<?php
// $Id: thickbox.module,v 1.18.2.15 2009-01-04 00:39:56 frjo Exp $

/**
 * @file
 * Author: Fredrik Jonsson fredrik at combonet dot se
 * The thickbox module is a simple wrapper for the jquery plugin
 * ThickBox http://jquery.com/demo/thickbox/.
 */

/**
 * Implementation of hook_theme().
 */
function thickbox_theme() {
  $theme = array(
    'imagefield_image_imagecache_thickbox' => array(
      'arguments' => array('namespace' => NULL, 'field' => NULL, 'path' => NULL, 'alt' => NULL, 'title' => NULL, 'gid' => NULL, 'attributes' => NULL),
    ),
  );

  if (module_exists('imagecache')) {
    foreach (imagecache_presets() as $preset) {
      $theme['thickbox_formatter_'. $preset['presetname'] .'][thickbox'] = array(
        'function' => 'theme_thickbox_formatter',
        'arguments' => array('element' => NULL),
      );
    }
  }

  return $theme;
}

/**
 * Implementation of hook_init().
 */
function thickbox_init() {
  // Code from the block_list funtion in block.module.
  // If the path doesn't match any of the exeptions, load header files.
  $path = drupal_get_path_alias($_GET['q']);
  $regexp = '/^('. preg_replace(array('/(\r\n?|\n)/', '/\\\\\*/', '/(^|\|)\\\\<front\\\\>($|\|)/'), array('|', '.*', '\1'. preg_quote(variable_get('site_frontpage', 'node'), '/') .'\2'), preg_quote(variable_get('thickbox_pages', ''), '/')) .')$/';
  // Compare with the internal and path alias (if any).
  $page_match = preg_match($regexp, $path);
  if ($path != $_GET['q']) {
    $page_match = $page_match || preg_match($regexp, $_GET['q']);
  }
  if (!$page_match) {
    _thickbox_doheader();
  }
}

/**
 * Implementation of hook_menu().
 */
function thickbox_menu() {
  $items = array();

  $items['admin/settings/thickbox'] = array(
    'title' => 'Thickbox',
    'description' => 'Allows the user to configure the Thickbox settings.',
    'file' => 'thickbox.admin.inc',
    'page callback' => 'drupal_get_form',
    'page arguments' => array('thickbox_admin_settings'),
    'access callback' => 'user_access',
    'access arguments' => array('administer site configuration'),
    'type' => MENU_NORMAL_ITEM,
  );
  $items['user/login/thickbox'] = array(
    'title' => 'Login',
    'page callback' => 'thickbox_login',
    'access callback' => 'user_is_anonymous',
    'type' => MENU_CALLBACK,
  );

  return $items;
}

/**
 * Menu callback for thickbox_login.
 */
function thickbox_login() {
  print drupal_get_form('user_login');
  exit;
}

/**
 * Loads the various js and css files.
 */
function _thickbox_doheader() {
  global $user;

  $path = drupal_get_path('module', 'thickbox');
  drupal_add_css($path .'/thickbox.css');

  // Insert translated strings as javascript settings.
  $tb_msg = array(
    'close' => t('Close'),
    'next' => t('Next >'),
    'prev' => t('< Prev'),
    'esc_key' => t('or Esc Key'),
    'next_close' => t('Next / Close on last'),
    'image_count' => t('Image !current of !total')
  );
  drupal_add_js(array('thickbox' => $tb_msg), 'setting');

  if ($user->uid == 0 && variable_get('thickbox_login', 0)) {
    drupal_add_js($path .'/thickbox_login.js');
  }

  if (variable_get('thickbox_auto', 0) && module_exists('image')) {
    drupal_add_js(array('thickbox' => array('derivative' => variable_get('thickbox_derivative', 'preview'))), 'setting');
    drupal_add_js($path .'/thickbox_auto.js');
  }

  drupal_add_js($path .'/thickbox.js');
}

/**
 * Implementation of hook_form_alter().
 * Reformat the login form.
 */
function thickbox_form_alter(&$form, $form_state, $form_id) {
  if ($form_id == 'user_login' && arg(0) == 'user' && arg(1) == 'login' && arg(2) == 'thickbox') {
    $form['#action'] = url('user/login', array('query' => array('destination' => $_GET['destination'])));
    $form['name']['#size'] = 25;
    $form['pass']['#size'] = 25;
  }
}

