/*******************************************************************************
* Copyright (c) 2012 IBM Corporation 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:
* Tomasz Zarna (IBM) - initial implementation
*******************************************************************************/
package org.eclipse.egit.ui.internal.commit.command;
import java.text.MessageFormat;
import java.util.ArrayList;
import java.util.List;
import org.eclipse.core.commands.ExecutionEvent;
import org.eclipse.core.commands.ExecutionException;
import org.eclipse.core.resources.WorkspaceJob;
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.RevertCommitOperation;
import org.eclipse.egit.ui.Activator;
import org.eclipse.egit.ui.JobFamilies;
import org.eclipse.egit.ui.internal.UIText;
import org.eclipse.egit.ui.internal.commit.RepositoryCommit;
import org.eclipse.egit.ui.internal.dialogs.RevertFailureDialog;
import org.eclipse.jface.dialogs.MessageDialog;
import org.eclipse.jgit.api.MergeResult;
import org.eclipse.jgit.lib.Ref;
import org.eclipse.jgit.lib.Repository;
import org.eclipse.jgit.revwalk.RevCommit;
import org.eclipse.swt.widgets.Shell;
import org.eclipse.ui.PlatformUI;
/**
* Executes the {@link RevertCommitOperation}
*/
public class RevertHandler extends CommitCommandHandler {
/**
* Command id
*/
public static final String ID = "org.eclipse.egit.ui.commit.Revert"; //$NON-NLS-1$
public Object execute(final ExecutionEvent event) throws ExecutionException {
List<RepositoryCommit> repoCommits = getCommits(event);
Repository repo = repoCommits.get(0).getRepository();
final Shell shell = getPart(event).getSite().getShell();
final List<RevCommit> commits = new ArrayList<RevCommit>();
for (RepositoryCommit repoCommit : repoCommits)
commits.add(repoCommit.getRevCommit());
final RevertCommitOperation op = new RevertCommitOperation(repo,
commits);
Job job = new WorkspaceJob(MessageFormat.format(
UIText.RevertHandler_JobName, Integer.valueOf(commits.size()))) {
@Override
public IStatus runInWorkspace(IProgressMonitor monitor) {
try {
op.execute(monitor);
RevCommit newHead = op.getNewHead();
List<Ref> revertedRefs = op.getRevertedRefs();
if (newHead != null && revertedRefs.isEmpty())
showRevertedDialog(shell);
if (newHead == null) {
RevCommit newestUnmergedCommit = null;
for (RevCommit commit : commits) {
if (!contains(revertedRefs, commit)) {
newestUnmergedCommit = commit;
break;
}
}
showFailureDialog(shell, newestUnmergedCommit,
op.getFailingResult());
}
} catch (CoreException e) {
Activator.handleError(UIText.RevertOperation_InternalError,
e, true);
}
return Status.OK_STATUS;
}
@Override
public boolean belongsTo(Object family) {
if (JobFamilies.REVERT_COMMIT.equals(family))
return true;
return super.belongsTo(family);
}
};
job.setUser(true);
job.setRule(op.getSchedulingRule());
job.schedule();
return null;
}
private boolean contains(List<Ref> refs, RevCommit commit) {
for (Ref ref : refs)
if (ref.getObjectId().equals(commit.getId()))
return true;
return false;
}
/**
* Shows a dialog with failing result of revert.
*
* @param shell
* the shell to parent the dialog from
* @param commit
* the commit
* @param result
* the failing result
*/
private static void showFailureDialog(final Shell shell,
final RevCommit commit, final MergeResult result) {
shell.getDisplay().syncExec(new Runnable() {
public void run() {
RevertFailureDialog.show(shell, commit, result);
}
});
}
/**
* Shows the "No revert performed" dialog.
*
* @param shell
* the shell to parent the dialog from
*/
private static void showRevertedDialog(final Shell shell) {
PlatformUI.getWorkbench().getDisplay().syncExec(new Runnable() {
public void run() {
MessageDialog.openWarning(shell,
UIText.RevertHandler_NoRevertTitle,
UIText.RevertHandler_AlreadyRevertedMessage);
}
});
}
}