| 1 | interface PresetListener { |
| 2 | public void onPresetLoaded(Preset preset); |
| 3 | public void onPresetDirty(Preset preset); |
| 4 | public void onPresetStored(Preset preset); |
| 5 | public void onPresetUnloaded(); |
| 6 | } |
| 7 | |
| 8 | class PresetManager implements LXParameter.Listener { |
| 9 | |
| 10 | public static final int NUM_PRESETS = 8; |
| 11 | public static final String FILENAME = "data/presets.txt"; |
| 12 | public static final String DELIMITER = "\t"; |
| 13 | |
| 14 | private final Preset[] presets = new Preset[NUM_PRESETS]; |
| 15 | private final List<PresetListener> listeners = new ArrayList<PresetListener>(); |
| 16 | |
| 17 | private Preset loadedPreset = null; |
| 18 | private LXPattern loadedPattern = null; |
| 19 | |
| 20 | PresetManager() { |
| 21 | for (int i = 0; i < presets.length; ++i) { |
| 22 | presets[i] = new Preset(this, i); |
| 23 | } |
| 24 | String[] values = loadStrings(FILENAME); |
| 25 | if (values == null) { |
| 26 | write(); |
| 27 | } else { |
| 28 | int i = 0; |
| 29 | for (String serialized : values) { |
| 30 | presets[i++].load(serialized); |
| 31 | if (i >= NUM_PRESETS) { |
| 32 | break; |
| 33 | } |
| 34 | } |
| 35 | } |
| 36 | for (Engine.Deck deck : lx.engine.getDecks()) { |
| 37 | deck.addListener(new Engine.AbstractListener() { |
| 38 | public void patternDidChange(Engine.Deck deck, LXPattern pattern) { |
| 39 | if (midiEngine.getFocusedDeck() == deck) { |
| 40 | if (pattern != loadedPattern) { |
| 41 | onPresetDirty(); |
| 42 | } |
| 43 | } |
| 44 | } |
| 45 | }); |
| 46 | } |
| 47 | } |
| 48 | |
| 49 | public void setMidiEngine(MidiEngine midiEngine) { |
| 50 | midiEngine.addListener(new MidiEngineListener() { |
| 51 | public void onFocusedDeck(int deckIndex) { |
| 52 | loadedPreset = null; |
| 53 | for (PresetListener listener : listeners) { |
| 54 | listener.onPresetUnloaded(); |
| 55 | } |
| 56 | } |
| 57 | }); |
| 58 | } |
| 59 | |
| 60 | public void addListener(PresetListener listener) { |
| 61 | listeners.add(listener); |
| 62 | } |
| 63 | |
| 64 | public void select(int index) { |
| 65 | presets[index].select(); |
| 66 | } |
| 67 | |
| 68 | public void store(int index) { |
| 69 | presets[index].store(midiEngine.getFocusedPattern()); |
| 70 | for (PresetListener listener : listeners) { |
| 71 | listener.onPresetStored(presets[index]); |
| 72 | } |
| 73 | select(index); |
| 74 | } |
| 75 | |
| 76 | public void onPresetLoaded(Preset preset, LXPattern pattern) { |
| 77 | if (loadedPattern != pattern) { |
| 78 | if (loadedPattern != null) { |
| 79 | for (LXParameter p : loadedPattern.getParameters()) { |
| 80 | ((LXListenableParameter) p).removeListener(this); |
| 81 | } |
| 82 | } |
| 83 | } |
| 84 | for (PresetListener listener : listeners) { |
| 85 | listener.onPresetLoaded(preset); |
| 86 | } |
| 87 | loadedPreset = preset; |
| 88 | loadedPattern = pattern; |
| 89 | for (LXParameter p : loadedPattern.getParameters()) { |
| 90 | ((LXListenableParameter) p).addListener(this); |
| 91 | } |
| 92 | } |
| 93 | |
| 94 | private void onPresetDirty() { |
| 95 | for (PresetListener listener : listeners) { |
| 96 | listener.onPresetDirty(loadedPreset); |
| 97 | } |
| 98 | } |
| 99 | |
| 100 | public void onParameterChanged(LXParameter p) { |
| 101 | onPresetDirty(); |
| 102 | } |
| 103 | |
| 104 | public void write() { |
| 105 | String[] lines = new String[NUM_PRESETS]; |
| 106 | int i = 0; |
| 107 | for (Preset preset : presets) { |
| 108 | lines[i++] = preset.serialize(); |
| 109 | } |
| 110 | saveStrings(FILENAME, lines); |
| 111 | } |
| 112 | } |
| 113 | |
| 114 | class Preset { |
| 115 | |
| 116 | final PresetManager manager; |
| 117 | final int index; |
| 118 | |
| 119 | String className; |
| 120 | final Map<String, Float> parameters = new HashMap<String, Float>(); |
| 121 | |
| 122 | Preset(PresetManager manager, int index) { |
| 123 | this.manager = manager; |
| 124 | this.index = index; |
| 125 | } |
| 126 | |
| 127 | public void load(String serialized) { |
| 128 | className = null; |
| 129 | parameters.clear(); |
| 130 | try { |
| 131 | String[] parts = serialized.split(PresetManager.DELIMITER); |
| 132 | className = parts[0]; |
| 133 | int i = 1; |
| 134 | while (i < parts.length - 1) { |
| 135 | parameters.put(parts[i], Float.parseFloat(parts[i+1])); |
| 136 | i += 2; |
| 137 | } |
| 138 | } catch (Exception x) { |
| 139 | className = null; |
| 140 | parameters.clear(); |
| 141 | } |
| 142 | } |
| 143 | |
| 144 | public String serialize() { |
| 145 | if (className == null) { |
| 146 | return "null"; |
| 147 | } |
| 148 | String val = className + PresetManager.DELIMITER; |
| 149 | for (String pKey : parameters.keySet()) { |
| 150 | val += pKey + PresetManager.DELIMITER + parameters.get(pKey) + PresetManager.DELIMITER; |
| 151 | } |
| 152 | return val; |
| 153 | } |
| 154 | |
| 155 | public void store(LXPattern pattern) { |
| 156 | className = null; |
| 157 | parameters.clear(); |
| 158 | className = pattern.getClass().getName(); |
| 159 | for (LXParameter p : pattern.getParameters()) { |
| 160 | parameters.put(p.getLabel(), p.getValuef()); |
| 161 | } |
| 162 | manager.write(); |
| 163 | } |
| 164 | |
| 165 | public void select() { |
| 166 | Engine.Deck deck = midiEngine.getFocusedDeck(); |
| 167 | for (LXPattern pattern : deck.getPatterns()) { |
| 168 | if (pattern.getClass().getName().equals(className)) { |
| 169 | for (String pLabel : parameters.keySet()) { |
| 170 | for (LXParameter p : pattern.getParameters()) { |
| 171 | if (p.getLabel().equals(pLabel)) { |
| 172 | p.setValue(parameters.get(pLabel)); |
| 173 | } |
| 174 | } |
| 175 | } |
| 176 | deck.goPattern(pattern); |
| 177 | manager.onPresetLoaded(this, pattern); |
| 178 | break; |
| 179 | } |
| 180 | } |
| 181 | } |
| 182 | } |
| 183 | |