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   1  <?php
   2  /**
   3   * Class to walk into a list of Title objects.
   4   *
   5   * Note: this entire file is a byte-for-byte copy of UserArrayFromResult.php
   6   * with s/User/Title/.  If anyone can figure out how to do this nicely
   7   * with inheritance or something, please do so.
   8   *
   9   * This program is free software; you can redistribute it and/or modify
  10   * it under the terms of the GNU General Public License as published by
  11   * the Free Software Foundation; either version 2 of the License, or
  12   * (at your option) any later version.
  13   *
  14   * This program is distributed in the hope that it will be useful,
  15   * but WITHOUT ANY WARRANTY; without even the implied warranty of
  16   * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
  17   * GNU General Public License for more details.
  18   *
  19   * You should have received a copy of the GNU General Public License along
  20   * with this program; if not, write to the Free Software Foundation, Inc.,
  21   * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
  22   * http://www.gnu.org/copyleft/gpl.html
  23   *
  24   * @file
  25   */
  26  
  27  class TitleArrayFromResult extends TitleArray implements Countable {
  28      /** @var ResultWrapper */
  29      public $res;
  30  
  31      public $key;
  32  
  33      public $current;
  34  
  35  	function __construct( $res ) {
  36          $this->res = $res;
  37          $this->key = 0;
  38          $this->setCurrent( $this->res->current() );
  39      }
  40  
  41      /**
  42       * @param bool|ResultWrapper $row
  43       * @return void
  44       */
  45  	protected function setCurrent( $row ) {
  46          if ( $row === false ) {
  47              $this->current = false;
  48          } else {
  49              $this->current = Title::newFromRow( $row );
  50          }
  51      }
  52  
  53      /**
  54       * @return int
  55       */
  56  	public function count() {
  57          return $this->res->numRows();
  58      }
  59  
  60  	function current() {
  61          return $this->current;
  62      }
  63  
  64  	function key() {
  65          return $this->key;
  66      }
  67  
  68  	function next() {
  69          $row = $this->res->next();
  70          $this->setCurrent( $row );
  71          $this->key++;
  72      }
  73  
  74  	function rewind() {
  75          $this->res->rewind();
  76          $this->key = 0;
  77          $this->setCurrent( $this->res->current() );
  78      }
  79  
  80      /**
  81       * @return bool
  82       */
  83  	function valid() {
  84          return $this->current !== false;
  85      }
  86  }