| /******************************************************************************* |
| * Copyright (c) 2005 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.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"); //$NON-NLS-1$ |
| } |
| |
| } |