popsu-d7/sites/all/modules/boxes/boxes.module

<?php

/**
 *  Edit locations.
 */
define('BOXES_EDIT_IN_PLACE', 1);
define('BOXES_EDIT_SEPARATE_PAGE', 2);

/**
 * Implements hook_menu().
 */
function boxes_menu() {
  $items = array();
  ctools_include('plugins');
  $plugins = ctools_get_plugins('boxes', 'plugins');
  foreach ($plugins as $key => $info) {
    if (isset($info['title'])) {
      $items['admin/structure/block/box-add/' . $key] = array(
        'title' => 'Add ' . strtolower($info['title']),
        'page callback' => 'drupal_get_form',
        'page arguments' => array('boxes_add_form', 4),
        'access arguments' => array('administer boxes'),
        'type' => MENU_LOCAL_ACTION,
        'file' => 'boxes.admin.inc',
      );
    }
  }
  $items['admin/structure/block/manage/boxes/%boxes_box/delete'] = array(
    'title' => 'Delete box',
    'page callback' => 'drupal_get_form',
    'page arguments' => array('boxes_delete_form', 5),
    'access arguments' => array('administer boxes'),
    'type' => MENU_CALLBACK,
    'file' => 'boxes.admin.inc',
  );
  $items['admin/config/user-interface/boxes'] = array(
    'title' => 'Boxes',
    'page callback' => 'drupal_get_form',
    'page arguments' => array('boxes_settings'),
    'access arguments' => array('administer boxes'),
    'file' => 'boxes.admin.inc',
  );
  return $items;
}

/**
 * Access check for whether current user is able to edit boxes.
 */
function boxes_access_edit() {
  return user_access('administer boxes') || user_access('edit boxes');
}

/**
 * Access check for whether current user should be able to administer boxes.
 */
function boxes_access_admin() {
  return user_access('administer boxes') || (module_exists('spaces') && spaces_access_admin());
}

/**
 * Implements hook_permission().
 */
function boxes_permission() {
  return array(
    'edit boxes' => array(
      'title' => t('Edit boxes'),
      'description' => t('Edit existing boxes'),
    ),
    'administer boxes' => array(
      'title' => t('Administer boxes'),
      'description' => t('Administer boxes'),
    ),
  );
}

/**
 * Implements hook_theme().
 */
function boxes_theme($existing, $type, $theme, $path) {
  return array(
    'boxes_box' => array(
      'variables' => array('block' => NULL),
      'path' => drupal_get_path('module', 'boxes'),
      'file' => 'boxes.admin.inc',
    ),
  );
}

/**
 * Implements hook_block_info().
 */
function boxes_block_info() {
  ctools_include('plugins');
  $plugins = ctools_get_plugins('boxes', 'plugins');

  $boxes = boxes_box_load();
  $blocks = array();
  foreach ($boxes as $box) {
    $blocks[$box->delta]['info'] = $box->description;
    // Let context group the instances together
    $blocks[$box->delta]['context_group'] = t('Boxes for @plugin', array('@plugin' => $plugins[$box->plugin_key]['title']));
    // Let each box determine how it is cached
    $blocks[$box->delta]['cache'] = $box->cache_setting();
  }

  // 'Add' blocks for editing a page inline
  foreach ($plugins as $key => $info) {
    if (isset($info['title'])) {
      $blocks["boxes_add__$key"]['info'] = t('Add custom @title', array('@title' => strtolower($info['title'])));
      $blocks["boxes_add__$key"]['cache'] = DRUPAL_CACHE_CUSTOM;
    }
  }
  return $blocks;
}

/**
 * Implements hook_block_configure().
 */
function boxes_block_configure($delta) {
  if ($delta && strpos($delta, 'boxes_add__') !== 0) {
    if ($box = boxes_box_load($delta)) {
      $form_state = array('box' => $box);
      if ($box->options_form($form_state)) {
        $form = boxes_box_form(array(), $form_state);
        unset($form['submit']);
        return $form;
      }
    }
  }
}

