/*******************************************************************************
* Copyright (c) 2010 SAP AG.
* 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:
* Christian Halstrick (SAP AG) - initial implementation
* Mathias Kinzler (SAP AG) - initial implementation
* Robin Rosenberg - Adoption for the history menu
*******************************************************************************/
package org.eclipse.egit.ui.internal.history.command;
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.IJobChangeEvent;
import org.eclipse.core.runtime.jobs.Job;
import org.eclipse.core.runtime.jobs.JobChangeAdapter;
import org.eclipse.egit.core.op.MergeOperation;
import org.eclipse.egit.ui.Activator;
import org.eclipse.egit.ui.internal.UIText;
import org.eclipse.egit.ui.internal.actions.MergeActionHandler;
import org.eclipse.egit.ui.internal.dialogs.BranchSelectionDialog;
import org.eclipse.egit.ui.internal.merge.MergeResultDialog;
import org.eclipse.egit.ui.internal.repository.tree.RefNode;
import org.eclipse.jface.dialogs.MessageDialog;
import org.eclipse.jface.window.Window;
import org.eclipse.jgit.lib.Constants;
import org.eclipse.jgit.lib.ObjectId;
import org.eclipse.jgit.lib.Repository;
import org.eclipse.jgit.lib.RepositoryState;
import org.eclipse.osgi.util.NLS;
import org.eclipse.swt.SWT;
import org.eclipse.swt.widgets.Display;
import org.eclipse.swt.widgets.Shell;
import org.eclipse.ui.PlatformUI;
import org.eclipse.ui.handlers.HandlerUtil;
/**
* Executes the Merge
*/
public class MergeHandler extends AbstractHistoryCommandHandler {
@Override
public boolean isEnabled() {
final Repository repository = getRepository(getPage());
if (repository == null)
return false;
return repository.getRepositoryState().equals(RepositoryState.SAFE);
}
public Object execute(ExecutionEvent event) throws ExecutionException {
ObjectId commitId = getSelectedCommitId(event);
final Repository repository = getRepository(event);
if (repository == null)
return null;
if (!MergeActionHandler.checkMergeIsPossible(repository, getShell(event)))
return null;
List<RefNode> nodes = getRefNodes(commitId, repository,
Constants.R_REFS);
String refName;
if (nodes.isEmpty())
refName = commitId.getName();
else if (nodes.size() == 1)
refName = nodes.get(0).getObject().getName();
else {
BranchSelectionDialog<RefNode> dlg = new BranchSelectionDialog<RefNode>(
HandlerUtil.getActiveShellChecked(event), nodes,
UIText.MergeHandler_SelectBranchTitle,
UIText.MergeHandler_SelectBranchMessage, SWT.SINGLE);
if (dlg.open() == Window.OK)
refName = dlg.getSelectedNode().getObject().getName();
else
return null;
}
String jobname = NLS.bind(UIText.MergeAction_JobNameMerge, refName);
final MergeOperation op = new MergeOperation(repository, refName);
Job job = new WorkspaceJob(jobname) {
@Override
public IStatus runInWorkspace(IProgressMonitor monitor) {
try {
op.execute(monitor);
} catch (final CoreException e) {
return e.getStatus();
}
return Status.OK_STATUS;
}
};
job.setUser(true);
job.setRule(op.getSchedulingRule());
job.addJobChangeListener(new JobChangeAdapter() {
@Override
public void done(IJobChangeEvent cevent) {
IStatus result = cevent.getJob().getResult();
if (result.getSeverity() == IStatus.CANCEL)
Display.getDefault().asyncExec(new Runnable() {
public void run() {
// don't use getShell(event) here since
// the active shell has changed since the
// execution has been triggered.
Shell shell = PlatformUI.getWorkbench()
.getActiveWorkbenchWindow().getShell();
MessageDialog
.openInformation(
shell,
UIText.MergeAction_MergeCanceledTitle,
UIText.MergeAction_MergeCanceledMessage);
}
});
else if (!result.isOK())
Activator.handleError(result.getMessage(), result
.getException(), true);
else
Display.getDefault().asyncExec(new Runnable() {
public void run() {
Shell shell = PlatformUI.getWorkbench()
.getActiveWorkbenchWindow().getShell();
MergeResultDialog.getDialog(shell, repository, op
.getResult()).open();
}
});
}
});
job.schedule();
return null;
}
/**
* @param event
* @return the shell for the event
*/
public Shell getShell(ExecutionEvent event) {
return HandlerUtil.getActiveShell(event);
}
}