Index: applications/editors/josm/plugins/reverter/src/reverter/RevertChangesetHandler.java
===================================================================
--- applications/editors/josm/plugins/reverter/src/reverter/RevertChangesetHandler.java	(revision 27245)
+++ applications/editors/josm/plugins/reverter/src/reverter/RevertChangesetHandler.java	(revision 27245)
@@ -0,0 +1,32 @@
+package reverter;
+
+import static org.openstreetmap.josm.tools.I18n.tr;
+
+import org.openstreetmap.josm.Main;
+import org.openstreetmap.josm.io.remotecontrol.handler.RequestHandler;
+
+public class RevertChangesetHandler extends RequestHandler {
+    public static final String command = "revert_changeset";
+    public static final String permissionKey = "remotecontrol.permission.revert_changeset";
+    public static final boolean permissionDefault = true;
+
+    @Override
+    protected void handleRequest() throws RequestHandlerErrorException,
+            RequestHandlerBadRequestException {
+        try
+        {
+            int changesetId = Integer.parseInt(args.get("id"));
+            Main.worker.submit(new RevertChangesetTask(changesetId, ChangesetReverter.RevertType.FULL, true));
+        } catch (Exception ex) {
+            System.out.println("RemoteControl: Error parsing revert_changeset remote control request:");
+            ex.printStackTrace();
+            throw new RequestHandlerErrorException();
+        }
+
+    }
+
+    @Override
+    public String getPermissionMessage() {
+        return tr("Remote Control has been asked to a revert changeset.");
+    }
+}
Index: applications/editors/josm/plugins/reverter/src/reverter/RevertChangesetTask.java
===================================================================
--- applications/editors/josm/plugins/reverter/src/reverter/RevertChangesetTask.java	(revision 27245)
+++ applications/editors/josm/plugins/reverter/src/reverter/RevertChangesetTask.java	(revision 27245)
@@ -0,0 +1,93 @@
+package reverter;
+
+import static org.openstreetmap.josm.tools.I18n.tr;
+
+import java.util.List;
+
+import javax.swing.JOptionPane;
+
+import org.openstreetmap.josm.Main;
+import org.openstreetmap.josm.command.Command;
+import org.openstreetmap.josm.gui.PleaseWaitRunnable;
+import org.openstreetmap.josm.gui.progress.PleaseWaitProgressMonitor;
+import org.openstreetmap.josm.gui.progress.ProgressMonitor;
+import org.openstreetmap.josm.io.OsmTransferException;
+
+import reverter.ChangesetReverter.RevertType;
+
+public class RevertChangesetTask extends PleaseWaitRunnable {
+    private final int changesetId;
+    private final RevertType revertType;
+
+    private ChangesetReverter rev;
+    private boolean downloadConfirmed = false;
+
+    public RevertChangesetTask(int changesetId, RevertType revertType)
+    {
+        super(tr("Reverting..."));
+        this.changesetId = changesetId;
+        this.revertType = revertType;
+    }
+    public RevertChangesetTask(int changesetId, RevertType revertType, boolean autoConfirmDownload)
+    {
+        this(changesetId, revertType);
+        downloadConfirmed = autoConfirmDownload;
+    }
+
+    private boolean checkAndDownloadMissing() throws OsmTransferException {
+        if (!rev.hasMissingObjects()) return true;
+        if (!downloadConfirmed) {
+            downloadConfirmed = JOptionPane.showConfirmDialog(Main.parent,
+                    tr("This changeset has objects that are not present in current dataset.\n" +
+                            "It is needed to download them before reverting. Do you want to continue?"),
+                    tr("Confirm"), JOptionPane.YES_NO_OPTION) == JOptionPane.YES_OPTION;
+            if (!downloadConfirmed) return false;
+        }
+        final PleaseWaitProgressMonitor monitor =
+            new PleaseWaitProgressMonitor(tr("Fetching missing primitives"));
+        try {
+            rev.downloadMissingPrimitives(monitor);
+        } finally {
+            monitor.close();
+        }
+        return !monitor.isCanceled();
+    }
+
+    @Override
+    protected void realRun() throws OsmTransferException {
+        progressMonitor.indeterminateSubTask(tr("Downloading changeset"));
+        rev = new ChangesetReverter(changesetId, revertType,
+                progressMonitor.createSubTaskMonitor(0, true));
+        if (progressMonitor.isCanceled()) return;
+
+        // Check missing objects
+        rev.checkMissingCreated();
+        rev.checkMissingUpdated();
+        if (rev.hasMissingObjects()) {
+            // If missing created or updated objects, ask user
+            rev.checkMissingDeleted();
+            if (!checkAndDownloadMissing()) return;
+        } else {
+            // Don't ask user to download primitives going to be undeleted
+            rev.checkMissingDeleted();
+            rev.downloadMissingPrimitives(progressMonitor.createSubTaskMonitor(0, false));
+        }
+
+        if (progressMonitor.isCanceled()) return;
+        rev.downloadObjectsHistory(progressMonitor.createSubTaskMonitor(ProgressMonitor.ALL_TICKS, false));
+        if (progressMonitor.isCanceled()) return;
+        if (!checkAndDownloadMissing()) return;
+        List<Command> cmds = rev.getCommands();
+        Command cmd = new RevertChangesetCommand(tr(revertType == RevertType.FULL ? "Revert changeset #{0}" :
+                "Partially revert changeset #{0}",changesetId),cmds);
+        Main.main.undoRedo.add(cmd);
+    }
+
+    @Override
+    protected void cancel() {
+    }
+
+    @Override
+    protected void finish() {
+    }
+}