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/*******************************************************************************
* Copyright (c) 2006 IBM Corporation 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:
* IBM Corporation - initial API and implementation
*******************************************************************************/
package org.eclipse.team.internal.core.history;
import java.util.ArrayList;
import org.eclipse.core.resources.IFile;
import org.eclipse.core.resources.IFileState;
import org.eclipse.core.runtime.CoreException;
import org.eclipse.core.runtime.IProgressMonitor;
import org.eclipse.team.core.TeamException;
import org.eclipse.team.core.history.IFileRevision;
import org.eclipse.team.core.history.provider.FileHistory;
import org.eclipse.team.internal.core.Messages;
public class LocalFileHistory extends FileHistory {
protected IFile file;
//used to hold all revisions (changes based on filtering)
protected IFileRevision[] revisions;
private final boolean includeCurrent;
/*
* Creates a new CVSFile history that will fetch remote revisions by default.
*/
public LocalFileHistory(IFile file, boolean includeCurrent) {
this.file = file;
this.includeCurrent = includeCurrent;
}
/* (non-Javadoc)
* @see org.eclipse.team.core.history.IFileHistory#getContributors(org.eclipse.team.core.history.IFileRevision)
*/
public IFileRevision[] getContributors(IFileRevision revision) {
IFileRevision[] revisions = getFileRevisions();
//the predecessor is the file with a timestamp that is the largest timestamp
//from the set of all timestamps smaller than the root file's timestamp
IFileRevision fileRevision = null;
for (int i = 0; i < revisions.length; i++) {
if (((LocalFileRevision) revisions[i]).isPredecessorOf(revision)) {
//no revision has been set as of yet
if (fileRevision == null)
fileRevision = revisions[i];
//this revision is a predecessor - now check to see if it comes
//after the current predecessor, if it does make it the current predecessor
if (fileRevision != null && revisions[i].getTimestamp() > fileRevision.getTimestamp()) {
fileRevision = revisions[i];
}
}
}
if (fileRevision == null)
return new IFileRevision[0];
return new IFileRevision[] {fileRevision};
}
/* (non-Javadoc)
* @see org.eclipse.team.core.history.IFileHistory#getFileRevision(java.lang.String)
*/
public IFileRevision getFileRevision(String id) {
if (revisions != null) {
for (int i = 0; i < revisions.length; i++) {
IFileRevision revision = revisions[i];
if (revision.getContentIdentifier().equals(id)) {
return revision;
}
}
}
return null;
}
/* (non-Javadoc)
* @see org.eclipse.team.core.history.IFileHistory#getFileRevisions()
*/
public IFileRevision[] getFileRevisions() {
if (revisions == null)
return new IFileRevision[0];
return revisions;
}
/* (non-Javadoc)
* @see org.eclipse.team.core.history.IFileHistory#getTargets(org.eclipse.team.core.history.IFileRevision)
*/
public IFileRevision[] getTargets(IFileRevision revision) {
IFileRevision[] revisions = getFileRevisions();
ArrayList directDescendents = new ArrayList();
for (int i = 0; i < revisions.length; i++) {
if (((LocalFileRevision) revisions[i]).isDescendentOf(revision)) {
directDescendents.add(revisions[i]);
}
}
return (IFileRevision[]) directDescendents.toArray(new IFileRevision[directDescendents.size()]);
}
/**
* Refreshes the revisions for this local file.
*
* @param monitor a progress monitor
* @throws TeamException
*/
public void refresh(IProgressMonitor monitor) throws TeamException {
monitor.beginTask(Messages.LocalFileHistory_RefreshLocalHistory/*, file.getProjectRelativePath().toString())*/, 300);
try {
// Include the file's current state if and only if the file exists.
LocalFileRevision currentRevision =
(includeRevisionForFile() ? new LocalFileRevision(file) : null);
IFileState[] fileStates = file.getHistory(monitor);
int numRevisions = fileStates.length + (currentRevision != null ? 1 : 0);
revisions = new LocalFileRevision[numRevisions];
for (int i = 0; i < fileStates.length; i++) {
revisions[i] = new LocalFileRevision(fileStates[i]);
}
if (currentRevision != null)
revisions[fileStates.length] = currentRevision;
} catch (CoreException e) {
throw TeamException.asTeamException(e);
} finally {
monitor.done();
}
}
private boolean includeRevisionForFile() {
return file.exists() && includeCurrent;
}
}
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