mirror of
https://github.com/lubuntu-team/lubuntu.me.git
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113 lines
3.0 KiB
PHP
113 lines
3.0 KiB
PHP
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<?php
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/**
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* Autoloader for widget field classes.
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*
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* Class SiteOrigin_Field_Class_Loader
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*/
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class SiteOrigin_Widget_Field_Class_Loader {
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private $class_prefixes;
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private $class_paths;
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function __construct(){
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// Setup the loader with default prefixes and paths
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$this->add_class_prefixes( array( 'SiteOrigin_Widget_Field_' ), 'base' );
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$this->add_class_paths( array( plugin_dir_path( __FILE__ ) ), 'base' );
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spl_autoload_register( array( $this, 'load_field_class' ) );
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}
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static function single(){
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static $single;
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if( empty( $single ) ) {
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$single = new SiteOrigin_Widget_Field_Class_Loader();
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}
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return $single;
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}
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/**
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* Regsiter class prefixes to watch for in this loader
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*
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* @param string|array $class_prefixes
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* @param string $group
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*/
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public function add_class_prefixes( $class_prefixes, $group = 'base' ) {
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if( !isset( $this->class_prefixes ) ) $this->class_prefixes = array();
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if( !isset( $this->class_prefixes[$group] ) ) $this->class_prefixes[$group] = array();
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$this->class_prefixes[$group] = array_merge(
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$this->class_prefixes[$group],
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$class_prefixes
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);
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$this->class_prefixes[$group] = array_unique( $this->class_prefixes[$group] );
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}
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/**
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* Register paths where we'll look for these classes.
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*
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* @param string|array $class_paths
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* @param string $group
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*/
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public function add_class_paths( $class_paths, $group = 'base' ) {
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if( !isset( $this->class_paths ) ) $this->class_paths = array();
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if( !isset( $this->class_paths[$group] ) ) $this->class_paths[$group] = array();
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$this->class_paths[$group] = array_merge(
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$this->class_paths[$group],
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$class_paths
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);
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$this->class_paths[$group] = array_unique( $this->class_paths[$group] );
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}
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/**
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* Load a class field. This is registered with spl_autoload_register
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*
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* @param $field_classname
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*/
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public function load_field_class( $field_classname ) {
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$valid_classname = false;
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$class_prefix = '';
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$class_group = '';
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foreach ( $this->class_prefixes as $class_group => $class_prefixes ) {
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foreach( $class_prefixes as $class_prefix ) {
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$valid_classname = strpos( $field_classname, $class_prefix ) !== false;
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if( $valid_classname ) {
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break 2;
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}
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}
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}
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if ( ! $valid_classname ) return;
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$filename = strtolower( str_replace( '_', '-', str_replace( $class_prefix, '', $field_classname ) ) );
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if( empty( $this->class_paths[$class_group] ) ) return;
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foreach( $this->class_paths[$class_group] as $class_path ) {
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$filepath = $class_path . $filename . '.class.php';
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if ( file_exists( $filepath ) ) {
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require_once $filepath;
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continue;
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}
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}
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}
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/**
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* Initialize and register the class field loader
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*/
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public function extend(){
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$this->add_class_prefixes(
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apply_filters( 'siteorigin_widgets_field_class_prefixes', array() ),
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'base'
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);
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$this->add_class_paths(
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apply_filters( 'siteorigin_widgets_field_class_paths', array() ),
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'base'
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);
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}
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}
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add_action( 'init', array( SiteOrigin_Widget_Field_Class_Loader::single(), 'extend' ) );
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