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/*******************************************************************************
* Copyright (C) 2007, Robin Rosenberg <robin.rosenberg@dewire.com>
* Copyright (C) 2007, Shawn O. Pearce <spearce@spearce.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.decorators;
import java.io.IOException;
import java.util.Map;
import java.util.WeakHashMap;
import org.eclipse.core.resources.IResource;
import org.eclipse.core.runtime.CoreException;
import org.eclipse.core.runtime.IProgressMonitor;
import org.eclipse.egit.ui.Activator;
import org.eclipse.egit.ui.internal.UIText;
import org.eclipse.egit.ui.internal.trace.GitTraceLocation;
import org.eclipse.jface.text.IDocument;
import org.eclipse.jgit.lib.Repository;
import org.eclipse.ui.IEditorInput;
import org.eclipse.ui.ide.ResourceUtil;
import org.eclipse.ui.texteditor.ITextEditor;
import org.eclipse.ui.texteditor.quickdiff.IQuickDiffReferenceProvider;
/**
* This class provides input for the Eclipse Quick Diff feature.
*/
public class GitQuickDiffProvider implements IQuickDiffReferenceProvider {
private String id;
private GitDocument document;
private IResource resource;
static Map<Repository,String> baseline = new WeakHashMap<>();
/**
* Create the GitQuickDiffProvider instance
*/
public GitQuickDiffProvider() {
if (GitTraceLocation.QUICKDIFF.isActive())
GitTraceLocation.getTrace().traceEntry(GitTraceLocation.QUICKDIFF.getLocation());
}
@Override
public void dispose() {
if (GitTraceLocation.QUICKDIFF.isActive())
GitTraceLocation.getTrace().traceEntry(GitTraceLocation.QUICKDIFF.getLocation());
if (document != null)
document.dispose();
}
@Override
public String getId() {
return id;
}
@Override
public IDocument getReference(IProgressMonitor monitor)
throws CoreException {
if (GitTraceLocation.QUICKDIFF.isActive())
GitTraceLocation.getTrace().trace(
GitTraceLocation.QUICKDIFF.getLocation(),
"(GitQuickDiffProvider) file: " + resource); //$NON-NLS-1$
if (resource == null)
return null;
// Document must only be created once
if (document == null)
document = createDocument(resource);
return document;
}
private static GitDocument createDocument(IResource resource) {
try {
return GitDocument.create(resource);
} catch (IOException e) {
Activator.error(UIText.QuickDiff_failedLoading, e);
return null;
}
}
@Override
public boolean isEnabled() {
return resource != null
&& org.eclipse.egit.core.internal.util.ResourceUtil
.isSharedWithGit(resource.getProject());
}
@Override
public void setActiveEditor(ITextEditor editor) {
if (GitTraceLocation.QUICKDIFF.isActive())
GitTraceLocation.getTrace().traceEntry(
GitTraceLocation.QUICKDIFF.getLocation(), editor.getTitle());
IEditorInput editorInput = editor.getEditorInput();
resource = ResourceUtil.getResource(editorInput);
}
@Override
public void setId(String id) {
this.id = id;
}
/**
* Set a new baseline for quickdiff
*
* @param repository
* @param baseline any commit reference, ref, symref or sha-1
* @throws IOException
*/
public static void setBaselineReference(final Repository repository, final String baseline) throws IOException {
GitQuickDiffProvider.baseline.put(repository, baseline);
GitDocument.refreshRelevant(repository);
}
}
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