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/*******************************************************************************
* Copyright (C) 2008, Shawn O. Pearce <spearce@spearce.org>
* Copyright (C) 2012, Robin Stocker <robin@nibor.org>
*
* 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;
import java.io.IOException;
import java.util.Set;
import org.eclipse.egit.ui.Activator;
import org.eclipse.egit.ui.internal.UIText;
import org.eclipse.jface.viewers.IStructuredContentProvider;
import org.eclipse.jface.viewers.Viewer;
import org.eclipse.jgit.lib.Repository;
import org.eclipse.jgit.revwalk.RevCommit;
import org.eclipse.jgit.treewalk.TreeWalk;
import org.eclipse.jgit.treewalk.filter.PathFilterGroup;
import org.eclipse.jgit.treewalk.filter.TreeFilter;
import org.eclipse.osgi.util.NLS;
/**
* Content provider for {@link FileDiff} objects
*/
public class FileDiffContentProvider implements IStructuredContentProvider {
static final int INTERESTING_MARK_TREE_FILTER_INDEX = 0;
private TreeWalk walk;
private RevCommit commit;
private FileDiff[] diff;
private TreeFilter markTreeFilter = TreeFilter.ALL;
private Repository repo;
public void inputChanged(final Viewer newViewer, final Object oldInput,
final Object newInput) {
if (newInput != null) {
repo = ((CommitFileDiffViewer) newViewer).getRepository();
walk = ((CommitFileDiffViewer) newViewer).getTreeWalk();
commit = (RevCommit) newInput;
} else {
repo = null;
walk = null;
commit = null;
}
diff = null;
}
/**
* Set the paths which are interesting and should be highlighted in the view.
* @param interestingPaths
*/
void setInterestingPaths(Set<String> interestingPaths) {
if (interestingPaths != null)
this.markTreeFilter = PathFilterGroup.createFromStrings(interestingPaths);
else
this.markTreeFilter = TreeFilter.ALL;
// FileDiffs need to be updated
this.diff = null;
}
public Object[] getElements(final Object inputElement) {
if (diff == null && walk != null && commit != null)
try {
diff = FileDiff.compute(repo, walk, commit, markTreeFilter);
} catch (IOException err) {
Activator.handleError(NLS.bind(UIText.FileDiffContentProvider_errorGettingDifference,
commit.getId()), err, false);
}
return diff != null ? diff : new Object[0];
}
public void dispose() {
// Nothing.
}
}
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