/*
This file is part of RouteConverter.
RouteConverter 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 2 of the License, or
(at your option) any later version.
RouteConverter 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 RouteConverter; if not, write to the Free Software
Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
Copyright (C) 2007 Christian Pesch. All Rights Reserved.
*/
package slash.navigation.gui.events;
import java.util.List;
import static java.lang.Math.max;
import static java.lang.Math.min;
import static slash.navigation.gui.events.Range.asContinuousMonotonicallyDecreasingRanges;
import static slash.navigation.gui.events.Range.asContinuousMonotonicallyIncreasingRanges;
/**
* Allows to perform customizable {@link RangeOperation}s on indexed elements
* with another customizable operation after a continuous range.
* Used to reduce the number of notifications that Swing UI Models fire.
*
* @author Christian Pesch
* @see RangeOperation
*/
public class ContinousRange {
private final int[] indices;
private final RangeOperation operation;
public ContinousRange(int[] indices, RangeOperation operation) {
this.indices = indices;
this.operation = operation;
}
public void performMonotonicallyIncreasing() {
perform(asContinuousMonotonicallyIncreasingRanges(indices));
}
public void performMonotonicallyIncreasing(int maximumRangeLength) {
perform(asContinuousMonotonicallyIncreasingRanges(indices, maximumRangeLength));
}
public void performMonotonicallyDecreasing() {
perform(asContinuousMonotonicallyDecreasingRanges(indices));
}
private void perform(List<List<Integer>> ranges) {
for (List<Integer> range : ranges) {
for (Integer index : range) {
operation.performOnIndex(index);
if (operation.isInterrupted())
return;
}
if (range.size() == 0)
continue;
int firstValue = range.get(0);
int lastValue = range.get(range.size() - 1);
int from = min(firstValue, lastValue);
int to = max(firstValue, lastValue);
operation.performOnRange(from, to);
if (operation.isInterrupted())
return;
}
}
}