content: package com.taobao.arthas.core.shell.term;
  
  import com.taobao.arthas.core.shell.handlers.Handler;
  
  /**
   * Provide interactions with the Shell TTY.
   *
   * @author <a href="mailto:julien@julienviet.com">Julien Viet</a>
   */
  public interface Tty {
  
      /**
       * @return the declared tty type, for instance {@literal vt100}, {@literal xterm-256},  etc... it can be null
       * when the tty does not have declared its type.
       */
      String type();
  
      /**
       * @return the current width, i.e the number of rows or {@literal -1} if unknown
       */
      int width();
  
      /**
       * @return the current height, i.e the number of columns or {@literal -1} if unknown
       */
      int height();
  
      /**
       * Set a stream handler on the standard input to read the data.
       *
       * @param handler the standard input
       * @return this object
       */
      Tty stdinHandler(Handler<String> handler);
  
      /**
       * Write data to the standard output.
       *
       * @param data the data to write
       * @return this object
       */
      Tty write(String data);
  
      /**
       * Set a resize handler, the handler is called when the tty size changes.
       *
       * @param handler the resize handler
       * @return this object
       */
      Tty resizehandler(Handler<Void> handler);
  
  }
  