/**
 * Implements hook_block_save().
 */
function boxes_block_save($delta, $edit) {
}

/**
 * Implements hook_block_view().
 */
function boxes_block_view($delta) {
  // Add boxes JS.
  boxes_add_js();

  ctools_include('export');

  // If the 'add' box was requested, replace the delta with a unique delta.
  if (strpos($delta, 'boxes_add__') === 0) {
    $plugin_key = str_replace('boxes_add__', '', $delta);
    $identifier = (module_exists('spaces') && $space = spaces_get_space()) ? "{$space->type}-{$space->id}" : 'box';
    $hash = boxes_create_hash($identifier);
    $delta = $identifier . "-" . $hash;
    $box = boxes_factory($plugin_key, array('delta' => $delta));
    $form_state = array(
      'box' => $box,
      'plugin_key' => $plugin_key,
      'custom_action' => TRUE,
      'no_redirect' => TRUE,
    );

    // We need to explicitly set the form input as empty to avoid the form being
    // processed. The actual form submission is handled in the footer.
    $form_state['input'] = array();
    $form_state['init_form'] = TRUE;
    $form = drupal_build_form('boxes_box_form', $form_state);

    $block['delta'] = $delta;
    $block['content'] = '';
    $block['editing'] = $form;
    $block['content'] = theme('boxes_box', array('block' => $block));
    $plugin = ctools_get_plugins('boxes', 'plugins', $plugin_key);
    $block['subject'] = t('Add custom @title', array('@title' => strtolower($plugin['title'])));
    $block['boxes_plugin'] = $box->plugin_key;
    return $block;
  }
  elseif ($box = boxes_box_load($delta)) {
    // Generate content and provide an editing form if user has proper
    // permissions.
    $block = $box->render();
    if (boxes_access_edit()) {
      if (variable_get('boxes_edit_location', BOXES_EDIT_IN_PLACE) == BOXES_EDIT_IN_PLACE) {
        $edit_link = array(
          'title' => t('Edit Box'),
          'href' => $_GET['q'],
          'query' => array(
            'plugin_key' => $box->plugin_key,
            'boxes_delta' => $block['delta'],
          ),
          'attributes' => array('class' => array('use-ajax')),
        );
      }
      else {
        $edit_link = array(
          'title' => t('Edit Box'),
          'href' => 'admin/structure/block/manage/boxes/' . $block['delta'] . '/configure',
          'query' => drupal_get_destination(),
        );

      }
      $block['controls'] = theme('links', array(
        'links' => array(
          'edit' => $edit_link,
          'cancel' => array(
            'title' => t('Cancel'),
            'href' => $_GET['q'],
          ),
        ),
      ));
    }
    // Add additional_classes
    if (!empty($box->options['additional_classes'])) {
      $block['additional_classes'] = $box->options['additional_classes'];
    }
    $block['content'] = theme('boxes_box', array('block' => $block));
    $block['boxes_plugin'] = $box->plugin_key;
    return $block;
  }
}

/**
 * Implements hook_page_alter().
 */
function boxes_page_alter(&$page) {
  $page['page_bottom']['boxes'] = array(
    '#markup' => boxes_footer(),
  );
}

/**
 * Implements hook_footer().
 *
 * All ajax requests are targeted back to the current page so that the proper
 * environment can be re-setup. Here in hook_footer we then detect that this is
 * an ajax submission and handle it.
 */
function boxes_footer() {

   // if ckeditor is used, the base path needs to be set on the original
   // page load, or ckeditor will set it incorrectly to the root.
   // while this is loaded on every page it is just a single set of a variable.
   if (module_exists("wysiwyg") && ($editor = wysiwyg_get_editor('ckeditor'))) {
     $base = base_path();
     drupal_add_js("window.CKEDITOR_BASEPATH = '$base{$editor['library path']}/'", 'inline');
   }

