<?php
/**
 * @file Hook and callback implementations that must be available at all times.
 */

/**
 * Implements hook_menu().
 */
function image_styles_admin_menu() {
  $items = array();
  $items['admin/config/media/image-styles/duplicate/%image_style'] = array(
    'title' => 'Duplicate style',
    'description' => 'Make a copy of an image style.',
    'page callback' => 'image_styles_admin_duplicate_page_callback',
    'page arguments' => array(5),
    'access arguments' => array('administer image styles'),
    'file' => 'image_styles_admin.inc',
  );
  $items['admin/config/media/image-styles/export/%image_style'] = array(
    'title' => 'Export style',
    'description' => 'Export an image style.',
    'page callback' => 'drupal_get_form',
    'page arguments' => array('image_styles_admin_export_form', 5),
    'access arguments' => array('administer image styles'),
    'file' => 'image_styles_admin.inc',
  );
  $items['admin/config/media/image-styles/import'] = array(
    'title' => 'Import style',
    'description' => 'Import an image style.',
    'page callback' => 'drupal_get_form',
    'page arguments' => array('image_styles_admin_import_form'),
    'access arguments' => array('administer image styles'),
    'type' => MENU_LOCAL_ACTION,
    'weight' => 3,
    'file' => 'image_styles_admin.inc',
  );
  return $items;
}

/**
 * Implements hook_preprocess_HOOK for theme image_style_list.
 */
function image_styles_admin_preprocess_image_style_list(&$variables) {
  // Tell imagecache_actions_preprocess_image_style_list to preprocess the next
  // call to theme_table()
  $flag = TRUE;
  image_styles_admin_preprocess_table($flag);
}

/**
 * Implements hook_preprocess_HOOK for theme table.
 */
function image_styles_admin_preprocess_table(&$variables) {
  static $is_in_image_style_list = FALSE;

  if (is_bool($variables)) {
    // Called from imagecache_actions_style_duplicate(): set flag
    $is_in_image_style_list = $variables;
  }
  else if ($is_in_image_style_list) {
    // Normal preprocess hook call: only process if theme('table', ...) has been
    // called by theme_image_style_list()

    // Find the column with the edit link in it.
    $i = 0;
    $first_row = reset($variables['rows']);
    foreach ($first_row as $i => $cell) {
      if (strpos($cell, '>' . t('edit') . '<') !== FALSE) {
        break;
      }
    }

    // Increase the colspan for the column with the edit link to include the
    // duplicate and export links as well.
    $variables['header'][$i]['colspan'] += 2;

    // Add the 2 links to each row by duplicating the edit link and then
    // changing the text and the link.
    $edit_column = $i;
    foreach ($variables['rows'] as &$row) {
      $i = $edit_column;
      // Duplicate the edit link twice.
      array_splice($row, $i + 1, 0, array($row[$i], $row[$i]));
      // Replace edit with duplicate in text and href
      $i++;
      $row[$i] = str_replace('>' . t('edit') . '<', '>' . t('duplicate') . '<', $row[$i]);
      $row[$i] = preg_replace('#/admin/config/media/image-styles/edit/#', '/admin/config/media/image-styles/duplicate/', $row[$i]);
      // Replace edit with export in text and href
      $i++;
      $row[$i] = str_replace('>' . t('edit') . '<', '>' . t('export') . '<', $row[$i]);
      $row[$i] = preg_replace('#/admin/config/media/image-styles/edit/#', '/admin/config/media/image-styles/export/', $row[$i]);
    }

    // Don't preprocess subsequent calls to theme_table().
    $is_in_image_style_list = FALSE;
  }
}