Habari\Theme::theme_area PHP Метод

    public function theme_area($theme, $area, $context = null, $scope = null)
    {
        // This array would normally come from the database via:
        $scopes = $this->get_scopes($area);
        $active_scope = 0;
        foreach ($scopes as $scope_id => $scope_object) {
            if (is_null($scope) && $this->check_scope_criteria($scope_object->criteria) || $scope == $scope_object->name) {
                $scope_block_count = DB::get_value('SELECT count( *) FROM {blocks_areas} ba WHERE ba.scope_id = ?', array($scope_object->id));
                if ($scope_block_count > 0) {
                    $active_scope = $scope_object->id;
                }
                break;
            }
        }
        $area_blocks = $this->get_blocks($area, $active_scope, $theme);
        $this->area = $area;
        if (isset($context)) {
            $this->context[] = $context;
        }
        // This is the block wrapper fallback template list
        $fallback = array($area . '.blockwrapper', 'blockwrapper', 'content');
        if (!is_null($context)) {
            array_unshift($fallback, $context . '.blockwrapper');
            array_unshift($fallback, $context . '.' . $area . '.blockwrapper');
        }
        $output = '';
        $i = 0;
        foreach ($area_blocks as $block_instance_id => $block) {
            // Temporarily set some values into the block
            $block->_area = $area;
            $block->_instance_id = $block_instance_id;
            $block->_area_index = $i++;
            $block->_fallback = $fallback;
            $hook = 'block_content_' . $block->type;
            Plugins::act($hook, $block, $this);
            Plugins::act('block_content', $block, $this);
            $block->_content = implode('', $this->content_return($block, $context));
            if (trim($block->_content) == '') {
                unset($area_blocks[$block_instance_id]);
            }
        }
        // Potentially render each block inside of a wrapper.
        reset($area_blocks);
        $firstkey = key($area_blocks);
        end($area_blocks);
        $lastkey = key($area_blocks);
        foreach ($area_blocks as $block_instance_id => $block) {
            $block->_first = $block_instance_id == $firstkey;
            $block->_last = $block_instance_id == $lastkey;
            // Set up the theme for the wrapper
            $this->block = $block;
            $this->content = $block->_content;
            // This pattern renders the block inside the wrapper template only if a matching template exists
            $newoutput = $this->display_fallback($fallback, 'fetch');
            if ($newoutput === false) {
                $output .= $block->_content;
            } else {
                $output .= $newoutput;
            }
            // Remove temporary values from the block so they're not saved to the database
            unset($block->_area);
            unset($block->_instance_id);
            unset($block->_area_index);
            unset($block->_first);
            unset($block->_last);
        }
        if (trim($output) != '') {
            // This is the area fallback template list
            $fallback = array($context . '.area.' . $area, $context . '.area', 'area.' . $area, 'area');
            $this->content = $output;
            $newoutput = $this->display_fallback($fallback, 'fetch');
            if ($newoutput !== false) {
                $output = $newoutput;
            }
        }
        $this->area = '';
        if (isset($context)) {
            array_pop($this->context);
        }
        return $output;
    }