/**
* This event handler lists all activated modules with the description
* of each module.
*
* @access public
* @param \Zepi\Turbo\Framework $framework
* @param \Zepi\Turbo\Request\WebRequest $request
* @param \Zepi\Turbo\Response\Response $response
*/
public function execute(Framework $framework, WebRequest $request, Response $response)
{
// Display the main css group
$this->assetCacheManager->displayAssetType(AssetManager::CSS);
// Display the main js group
$this->assetCacheManager->displayAssetType(AssetManager::JS);
}
/**
* Adds the needed headers and prepares the content
*
* @param \Zepi\Turbo\Response\Response $response
* @param string $type
* @param string $hash
* @param string $version
* @param string $content
*/
protected function deliverContent(Response $response, $type, $hash, $version, $content)
{
// Define the if modified since timestamp
$cachedAssetTimestamp = $this->assetCacheManager->getCachedAssetTimestamp($type, $hash, $version);
$ifModifiedSince = -1;
if ($this->isHeaderSetAndNotEmpty('HTTP_IF_MODIFIED_SINCE')) {
$ifModifiedSince = $_SERVER['HTTP_IF_MODIFIED_SINCE'];
}
// Define the etag
$eTag = md5($content);
$eTagHeader = -1;
if ($this->isHeaderSetAndNotEmpty('HTTP_IF_NONE_MATCH')) {
$eTagHeader = $_SERVER['HTTP_IF_NONE_MATCH'];
}
// Set the cache headers
$cacheTtl = 86400 * 365;
header('Last-Modified: ' . gmdate('D, d M Y H:i:s', $cachedAssetTimestamp) . ' GMT');
header('Expires: ' . gmdate("D, d M Y H:i:s", time() + $cacheTtl) . ' GMT');
header('Pragma: cache');
header('Etag: ' . $eTag);
header('Cache-Control: max-age=' . $cacheTtl);
// Verify the cached timestamp and the eTag
if ($cachedAssetTimestamp === $ifModifiedSince || $eTag === $eTagHeader) {
header('HTTP/1.1 304 Not Modified');
exit;
}
// Set the content type
$contentType = $this->getContentType($type, $version);
if ($contentType !== '') {
header('Content-type: ' . $contentType, true);
}
// Display the content
$response->setOutput($content);
}
/**
* Initializes and return an instance of the given class name.
*
* @access public
* @param string $className
* @return mixed
*/
public function getInstance($className)
{
switch ($className) {
case '\\Zepi\\Web\\General\\Manager\\AssetManager':
if ($this->assetManager === null) {
$this->assetManager = new $className($this->getDataObjectBackend('assets.data'), $this->framework->getRootDirectory());
$this->assetManager->initializeAssetManager();
}
return $this->assetManager;
break;
case '\\Zepi\\Web\\General\\Manager\\AssetCacheManager':
if ($this->assetCacheManager === null) {
// Get the cache backends
$path = $this->framework->getRootDirectory() . '/cache/';
$fileObjectBackend = new \Zepi\Turbo\Backend\FileObjectBackend($path . 'cachedFiles.data');
$fileBackend = new \Zepi\Turbo\Backend\FileBackend($path);
// CSS helper
$cssHelper = new \Zepi\Web\General\Helper\CssHelper($fileBackend);
// Load the configuration
$configurationManager = $this->framework->getInstance('\\Zepi\\Core\\Utils\\Manager\\ConfigurationManager');
$minifyAssets = $configurationManager->getSetting('assets.minifyAssets');
$combineAssetGroups = $configurationManager->getSetting('assets.combineAssetGroups');
$this->assetCacheManager = new $className($this->framework, $this->getInstance('\\Zepi\\Web\\General\\Manager\\AssetManager'), $fileObjectBackend, $fileBackend, $cssHelper, $minifyAssets, $combineAssetGroups);
$this->assetCacheManager->initializeAssetCacheManager();
}
return $this->assetCacheManager;
break;
case '\\Zepi\\Web\\General\\Manager\\TemplatesManager':
if ($this->templatesManager === null) {
$this->templatesManager = new $className($this->framework, $this->getDataObjectBackend('templates.data'));
$this->templatesManager->initializeTemplatesManager();
// Execute the register renderer event
$runtimeManager = $this->framework->getRuntimeManager();
$runtimeManager->executeEvent('\\Zepi\\Web\\General\\Event\\RegisterRenderers');
}
return $this->templatesManager;
break;
case '\\Zepi\\Web\\General\\Manager\\MenuManager':
case '\\Zepi\\Web\\General\\Manager\\MetaInformationManager':
return $this->framework->initiateObject($className, array(), true);
break;
default:
return $this->framework->initiateObject($className);
break;
}
}
/**
* Optimizes the urls in the css content.
*
* @access protected
* @param string $content
* @param string $file
* @return string
*/
protected function optimizeUrls($content, $file)
{
preg_match_all('/url\\((.[^\\)]*)\\)/is', $content, $matches, PREG_SET_ORDER);
foreach ($matches as $match) {
$uri = $match[1];
// Remove the apostrophs
if (strpos($uri, '\'') === 0 || strpos($uri, '"') === 0) {
$uri = substr($uri, 1, -1);
}
// If the uri is an absolute url we do not change anything
if (strpos($uri, 'http') === 0) {
continue;
}
$additionalData = $this->getAdditionalUriData($uri);
$uri = $this->removeAdditionalUriData($uri);
$path = dirname($file);
$fullFilePath = realpath($path . '/' . $uri);
$fileInformation = pathinfo($fullFilePath);
$imageExtensions = array('png', 'jpg', 'jpeg', 'gif');
if (in_array($fileInformation['extension'], $imageExtensions)) {
// Load the file content
$fileContent = $this->fileBackend->loadFromFile($fullFilePath);
// Encode the file content
$encodedContent = base64_encode($fileContent);
$urlData = 'data:image/gif;base64,' . $encodedContent;
// Replace the reference in the css content
$content = str_replace($match[1], '\'' . $urlData . '\'', $content);
} else {
$type = AssetManager::BINARY;
// Cache the file
$cachedFile = $this->assetCacheManager->generateCachedFile($type, $fullFilePath);
$url = $this->assetCacheManager->getUrlToTheAssetLoader($cachedFile['file']);
// Add the additional data
if ($additionalData !== '') {
$url .= $additionalData;
}
// Replace the reference in the css content
$content = str_replace($match[1], '\'' . $url . '\'', $content);
}
}
return $content;
}
/**
* This event handler clears the assets cache.
*
* @access public
* @param \Zepi\Turbo\Framework $framework
* @param \Zepi\Turbo\Request\CliRequest $request
* @param \Zepi\Turbo\Response\Response $response
*/
public function execute(Framework $framework, CliRequest $request, Response $response)
{
// Clean the asset cache
$this->assetCacheManager->clearAssetCache();
$response->setOutputPart('cacheCleared', 'The asset cache was successfully cleared!');
}