/**
 * Implementation of hook_field_formatter_info().
 * Adds certain thickbox+imagecache formatters to CCK image fields if imagefield.module and imagecache.module exist.
 */
function thickbox_field_formatter_info() {
  $formatters = array();
  if (module_exists('imagefield') && module_exists('imagecache')) {
    foreach (imagecache_presets() as $preset) {
      $formatters[$preset['presetname'] .'][thickbox'] = array(
        'label' => t('Thickbox: @preset image', array('@preset' => $preset['presetname'])),
        'field types' => array('image', 'filefield'),
      );
    }
  }

  return $formatters;
}

function theme_thickbox_formatter($element) {
  if (isset($element['#item']['nid']) && $node = node_load($element['#item']['nid'])) {
    return thickbox_field_formatter($element['#field_name'], $element['#item'], $element['#formatter'], $node);
  }
}

/**
 * Implementation of hook_field_formatter().
 */
function thickbox_field_formatter($field, $item, $formatter, $node) {
  if (module_exists('imagefield') && module_exists('imagecache') && !empty($item['fid'])) {
    if (is_string($item['data'])) {
      $item['data'] = unserialize($item['data']);
    }
    if (!isset($item['filepath'])) {
      $file = field_file_load($item['fid']);
      $item['filepath'] = $file['filepath'];
    }
    // If the title is empty use description, alt or the node title in that order.
    if (empty($item['data']['title'])) {
      if (!empty($item['data']['description'])) {
        $item['data']['title'] = $item['data']['description'];
      }
      else if (!empty($item['data']['alt'])) {
        $item['data']['title'] = $item['data']['alt'];
      }
      else {
        $item['data']['title'] = $node->title;
      }
    }
    // Build the gallery id.
    $nid = $item['nid'] ? $item['nid'] : ($node->nid ? $node->nid : '');
    switch (variable_get('thickbox_imagefield_gallery', 1)) {
      case 0:
        $gallery_id = 'all';
        break;
      case 1:
        $gallery_id = $nid;
        break;
      case 2:
        $gallery_id = $nid .'-'. $field;
        break;
      case 3:
        $gallery_id = $nid .'-'. $item['fid'];
        break;
    }
    list($namespace, $presetname) = explode('][', $formatter, 2);
    if ($preset = imagecache_preset_by_name($namespace)) {
      return theme('imagefield_image_imagecache_thickbox', $namespace, $field, $item['filepath'], $item['data']['alt'], $item['data']['title'], $gallery_id);
    }
  }
}

/**
 * Implementation of theme_imagefield_image_imagecache_thickbox().
 */
function theme_imagefield_image_imagecache_thickbox($namespace, $field, $path, $alt = '', $title = '', $gid = '', $attributes = NULL) {
  if (!empty($path)) {
    $attributes = drupal_attributes($attributes);
    $imagecache_path = imagecache_create_url($namespace, $path);
    $image = '<img src="'. $imagecache_path .'" alt="'. check_plain($alt) .'" '. $attributes .' />';

    if ($presetname = variable_get('thickbox_imagecache_preset', 0)) {
      $link_path = imagecache_create_url($presetname, $path);
    }
    else {
      $link_path = file_create_url($path);
    }

    return l($image, $link_path, array('html' => TRUE, 'attributes' => array('title' => $title, 'class' => 'thickbox', 'rel' => 'gallery-'. $gid)));
  }
}