--- a/src/org/tmatesoft/hg/core/HgRevertCommand.java	Fri Apr 19 20:30:34 2013 +0200
+++ b/src/org/tmatesoft/hg/core/HgRevertCommand.java	Mon Apr 22 16:02:17 2013 +0200
@@ -30,8 +30,10 @@
 import org.tmatesoft.hg.repo.HgManifest.Flags;
 import org.tmatesoft.hg.repo.HgRepository;
 import org.tmatesoft.hg.repo.HgRuntimeException;
+import org.tmatesoft.hg.util.CancelSupport;
 import org.tmatesoft.hg.util.CancelledException;
 import org.tmatesoft.hg.util.Path;
+import org.tmatesoft.hg.util.ProgressSupport;
 
 /**
  * WORK IN PROGRESS.
@@ -95,12 +97,16 @@
 	/**
 	 * Perform the back out for the given files
 	 * 
-	 * @throws HgIOException 
-	 * @throws HgException
-	 * @throws CancelledException
+	 * @throws HgIOException to indicate troubles updating files in working copy
+	 * @throws HgException subclass thereof to indicate specific issue with the command arguments or repository state
+	 * @throws CancelledException if execution of the command was cancelled
 	 */
 	public void execute() throws HgException, CancelledException {
 		try {
+			final ProgressSupport progress = getProgressSupport(null);
+			final CancelSupport cancellation = getCancelSupport(null, true);
+			cancellation.checkCancelled();
+			progress.start(files.size() + 2);
 			final int csetRevision;
 			if (changesetToCheckout.get() == HgRepository.WORKING_COPY) {
 				csetRevision = repo.getChangelog().getRevisionIndex(repo.getWorkingCopyParents().first());
@@ -110,6 +116,9 @@
 			Internals implRepo = Internals.getInstance(repo);
 			final DirstateBuilder dirstateBuilder = new DirstateBuilder(implRepo);
 			dirstateBuilder.fillFrom(new DirstateReader(implRepo, new Path.SimpleSource()));
+			progress.worked(1);
+			cancellation.checkCancelled();
+			
 			final HgCheckoutCommand.CheckoutWorker worker = new HgCheckoutCommand.CheckoutWorker(implRepo);
 			
 			HgManifest.Inspector insp = new HgManifest.Inspector() {
@@ -146,8 +155,12 @@
 				}
 				repo.getManifest().walkFileRevisions(file, insp, csetRevision);
 				worker.checkFailed();
+				progress.worked(1);
+				cancellation.checkCancelled();
 			}
 			dirstateBuilder.serialize();
+			progress.worked(1);
+			progress.done();
 		} catch (HgRuntimeException ex) {
 			throw new HgLibraryFailureException(ex);
 		}