br.com.objectos.way.io.Dimension Maven / Gradle / Ivy

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/*
 * Copyright 2013 Objectos, Fábrica de Software LTDA.
 *
 * Licensed under the Apache License, Version 2.0 (the "License"); you may not
 * use this file except in compliance with the License. You may obtain a copy of
 * the License at
 *
 * http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
 * WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
 * License for the specific language governing permissions and limitations under
 * the License.
 */
package br.com.objectos.way.io;

/**
 * @author [email protected] (Marcio Endo)
 */
abstract class Dimension {

  private static final Dimension UNDEFINED = new Undefined();

  public static Dimension undefined() {
    return UNDEFINED;
  }

  public static Dimension of(int size, Unit unit) {
    return new Defined(size, unit);
  }

  boolean isDefined() {
    return false;
  }

  int getSize() {
    return 0;
  }

  Unit getUnit() {
    return Unit.CHAR;
  }

  private static class Defined extends Dimension {

    private final int size;

    private final Unit unit;

    Defined(int size, Unit unit) {
      this.size = size;
      this.unit = unit;
    }

    @Override
    boolean isDefined() {
      return true;
    }

    @Override
    public int getSize() {
      return size;
    }

    @Override
    public Unit getUnit() {
      return unit;
    }

  }

  private static class Undefined extends Dimension {}

}