Club Drupal

<?php

/**

 * @file

 * Definition of views_handler_field_counter.

 */

/**

 * Field handler to show a counter of the current row.

 *

 * @ingroup views_field_handlers

 */

class views_handler_field_counter extends views_handler_field {

  /**

   * {@inheritdoc}

   */

  public function option_definition() {

    $options = parent::option_definition();

    $options['counter_start'] = array('default' => 1);

    $options['reverse'] = array('default' => FALSE);

    return $options;

  }

  /**

   * {@inheritdoc}

   */

  public function options_form(&$form, &$form_state) {

    $form['counter_start'] = array(

      '#type' => 'textfield',

      '#title' => t('Starting value'),

      '#default_value' => $this->options['counter_start'],

      '#description' => t('Specify the number the counter should start at.'),

      '#size' => 2,

    );

    $form['reverse'] = array(

      '#type' => 'checkbox',

      '#title' => t('Reverse'),

      '#default_value' => $this->options['reverse'],

      '#description' => t('Reverse the counter.'),

    );

    parent::options_form($form, $form_state);

  }

  /**

   * {@inheritdoc}

   */

  public function query() {

    // Do nothing -- to override the parent query.

  }

  /**

   * {@inheritdoc}

   */

  public function render($values) {

    $reverse = empty($this->options['reverse']) ? 1 : -1;

    // Note: 1 is subtracted from the counter start value below because the

    // counter value is incremented by 1 at the end of this function.

    $counter_start = is_numeric($this->options['counter_start']) ? $this->options['counter_start'] : 0;

    $count = ($reverse == -1) ? count($this->view->result) + $counter_start : $counter_start - 1;

    $pager = $this->view->query->pager;

    // Get the base count of the pager.

    if ($pager->use_pager()) {

      if ($reverse == -1) {

        $count = ($pager->total_items + $counter_start - ($pager->get_current_page() * $pager->get_items_per_page()) + $pager->get_offset());

      }

      else {

        $count += (($pager->get_items_per_page() * $pager->get_current_page() + $pager->get_offset())) * $reverse;

      }

    }

    // Add the counter for the current site.

    $count += ($this->view->row_index + 1) * $reverse;

    return $count;

  }

}