<?php
/**
* Updraft Theme.
*/
if (!defined('ABSPATH')) die('Access denied.');
define('TU_THEME_DIR', dirname(__FILE__));
define('TU_THEME_URL', trailingslashit(plugins_url('', __FILE__)));
class TU_Theme {
const VERSION = '0.1';
protected static $_instance = null;
/**
* Creates an instance of this class. Singleton Pattern
*
* @return object Instance of this class
*/
public static function instance() {
if (empty(self::$_instance)) {
self::$_instance = new self();
}
return self::$_instance;
}
/**
* Returns the version to use when enqueueing or loading scripts and styles.
* If WP_DEBUG is on then time is padded to the VERSION constant.
*
* @return string
*/
private function get_enqueue_version() {
return (defined('WP_DEBUG') && WP_DEBUG) ? self::VERSION.'.'.time() : self::VERSION;
}
/**
* Load the components on the front-end of the site.
*
* @return void
*/
public function load_assets_on_frontend() {
add_action('wp_enqueue_scripts', array($this, 'load_css'), 20);
add_action('wp_enqueue_scripts', array($this, 'load_js'), 20);
}
/**
* Load the components on the wp-admin(backend) of the site.
*
* @return void
*/
public function load_assets_on_backend() {
add_action('admin_enqueue_scripts', array($this, 'load_css'), 20);
add_action('admin_enqueue_scripts', array($this, 'load_js'), 20);
}
/**
* Returns all the handlebar template's contents keyed by their path and name.
*
* @return array
*/
public function get_handlebar_templates() {
$base_directory = TU_THEME_DIR . '/components/';
$templates_array = array();
// Recursive directory iterator to find all .handlebars.html files
$iterator = new RecursiveIteratorIterator(
new RecursiveDirectoryIterator($base_directory),
RecursiveIteratorIterator::SELF_FIRST
);
foreach ($iterator as $file) {
// Check for '.' and '..' and skip them.
if ($file->getFilename() === '.' || $file->getFilename() === '..') {
continue;
}
if ($file->isFile() && preg_match('/\.handlebars\.html$/', $file->getFilename())) {
// Get relative path from base directory
$relative_path = str_replace($base_directory, '', $file->getPathname());
// Remove extension
$relative_path = preg_replace('/\.handlebars\.html$/', '', $relative_path);
// Replace directory separators with hyphens
$key = str_replace(DIRECTORY_SEPARATOR, '-', $relative_path);
// Store file contents
$templates_array[$key] = file_get_contents($file->getPathname());
}
}
return $templates_array;
}
/**
* Load CSS.
*/
public function load_css() {
$enqueue_version = $this->get_enqueue_version();
// Global critical styles.
wp_enqueue_style('tu-global-theme', TU_THEME_URL.'theme.css', array(), $enqueue_version);
// Allow projects to opt-out from theme colors and enqueue there own colors.
if (apply_filters('tu_theme_load_colors', true)) {
wp_enqueue_style('tu-theme-colors', TU_THEME_URL.'theme-colors.css', array(), $enqueue_version);
}
}
/**
* Load JS.
*/
public function load_js() {
$enqueue_version = $this->get_enqueue_version();
wp_enqueue_script('tu-theme-handlebars-library', TU_THEME_URL . 'handlebar-library/handlebars.min.js', array(), $enqueue_version, false);
wp_enqueue_script('tu-theme', TU_THEME_URL . 'theme.js', array('tu-theme-handlebars-library'), $enqueue_version, false);
wp_localize_script(
'tu-theme',
'TU_Theme',
array(
'handlebar_templates' => $this->get_handlebar_templates(),
)
);
}
}