TGMusicKeyUtils.java

package org.herac.tuxguitar.gui.util;

import org.herac.tuxguitar.gui.TuxGuitar;
import org.herac.tuxguitar.gui.system.language.LanguageLoader;

class TGMusicKeyNames implements LanguageLoader {

  private final String[] names = new String[12];
  private final String prefix;
  private final boolean sharp;

  public TGMusicKeyNames(boolean sharp, String prefix) {
    this.sharp = sharp;
    this.prefix = prefix;
    this.loadProperties();

    TuxGuitar.instance().getLanguageManager().addLoader(this);
  }

  public String[] getNames() {
    return this.names;
  }

  public void loadProperties() {
    TGMusicKeyUtils.loadKeyNames(this.names, this.prefix, this.sharp);
  }
}

public class TGMusicKeyUtils {

  private static final String[][] DEFAULT_KEY_NAMES = new String[][] {
      { "C", "C#", "Cb" }, { "D", "D#", "Db" }, { "E", "E#", "Eb" },
      { "F", "F#", "Fb" }, { "G", "G#", "Gb" }, { "A", "A#", "Ab" },
      { "B", "B#", "Bb" } };

  public static final String PREFIX_CHORD = "chord";

  public static final String PREFIX_FRETBOARD = "fretboard";

  public static final String PREFIX_MATRIX = "matrix";

  public static final String PREFIX_SCALE = "scale";

  public static final String PREFIX_TUNING = "tuning";

  public static String[] getFlatKeyNames(String prefix) {
    return new TGMusicKeyNames(false, prefix).getNames();
  }

  private static String getName(String prefix, int key, int signature) {
    String resource = ("key." + prefix + "." + key + "." + signature);
    return TuxGuitar.instance().getLanguageManager().getProperty(resource,
        DEFAULT_KEY_NAMES[key][signature]);
  }

  public static String[] getSharpKeyNames(String prefix) {
    return new TGMusicKeyNames(true, prefix).getNames();
  }

  private static void loadFlatKeyNames(String[] names, String prefix) {
    names[0] = getName(prefix, 0, 0);
    names[1] = getName(prefix, 1, 2);
    names[2] = getName(prefix, 1, 0);
    names[3] = getName(prefix, 2, 2);
    names[4] = getName(prefix, 2, 0);
    names[5] = getName(prefix, 3, 0);
    names[6] = getName(prefix, 4, 2);
    names[7] = getName(prefix, 4, 0);
    names[8] = getName(prefix, 5, 2);
    names[9] = getName(prefix, 5, 0);
    names[10] = getName(prefix, 6, 2);
    names[11] = getName(prefix, 6, 0);
  }

  protected static void loadKeyNames(String[] names, String prefix,
      boolean sharp) {
    if (sharp) {
      loadSharpKeyNames(names, prefix);
    } else {
      loadFlatKeyNames(names, prefix);
    }
  }

  private static void loadSharpKeyNames(String[] names, String prefix) {
    names[0] = getName(prefix, 0, 0);
    names[1] = getName(prefix, 0, 1);
    names[2] = getName(prefix, 1, 0);
    names[3] = getName(prefix, 1, 1);
    names[4] = getName(prefix, 2, 0);
    names[5] = getName(prefix, 3, 0);
    names[6] = getName(prefix, 3, 1);
    names[7] = getName(prefix, 4, 0);
    names[8] = getName(prefix, 4, 1);
    names[9] = getName(prefix, 5, 0);
    names[10] = getName(prefix, 5, 1);
    names[11] = getName(prefix, 6, 0);
  }
}