| 1 | /* |
| 2 | * Copyright (c) 2005 The PseudoQ Project. |
| 3 | * |
| 4 | * This file is part of PseudoQ. |
| 5 | * |
| 6 | * PseudoQ is free software; you can redistribute it and/or modify |
| 7 | * it under the terms of the GNU Lesser General Public License as published by |
| 8 | * the Free Software Foundation; either version 2.1 of the License, or |
| 9 | * (at your option) any later version. |
| 10 | * |
| 11 | * PseudoQ is distributed in the hope that it will be useful, |
| 12 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 13 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| 14 | * GNU Lesser General Public License for more details. |
| 15 | * |
| 16 | * You should have received a copy of the GNU Lesser General Public License |
| 17 | * along with PseudoQ; if not, write to the Free Software |
| 18 | * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA |
| 19 | */ |
| 20 | |
| 21 | package net.sourceforge.pseudoq.solver; |
| 22 | |
| 23 | import net.sourceforge.pseudoq.model.Coordinate; |
| 24 | import net.sourceforge.pseudoq.model.Region; |
| 25 | |
| 26 | /** |
| 27 | * Counts the number of values that have been placed within a region. |
| 28 | * @author <a href="http://sourceforge.net/users/stevensa">Andrew Stevens</a> |
| 29 | */ |
| 30 | public class RegionValueCounter implements Counter { |
| 31 | private int count = 0; |
| 32 | private Region region; |
| 33 | |
| 34 | /** |
| 35 | * Creates a new instance of RegionValueCounter. |
| 36 | * @param region The region to monitor. |
| 37 | */ |
| 38 | public RegionValueCounter(Region region) { |
| 39 | if (region == null) { |
| 40 | throw new IllegalArgumentException("Can't create counter for null region"); |
| 41 | } |
| 42 | |
| 43 | this.region = region; |
| 44 | } |
| 45 | |
| 46 | public void increment() { |
| 47 | count++; |
| 48 | } |
| 49 | |
| 50 | public void reset() { |
| 51 | count = 0; |
| 52 | } |
| 53 | |
| 54 | public int getCount() { |
| 55 | return count; |
| 56 | } |
| 57 | |
| 58 | public void place(Coordinate coord, int value) { |
| 59 | if (coord == null) { |
| 60 | throw new IllegalArgumentException("Can't place a value with null coordinate"); |
| 61 | } |
| 62 | assert (region != null); |
| 63 | |
| 64 | if (region.contains(coord)) { |
| 65 | // don't care what the value is |
| 66 | increment(); |
| 67 | } |
| 68 | } |
| 69 | |
| 70 | /** |
| 71 | * Setter for property count. |
| 72 | * @param count New value of property count. |
| 73 | */ |
| 74 | public void setCount(int count) { |
| 75 | this.count = count; |
| 76 | } |
| 77 | |
| 78 | } |