Basic preset stuff and onTransitionEnd message

[SugarCubes.git] / _Presets.pde

diff --git a/_Presets.pde b/_Presets.pde
new file mode 100644 (file)
index 0000000..ada8bb1
--- /dev/null
+++ b/_Presets.pde
@@ -0,0 +1,133 @@
+interface PresetListener {
+  public void onPresetLoaded(Preset preset);
+  public void onPresetDirty(Preset preset);
+  public void onPresetStored(Preset preset);
+}
+
+class PresetManager {
+  
+  public static final int NUM_PRESETS = 8;
+  public static final String FILENAME = "data/presets.txt";
+  public static final String DELIMITER = "\t";
+  
+  private final Preset[] presets = new Preset[NUM_PRESETS];
+  private final List<PresetListener> listeners = new ArrayList<PresetListener>();
+  
+  private LXPattern loadedPreset = null;
+  
+  PresetManager() {
+    for (int i = 0; i < presets.length; ++i) {
+      presets[i] = new Preset(this, i);
+    }
+    String[] values = loadStrings(FILENAME);
+    if (values == null) {
+      write();
+    } else {
+      int i = 0;
+      for (String serialized : values) {
+        presets[i++].load(serialized);
+        if (i >= NUM_PRESETS) {
+          break;
+        }
+      }
+    }
+  }
+  
+  public void addListener(PresetListener listener) {
+    listeners.add(listener);
+  }
+
+  public void select(int index) {
+    presets[index].select();
+  }
+
+  public void store(int index) {
+    presets[index].store(midiEngine.getFocusedPattern());
+  }
+  
+  public void onPresetLoaded(Preset preset, LXPattern pattern) {
+    for (PresetListener listener : listeners) {
+      listener.onPresetLoaded(preset);
+    }
+  }
+  
+  public void write() {
+    String[] lines = new String[NUM_PRESETS];
+    int i = 0;
+    for (Preset preset : presets) {
+      lines[i++] = preset.serialize(); 
+    }
+    saveStrings(FILENAME, lines);
+  }
+}
+
+class Preset {
+  
+  final PresetManager manager;
+  final int index;
+  
+  String className;
+  final Map<String, Float> parameters = new HashMap<String, Float>();
+  
+  Preset(PresetManager manager, int index) {
+    this.manager = manager;
+    this.index = index;
+  }
+  
+  public void load(String serialized) {
+    className = null;
+    parameters.clear();
+    try {
+      String[] parts = serialized.split(PresetManager.DELIMITER);
+      className = parts[0];
+      int i = 1;
+      while (i < parts.length - 1) {
+        parameters.put(parts[i], Float.parseFloat(parts[i+1]));
+        i += 2;
+      }
+    } catch (Exception x) {
+      className = null;
+      parameters.clear();
+    }
+  }
+  
+  public String serialize() {
+    if (className == null) {
+      return "null";
+    }
+    String val = className + PresetManager.DELIMITER;
+    for (String pKey : parameters.keySet()) {
+      val += pKey + PresetManager.DELIMITER + parameters.get(pKey) + PresetManager.DELIMITER;
+    }
+    return val;
+  }
+  
+  public void store(LXPattern pattern) {
+    className = null;
+    parameters.clear();
+    className = pattern.getClass().getName();
+    for (LXParameter p : pattern.getParameters()) {
+      parameters.put(p.getLabel(), p.getValuef());
+    }
+    manager.write();
+  }
+  
+  public void select() {
+    Engine.Deck deck = midiEngine.getFocusedDeck();
+    for (LXPattern pattern : deck.getPatterns()) {
+      if (pattern.getClass().getName().equals(className)) {
+        for (String pLabel : parameters.keySet()) {
+          for (LXParameter p : pattern.getParameters()) {
+            if (p.getLabel().equals(pLabel)) {
+              p.setValue(parameters.get(pLabel));
+            }
+          }
+        }
+        deck.goPattern(pattern);
+        manager.onPresetLoaded(this, pattern);
+        break;
+      }
+    }    
+  }
+}
+