package us.codecraft.webmagic.selector;
   
   import java.util.ArrayList;
   import java.util.List;
   
   /**
    * Selectable plain text.<br>
    * Can not be selected by XPath or CSS Selector.
    *
   * @author code4crafter@gmail.com <br>
   * @since 0.1.0
   */
  public class PlainText extends AbstractSelectable {
  
      protected List<String> sourceTexts;
  
      public PlainText(List<String> sourceTexts) {
          this.sourceTexts = sourceTexts;
      }
  
      public PlainText(String text) {
          this.sourceTexts = new ArrayList<String>();
          sourceTexts.add(text);
      }
  
      public static PlainText create(String text) {
          return new PlainText(text);
      }
  
      @Override
      public Selectable xpath(String xpath) {
          throw new UnsupportedOperationException("XPath can not apply to plain text. Please check whether you use a previous xpath with attribute select (/@href etc).");
      }
  
      @Override
      public Selectable $(String selector) {
  		throw new UnsupportedOperationException("$ can not apply to plain text. Please check whether you use a previous xpath with attribute select (/@href etc).");
      }
  
      @Override
      public Selectable $(String selector, String attrName) {
  		throw new UnsupportedOperationException("$ can not apply to plain text. Please check whether you use a previous xpath with attribute select (/@href etc).");
      }
  
      @Override
      public Selectable links() {
  		throw new UnsupportedOperationException("Links can not apply to plain text. Please check whether you use a previous xpath with attribute select (/@href etc).");
      }
  
      @Override
      public List<Selectable> nodes() {
          List<Selectable> nodes = new ArrayList<Selectable>(getSourceTexts().size());
          for (String string : getSourceTexts()) {
              nodes.add(PlainText.create(string));
          }
          return nodes;
      }
  
      @Override
      protected List<String> getSourceTexts() {
          return sourceTexts;
      }
  }