public function aggregate($collection)
    {
        // Ensure the collection is materialized.
        $collection = $this->mirror->materializeCollection($collection);

        // Create aggregate collection to accumulate style sheets.
        $aggregate = new StyleAggregate();
        foreach ($collection as $resource) {
            if ($resource instanceof MaterializedResource) {
                $internalResource = $resource->getResource();
                $mediaType = 'all';
                if ($internalResource instanceof CssResource) {
                    $mediaType = $internalResource->getMediaType();
                }
                $aggregate->addStyle($resource, $mediaType);
            }
        }

        // Create resource with the aggregate style sheet.
        $data = $aggregate->getAggregateStyle();
        $hash = sha1($data);
        $file = $this->prefix.$hash.'.css';
        $resource = new LocalResource($file, $data);
        return $resource;
    }
public function aggregate($collection)
    {
        // Ensure the collection is materialized.
        $collection = $this->mirror->materializeCollection($collection);

        // Create aggregate collection to accumulate style sheets.
        $aggregate = new StyleAggregate();
        foreach ($collection as $resource) {
            if ($resource instanceof MaterializedResource) {
                $internalResource = $resource->getResource();
                $mediaType = 'all';
                if ($internalResource instanceof CssResource) {
                    $mediaType = $internalResource->getMediaType();
                }
                $aggregate->addStyle($resource, $mediaType);
            }
        }

        // Create resource with the aggregate style sheet.
        $data = $aggregate->getAggregateStyle();
        $hash = sha1($data);
        $file = $this->prefix.$hash.'.css';
        $resource = new LocalResource($file, $data);
        return $resource;
    }
public function aggregate ( $ collection ) { // Ensure the collection is materialized. $ collection = $ this -> mirror -> materializeCollection ( $ collection ) ; // Create aggregate collection to accumulate style sheets. $ aggregate = new StyleAggregate ( ) ; foreach ( $ collection as $ resource ) { if ( $ resource instanceof MaterializedResource ) { $ internalResource = $ resource -> getResource ( ) ; $ mediaType = 'all' ; if ( $ internalResource instanceof CssResource ) { $ mediaType = $ internalResource -> getMediaType ( ) ; } $ aggregate -> addStyle ( $ resource , $ mediaType ) ; } } // Create resource with the aggregate style sheet. $ data = $ aggregate -> getAggregateStyle ( ) ; $ hash = sha1 ( $ data ) ; $ file = $ this -> prefix . $ hash . '.css' ; $ resource = new LocalResource ( $ file , $ data ) ; return $ resource ; }
Aggregates a collection of CSS resources.

@param Collection $collection
@return LocalResource
Aggregates a collection of CSS resources .