content: /*
   * Copyright (C) 2019  Ziwei Huang
   *
   * 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 cn.forward.tiledmapview.core;
  
  /**
   * @author ziwei huang
   */
  public interface ILayerGroup<T extends ILayer> extends ILayer {
  
      public void add(T layer);
  
      public void add(int index, T layer);
  
      public void clear();
  
      public T get(int index);
  
      public int size();
  
      public boolean remove(T layer);
  
      public T removeAt(int index);
  
      public int indexOf(T layer);
  
      public boolean contains(T layer);
  }
  
  
  