  // Besure the page isn't a 404 or 403.
  $headers = drupal_get_http_header();
  foreach ($headers as $header) {
    if ($header == "HTTP/1.1 404 Not Found" || $header == "HTTP/1.1 403 Forbidden") {
      return;
    }
  }
  if (!empty($_GET['boxes_delta']) && boxes_access_edit()) {
    include_once('includes/ajax.inc');
    $output = array();
    if (isset($_GET['plugin_key'])) {
      $plugin_key = $_GET['plugin_key'];
      $delta = $_GET['boxes_delta'];
      $box = boxes_box_load($delta);
      if (!$box && $plugin_key) {
        $box = boxes_factory($plugin_key, array('delta' => $delta));
        $form_state = array(
          'box' => $box,
          'plugin_key' => $plugin_key,
          'custom_action' => TRUE,
          'no_redirect' => TRUE,
        );
      }
      elseif (!$box) {
        return;
      }
      else {
        $form_state = array(
          'box' => $box,
          'no_redirect' => TRUE,
        );
      }
      $form = drupal_build_form('boxes_box_form', $form_state);
      $errors = form_set_error();

      if (!empty($errors)) { /* validation error */
        $msg_and_form = theme('status_messages') . drupal_render($form);
        $output[] = array(
          'command' => 'showBoxForm', 
          'method' => 'html', 
          'selector' => '#block-boxes-' . $delta, 
          'data' => $msg_and_form, 
          'settings' => NULL,
        );
      }
      //  if we are comming from a init form and need to continue then lets render the form again
      else if (empty($form_state['submitted']) || isset($_GET['init_form_continue'])) {
        $output[] = array(
          'command' => 'showBoxForm', 
          'method' => 'html', 
          'selector' => '#boxes-box-' . $delta, 
          'data' => drupal_render($form), 
          'settings' => NULL,
        );
      }
      else {
        $output[] = array(
          'selector' => '#block-boxes-' . $delta,
          'command' => 'getBlock',
          'method' => 'replaceWith',
          'delta' => $delta,
          'url' => url($_GET['q'], array('absolute' => TRUE)),
        );

      }
    }
    else {
      $block = boxes_block_view($_GET['boxes_delta']);
      $block['module'] = 'boxes';
      $block['region'] = 'page_bottom';
      $block['content'] = array('#markup' => $block['content']);
      $block = (object) $block;

      $renderable = _block_get_renderable_array(_block_render_blocks(array('boxes_' . $_GET['boxes_delta'] => $block)));
      $markup = trim(drupal_render($renderable));

      $id = 'block-boxes-' . $_GET['boxes_delta'];
      // We cannot use drupal_html_id() here because it will increment the id on
      // pages where a box is already present. So we do its other transforms
      // manually.
      $id = strtr(drupal_strtolower($id), array(' ' => '-', '_' => '-', '[' => '-', ']' => ''));
      $id = preg_replace('/[^A-Za-z0-9\-_]/', '', $id);
      $id = preg_replace('/\-+/', '-', $id);


      $output[] = ajax_command_replace('#' . $id, $markup);
      if (module_exists('context')) {
        array_unshift($output, array(
          'selector' => '#' . $id,
          'command' => 'preReplaceContextBlock',
          'id' => $id,
        ));
        $output[] = array(
          'selector' => '#' . $id,
          'command' => 'postReplaceContextBlock',
          'id' => $id,
        );
      }
    }
    ajax_deliver(array('#type' => 'ajax', '#commands' => $output));
    exit();
  }
}

/**
 * Instantiate box object.
 *
 * @param $plugin_key
 *   The string id of the boxes plugin.
 * @param $values
 *   The values to set on the box.
 *
 * @return a box object.
 */
function boxes_factory($plugin_key, $values = array()) {
  module_load_include('inc', 'boxes', 'plugins/boxes_box');
  return boxes_box::factory($plugin_key, $values);
}

