<?php

class StringDisplay extends AbstractDisplay
{

   private $str;
   private $width;
   
   public function __construct( $str ) {
      $this->str = $str;
      $this->width = mb_strlen($this->str);
      
      if ( $this->width != strlen($this->str) ) {
         $this->width = $this->width * 2;
      }
   }
   
   public function open() {
      $this->printLine();
   }
   
   public function adPrint() {
      echo "|".$this->str."|";
      echo "\n";
   }
   
   public function close() {
      $this->printLine();
   }

   private function printLine() {
      echo "+";
      for ($i = 0; $i < $this->width; $i++) {
         echo "-";
      }
      echo "+";
      echo "\n";
   }

}

?>