/*
* #%L
* gitools-core
* %%
* Copyright (C) 2013 Universitat Pompeu Fabra - Biomedical Genomics group
* %%
* This program is free software: you can redistribute it and/or modify
* it under the terms of the GNU General Public License as
* published by the Free Software Foundation, either version 3 of the
* License, or (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public
* License along with this program. If not, see
* <http://www.gnu.org/licenses/gpl-3.0.html>.
* #L%
*/
package org.gitools.matrix.model.iterable;
import org.gitools.api.analysis.IProgressMonitor;
import java.util.Iterator;
import java.util.concurrent.CancellationException;
public class MonitorMatrixIterable<T> extends AbstractChainIterable<T, T> {
private IProgressMonitor monitor;
private String title;
public MonitorMatrixIterable(AbstractIterable<T> parentIterable, IProgressMonitor monitor, String title) {
super(parentIterable);
this.monitor = monitor;
this.title = title;
}
@Override
public Iterator<T> iterator() {
if (title != null) {
monitor.begin(title, size());
}
return new MonitorIterator<>(newParentIterator());
}
private class MonitorIterator<T> extends AbstractChainIterator<T, T> {
public MonitorIterator(Iterator<T> parentIterator) {
super(parentIterator);
}
@Override
public T next() {
if (monitor.isCancelled()) {
throw new CancellationException();
}
monitor.worked(1);
return parentNext();
}
}
}