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 android.text.TextUtils;
  
  import org.apache.weex.ui.component.WXComponent;
  import org.apache.weex.ui.component.WXVContainer;
  import org.apache.weex.ui.component.list.WXCell;
  
  import java.util.List;
  
  /**
   * Created by furture on 2018/7/24.
   */
  
  public class Selector {
  
      /**
       * @param  selector  [att=xx]
       * query elements match selector, current only support attr selector
       * */
      public static void queryElementAll(WXComponent component, String selector, List<WXComponent> componentList){
          if(TextUtils.isEmpty(selector)){
              return;
          }
          selector = selector.replaceAll("\\[|]", "");
          String[] args = selector.split("=");
          if(args.length <= 0){
              return;
          }
          String key = args[0];
          String value = null;
          if(args.length > 1){
              value = args[1].trim();
          }
          if(component instanceof WXVContainer){
              WXVContainer container = (WXVContainer) component;
              for(int i=0; i<container.getChildCount(); i++){
                  queryElementAllByAttrs(container.getChild(i), key, value, componentList);
              }
          }
      }
  
  
      public static void closest(WXComponent component, String selector,List<WXComponent> componentList){
          if(TextUtils.isEmpty(selector)){
              return;
          }
          selector = selector.replaceAll("\\[|]", "");
          String[] args = selector.split("=");
          if(args.length <= 0){
              return;
          }
          String key = args[0];
          String value = null;
          if(args.length > 1){
              value = args[1].trim();
          }
          closestByAttrs(component, key, value, componentList);
      }
  
      private static void closestByAttrs(WXComponent component, String key, String value, List<WXComponent> componentList){
          if(matchAttrs(component, key, value)){
              componentList.add(component);
          }
          if(component instanceof WXCell || component instanceof  WXRecyclerTemplateList){
              return;
          }
          queryElementAllByAttrs(component.getParent(), key, value, componentList);
      }
  
  
      private static void queryElementAllByAttrs(WXComponent component, String key, String value, List<WXComponent> componentList){
          if(matchAttrs(component, key, value)){
              componentList.add(component);
          }
          if(component instanceof WXVContainer){
              WXVContainer container = (WXVContainer) component;
              for(int i=0; i<container.getChildCount(); i++){
                  queryElementAllByAttrs(container.getChild(i), key, value, componentList);
              }
          }
      }
  
  
      private static boolean matchAttrs(WXComponent component, String key, String value){
          if(component.isWaste()){
              return false;
          }
          if(!component.getAttrs().containsKey(key)){
              return false;
          }
          if(TextUtils.isEmpty(value)){
              return true;
          }
          Object attrValue = component.getAttrs().get(key);
          if(attrValue == null){
              return false;
          }
          return value.equals(attrValue.toString());
      }
  }
  