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

Introduction

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

Source

/*******************************************************************************
 * 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.ResetOperation;
import org.eclipse.egit.core.op.ResetOperation.ResetType;
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.ResetTargetSelectionDialog;
import org.eclipse.jface.dialogs.IDialogConstants;
import org.eclipse.jface.dialogs.MessageDialog;
import org.eclipse.jgit.lib.Repository;
import org.eclipse.osgi.util.NLS;

/**
 * An action to reset the current branch to a specific revision.
 *
 * @see ResetOperation
 */
public class ResetActionHandler extends RepositoryActionHandler {

    public Object execute(ExecutionEvent event) throws ExecutionException {
        final Repository repository = getRepository(true, event);
        if (repository == null)
            return null;
        if (!repository.getRepositoryState().canResetHead()) {
            MessageDialog.openError(getShell(event), UIText.ResetAction_errorResettingHead,
                    NLS.bind(UIText.ResetAction_repositoryState, repository.getRepositoryState().getDescription()));
            return null;
        }
        ResetTargetSelectionDialog branchSelectionDialog = new ResetTargetSelectionDialog(getShell(event),
                repository);
        if (branchSelectionDialog.open() == IDialogConstants.OK_ID) {
            final String refName = branchSelectionDialog.getRefName();
            final ResetType type = branchSelectionDialog.getResetType();
            String jobname = NLS.bind(UIText.ResetAction_reset, refName);
            final ResetOperation operation = new ResetOperation(repository, refName, type);
            Job job = new Job(jobname) {
                @Override
                protected IStatus run(IProgressMonitor monitor) {
                    try {
                        operation.execute(monitor);
                        GitLightweightDecorator.refresh();
                    } catch (CoreException e) {
                        return Activator.createErrorStatus(e.getStatus().getMessage(), e);
                    }
                    return Status.OK_STATUS;
                }
            };
            job.setRule(operation.getSchedulingRule());
            job.setUser(true);
            job.schedule();
        }
        return null;
    }

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