| 1 | package net.digitaltsunami.tmeter.level; |
| 2 | |
| 3 | import java.util.HashSet; |
| 4 | import java.util.Set; |
| 5 | |
| 6 | /** |
| 7 | * Set of {@link TimerLevel}s implementing the {@link TimerLevelCollection}. |
| 8 | * |
| 9 | * @author dhagberg |
| 10 | * |
| 11 | */ |
| 12 | public class TimerLevelSet implements TimerLevelCollection { |
| 13 | |
| 14 | /** |
| 15 | * Set of {@link TimerLevel} instances used as backing store for this collection. |
| 16 | */ |
| 17 | private final Set<TimerLevel> levelSet = new HashSet<TimerLevel>(); |
| 18 | |
| 19 | /** |
| 20 | * Add one to many {@link TimerLevel} instances based on the rules specified |
| 21 | * in {@link TimerLevelCollection}. |
| 22 | * |
| 23 | * @param levels one to many {@link TimerLevel}s to add the set. |
| 24 | */ |
| 25 | public TimerLevelSet(TimerLevel... levels) { |
| 26 | for (TimerLevel level : levels) { |
| 27 | addLevel(level); |
| 28 | } |
| 29 | } |
| 30 | |
| 31 | /* (non-Javadoc) |
| 32 | * @see net.digitaltsunami.tmeter.level.TimerLevelCollection#addLevel(net.digitaltsunami.tmeter.level.TimerLevel) |
| 33 | */ |
| 34 | @Override |
| 35 | public TimerLevel addLevel(TimerLevel newLevel) { |
| 36 | if (newLevel == null) { |
| 37 | return null; |
| 38 | } |
| 39 | switch (newLevel.getLevelType()) { |
| 40 | |
| 41 | case CATEGORY: |
| 42 | for (TimerLevel level : levelSet) { |
| 43 | if (level.isEnabled(newLevel)) { |
| 44 | return level; |
| 45 | } |
| 46 | } |
| 47 | levelSet.add(newLevel); |
| 48 | return null; |
| 49 | |
| 50 | case THRESHOLD: |
| 51 | TimerLevel oldLevel = null; |
| 52 | for (TimerLevel level : levelSet) { |
| 53 | if (level.getLevelType() == TimerLevelType.THRESHOLD && level.getGroup() == newLevel.getGroup()) { |
| 54 | levelSet.add(newLevel); |
| 55 | levelSet.remove(level); |
| 56 | oldLevel = level; |
| 57 | // Existing level found and set modified. Must leave iteration. |
| 58 | break; |
| 59 | } |
| 60 | } |
| 61 | levelSet.add(newLevel); |
| 62 | return oldLevel; |
| 63 | case SET: |
| 64 | if (newLevel instanceof TimerLevelCollection) { |
| 65 | for(TimerLevel levelElem : ((TimerLevelCollection)newLevel).getLevels()) { |
| 66 | this.addLevel(levelElem); |
| 67 | } |
| 68 | } |
| 69 | else { |
| 70 | throw new IllegalArgumentException( |
| 71 | "TimerLevels of type Set should implmement TimerLevelCollection"); |
| 72 | } |
| 73 | } |
| 74 | return null; |
| 75 | } |
| 76 | |
| 77 | /* (non-Javadoc) |
| 78 | * @see net.digitaltsunami.tmeter.level.TimerLevelCollection#addLevels(net.digitaltsunami.tmeter.level.TimerLevel[]) |
| 79 | */ |
| 80 | @Override |
| 81 | public boolean addLevels(TimerLevel... newLevels) { |
| 82 | boolean levelAdded = false; |
| 83 | for (TimerLevel newLevel : newLevels) { |
| 84 | levelAdded |= addLevel(newLevel) == null; |
| 85 | } |
| 86 | return levelAdded; |
| 87 | } |
| 88 | |
| 89 | /* (non-Javadoc) |
| 90 | * @see net.digitaltsunami.tmeter.level.TimerLevelCollection#removeLevel(net.digitaltsunami.tmeter.level.TimerLevel) |
| 91 | */ |
| 92 | @Override |
| 93 | public boolean removeLevel(TimerLevel level) { |
| 94 | return levelSet.remove(level); |
| 95 | } |
| 96 | |
| 97 | /* (non-Javadoc) |
| 98 | * @see net.digitaltsunami.tmeter.level.TimerLevelCollection#clear() |
| 99 | */ |
| 100 | @Override |
| 101 | public void clear() { |
| 102 | levelSet.clear(); |
| 103 | } |
| 104 | |
| 105 | /* (non-Javadoc) |
| 106 | * @see net.digitaltsunami.tmeter.level.TimerLevel#isEnabled(net.digitaltsunami.tmeter.level.TimerLevel) |
| 107 | */ |
| 108 | public boolean isEnabled(TimerLevel oLevel) { |
| 109 | for (TimerLevel level : levelSet) { |
| 110 | if (level.isEnabled(oLevel)) { |
| 111 | return true; |
| 112 | } |
| 113 | } |
| 114 | return false; |
| 115 | } |
| 116 | |
| 117 | /* (non-Javadoc) |
| 118 | * @see net.digitaltsunami.tmeter.level.TimerLevel#isEnabled(net.digitaltsunami.tmeter.level.TimerLevel[]) |
| 119 | */ |
| 120 | public boolean isEnabled(TimerLevel... oLevels) { |
| 121 | for (TimerLevel oLevel : oLevels) { |
| 122 | if (isEnabled(oLevel)) { |
| 123 | return true; |
| 124 | } |
| 125 | } |
| 126 | return false; |
| 127 | } |
| 128 | |
| 129 | /* (non-Javadoc) |
| 130 | * @see net.digitaltsunami.tmeter.level.TimerLevel#getLevelType() |
| 131 | */ |
| 132 | public TimerLevelType getLevelType() { |
| 133 | return TimerLevelType.SET; |
| 134 | } |
| 135 | |
| 136 | /* (non-Javadoc) |
| 137 | * @see net.digitaltsunami.tmeter.level.TimerLevelCollection#getLevels() |
| 138 | */ |
| 139 | public Set<TimerLevel> getLevels() { |
| 140 | // Return a copy of the current level set. |
| 141 | return new HashSet<TimerLevel>(levelSet); |
| 142 | } |
| 143 | |
| 144 | /* (non-Javadoc) |
| 145 | * @see net.digitaltsunami.tmeter.level.TimerLevel#getGroup() |
| 146 | */ |
| 147 | @Override |
| 148 | public Object getGroup() { |
| 149 | return this; |
| 150 | } |
| 151 | |
| 152 | } |