Class BaseAttributable

src/main/java/org/sfj/DrawDot.java:188–225

  }

  public static class BaseAttributable<E> implements Attributable<E> {
    protected final LinkedHashMap<String, Attribute> attributes = new LinkedHashMap<>();

    @Override
    @SuppressWarnings("unchecked")
    public E add(Attribute attr) {
      attributes.put(attr.name, attr);
      return (E) this;
    }

    protected void emit(List<String> opts) {
      for (Attribute a : attributes.values()) {
        a.emit(opts);
      }
    }

    @Override
    public String toString() {
      return "Attributable{" + "attributes=" + attributes + '}';
    }

    public Map<String, Attribute> getAttributes() {
      return attributes;
    }

    @Override
    public boolean equals(Object o) {
      if (this == o) { return true; }
      if (o == null || getClass() != o.getClass()) { return false; }
      BaseAttributable<?> that = (BaseAttributable<?>) o;
      return attributes.equals(that.attributes);
    }

    @Override
    public int hashCode() {
      return Objects.hash(attributes);
    }
  }

  interface Labeled<E> extends Attributable<E> {
    default E html(String html) {