/**
 * Load a box.
 */
function boxes_box_load($delta = NULL) {
  if (isset($delta)) {
    $box = boxes_box::load($delta);
    drupal_alter('boxes_box_load', $box, $delta);
    return $box;
  }
  ctools_include('export');
  $boxes = array();
  foreach (ctools_export_load_object('box') as $box) {
    $box = boxes_box::load($box->delta);
    if($box) {
      drupal_alter('boxes_box_load', $box, $delta);
      $boxes[$box->delta] = $box;
    }
  }
  return $boxes;
}

/**
 * Reset boxes load caches.
 */
function boxes_box_load_reset() {
  boxes_box::reset();
}

/**
 * Common element of the box form
 */
function boxes_box_form($form, &$form_state) {
  $box = $form_state['box'];
  if(method_exists($box, "box_form")) {
    return $box->box_form($form, $form_state);
  }
  // For hook_block_save()
  $form['plugin_key'] = array(
    '#type' => 'value',
    '#value' => $box->plugin_key,
  );
  $form['delta'] = array(
    '#type' => 'value',
    '#value' => $box->delta,
  );
  $form['description'] = array(
    '#type' => 'textfield',
    '#title' => t('Box description'),
    '#default_value' => $box->description,
    '#maxlength' => 64,
    '#description' => t('A brief description of your box. Used for administrative purposes.'),
    '#required' => TRUE,
    '#weight' => -19,
  );
  $form['title'] = array(
    '#type' => 'textfield',
    '#title' => t('Box title'),
    '#maxlength' => 64,
    '#description' => t('The rendered title of the box as shown to the user.'),
    '#default_value' => $box->title,
    '#weight' => -18,
  );
  $form['options'] = $box->options_form($form_state);
  $form['options']['#weight'] = -17;

  $form['boxes_adv'] = array(
    '#type'=> 'fieldset',
    '#collapsed' => TRUE,
    '#collapsible' => TRUE,
    '#title' => t('Advanced Settings'),
  );
  $form['boxes_adv']['additional_classes'] = array(
    '#title' => t('Additional CSS classes'),
    '#description' => t('Optional CSS classes that will be added to the top-level div container for this box. Separate them with spaces.'),
    '#type' => 'textfield',
    '#default_value' => isset($box->options['additional_classes']) ? $box->options['additional_classes'] : '',
  );
  $form['submit'] = array(
    '#type' => 'submit',
    '#value' => t('Save'),
    '#attributes' => array('class' => array('boxes-ajax', 'use-ajax-submit')),
  );
  $form['cancel'] = array(
    '#type' => 'submit',
    '#value' => t('Cancel'),
    '#limit_validation_errors' => array(),
    '#attributes' => array('class' => array('boxes-ajax', 'use-ajax-submit')),
  );

  if (!empty($form_state['custom_action'])) {
    $form['#action'] = url($_GET['q'], array('query' => array(
        'boxes_delta' => $box->delta,
        'plugin_key' => $form_state['plugin_key'],
      )));
  }
  if (isset($form_state['init_form']) && $box->use_multistep_create()) {
    unset($form['options']);
    unset($form['cancel']);
    $form['submit']['#value'] = t('Continue');
    if (!empty($form_state['custom_action'])) {
      $form['#action'] = url($_GET['q'], array(
        'query' => array(
          'boxes_delta' => $box->delta,
          'init_form_continue' => TRUE,
          'plugin_key' => $form_state['plugin_key'],
        )
      ));
    }
  }

  return $form;
}

/**
 * Implements hook_form_alter().
 */
function boxes_form_alter(&$form, &$form_state, $form_id) {
  $path = implode('/', array_slice(arg(), 0, 5));
  if (($form_id != 'block_admin_configure' || $path != 'admin/structure/block/manage/boxes') && 
      ($form_id != 'boxes_add_form' || arg(3) != 'box-add')) {
    return;
  }
  
