Create homebox page with custom list of blocks per user

After a few hours of digging through code, I found that a few small code changes will allow blocks to be made available to a specific user. The main thing preventing this was the fact that the blocks are saved as part of the homebox page in the menu hook, which means they are only added to the page when the menu router is rebuilt.

  // Created Homebox pages
  $pages = homebox_pages();
  if (is_array($pages) && count($pages) > 0) {
    foreach ($pages as $page) {
      $items[$page->settings['path']] = array(
        'title' => $page->settings['title'],
        'page callback' => 'homebox_build',
        'page arguments' => array($page->name),
        'access callback' => '_homebox_user_access_view_homebox',
        'access arguments' => array($page),
        'type' => $page->settings['menu'] ? MENU_NORMAL_ITEM : MENU_CALLBACK,
      );
      $items[$page->settings['path'] . '/block/%'] = array(
        'title' => $page->settings['title'],
        'page callback' => 'homebox_build_block',
        'page arguments' => array($page, count(explode('/', $page->settings['path'])) + 1),
        'access callback' => '_homebox_user_access_view_homebox',
        'access arguments' => array($page),
        'type' => $page->settings['menu'] ? MENU_NORMAL_ITEM : MENU_CALLBACK,
      );
    }
  }

By changing the menu hook so that only the page name is passed to homebox_build() and homebox_pre_build_user() instead of the whole $page object, then the page is built dynamically based on hook_homebox implementations at load time. I'll work on adding some caching to make this a quicker process, but for now this greatly increases flexibility.

Patch is attached.

I've looked at the configurable block keys before, but I'm not seeing how the tracker_user block applies. In my case, I need to have multiple blocks that are unique to the user, not just one block where the content is distinct for each user. As I read it, the configurable block info controls the content of the specific block, not how many blocks are displayed on the homebox page. Am I missing something?

Thanks.