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gyro/core/view/widgets/block.widget.php

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<?php
/**
 * A widget printing a named block upon actions retrieved from given item
 * 
 * @author Gerd Riesselmann
 * @ingroup View
 */
class WidgetBlock implements IWidget {
        /**
         * Position to print blocks for (LEFT, RIGHT, CONTENT, or empty to print all blocks)
         *
         * @var string
         */
        public $position;
        /**
         * Page Data
         * 
         * @var PageData
         */
        public $page_data;

        /**
         * Retrieves named block and stores it in page data
         *
         * @param string $name
         * @param PageData $page_data
         * @param string $route_id
         * @return void
         */
        public static function retrieve($name, $page_data, $route_id = '', $position = false, $weight = false, $more_params = array()) {
                $params = array(
                        'name' => $name,
                        'route_id' => $route_id
                );
                $params = array_merge($more_params, $params);
                
                $result = array();
                EventSource::Instance()->invoke_event('block', $params, $result);
                
                if ($page_data) {
                        foreach($result as $block) {
                                $page_data->add_block($block, $position, $weight);      
                        }
                }
                return $result;
        }

        public static function render_blocks($arr_blocks, $position = false) {
                $view = ViewFactory::create_view(IViewFactory::MESSAGE, 'widgets/blocks');
                $view->assign('blocks', $arr_blocks);
                $view->assign('position', $position);
                return $view->render();
        }
        
        /**
         * Output Blocks
         *
         * @param PageData $page_data
         * @param string $position
         * @return string
         */
        public static function output($page_data, $position = '') {
                $w = new WidgetBlock($page_data, $position);
                return $w->render();
        }
        
        public function __construct($page_data, $position) {
                $this->position = $position;
                $this->page_data = $page_data;
        }
        
        public function render($policy = self::NONE) {
                $this->page_data->sort_blocks();
                $arr_blocks = $this->page_data->get_blocks($this->position);
                return self::render_blocks($arr_blocks, $this->position);       
        }
}

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