<?php

/**
 * @file
 * Provides a simple numeric counter pager for views_slideshow.
 */

/**
 * Implements hook_views_slideshow_widget_pager_info().
 */
function views_slideshow_simple_pager_views_slideshow_widget_pager_info($view) {
  return array(
    'views_slideshow_simple_pager' => array(
      'name' => t('Simple counter'),
    ),
  );
}

/**
 * Implements hook_theme().
 */
function views_slideshow_simple_pager_theme($existing, $type, $theme, $path) {
  return array(
    'views_slideshow_simple_pager' => array(
      'variables' => array(
        'vss_id' => NULL,
        'view' => NULL,
        'settings' => array(),
        'location' => NULL,
        'attributes' => array(),
      ),
      'template' => 'theme/views-slideshow-pager-fields',
      'path' => drupal_get_path('module', 'views_slideshow'),
    ),
  );
}

/**
 * Template preprocess function for Views Slideshow simple pager.
 *
 * @ingroup vss_theme
 */
function template_preprocess_views_slideshow_simple_pager(&$vars) {
  // Call the fields pager preprocess function.
  _views_slideshow_preprocess_views_slideshow_pager_fields($vars);

  // Override the (empty) rendered field items with our simple pager.
  $vars['rendered_field_items'] = '';
  if (empty($vars['settings']['hide_on_single_slide']) || count($vars['view']->result) > 1) {
    // Each slide can contain more than one item.
    $items_per_slide = $vars['view']->style_options['views_slideshow_cycle']['items_per_slide'];
    // The remainder will be put on an additional slide.
    $count_remainder = count($vars['view']->result) % $items_per_slide;
    // Figure out the number of slides based on result count
    // and items per slide, plus one if there is a remainder.
    $slide_count = ($count_remainder) ? floor(count($vars['view']->result) / $items_per_slide) + 1 : floor(count($vars['view']->result) / $items_per_slide);
    for ($count = 0; $count < $slide_count; ++$count) {
      $counted = $count + 1;
      $vars['rendered_field_items'] .= theme('views_slideshow_pager_field_item', array(
        'vss_id' => $vars['vss_id'],
        'item' => l($counted, 'javascript:void(0)', array(
          'fragment' => '',
          'external' => TRUE,
        )),
        'count' => $count,
        'location' => $vars['location'],
      ));
    }
  }

  // Clone the pager fields JavaScript object and methods.
  drupal_add_js('Drupal.viewsSlideshowSimplePager = Drupal.viewsSlideshowPagerFields || {};', 'inline');

  // Add anchor tags in the pager.
  drupal_add_js('var uniquePagerID =
    jQuery(".views-slideshow-pager-field-item").click(function() {
      var eID = jQuery(this).attr("id").replace("views_slideshow_pager_field_item_bottom_","");
      var ssID = eID.substring(0,eID.lastIndex("_"));
      var sN = eID.substring(eID.lastIndex("_") + 1);
      Drupal.viewsSlideshow.action({ "action": "goToSlide", "slideshowID": ssID, "slideNum": sN });
    });
  ', 'inline');

  // Add minimal styling.
  drupal_add_css(drupal_get_path('module', 'views_slideshow_simple_pager') . '/pager.css', array(
    'group' => CSS_DEFAULT,
    'type' => 'file',
  ));
}