModelProvider.ID, getMessageFor(message, resource)));
}
}
public void addError(CoreException e) {
errors.add(new Status(IStatus.ERROR, "org.eclipse.core.tests.resources", 0, "An error occurred", e));
}
public IStatus asStatus() {
if (errors.isEmpty()) {
List<ModelStatus> result = new ArrayList<>();
accumulateStatus(addedRoots.toArray(new IResource[addedRoots.size()]), result, ADDED);
accumulateStatus(removedRoots.toArray(new IResource[removedRoots.size()]), result, REMOVED);
accumulateStatus(movedRoots.toArray(new IResource[movedRoots.size()]), result, MOVED);
accumulateStatus(copiedRoots.toArray(new IResource[copiedRoots.size()]), result, COPIED);
accumulateStatus(changedRoots.toArray(new IResource[changedRoots.size()]), result, CHANGED);
accumulateStatus(closedProjects.toArray(new IResource[closedProjects.size()]), result, CLOSED);
if (!result.isEmpty()) {
if (result.size() == 1) {
return result.get(0);
}
return new MultiStatus("org.eclipse.core.tests.resources", 0, result.toArray(new IStatus[result.size()]), "Changes were validated", null);
}
return Status.OK_STATUS;
} else if (errors.size() == 1) {
return errors.get(0);
}
return new MultiStatus("org.eclipse.core.tests.resources", 0, errors.toArray(new IStatus[errors.size()]), "Errors occurred", null);
}
private IResource createSourceResource(IResourceDelta delta) {
IPath sourcePath = delta.getMovedFromPath();
IResource resource = delta.getResource();
IWorkspaceRoot wsRoot = ResourcesPlugin.getWorkspace().getRoot();
switch (resource.getType()) {
case IResource.PROJECT :
return wsRoot.getProject(sourcePath.segment(0));
case IResource.FOLDER :
return wsRoot.getFolder(sourcePath);
case IResource.FILE :
return wsRoot.getFile(sourcePath);
}
return null;
}
private void ensureResourceCovered(IResource resource, List<IResource> list) {
IPath path = resource.getFullPath();
for (IResource root : list) {
if (root.getFullPath().isPrefixOf(path)) {
return;
}
}
list.add(resource);
}
private void handleAdded(IResourceDelta delta) {
if ((delta.getFlags() & IResourceDelta.MOVED_FROM) != 0) {
handleMove(delta);
} else if ((delta.getFlags() & IResourceDelta.COPIED_FROM) != 0) {
handleCopy(delta);
} else {
ensureResourceCovered(delta.getResource(), addedRoots);
}
}
private void handleChange(IResourceDelta delta) {
if ((delta.getFlags() & IResourceDelta.REPLACED) != 0) {
// A replace was added in place of a removed resource
handleAdded(delta);
} else if (delta.getResource().getType() == IResource.FILE) {
ensureResourceCovered(delta.getResource(), changedRoots);
}
}
private void handleCopy(IResourceDelta delta) {
if ((delta.getFlags() & IResourceDelta.COPIED_FROM) != 0) {
IResource source = createSourceResource(delta);
ensureResourceCovered(source, copiedRoots);
}
}
private void handleMove(IResourceDelta delta) {
if ((delta.getFlags() & IResourceDelta.MOVED_TO) != 0) {
ensureResourceCovered(delta.getResource(), movedRoots);
} else if ((delta.getFlags() & IResourceDelta.MOVED_FROM) != 0) {
IResource source = createSourceResource(delta);
ensureResourceCovered(source, movedRoots);
}
}
private void handleRemoved(IResourceDelta delta) {
if ((delta.getFlags() & IResourceDelta.OPEN) != 0) {
closedProjects.add(delta.getResource());
} else if ((delta.getFlags() & IResourceDelta.MOVED_TO) != 0) {
handleMove(delta);
} else {
ensureResourceCovered(delta.getResource(), removedRoots);
}
}
/**
* Record the change and return whether any child changes should be visited.
* @param delta the change
* @return whether any child changes should be visited
*/
public boolean recordChange(IResourceDelta delta) {
switch (delta.getKind()) {
case IResourceDelta.ADDED :
handleAdded(delta);
return true; // Need to traverse children to look for moves or other changes under added roots
case IResourceDelta.REMOVED :
handleRemoved(delta);
// No need to look for further changes under a remove (such as moves).
// Changes will be discovered in corresponding destination delta
return false;
case IResourceDelta.CHANGED :
handleChange(delta);
return true;
}
return true;
}
}