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/*******************************************************************************
* Copyright (c) 2005, 2006 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.examples.filesystem.ui;
import org.eclipse.core.resources.mapping.ResourceTraversal;
import org.eclipse.core.runtime.CoreException;
import org.eclipse.core.runtime.IProgressMonitor;
import org.eclipse.team.core.TeamException;
import org.eclipse.team.core.diff.*;
import org.eclipse.team.core.subscribers.SubscriberScopeManager;
import org.eclipse.team.examples.filesystem.FileSystemProvider;
import org.eclipse.team.examples.filesystem.Policy;
import org.eclipse.team.examples.filesystem.subscriber.FileSystemSubscriber;
import org.eclipse.ui.IWorkbenchPart;
/**
* Operation for getting the contents of the selected resources
*/
public class GetOperation extends FileSystemOperation {
private boolean overwriteOutgoing;
public GetOperation(IWorkbenchPart part, SubscriberScopeManager manager) {
super(part, manager);
}
/* (non-Javadoc)
* @see org.eclipse.team.examples.filesystem.ui.FileSystemOperation#execute(org.eclipse.team.examples.filesystem.FileSystemProvider, org.eclipse.core.resources.mapping.ResourceTraversal[], org.eclipse.core.runtime.SubProgressMonitor)
*/
protected void execute(FileSystemProvider provider,
ResourceTraversal[] traversals, IProgressMonitor monitor)
throws CoreException {
provider.getOperations().get(traversals, isOverwriteOutgoing(), monitor);
if (!isOverwriteOutgoing() && hasIncomingChanges(traversals)) {
throw new TeamException("Could not get all changes due to conflicts.");
}
}
private boolean hasIncomingChanges(ResourceTraversal[] traversals) throws CoreException {
final RuntimeException found = new RuntimeException();
try {
FileSystemSubscriber.getInstance().accept(traversals, new IDiffVisitor() {
public boolean visit(IDiff diff) {
if (diff instanceof IThreeWayDiff) {
IThreeWayDiff twd = (IThreeWayDiff) diff;
if (twd.getDirection() == IThreeWayDiff.INCOMING || twd.getDirection() == IThreeWayDiff.CONFLICTING) {
throw found;
}
}
return false;
}
});
} catch (RuntimeException e) {
if (e == found)
return true;
throw e;
}
return false;
}
/**
* Indicate whether the operation should overwrite outgoing changes.
* By default, the get operation does not override local modifications.
* @return whether the operation should overwrite outgoing changes.
*/
protected boolean isOverwriteOutgoing() {
return overwriteOutgoing;
}
/**
* Set whether the operation should overwrite outgoing changes.
* @param overwriteOutgoing whether the operation should overwrite outgoing changes
*/
public void setOverwriteOutgoing(boolean overwriteOutgoing) {
this.overwriteOutgoing = overwriteOutgoing;
}
/* (non-Javadoc)
* @see org.eclipse.team.examples.filesystem.ui.FileSystemOperation#getTaskName()
*/
protected String getTaskName() {
return Policy.bind("GetAction.working"); //$NON-NLS-1$
}
}
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