javascript($file);
}
/**
* Add the javascript code to the header of the page
*
* See {@link Requirements_Backend::customScript()} for more info
* @param script The script content
* @param uniquenessID Use this to ensure that pieces of code only get added once.
*/
static function customScript($script, $uniquenessID = null) {
self::backend()->customScript($script, $uniquenessID);
}
/**
* Include custom CSS styling to the header of the page.
*
* See {@link Requirements_Backend::customCSS()}
*
* @param string $script CSS selectors as a string (without \n";
}
foreach(array_diff_key($this->customHeadTags,$this->blocked) as $customHeadTag) {
$requirements .= "$customHeadTag\n";
}
if($this->write_js_to_body) {
// Remove all newlines from code to preserve layout
$jsRequirements = preg_replace('/>\n*/', '>', $jsRequirements);
// We put script tags into the body, for performance.
// If your template already has script tags in the body, then we put our script
// tags just before those. Otherwise, we put it at the bottom.
$p1 = strripos($content, ' $p2) {
$content = substr($content,0,$p1) . $jsRequirements . substr($content,$p1);
} else {
$content = preg_replace("/(<\/body[^>]*>)/i", $jsRequirements . "\\1", $content);
}
// Put CSS at the bottom of the head
$content = preg_replace("/(<\/head[^>]*>)/i", $requirements . "\\1", $content);
} else {
$content = preg_replace("/(<\/head[^>]*>)/i", $requirements . "\\1", $content);
$content = preg_replace("/(<\/head[^>]*>)/i", $jsRequirements . "\\1", $content);
}
}
if(isset($_GET['debug_profile'])) Profiler::unmark("Requirements::includeInHTML");
return $content;
}
/**
* Attach requirements inclusion to X-Include-JS and X-Include-CSS headers on the HTTP response
*/
function include_in_response(HTTPResponse $response) {
$this->process_combined_files();
$jsRequirements = array();
$cssRequirements = array();
foreach(array_diff_key($this->javascript, $this->blocked) as $file => $dummy) {
$path = $this->path_for_file($file);
if($path) $jsRequirements[] = $path;
}
$response->addHeader('X-Include-JS', implode(',', $jsRequirements));
foreach(array_diff_key($this->css,$this->blocked) as $file => $params) {
$path = $this->path_for_file($file);
if($path) $cssRequirements[] = isset($params['media']) ? "$path:##:$params[media]" : $path;
}
$response->addHeader('X-Include-CSS', implode(',', $cssRequirements));
}
/**
* Add i18n files from the given javascript directory. Sapphire expects that the given directory
* will contain a number of java script files named by language: en_US.js, de_DE.js, etc.
* @param $langDir The javascript lang directory, relative to the site root, e.g., 'sapphire/javascript/lang'
*/
public function add_i18n_javascript($langDir) {
if(i18n::get_js_i18n()) {
// Include i18n.js even if no languages are found. The fact that
// add_i18n_javascript() was called indicates that the methods in
// here are needed.
$this->javascript(SAPPHIRE_DIR . '/javascript/i18n.js');
if(substr($langDir,-1) != '/') $langDir .= '/';
$this->javascript($langDir . i18n::default_locale() . '.js');
$this->javascript($langDir . i18n::get_locale() . '.js');
// Stub i18n implementation for when i18n is disabled.
} else {
$this->javascript[SAPPHIRE_DIR . '/javascript/i18nx.js'] = true;
}
}
/**
* Finds the path for specified file.
*
* @param string $fileOrUrl
* @return string|boolean
*/
protected static function path_for_file($fileOrUrl) {
if(preg_match('/^http[s]?/', $fileOrUrl)) {
return $fileOrUrl;
} elseif(Director::fileExists($fileOrUrl)) {
$prefix = Director::absoluteBaseURL();
$mtimesuffix = "";
$suffix = '';
if(strpos($fileOrUrl, '?') !== false) {
$suffix = '&' . substr($fileOrUrl, strpos($fileOrUrl, '?')+1);
$fileOrUrl = substr($fileOrUrl, 0, strpos($fileOrUrl, '?'));
}
if(Requirements::get_suffix_requirements()) {
$mtimesuffix = "?m=" . filemtime(Director::baseFolder() . '/' . $fileOrUrl);
}
return "{$prefix}{$fileOrUrl}{$mtimesuffix}{$suffix}";
} else {
return false;
}
}
/**
* Concatenate several css or javascript files into a single dynamically generated
* file (stored in {@link Director::baseFolder()}). This increases performance
* by fewer HTTP requests.