  // Use the Box form submit handler and properly redirect to the correct admin page
  array_unshift($form['#submit'], 'boxes_box_form_submit');
  $form['#action'] = '?destination=admin/structure/block';
  
  // Cancel behavior is different here
  unset($form['cancel']['#attributes']);
  $form['cancel']['#submit'] = array('boxes_block_cancel_submit');
}

/**
 * Submit handler for the inline form.
 */
function boxes_box_form_submit($form, $form_state) {
  if ($form_state['clicked_button']['#value'] == t('Cancel')) {
    return;
  }
  $box = boxes_factory($form_state['values']['plugin_key'], $form_state['values']);

  // if options_submit is defined let the box process the submit
  if (method_exists($box, 'options_submit')) {
    $box->options_submit($form, $form_state);
  }
  // Let's set the additional_classes as an option
  $box->options['additional_classes'] = isset($form_state['values']['additional_classes']) ?
    $form_state['values']['additional_classes'] : array();
    
  if (module_exists('spaces') && $space = spaces_get_space()) {
    $space->controllers->boxes->set($box->delta, $box);
  }
  else {
    $box->save();
  }
}

/**
 * Implements hook_form_alter for block_admin_configure().
 */
function boxes_form_block_admin_configure_alter(&$form, &$form_state) {
  if ($form['module']['#value'] == 'boxes') {
    $box = boxes_box_load($form['delta']['#value']);
    if (($box->export_type & EXPORT_IN_DATABASE) && ($box->export_type & EXPORT_IN_CODE)) {
      $form['actions']['revert'] = array(
        '#type' => 'submit',
        '#value' => t('Revert'),
        '#submit' => array('boxes_block_delete_submit'),
      );
    }
    elseif (!($box->export_type & EXPORT_IN_CODE)) {
      $form['actions']['delete'] = array(
        '#type' => 'submit',
        '#value' => t('Delete'),
        '#submit' => array('boxes_block_delete_submit'),
      );
    }
    
    // Cancel behavior is different on admin/structure page
    unset($form['settings']['cancel']);
    $form['actions']['cancel'] = array(
      '#type' => 'submit',
      '#value' => t('Cancel'),
      '#submit' => array('boxes_block_cancel_submit'),
    );    
  }
}

/**
 * Submit handler for box cancel from the block/manage/boxes/[MACHINE-NAME]/configure
 */ 
function boxes_block_cancel_submit($form, &$form_state) {
  if (module_exists('overlay')) {
    overlay_close_dialog();
  }
  else {
    drupal_goto('/admin/structure/block');
  }
}

// Submit handler for box deletion.
/**
 * @todo Please document this function.
 * @see http://drupal.org/node/1354
 */
function boxes_block_delete_submit($form, &$form_state) {
  // $form_state['redirect'] will not work here since we are using $form['#action'] with destination
  $_GET['destination'] = 'admin/structure/block/manage/boxes/' . $form_state['values']['delta'] . '/delete';
}

/**
 * Alters the block admin form to add delete links next to boxes blocks.
 */
function boxes_form_block_admin_display_form_alter(&$form, $form_state) {
  foreach (element_children($form['blocks']) as $i) {
    if (isset($form['blocks'][$i]['module']['#value']) && $form['blocks'][$i]['module']['#value'] == 'boxes') {
      $delta = $form['blocks'][$i]['delta']['#value'];
      if (strpos($delta, 'boxes_add__') !== 0) {
        $box = boxes_box_load($delta);
        if (($box->export_type & EXPORT_IN_DATABASE) && ($box->export_type & EXPORT_IN_CODE)) {
          $form['blocks'][$i]['delete'] = array(
            '#title' => t('revert'),
            '#type' => 'link',
            '#href' => 'admin/structure/block/manage/boxes/' . $delta . '/delete'
          );
        }
        elseif (!($box->export_type & EXPORT_IN_CODE)) {
          $form['blocks'][$i]['delete'] = array(
            '#title' => t('delete'),
            '#type' => 'link',
            '#href' => 'admin/structure/block/manage/boxes/' . $delta . '/delete'
          );
        }
      }
    }
  }
}

