content: /**
   * Licensed to the Apache Software Foundation (ASF) under one
   * or more contributor license agreements.  See the NOTICE file
   * distributed with this work for additional information
   * regarding copyright ownership.  The ASF licenses this file
   * to you 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 org.apache.weex.ui.component.list.template;
  
  import com.alibaba.fastjson.JSONAware;
  
  /**
   * position render state, when render state change, position changed
   * Created by furture on 2018/2/2.
   */
  public class PositionRef extends  Number implements JSONAware {
  
      private CellRenderState renderState;
  
      public PositionRef(CellRenderState renderState) {
          this.renderState = renderState;
      }
  
      @Override
      public int intValue() {
          return getPosition();
      }
  
      @Override
      public long longValue() {
          return getPosition();
      }
  
      @Override
      public float floatValue() {
          return getPosition();
      }
  
      @Override
      public double doubleValue() {
          return getPosition();
      }
  
      private int getPosition(){
          if(renderState == null){
              return  -1;
          }
          return renderState.position;
      }
  
      @Override
      public String toString() {
          return String.valueOf(getPosition());
      }
  
      @Override
      public String toJSONString() {
          return String.valueOf(getPosition());
      }
  }
  