*
* The combined file is regenerated
* based on every file modification time. Optionally a rebuild can be triggered
* by appending ?flush=1 to the URL.
* If all files to be combined are javascript, we use the external JSMin library
* to minify the javascript. This can be controlled by {@link $combine_js_with_jsmin}.
*
* All combined files will have a comment on the start of each concatenated file
* denoting their original position. For easier debugging, we recommend to only
* minify javascript if not in development mode ({@link Director::isDev()}).
*
* CAUTION: You're responsible for ensuring that the load order for combined files
* is retained - otherwise combining javascript files can lead to functional errors
* in the javascript logic, and combining css can lead to wrong styling inheritance.
* Depending on the javascript logic, you also have to ensure that files are not included
* in more than one combine_files() call.
* Best practice is to include every javascript file in exactly *one* combine_files()
* directive to avoid the issues mentioned above - this is enforced by this function.
*
* CAUTION: Combining CSS Files discards any "media" information.
*
* Example for combined JavaScript:
*
* Requirements::combine_files(
* 'foobar.js',
* array(
* 'mysite/javascript/foo.js',
* 'mysite/javascript/bar.js',
* )
* );
*
*
* Example for combined CSS:
*
* Requirements::combine_files(
* 'foobar.css',
* array(
* 'mysite/javascript/foo.css',
* 'mysite/javascript/bar.css',
* )
* );
*
*
* @see http://code.google.com/p/jsmin-php/
*
* @todo Should we enforce unique inclusion of files, or leave it to the developer? Can auto-detection cause breaks?
*
* @param string $combinedFileName Filename of the combined file (will be stored in {@link Director::baseFolder()} by default)
* @param array $files Array of filenames relative to the webroot
*/
function combine_files($combinedFileName, $files) {
// duplicate check
foreach($this->combine_files as $_combinedFileName => $_files) {
$duplicates = array_intersect($_files, $files);
if($duplicates) {
user_error("Requirements::combine_files(): Already included files " . implode(',', $duplicates) . " in combined file '{$_combinedFileName}'", E_USER_NOTICE);
return false;
}
}
$this->combine_files[$combinedFileName] = $files;
}
/**
* Returns all combined files.
* @return array
*/
function get_combine_files() {
return $this->combine_files;
}
/**
* Deletes all dynamically generated combined files from the filesystem.
*
* @param string $combinedFileName If left blank, all combined files are deleted.
*/
function delete_combined_files($combinedFileName = null) {
$combinedFiles = ($combinedFileName) ? array($combinedFileName => null) : $this->combine_files;
foreach($combinedFiles as $combinedFile => $sourceItems) {
$filePath = Director::baseFolder() . '/' . $combinedFile;
if(file_exists($filePath)) {
unlink($filePath);
}
}
}
function clear_combined_files() {
$this->combine_files = array();
}
/**
* See {@link combine_files()}
*
*/
function process_combined_files() {
// The class_exists call prevents us from loading SapphireTest.php (slow) just to know that
// SapphireTest isn't running :-)
if(class_exists('SapphireTest',false)) $runningTest = SapphireTest::is_running_test();
else $runningTest = false;
if((Director::isDev() && !$runningTest) || !Requirements::get_combined_files_enabled()) {
return;
}
// Make a map of files that could be potentially combined
$combinerCheck = array();
foreach($this->combine_files as $combinedFile => $sourceItems) {
foreach($sourceItems as $sourceItem) {
if(isset($combinerCheck[$sourceItem]) && $combinerCheck[$sourceItem] != $combinedFile){
user_error("Requirements::process_combined_files - file '$sourceItem' appears in two combined files:" . " '{$combinerCheck[$sourceItem]}' and '$combinedFile'", E_USER_WARNING);
}
$combinerCheck[$sourceItem] = $combinedFile;
}
}
// Figure out which ones apply to this pageview
$combinedFiles = array();
$newJSRequirements = array();
