| /* |
| * Copyright (c) 2014 Eike Stepper (Loehne, Germany) and others. |
| * All rights reserved. This program and the accompanying materials |
| * are made available under the terms of the Eclipse Public License v2.0 |
| * which accompanies this distribution, and is available at |
| * http://www.eclipse.org/legal/epl-v20.html |
| * |
| * Contributors: |
| * Eike Stepper - initial API and implementation |
| */ |
| package org.eclipse.oomph.internal.util.table; |
| |
| import org.eclipse.oomph.util.AbstractIterator; |
| import org.eclipse.oomph.util.ComposedIterator; |
| import org.eclipse.oomph.util.PredicateIterator; |
| import org.eclipse.oomph.util.Predicates; |
| |
| import java.util.ArrayList; |
| import java.util.HashSet; |
| import java.util.Iterator; |
| import java.util.List; |
| import java.util.Set; |
| |
| /** |
| * @author Eike Stepper |
| */ |
| final class ComposedRange extends AbstractRange |
| { |
| final Table table; |
| |
| final List<Range> inclusions = new ArrayList<Range>(); |
| |
| final List<Range> exclusions = new ArrayList<Range>(); |
| |
| public ComposedRange(ComposedRange source) |
| { |
| table = source.table; |
| inclusions.addAll(source.inclusions); |
| exclusions.addAll(source.exclusions); |
| } |
| |
| public ComposedRange(Table table, Range... ranges) |
| { |
| this.table = table; |
| addRanges(ranges); |
| } |
| |
| @Override |
| public Range addRanges(Range... ranges) |
| { |
| addRanges(inclusions, ranges); |
| return this; |
| } |
| |
| @Override |
| public Range subtractRanges(Range... ranges) |
| { |
| addRanges(exclusions, ranges); |
| return this; |
| } |
| |
| @Override |
| public Table table() |
| { |
| return table; |
| } |
| |
| @Override |
| public Iterator<Cell> iterator() |
| { |
| if (inclusions.isEmpty()) |
| { |
| return AbstractIterator.empty(); |
| } |
| |
| Iterator<Cell> iterator = ComposedIterator.fromIterables(inclusions); |
| if (!exclusions.isEmpty()) |
| { |
| Set<Cell> excludedCells = new HashSet<Cell>(); |
| for (Range range : exclusions) |
| { |
| for (Cell cell : range) |
| { |
| excludedCells.add(cell); |
| } |
| } |
| |
| iterator = new PredicateIterator<Cell>(Predicates.excluded(excludedCells), iterator); |
| } |
| |
| return new PredicateIterator<Cell>(Predicates.unique(), iterator); |
| } |
| |
| private static void addRanges(List<Range> list, Range... ranges) |
| { |
| for (int i = 0; i < ranges.length; i++) |
| { |
| Range range = ranges[i]; |
| list.add(range); |
| } |
| } |
| } |