| /*=============================================================================# |
| # Copyright (c) 2011, 2019 Stephan Wahlbrink and others. |
| # |
| # This program and the accompanying materials are made available under the |
| # terms of the Eclipse Public License 2.0 which is available at |
| # https://www.eclipse.org/legal/epl-2.0, or the Apache License, Version 2.0 |
| # which is available at https://www.apache.org/licenses/LICENSE-2.0. |
| # |
| # SPDX-License-Identifier: EPL-2.0 OR Apache-2.0 |
| # |
| # Contributors: |
| # Stephan Wahlbrink <sw@wahlbrink.eu> - initial API and implementation |
| #=============================================================================*/ |
| |
| package org.eclipse.statet.rj.services; |
| |
| import java.util.concurrent.Callable; |
| import java.util.concurrent.locks.Lock; |
| |
| import org.eclipse.statet.jcommons.lang.NonNullByDefault; |
| import org.eclipse.statet.jcommons.status.ProgressMonitor; |
| |
| |
| /** |
| * |
| * @provisional |
| */ |
| @NonNullByDefault |
| public interface RServiceControlExtension { |
| |
| |
| /** |
| * Adds a cancel handler called when the tool is canceled to the stack of cancel handlers. |
| * <p> |
| * The cancel handler should return <code>true</code> if the cancel event was handled |
| * completely and the other handlers will not be called.</p> |
| * |
| * @param handler the handler |
| */ |
| void addCancelHandler(final Callable<Boolean> handler); |
| |
| /** |
| * Removes a cancel handler from the stack of cancel handlers. |
| * |
| * @param handler the handler |
| */ |
| void removeCancelHandler(final Callable<Boolean> handler); |
| |
| |
| /** |
| * The lock for wait operations. |
| * |
| * @return the lock |
| */ |
| Lock getWaitLock(); |
| |
| /** |
| * Waits in the current tool thread. |
| * <p> |
| * If short background operations are waiting for execution, they are executed (depends on |
| * implementation).</p> |
| * <p> |
| * The current thread must hold the lock {@link #getWaitLock()}. The method returns after a |
| * short waiting time, operations are executed <b>or</b> {@link #resume()} is called.</p> |
| * |
| * @param m the current monitor |
| */ |
| void waitingForUser(final ProgressMonitor m); |
| |
| /** |
| * Resumes the tool thread which is waiting in {@link #waitingForUser(ProgressMonitor)}. |
| */ |
| void resume(); |
| |
| } |