$newCSSRequirements = array();
foreach($this->javascript as $file => $dummy) {
if(isset($combinerCheck[$file])) {
$newJSRequirements[$combinerCheck[$file]] = true;
$combinedFiles[$combinerCheck[$file]] = true;
} else {
$newJSRequirements[$file] = true;
}
}
foreach($this->css as $file => $params) {
if(isset($combinerCheck[$file])) {
$newCSSRequirements[$combinerCheck[$file]] = true;
$combinedFiles[$combinerCheck[$file]] = true;
} else {
$newCSSRequirements[$file] = $params;
}
}
// Process the combined files
$base = Director::baseFolder() . '/';
foreach(array_diff_key($combinedFiles,$this->blocked) as $combinedFile => $dummy) {
$fileList = $this->combine_files[$combinedFile];
// Determine if we need to build the combined include
if(file_exists($base . $combinedFile) && !isset($_GET['flush'])) {
// file exists, check modification date of every contained file
$srcLastMod = 0;
foreach($fileList as $file) {
$srcLastMod = max(filemtime($base . $file), $srcLastMod);
}
$refresh = $srcLastMod > filemtime($base . $combinedFile);
} else {
// file doesn't exist, or refresh was explicitly required
$refresh = true;
}
if(!$refresh) continue;
$combinedData = "";
foreach(array_diff($fileList,$this->blocked) as $file) {
$fileContent = file_get_contents($base . $file);
// if we have a javascript file and jsmin is enabled, minify the content
$isJS = stripos($file, '.js');
if($isJS && $this->combine_js_with_jsmin) {
require_once('thirdparty/jsmin/JSMin.php');
increase_time_limit_to();
$fileContent = JSMin::minify($fileContent);
}
// write a header comment for each file for easier identification and debugging
// also the semicolon between each file is required for jQuery to be combinable properly
$combinedData .= "/****** FILE: $file *****/\n" . $fileContent . "\n".($isJS ? ';' : '')."\n";
}
if(!file_exists(dirname($base . $combinedFile))) {
Filesystem::makeFolder(dirname($base . $combinedFile));
}
$successfulWrite = false;
$fh = fopen($base . $combinedFile, 'w');
if($fh) {
if(fwrite($fh, $combinedData) == strlen($combinedData)) $successfulWrite = true;
fclose($fh);
unset($fh);
}
// Unsuccessful write - just include the regular JS files, rather than the combined one
if(!$successfulWrite) {
user_error("Requirements_Backend::process_combined_files(): Couldn't create '$base$combinedFile'", E_USER_WARNING);
return;
}
}
// @todo Alters the original information, which means you can't call this
// method repeatedly - it will behave different on the second call!
$this->javascript = $newJSRequirements;
$this->css = $newCSSRequirements;
}
function get_custom_scripts() {
$requirements = "";
if($this->customScript) {
foreach($this->customScript as $script) {
$requirements .= "$script\n";
}
}
return $requirements;
}
/**
* Register the given "themeable stylesheet" as required.
* Themeable stylesheets have globally unique names, just like templates and PHP files.
* Because of this, they can be replaced by similarly named CSS files in the theme directory.
*
* @param $name String The identifier of the file. For example, css/MyFile.css would have the identifier "MyFile"
* @param $media String Comma-separated list of media-types (e.g. "screen,projector")
*/
function themedCSS($name, $media = null) {
global $_CSS_MANIFEST;
$theme = SSViewer::current_theme();
if($theme && isset($_CSS_MANIFEST[$name]) && isset($_CSS_MANIFEST[$name]['themes'])
&& isset($_CSS_MANIFEST[$name]['themes'][$theme]))
Requirements::css($_CSS_MANIFEST[$name]['themes'][$theme], $media);
else if(isset($_CSS_MANIFEST[$name]) && isset($_CSS_MANIFEST[$name]['unthemed'])) $this->css($_CSS_MANIFEST[$name]['unthemed'], $media);
// Normal requirements fails quietly when there is no css - we should do the same
// else user_error("themedCSS - No CSS file '$name.css' found.", E_USER_WARNING);
}
function debug() {
Debug::show($this->javascript);
Debug::show($this->css);
Debug::show($this->customCSS);
Debug::show($this->customScript);
Debug::show($this->customHeadTags);
Debug::show($this->combine_files);
}
}
?>