<?php
/**
* @author ThemePunch <info@themepunch.com>
* @link https://www.themepunch.com/
* @copyright 2019 ThemePunch
*/
if( !defined( 'ABSPATH') ) exit();
class RevSliderPageTemplate {
/**
* 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::$instance = new RevSliderPageTemplate();
}
return self::$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.
add_filter(
'page_attributes_dropdown_pages_args',
array( $this, 'register_project_templates' )
);
// 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 your templates to this array.
$this->templates = array(
'../public/views/revslider-page-template.php' => 'Slider Revolution Blank Template',
);
// Fix for WP 4.7
add_filter( 'theme_page_templates', array($this, 'register_project_templates_new' ) );
// Add filters to the attributes metabox to inject templates to all posts
$types = get_post_types( [], 'objects' );
foreach ( $types as $type => $values ) {
if ( isset( $type ) ) {
$type_name = 'theme_' . $type . '_templates';
add_filter( $type_name , array( $this, 'add_post_templates' ));
}
}
}
// Adds our template to the new post templates setting (WP >= 4.7)
public function register_project_templates_new( $post_templates ) {
$post_templates = array_merge( $post_templates, $this->templates );
return $post_templates;
}
public function add_post_templates( $templates ) {
$my_virtual_templates = array(
'../public/views/revslider-page-template.php' => 'Slider Revolution Blank Template',
);
// Merge with any templates already available
$templates = array_merge( $templates, $my_virtual_templates );
return $templates;
}
/**
* Adds our template to the pages cache in order to trick WordPress
* into thinking the template file exists where it doens'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 ) {
global $post;
if(!isset($post->ID)) return $template;
if (!isset($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;
}
}
?>