/*******************************************************************************
* Copyright (C) 2011, Matthias Sohn <matthias.sohn@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.reflog.command;
import java.io.IOException;
import org.eclipse.core.commands.AbstractHandler;
import org.eclipse.core.commands.ExecutionEvent;
import org.eclipse.core.commands.ExecutionException;
import org.eclipse.egit.ui.internal.UIText;
import org.eclipse.egit.ui.internal.reflog.ReflogView;
import org.eclipse.jface.viewers.IStructuredSelection;
import org.eclipse.jgit.lib.Repository;
import org.eclipse.jgit.revwalk.RevCommit;
import org.eclipse.jgit.revwalk.RevWalk;
import org.eclipse.jgit.lib.ReflogEntry;
import org.eclipse.ui.IWorkbenchPart;
import org.eclipse.ui.IWorkbenchWindow;
import org.eclipse.ui.PlatformUI;
import org.eclipse.ui.handlers.HandlerUtil;
/**
* Common helper methods for RefLogView command handlers
*/
abstract class AbstractReflogCommandHandler extends AbstractHandler {
protected IWorkbenchPart getPart(ExecutionEvent event)
throws ExecutionException {
return HandlerUtil.getActivePartChecked(event);
}
protected Repository getRepository(ExecutionEvent event) throws ExecutionException {
IWorkbenchPart part = getPart(event);
if (!(part instanceof ReflogView))
throw new ExecutionException(
UIText.AbstractReflogCommandHandler_NoInput);
return (((ReflogView) part).getRepository());
}
protected ReflogView getView() {
IWorkbenchWindow window = PlatformUI.getWorkbench()
.getActiveWorkbenchWindow();
if (window == null)
return null;
if (window.getActivePage() == null)
return null;
IWorkbenchPart part = window.getActivePage().getActivePart();
if (!(part instanceof ReflogView))
return null;
return (ReflogView) part;
}
/**
* @param event
* @param repo
* @return commit selected in Reflog View
* @throws ExecutionException
*/
protected RevCommit getSelectedCommit(ExecutionEvent event, Repository repo)
throws ExecutionException {
ReflogEntry entry = (ReflogEntry) ((IStructuredSelection) HandlerUtil
.getCurrentSelectionChecked(event)).getFirstElement();
if (entry == null)
return null;
RevCommit commit = null;
RevWalk w = new RevWalk(repo);
try {
commit = w.parseCommit(entry.getNewId());
} catch (IOException e) {
throw new ExecutionException(e.getMessage(), e);
} finally {
w.release();
}
return commit;
}
}