_first_script))
return ;
if (self::$_ajax_already_there)
return ;
$ajax_script = $this->get_ajax_script();
wp_add_inline_script($this->_first_script, $ajax_script, 'before');
}
/**
* @param string : name of the file, with its path from its extension directory
* - from js/ root for .js files
* - from css/ root for .css files
* @return object / null :
* - null if file is not js or css
* - or an object with all the necessary infos :
* - ext : name.js -> "js"
* - basename : name.js -> "name"
* - handle : name.js -> "name_js"
* - url : url to file in wordpress
* - path : path to file in server
* - version : used to avoid browser caching
*/
private function init_file($file_name) {
$file = (object)[];
$file->ext = pathinfo($file_name, PATHINFO_EXTENSION);
if ($file->ext === "js")
$dir_path = 'js/';
else if ($file->ext === "css")
$dir_path = 'css/';
else
return null;
$file->basename = pathinfo($file_name, PATHINFO_FILENAME);
$file->handle = str_replace(".", "_", $file_name);
$file->url = $this->get_url().$dir_path.$file_name;
$file->path = $this->get_path().$dir_path.$file_name;
$file->version = date("ymd-Gis", filemtime($file->path));
return $file;
}
/**
* @param array : list of files :
* - with their path from root of their type of file (ex: from js/ to .js files)
* - and with their extension
* @param boolean
* - to add ajax script and variables
* - default to true
*/
public function add_files_to_front($files_arr, $add_ajax = true) {
//wp_enqueue_script(, /url/to/file, [depends on], version, defer? );
//wp_enqueue_style( , /url/to/file, [depends on], version, media );
$previous_css_basename = '';
$previous_js_basename = '';
foreach ($files_arr as $file_name) {
$file = $this->init_file($file_name);
if ($file->ext === "js") {
if (is_null($this->_first_script))
$this->_first_script = $file->handle;
wp_enqueue_script( $file->handle, $file->url, $previous_js_basename, $file->version, true);
$previous_js_basename = $file->basename;
}
else if ($file->ext === "css") {
wp_enqueue_style( $file->handle, $file->url, $previous_css_basename, $file->version, '');
$previous_css_basename = $file->basename;
}
}
if ($add_ajax === true)
$this->add_ajax_script();
}
/**
* pass variables to js front as global variables
* @param array : list of key => value
* with the key being name of the variable, like this :
* 'my_var' => 'value',
* simpler way to do it is to use compact when calling the function :
* add_var_to_front(compact("var1", "var2", "var3"));
* @param string (optionnal) : name of first embended script that need these variables
* (it will be available to this script and all followings)
* this name is the filename + "_" + extension :
* init.js -> init_js
*/
public function add_var_to_front($vars, $handle = null) {
if (is_null($handle)) {
$handle = $this->_first_script;
}
extract($vars);
foreach ($vars as $key => $var)
{
$js_var = 'let '.$key.' = '.json_encode($var).';';
wp_add_inline_script($handle, $js_var, 'before');
}
// the other way with localize has multiple incidences :
// - it creates an object from wich you can access the variables
// - so if you call it again wiht the same name, it will overwrite the previous
// {
// $handle = pathinfo($handle, PATHINFO_FILENAME);
// $object_name = "php_data";
//
// wp_localize_script($handle, $object_name, $vars);
// }
}
/**
* @param two arguments :
* 1. html files to include in front
* - can be a string of 1 filename
* - or an array of strings of filenames
* ( https://stackoverflow.com/q/4747876/9497573 )
* - it's probably better to only add 1 file, and let it include other files
* 2. list of variables to make available to this files
* - in the form of key => val
* - recommanded to do it with compact()
* ex: create_html( "file.html", compact("var1","var2",) );
* ex: create_html( array("file1.html", "file2.html"), array("var1"=>"value") );
* @return a string of html code
*
* using ob_start() and ob_get_clean()
* allows to have php expansion inside the html loaded
* in opposition to the methode file_get_contents()
*
* https://stackoverflow.com/a/4402045/9497573
*/
function create_html($files, $vars = null) {
$files = (array)$files;
$html_dir = $this->get_path().'html/';
if (!is_null($vars))
extract($vars);
ob_start();
foreach($files as $file) {
include($html_dir.$file);
}
$html = ob_get_clean();
return $html;
}
}
?>