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/*******************************************************************************
* Copyright (c) 2006, 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.ui.mapping;
import java.util.HashSet;
import java.util.Set;
import org.eclipse.core.resources.*;
import org.eclipse.core.resources.mapping.RemoteResourceMappingContext;
import org.eclipse.core.resources.mapping.ResourceTraversal;
import org.eclipse.core.runtime.*;
import org.eclipse.team.core.diff.IDiff;
import org.eclipse.team.core.diff.IThreeWayDiff;
import org.eclipse.team.core.mapping.IResourceDiff;
import org.eclipse.team.core.mapping.ISynchronizationContext;
import org.eclipse.team.ui.mapping.SynchronizationContentProvider;
/**
* A remote resource mapping context that wraps a synchronization context.
* This is used by the {@link SynchronizationContentProvider} to get the traversals
* for resource mappings. Since it is used to provide content, it avoids long running
* operations if possible.
*
* @since 3.2
*/
public final class SynchronizationResourceMappingContext extends
RemoteResourceMappingContext {
private final ISynchronizationContext context;
/**
* Create a resource mapping context for the given synchronization context
* @param context the synchronization context
*/
public SynchronizationResourceMappingContext(ISynchronizationContext context) {
this.context = context;
}
@Override
public boolean isThreeWay() {
return context.getType() == ISynchronizationContext.THREE_WAY;
}
@Override
public boolean hasRemoteChange(IResource resource, IProgressMonitor monitor) throws CoreException {
IDiff diff = context.getDiffTree().getDiff(resource);
if (diff instanceof IThreeWayDiff) {
IThreeWayDiff twd = (IThreeWayDiff) diff;
IDiff remote = twd.getRemoteChange();
return remote != null && remote.getKind() != IDiff.NO_CHANGE;
}
return diff != null && diff.getKind() != IDiff.NO_CHANGE;
}
@Override
public boolean hasLocalChange(IResource resource, IProgressMonitor monitor) throws CoreException {
IDiff diff = context.getDiffTree().getDiff(resource);
if (diff instanceof IThreeWayDiff) {
IThreeWayDiff twd = (IThreeWayDiff) diff;
IDiff local = twd.getLocalChange();
return local != null && local.getKind() != IDiff.NO_CHANGE;
}
return false;
}
@Override
public IStorage fetchRemoteContents(IFile file, IProgressMonitor monitor) throws CoreException {
IDiff diff = context.getDiffTree().getDiff(file);
if (diff instanceof IThreeWayDiff) {
IThreeWayDiff twd = (IThreeWayDiff) diff;
IDiff remote = twd.getRemoteChange();
if (remote instanceof IResourceDiff) {
IResourceDiff rd = (IResourceDiff) remote;
return rd.getAfterState().getStorage(monitor);
}
} else if (diff instanceof IResourceDiff) {
IResourceDiff rd = (IResourceDiff) diff;
return rd.getAfterState().getStorage(monitor);
}
return file;
}
@Override
public IStorage fetchBaseContents(IFile file, IProgressMonitor monitor) throws CoreException {
IDiff diff = context.getDiffTree().getDiff(file);
if (diff instanceof IThreeWayDiff) {
IThreeWayDiff twd = (IThreeWayDiff) diff;
IDiff remote = twd.getRemoteChange();
if (remote instanceof IResourceDiff) {
IResourceDiff rd = (IResourceDiff) remote;
return rd.getBeforeState().getStorage(monitor);
}
IDiff local = twd.getLocalChange();
if (local instanceof IResourceDiff) {
IResourceDiff rd = (IResourceDiff) local;
return rd.getBeforeState().getStorage(monitor);
}
}
return null;
}
@Override
public IResource[] fetchMembers(IContainer container, IProgressMonitor monitor) throws CoreException {
Set<IResource> result = new HashSet<>();
IResource[] children = container.members();
for (int i = 0; i < children.length; i++) {
IResource resource = children[i];
result.add(resource);
}
IPath[] childPaths = context.getDiffTree().getChildren(container.getFullPath());
for (int i = 0; i < childPaths.length; i++) {
IPath path = childPaths[i];
IDiff delta = context.getDiffTree().getDiff(path);
IResource child;
if (delta == null) {
// the path has descendent deltas so it must be a folder
if (path.segmentCount() == 1) {
child = ((IWorkspaceRoot)container).getProject(path.lastSegment());
} else {
child = container.getFolder(new Path(path.lastSegment()));
}
} else {
child = context.getDiffTree().getResource(delta);
}
result.add(child);
}
return result.toArray(new IResource[result.size()]);
}
@Override
public void refresh(ResourceTraversal[] traversals, int flags, IProgressMonitor monitor) throws CoreException {
//context.refresh(traversals, flags, monitor);
}
public ISynchronizationContext getSynchronizationContext() {
return context;
}
@Override
public IProject[] getProjects() {
Set<IProject> projects = new HashSet<>();
IResource[] roots = context.getScope().getRoots();
for (int i = 0; i < roots.length; i++) {
IResource resource = roots[i];
projects.add(resource.getProject());
}
return projects.toArray(new IProject[projects.size()]);
}
}
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