/**
 * Implements hook_ctools_plugin_api().
 */
function boxes_ctools_plugin_api($module, $api) {
  if ($module == 'spaces' && $api == 'plugins') {
    return array('version' => 3);
  }
  elseif ($module == 'boxes' && $api == 'plugins') {
    return array('version' => 1);
  }
}

/**
 * Implements hook_ctools_plugin_plugins().
 */
function boxes_ctools_plugin_type() {
  return array(
    'plugins' => array(
      'cache' => TRUE,
      'use hooks' => TRUE,
      'classes' => array('handler'),
    ),
  );
}

/**
 * Implements hook_boxes_plugins().
 */
function boxes_boxes_plugins() {
  $info = array();
  $path = drupal_get_path('module', 'boxes') . '/plugins';
  $info['box'] = array(
    'handler' => array(
      'class' => 'boxes_box',
      'file' => 'boxes_box.inc',
      'path' => $path,
    ),
  );
  $info['simple'] = array(
    'title' => 'Box',
    'handler' => array(
      'parent' => 'box',
      'class' => 'boxes_simple',
      'file' => 'boxes_simple.inc',
      'path' => $path,
    ),
  );
  return $info;
}

/**
 * Implements hook_spaces_plugins().
 */
function boxes_spaces_plugins() {
  $plugins = array();
  $plugins['spaces_controller_boxes'] = array(
    'handler' => array(
      'path' => drupal_get_path('module', 'boxes') . '/plugins',
      'file' => 'spaces_controller_boxes.inc',
      'class' => 'spaces_controller_boxes',
      'parent' => 'spaces_controler',
    ),
  );
  return $plugins;
}

/**
 * Implements hook_spaces_registry().
 */
function boxes_spaces_registry() {
  return array(
    'controllers' => array(
      'boxes' => array(
        'title' => t('Boxes'),
        'plugin' => 'spaces_controller_boxes',
      ),
    ),
  );
}

/**
 * Implements hook_spaces_dashboard_block_access_alter().
 *
 * Provides access to blocks specific to each space.
 */
function boxes_spaces_dashboard_block_access_alter(&$access) {
  foreach (array_keys($access) as $bid) {
    list($module, $delta) = explode('-', $bid, 2);
    if ($module === 'boxes') {
      // This is the add block, give access to admins.
      if (strpos($delta, 'boxes_add__') === 0) {
        $access[$bid] = boxes_access_admin();
      }
      // If this box is specific to the current space, allow access.
      elseif (module_exists('spaces') && $space = spaces_get_space()) {
        $in_space = $space->controllers->boxes->get($delta, 'space');
        $access[$bid] = $access[$bid] || !empty($in_space);
      }
      // Outside of spaces, give admins access to all boxes.
      // @todo boxes_access_admin() may need to be boxes_access_edit().
      else {
        $access[$bid] = boxes_access_admin();
      }
    }
  }
}

/**
 * Implements hook_context_block_info_alter().
 *
 * Provides spaces integration when working with blocks using context.
 */
function boxes_context_block_info_alter(&$blocks) {
  // Add boxes JS. If this is getting called, it's highly likely a context
  // inline editor is on the page.
  boxes_add_js();

  if (module_exists('spaces') && $space = spaces_get_space()) {
    $item = menu_get_item();
    // Prevent space-specific blocks from appearing on the dashboard settings
    // page within a space.
    if (!(isset($item['page_callback'], $item['page_arguments'][0]) && $item['page_callback'] === 'drupal_get_form' && $item['page_arguments'][0] === 'spaces_dashboard_admin_form')) {
      foreach ($space->controllers->boxes->get() as $box) {
        $add = new stdClass();
        $add->bid = "boxes-{$box->delta}";
        $add->delta = $box->delta;
        $add->info = $box->description;
        $add->cache = DRUPAL_CACHE_CUSTOM;
        $add->module = 'boxes';
        $blocks[$add->bid] = $add;
      }
    }
  }
}

