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/*******************************************************************************
* Copyright (C) 2008, 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.history;
import java.io.IOException;
import org.eclipse.core.runtime.IProgressMonitor;
import org.eclipse.core.runtime.IStatus;
import org.eclipse.core.runtime.Status;
import org.eclipse.core.runtime.jobs.Job;
import org.eclipse.egit.ui.Activator;
import org.eclipse.egit.ui.UIText;
class GenerateHistoryJob extends Job {
private static final int BATCH_SIZE = 256;
private final GitHistoryPage page;
private final SWTCommitList allCommits;
private int lastUpdateCnt;
private long lastUpdateAt;
GenerateHistoryJob(final GitHistoryPage ghp, final SWTCommitList list) {
super(UIText.HistoryPage_refreshJob);
page = ghp;
allCommits = list;
}
@Override
protected IStatus run(final IProgressMonitor monitor) {
IStatus status = Status.OK_STATUS;
try {
try {
for (;;) {
final int oldsz = allCommits.size();
allCommits.fillTo(oldsz + BATCH_SIZE - 1);
if (monitor.isCanceled() || oldsz == allCommits.size())
break;
final long now = System.currentTimeMillis();
if (now - lastUpdateAt < 2000 && lastUpdateCnt > 0)
continue;
updateUI();
lastUpdateAt = now;
}
} catch (IOException e) {
status = new Status(IStatus.ERROR, Activator.getPluginId(),
UIText.GenerateHistoryJob_errorComputingHistory, e);
}
if (monitor.isCanceled())
return Status.CANCEL_STATUS;
updateUI();
} finally {
monitor.done();
}
return status;
}
void updateUI() {
if (allCommits.size() == lastUpdateCnt)
return;
final SWTCommit[] asArray = new SWTCommit[allCommits.size()];
allCommits.toArray(asArray);
page.showCommitList(this, allCommits, asArray);
lastUpdateCnt = allCommits.size();
}
}
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