org.eclipse.egit.ui.internal.actions.BranchActionHandler.java Source code

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Here is the source code for org.eclipse.egit.ui.internal.actions.BranchActionHandler.java

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/*******************************************************************************
 * Copyright (C) 2007, Dave Watson <dwatson@mimvista.com>
 * Copyright (C) 2008, Robin Rosenberg <robin.rosenberg@dewire.com>
 * Copyright (C) 2006, Shawn O. Pearce <spearce@spearce.org>
 *
 * 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
 *******************************************************************************/
package org.eclipse.egit.ui.internal.actions;

import org.eclipse.core.commands.ExecutionEvent;
import org.eclipse.core.commands.ExecutionException;
import org.eclipse.core.runtime.CoreException;
import org.eclipse.core.runtime.IProgressMonitor;
import org.eclipse.core.runtime.IStatus;
import org.eclipse.core.runtime.Status;
import org.eclipse.core.runtime.jobs.Job;
import org.eclipse.egit.core.op.BranchOperation;
import org.eclipse.egit.ui.Activator;
import org.eclipse.egit.ui.UIText;
import org.eclipse.egit.ui.internal.decorators.GitLightweightDecorator;
import org.eclipse.egit.ui.internal.dialogs.BranchSelectionDialog;
import org.eclipse.jface.dialogs.MessageDialog;
import org.eclipse.jface.window.Window;
import org.eclipse.jgit.lib.Repository;
import org.eclipse.osgi.util.NLS;

/**
 * Action for selecting a branch and checking it out.
 *
 * @see BranchOperation
 */
public class BranchActionHandler extends RepositoryActionHandler {

    public Object execute(ExecutionEvent event) throws ExecutionException {
        final Repository repository = getRepository(true, event);
        if (repository == null)
            return null;

        if (!repository.getRepositoryState().canCheckout()) {
            MessageDialog.openError(getShell(event), UIText.BranchAction_cannotCheckout, NLS
                    .bind(UIText.BranchAction_repositoryState, repository.getRepositoryState().getDescription()));
            return null;
        }

        BranchSelectionDialog dialog = new BranchSelectionDialog(getShell(event), repository);
        if (dialog.open() != Window.OK) {
            return null;
        }

        final String refName = dialog.getRefName();

        String jobname = NLS.bind(UIText.BranchAction_checkingOut, refName);
        Job job = new Job(jobname) {
            @Override
            protected IStatus run(IProgressMonitor monitor) {
                try {
                    new BranchOperation(repository, refName).execute(monitor);
                } catch (CoreException e) {
                    return Activator.createErrorStatus(UIText.BranchAction_branchFailed, e);
                } finally {
                    GitLightweightDecorator.refresh();
                }
                return Status.OK_STATUS;
            }
        };
        job.setUser(true);
        job.schedule();
        return null;
    }

    @Override
    public boolean isEnabled() {
        return getRepository() != null;
    }
}