org.eclipse.mylyn.internal.git.ui.connector.GitConnectorUi.java Source code

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Here is the source code for org.eclipse.mylyn.internal.git.ui.connector.GitConnectorUi.java

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/*******************************************************************************
 * Copyright (c) 2011 Ericsson Research Canada 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:
 *   Ericsson - Initial API and implementation
 *******************************************************************************/
package org.eclipse.mylyn.internal.git.ui.connector;

import org.eclipse.core.resources.IProject;
import org.eclipse.core.resources.IResource;
import org.eclipse.core.runtime.Assert;
import org.eclipse.egit.core.GitProvider;
import org.eclipse.egit.ui.internal.commit.CommitEditor;
import org.eclipse.egit.ui.internal.commit.RepositoryCommit;
import org.eclipse.jface.window.Window;
import org.eclipse.jgit.lib.ObjectId;
import org.eclipse.jgit.lib.Repository;
import org.eclipse.jgit.revwalk.RevCommit;
import org.eclipse.jgit.revwalk.RevWalk;
import org.eclipse.mylyn.internal.git.core.GitRepository;
import org.eclipse.mylyn.internal.git.ui.GetChangeSetDialog;
import org.eclipse.mylyn.versions.core.ChangeSet;
import org.eclipse.mylyn.versions.core.ScmCore;
import org.eclipse.mylyn.versions.core.ScmRepository;
import org.eclipse.mylyn.versions.core.spi.ScmConnector;
import org.eclipse.mylyn.versions.ui.spi.ScmConnectorUi;

/**
 * Entry class to resolve the generic versions components from a User interface.
 * 
 * @author Alvaro Sanchez-Leon
 */
public class GitConnectorUi extends ScmConnectorUi {

    public static final String ID_PLUGIN = "org.eclipse.mylyn.git.ui"; //$NON-NLS-1$

    @Override
    public ChangeSet getChangeSet(ScmRepository repository, IResource resource) {
        Assert.isNotNull(resource);

        final IProject project = resource.getProject();
        Assert.isNotNull(project);

        // Resolve Git Scm connector
        final ScmConnector scmConnector = ScmCore.getConnector(resource);
        Assert.isNotNull(scmConnector);

        // Check if the provider is for Git
        if (!GitProvider.class.getName().equals(scmConnector.getProviderId())) {
            throw new RuntimeException("No Git connector: " + scmConnector.getProviderId());
        }

        final GetChangeSetDialog dialog = new GetChangeSetDialog(null, project);
        final int result = dialog.open();
        if (result == Window.OK) {
            return dialog.getChangeSet();
        } // else Window.CANCEL
        return null;
    }

    @Override
    public void showChangeSetInView(ChangeSet cs) {
        String objectId = cs.getId();
        GitRepository repo = (GitRepository) cs.getRepository();
        Repository repository = repo.getRepository();
        CommitEditor.openQuiet(new RepositoryCommit(repository, getCommit(repository, objectId)));
    }

    private RevCommit getCommit(Repository repository, String objectId) {
        RevWalk revWalk = null;
        try {
            revWalk = new RevWalk(repository);
            return revWalk.parseCommit(ObjectId.fromString(objectId));
        } catch (Exception e) {
            return null;
        } finally {
            if (revWalk != null) {
                revWalk.release();
            }
        }
    }
}