function _context_ui_get_blocks in Context 6

Same name and namespace in other branches

1. 5 context_ui/context_ui_admin.inc \_context_ui_get_blocks()
2. 6.2 context_ui/context_ui.admin.inc \_context_ui_get_blocks()

Helper function to generate a list of blocks from a specified region. If provided a context object, will generate a full list of blocks for that region distinguishing between system blocks and context-provided blocks.

Parameters

$region: The string identifier for a theme region. e.g. "left"

$context: A context object.

Return value

A keyed (by "module_delta" convention) array of blocks.

2 calls to _context_ui_get_blocks()

context_ui_form in context_ui/context_ui.admin.inc

Generates the omnibus context definition editing form. Note: submission and validation handlers are in context_ui_admin.inc

context_ui_form_process in context_ui/context_ui.admin.inc

Produces a context object from submitted form values.

File

context_ui/context_ui.admin.inc, line 940

Code

function _context_ui_get_blocks($region = null, $context = null) {
  $theme_key = variable_get('theme_default', 'garland');
  static $block_info, $valid, $system_blocks;

  // we don't static cache context blocks
  $context_blocks = $blocks = array();
  if (!$system_blocks) {

    // initialize regions
    foreach (system_region_list($theme_key) as $r => $l) {
      $system_blocks[$r] = array();
    }

    // load blocks from database
    $result = db_query("SELECT module, delta, weight, region, status FROM {blocks} WHERE theme = '%s' ORDER BY weight, module, delta", $theme_key);
    while ($block = db_fetch_object($result)) {

      // load block info
      $block_info[$block->module] = isset($block_info[$block->module]) ? $block_info[$block->module] : module_invoke($block->module, 'block', 'list');
      $block->label = $block_info[$block->module][$block->delta]['info'];
      $block->type = 'system';
      $block->bid = $block->module . '_' . $block->delta;

      // add block to region
      if ($block->region && $block->status) {
        $system_blocks[$block->region][$block->bid] = $block;
      }
      else {
        $system_blocks[0][$block->bid] = $block;
      }

      // mark block as available in DB
      $valid[$block->module . "_" . $block->delta] = true;
    }
  }

  // load system blocks into main block array
  $blocks = $system_blocks;

  // load context blocks if provided
  if (is_object($context) && !empty($context->block)) {

    // iterate over context-associated blocks
    foreach ($context->block as $block) {
      $block = (object) $block;

      // check that this is a valid block
      if ($valid[$block->module . "_" . $block->delta]) {

        // if region has been specified, ensure that block belongs to it
        if (!$region || isset($region) && $block->region == $region) {

          // load block info
          $block_info[$block->module] = $block_info[$block->module] ? $block_info[$block->module] : module_invoke($block->module, 'block', 'list');
          $block->label = $block_info[$block->module][$block->delta]['info'];
          $block->type = 'context_ui';
          $block->bid = $block->module . '_' . $block->delta;

          // add block to region
          if ($block->region) {
            $blocks[$block->region][$block->bid] = $block;
          }
          else {
            $blocks[0][$block->bid] = $block;
          }
        }
      }
    }
  }
  foreach ($blocks as $r => $sort_region) {
    if ($r !== 0) {
      uasort($sort_region, create_function('$a, $b', 'return ($a->weight - $b->weight);'));
      $blocks[$r] = $sort_region;
    }
  }
  return $region ? $blocks[$region] : $blocks;
}