org.eclipse.egit.core.op.RevertCommitOperation.java Source code

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Here is the source code for org.eclipse.egit.core.op.RevertCommitOperation.java

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/******************************************************************************
 *  Copyright (c) 2011 GitHub Inc.
 *  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:
 *    Kevin Sawicki (GitHub Inc.) - initial API and implementation
 *****************************************************************************/
package org.eclipse.egit.core.op;

import java.text.MessageFormat;
import java.util.List;

import org.eclipse.core.resources.IWorkspaceRunnable;
import org.eclipse.core.resources.ResourcesPlugin;
import org.eclipse.core.runtime.CoreException;
import org.eclipse.core.runtime.IProgressMonitor;
import org.eclipse.core.runtime.NullProgressMonitor;
import org.eclipse.core.runtime.SubProgressMonitor;
import org.eclipse.core.runtime.jobs.ISchedulingRule;
import org.eclipse.egit.core.CoreText;
import org.eclipse.egit.core.internal.util.ProjectUtil;
import org.eclipse.jgit.api.Git;
import org.eclipse.jgit.api.MergeResult;
import org.eclipse.jgit.api.RevertCommand;
import org.eclipse.jgit.api.errors.GitAPIException;
import org.eclipse.jgit.lib.Ref;
import org.eclipse.jgit.lib.Repository;
import org.eclipse.jgit.revwalk.RevCommit;
import org.eclipse.team.core.TeamException;

/**
 * Operation to revert a commit
 */
public class RevertCommitOperation implements IEGitOperation {

    private final Repository repo;

    private final RevCommit commit;

    private RevCommit newHead;

    private List<Ref> reverted;

    private MergeResult result;

    /**
     * Create revert commit operation
     *
     * @param repository
     * @param commit
     */
    public RevertCommitOperation(Repository repository, RevCommit commit) {
        this.repo = repository;
        this.commit = commit;
    }

    /**
     * @return new head commit
     */
    public RevCommit getNewHead() {
        return newHead;
    }

    /**
     * @return reverted refs
     */
    public List<Ref> getRevertedRefs() {
        return reverted;
    }

    public void execute(IProgressMonitor m) throws CoreException {
        IProgressMonitor monitor = m != null ? m : new NullProgressMonitor();
        IWorkspaceRunnable action = new IWorkspaceRunnable() {

            public void run(IProgressMonitor pm) throws CoreException {
                pm.beginTask("", 2); //$NON-NLS-1$

                pm.subTask(MessageFormat.format(CoreText.RevertCommitOperation_reverting, commit.name()));
                RevertCommand command = new Git(repo).revert().include(commit);
                try {
                    newHead = command.call();
                    reverted = command.getRevertedRefs();
                    result = command.getFailingResult();
                } catch (GitAPIException e) {
                    throw new TeamException(e.getLocalizedMessage(), e.getCause());
                }
                pm.worked(1);

                ProjectUtil.refreshValidProjects(ProjectUtil.getValidOpenProjects(repo),
                        new SubProgressMonitor(pm, 1));

                pm.done();
            }
        };
        ResourcesPlugin.getWorkspace().run(action, monitor);
    }

    public ISchedulingRule getSchedulingRule() {
        return ResourcesPlugin.getWorkspace().getRoot();
    }

    /**
     * Get failing result of merge
     *
     * @return merge result
     */
    public MergeResult getFailingResult() {
        return result;
    }
}