package net.kreatious.pianoleopard.midi.event;
   
   /**
    * Represents a slot that uniquely identifies which interval events within the
    * same channel belong to. Intended to be used as a key for maps.
    * <p>
    * A slot contains a channel and a key.
    *
    * @author Jay-R Studer
   */
  public class Slot {
      private final int channel;
      private final Object key;
  
      Slot(int channel, Object key) {
          this.channel = channel;
          this.key = key;
      }
  
      @Override
      public boolean equals(Object obj) {
          if (obj == this) {
              return true;
          }
          if (!(obj instanceof Slot)) {
              return false;
          }
          final Slot other = (Slot) obj;
          return channel == other.channel && key.equals(other.key);
      }
  
      @Override
      public int hashCode() {
          return 31 * channel + key.hashCode();
      }
  
      @Override
      public String toString() {
          return key.toString();
      }
  }