/******************************************************************************
* Copyright (c) 2011, 2012 GitHub Inc. 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:
* Kevin Sawicki (GitHub Inc.) - initial API and implementation
* François Rey - gracefully ignore linked resources
*****************************************************************************/
package org.eclipse.egit.ui.internal.actions;
import org.eclipse.core.commands.ExecutionEvent;
import org.eclipse.core.commands.ExecutionException;
import org.eclipse.core.resources.IResource;
import org.eclipse.core.resources.IStorage;
import org.eclipse.core.runtime.CoreException;
import org.eclipse.core.runtime.NullProgressMonitor;
import org.eclipse.egit.core.internal.job.JobUtil;
import org.eclipse.egit.core.internal.storage.CommitFileRevision;
import org.eclipse.egit.core.project.RepositoryMapping;
import org.eclipse.egit.ui.JobFamilies;
import org.eclipse.egit.ui.internal.UIText;
import org.eclipse.egit.ui.internal.blame.BlameOperation;
import org.eclipse.jface.viewers.IStructuredSelection;
import org.eclipse.jgit.lib.Repository;
import org.eclipse.jgit.revwalk.RevCommit;
import org.eclipse.swt.widgets.Shell;
import org.eclipse.ui.IWorkbenchPage;
import org.eclipse.ui.handlers.HandlerUtil;
/**
* Show blame annotations action handler
*/
public class ShowBlameActionHandler extends RepositoryActionHandler {
/** @see org.eclipse.core.commands.IHandler#execute(org.eclipse.core.commands.ExecutionEvent) */
public Object execute(final ExecutionEvent event) throws ExecutionException {
Data data = getData(getSelection(event));
if (data == null)
return null;
Repository repository = data.repository;
String path = data.repositoryRelativePath;
IStorage storage = data.storage;
RevCommit startCommit = data.startCommit;
Shell shell = HandlerUtil.getActiveShell(event);
IWorkbenchPage page = HandlerUtil.getActiveSite(event).getPage();
JobUtil.scheduleUserJob(new BlameOperation(repository, storage, path,
startCommit, shell, page), UIText.ShowBlameHandler_JobName,
JobFamilies.BLAME);
return null;
}
@Override
public boolean isEnabled() {
IStructuredSelection selection = getSelection();
return getData(selection) != null;
}
private static Data getData(IStructuredSelection selection) {
if (selection.size() != 1)
return null;
Object element = selection.getFirstElement();
if (element instanceof IResource) {
IResource resource = (IResource) element;
if (resource instanceof IStorage) {
IStorage storage = (IStorage) resource;
RepositoryMapping mapping = RepositoryMapping
.getMapping(resource);
if (mapping != null) {
String repoRelativePath = mapping
.getRepoRelativePath(resource);
return new Data(mapping.getRepository(), repoRelativePath,
storage, null);
}
}
} else if (element instanceof CommitFileRevision) {
CommitFileRevision revision = (CommitFileRevision) element;
try {
IStorage storage = revision.getStorage(new NullProgressMonitor());
return new Data(revision.getRepository(),
revision.getGitPath(), storage, revision.getRevCommit());
} catch (CoreException e) {
// Don't enable
return null;
}
}
return null;
}
private static class Data {
private final Repository repository;
private final String repositoryRelativePath;
private final IStorage storage;
private final RevCommit startCommit;
public Data(Repository repository, String repositoryRelativePath,
IStorage storage, RevCommit startCommit) {
this.repository = repository;
this.repositoryRelativePath = repositoryRelativePath;
this.storage = storage;
this.startCommit = startCommit;
}
}
}