<?php
/**
* Including Login template as a page template.
*
* @package LoginCustomizer
* @author WPBrigade
* @copyright Copyright (c) 2021, WPBrigade
* @link https://loginpress.pro/
* @license https://www.gnu.org/licenses/old-licenses/gpl-2.0.html
* @since 2.2.0
* @version 2.2.0
*
*/
class LoginCustomizerTemplate {
/**
* A reference to an instance of this class.
*/
private static $instance;
/**
* The array of templates that this plugin tracks.
*/
protected $templates;
/**
* Returns an instance of this class.
*/
public static function get_instance() {
if ( null == self::$instance ) {
self::$instance = new LoginCustomizerTemplate();
}
return self::$instance;
}
/**
* Initializes the plugin by setting filters and administration functions.
*/
private function __construct() {
$this->templates = array();
// Add a filter to the attributes metabox to inject template into the cache.
if ( version_compare( floatval( get_bloginfo( 'version' ) ), '4.7', '<' ) ) {
// 4.6 and older
add_filter( 'page_attributes_dropdown_pages_args', array( $this, 'register_project_templates' ) );
} else {
// Add a filter to the wp 4.7 version attributes metabox
add_filter( 'theme_page_templates', array( $this, 'add_new_template' ) );
}
// Add a filter to the save post to inject out template into the page cache
add_filter( 'wp_insert_post_data', array( $this, 'register_project_templates' ) );
// Add a filter to the template include to determine if the page has our
// template assigned and return it's path
add_filter( 'template_include', array( $this, 'view_project_template') );
add_action( 'init', array( $this, 'login_customizer_temp_init') );
}
/**
* Adds our template to the page dropdown for v4.7+
*
* @since 2.1.0
* @version 2.3.2
*/
public function add_new_template( $posts_templates ) {
$page = get_page_by_path( 'login-customizer' );
$admin_page = isset( $_GET['post'] ) && $page->ID == sanitize_text_field( $_GET['post'] );
$customizer_page = isset( $_GET['autofocus[panel]'] ) && 'logincust_panel' == sanitize_text_field( $_GET['autofocus[panel]'] );
if ( $admin_page || $customizer_page ) {
$posts_templates = array_merge( $posts_templates, $this->templates );
}
return $posts_templates;
}
/**
* init callback
* Used to initialize the login customizer template
*
* @since 2.5.2
*/
public function login_customizer_temp_init() {
// Add your templates to this array.
$this->templates = array( 'template-login-customizer.php' => __( 'Login Customizer Template', 'login-customizer' ), );
}
/**
* Adds our template to the pages cache in order to trick WordPress
* into thinking the template file exists where it doesn't really exist.
*/
public function register_project_templates( $atts ) {
// Create the key used for the themes cache
$cache_key = 'page_templates-' . md5( get_theme_root() . '/' . get_stylesheet() );
// Retrieve the cache list.
// If it doesn't exist, or it's empty prepare an array
$templates = wp_get_theme()->get_page_templates();
if ( empty( $templates ) ) {
$templates = array();
}
// New cache, therefore remove the old one
wp_cache_delete( $cache_key, 'themes' );
// Now add our template to the list of templates by merging our templates
// with the existing templates array from the cache.
$templates = array_merge( $templates, $this->templates );
// Add the modified cache to allow WordPress to pick it up for listing
// available templates
wp_cache_add( $cache_key, $templates, 'themes', 1800 );
return $atts;
}
/**
* Checks if the template is assigned to the page
*/
public function view_project_template( $template ) {
// Get global post
global $post;
// Return template if post is empty
if ( ! $post ) {
return $template;
}
// Return default template if we don't have a custom one defined
if ( ! isset(
$this->templates[ get_post_meta( $post->ID, '_wp_page_template', true ) ] ) ) {
return $template;
}
$file = plugin_dir_path( __FILE__ ) . get_post_meta( $post->ID, '_wp_page_template', true );
// Just to be safe, we check if the file exist first
if ( file_exists( $file ) ) {
return $file;
} else {
echo $file;
}
// Return template
return $template;
}
}
add_action( 'plugins_loaded', array( 'LoginCustomizerTemplate', 'get_instance' ) );