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.binding;
  
  import android.os.AsyncTask;
  
  import org.apache.weex.ui.component.WXComponent;
  import org.apache.weex.ui.component.list.template.TemplateDom;
  import org.apache.weex.ui.component.list.template.TemplateViewHolder;
  
  /**
   * Created by furture on 2018/5/11.
   */
  
  class AsynLayoutTask extends AsyncTask<Void, Void, Void> {
  
      private final TemplateViewHolder templateViewHolder;
      private final int position;
      private final WXComponent component;
  
      AsynLayoutTask(TemplateViewHolder templateViewHolder, int position, WXComponent component) {
          this.templateViewHolder = templateViewHolder;
          this.position = position;
          this.component = component;
      }
  
      @Override
      protected Void doInBackground(Void... params) {
          if(templateViewHolder.getHolderPosition() == position){
              if(component.getInstance() != null && !component.getInstance().isDestroy()) {
                  synchronized (templateViewHolder.getTemplateList()){
                      if(templateViewHolder.getTemplateList().isDestoryed()){
                          return null;
                      }
                      Layouts.doLayoutOnly(component, templateViewHolder);
                  }
              }
          }
          return null;
      }
  
      @Override
      protected void onPostExecute(Void aVoid) {
          if(position == templateViewHolder.getHolderPosition()) {
              if(component.getInstance() != null && !component.getInstance().isDestroy()) {
                  Layouts.setLayout(component, false);
                  if(templateViewHolder.getHolderPosition() >= 0){
                      templateViewHolder.getTemplateList().fireEvent("_attach_slot", TemplateDom
                          .findAllComponentRefs(templateViewHolder.getTemplateList().getRef(), position, component));
                  }
              }
          }
      }
  }
  