/**
 * Implements hook_boxes_box_load_alter().
 *
 * Provides spaces integration for per-space overrides of a given box.
 */
function boxes_boxes_box_load_alter(&$box, $delta) {
  if (!$delta) {
    $delta = $box->delta;
  }
  if (module_exists('spaces') && $space = spaces_get_space()) {
    if ($space_box = $space->controllers->boxes->get($delta)) {
      // Some older overrides may be stored as an array, check for these and
      // convert them to objects.
      if (is_array($space_box)) {
        $space_box = (object) $space_box;
      }
      $box = boxes_factory($space_box->plugin_key, $space_box);
      $box->new = FALSE;
    }
  }
}

/**
 * Implements hook_features_pipe_MODULE_alter().
 */
function boxes_features_pipe_block_alter(&$more, $data, $export) {
  foreach ($data as $bid) {
    $split = explode('-', $bid);
    $module = array_shift($split);
    $delta = implode('-', $split);

    if ($module == 'boxes') {
      $more['box'][] = $delta;
    }
  }
}

/**
 * Add JavaScript to the page.
 */
function boxes_add_js() {
  static $added = FALSE;
  if ($added || (!boxes_access_admin() && !boxes_access_edit())) {
    return;
  }
  $added = TRUE;
  drupal_add_library('system', 'jquery.form', TRUE);
  drupal_add_library('system', 'drupal.form', TRUE);
  drupal_add_library('system', 'drupal.progress', TRUE);
  drupal_add_library('system', 'drupal.ajax', TRUE);
  drupal_add_library('system', 'ui.dialog');

  drupal_add_js(drupal_get_path('module', 'boxes') . '/boxes.js');
  drupal_add_css(drupal_get_path('module', 'boxes') . '/boxes.css');
  drupal_add_js(array('getQ' => $_GET['q']), array('type' => 'setting', 'scope' => JS_DEFAULT));
}

/**
 * Create a hash for a block id.
 */
function boxes_create_hash($identifier) {
  global $user;
  $boxes = boxes_block_info();
  $hash = dechex(crc32($user->sid . microtime()));
  while (isset($boxes["{$identifier}-{$hash}"])) {
    $hash = dechex(crc32($user->sid . microtime()));
  }
  return $hash;
}

/**
 * Preprocessor for theme('block').
 */
function boxes_preprocess_block(&$vars) {
  $vars['classes_array'] = isset($vars['classes_array']) ? $vars['classes_array'] : array();
  if ($vars['block']->module === 'boxes') {
  }
  if ($vars['block']->module === 'boxes' && isset($vars['block']->boxes_plugin)) {
    $vars['classes_array'][] = 'block-boxes-' . $vars['block']->boxes_plugin;
  }
  if ($vars['block']->module === 'boxes' && isset($vars['block']->additional_classes)) {
    $vars['classes_array'] = array_merge($vars['classes_array'], explode(' ', $vars['block']->additional_classes));
  }
}

/**
 * Preprocessor for theme('panels_pane').
 */
function boxes_preprocess_panels_pane(&$vars) {
  if ($vars['pane']->type == 'block') {
    list($module, $delta) = explode('-', $vars['pane']->subtype, 2);
    // Load up the actual box to check for additional classes.
    $box = boxes_box_load($delta);

    if (isset($box->plugin_key)) {
      $vars['classes_array'][] = 'block-boxes-' . $box->plugin_key;
    }
    if (isset($box->options['additional_classes'])) {
      $vars['classes_array'] = array_merge($vars['classes_array'], explode(' ', $box->options['additional_classes']));
    }
  }
}

/**
 * Implements hook_ctools_block_info().
 */
function boxes_ctools_block_info($module, $delta, &$info) {
  $info['category'] = t('Boxes');
}