/*******************************************************************************
* Copyright (C) 2010, Mathias Kinzler <mathias.kinzler@sap.com>
*
* 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.history.command;
import java.io.File;
import java.io.IOException;
import java.util.ArrayList;
import java.util.Iterator;
import java.util.List;
import org.eclipse.compare.ITypedElement;
import org.eclipse.core.commands.ExecutionEvent;
import org.eclipse.core.commands.ExecutionException;
import org.eclipse.core.resources.IFile;
import org.eclipse.core.runtime.CoreException;
import org.eclipse.core.runtime.NullProgressMonitor;
import org.eclipse.egit.core.project.RepositoryMapping;
import org.eclipse.egit.ui.Activator;
import org.eclipse.egit.ui.internal.CompareUtils;
import org.eclipse.egit.ui.internal.EgitUiEditorUtils;
import org.eclipse.egit.ui.internal.UIText;
import org.eclipse.egit.ui.internal.history.GitHistoryPage;
import org.eclipse.egit.ui.internal.revision.GitCompareFileRevisionEditorInput;
import org.eclipse.jface.dialogs.MessageDialog;
import org.eclipse.jface.viewers.IStructuredSelection;
import org.eclipse.jgit.lib.Constants;
import org.eclipse.jgit.lib.ObjectId;
import org.eclipse.jgit.lib.Repository;
import org.eclipse.jgit.revwalk.RevCommit;
import org.eclipse.jgit.revwalk.RevWalk;
import org.eclipse.osgi.util.NLS;
import org.eclipse.team.core.history.IFileRevision;
import org.eclipse.team.ui.synchronize.SaveableCompareEditorInput;
import org.eclipse.ui.IWorkbenchPage;
import org.eclipse.ui.handlers.HandlerUtil;
/**
* Show versions/open.
* <p>
* If a single version is selected, open it, otherwise open several versions of
* the file content.
*/
public class ShowVersionsHandler extends AbstractHistoryCommandHandler {
public Object execute(ExecutionEvent event) throws ExecutionException {
boolean compareMode = Boolean.TRUE.toString().equals(
event.getParameter(HistoryViewCommands.COMPARE_MODE_PARAM));
IStructuredSelection selection = getSelection(getPage());
if (selection.size() < 1)
return null;
Object input = getPage().getInputInternal().getSingleFile();
if (input == null)
return null;
IWorkbenchPage workBenchPage = HandlerUtil
.getActiveWorkbenchWindowChecked(event).getActivePage();
boolean errorOccurred = false;
List<ObjectId> ids = new ArrayList<ObjectId>();
String gitPath = null;
if (input instanceof IFile) {
IFile resource = (IFile) input;
final RepositoryMapping map = RepositoryMapping
.getMapping(resource);
gitPath = map.getRepoRelativePath(resource);
Iterator<?> it = selection.iterator();
while (it.hasNext()) {
RevCommit commit = (RevCommit) it.next();
String commitPath = getRenamedPath(gitPath, commit);
IFileRevision rev = null;
try {
rev = CompareUtils.getFileRevision(commitPath, commit,
map.getRepository(), null);
} catch (IOException e) {
Activator.logError(NLS.bind(
UIText.GitHistoryPage_errorLookingUpPath, gitPath,
commit.getId()), e);
errorOccurred = true;
}
if (rev != null) {
if (compareMode) {
ITypedElement right = CompareUtils
.getFileRevisionTypedElement(commitPath,
commit, map.getRepository());
final GitCompareFileRevisionEditorInput in = new GitCompareFileRevisionEditorInput(
SaveableCompareEditorInput
.createFileElement(resource), right,
null);
try {
CompareUtils.openInCompare(workBenchPage, in);
} catch (Exception e) {
errorOccurred = true;
}
} else
try {
EgitUiEditorUtils.openEditor(getPart(event)
.getSite().getPage(), rev,
new NullProgressMonitor());
} catch (CoreException e) {
Activator.logError(
UIText.GitHistoryPage_openFailed, e);
errorOccurred = true;
}
} else
ids.add(commit.getId());
}
}
if (input instanceof File) {
File fileInput = (File) input;
Repository repo = getRepository(event);
gitPath = getRepoRelativePath(repo, fileInput);
Iterator<?> it = selection.iterator();
while (it.hasNext()) {
RevCommit commit = (RevCommit) it.next();
String commitPath = getRenamedPath(gitPath, commit);
IFileRevision rev = null;
try {
rev = CompareUtils.getFileRevision(commitPath, commit,
repo, null);
} catch (IOException e) {
Activator.logError(NLS.bind(
UIText.GitHistoryPage_errorLookingUpPath,
commitPath, commit.getId()), e);
errorOccurred = true;
}
if (rev != null) {
if (compareMode)
try {
ITypedElement left = CompareUtils
.getFileRevisionTypedElement(gitPath,
new RevWalk(repo).parseCommit(repo
.resolve(Constants.HEAD)),
repo);
ITypedElement right = CompareUtils
.getFileRevisionTypedElement(commitPath,
commit, repo);
final GitCompareFileRevisionEditorInput in = new GitCompareFileRevisionEditorInput(
left, right, null);
CompareUtils.openInCompare(workBenchPage, in);
} catch (IOException e) {
errorOccurred = true;
}
else
try {
EgitUiEditorUtils.openEditor(getPart(event)
.getSite().getPage(), rev,
new NullProgressMonitor());
} catch (CoreException e) {
Activator.logError(
UIText.GitHistoryPage_openFailed, e);
errorOccurred = true;
}
} else
ids.add(commit.getId());
}
}
if (errorOccurred)
Activator.showError(UIText.GitHistoryPage_openFailed, null);
if (ids.size() > 0) {
StringBuilder idList = new StringBuilder(""); //$NON-NLS-1$
for (ObjectId objectId : ids)
idList.append(objectId.getName()).append(' ');
MessageDialog.openError(getPart(event).getSite().getShell(),
UIText.GitHistoryPage_fileNotFound, NLS.bind(
UIText.GitHistoryPage_notContainedInCommits,
gitPath, idList.toString()));
}
return null;
}
@Override
public boolean isEnabled() {
GitHistoryPage page = getPage();
if (page == null)
return false;
int size = getSelection(page).size();
if (size == 0)
return false;
return page.getInputInternal().isSingleFile();
}
}