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<?php

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/**

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* @author ThemePunch <info@themepunch.com>

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* @link https://www.themepunch.com/

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if( !defined( 'ABSPATH') ) exit();

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class RevSliderPageTemplate {

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/**

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* A reference to an instance of this class.

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private static $instance;

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/**

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* The array of templates that this plugin tracks.

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protected $templates;

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/**

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* Returns an instance of this class.

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public static function get_instance(){

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if(null == self::$instance) self::$instance = new RevSliderPageTemplate();

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return self::$instance;

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}

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/**

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* Initializes the plugin by setting filters and administration functions.

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private function __construct(){

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$this->templates = array();

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// Add a filter to the attributes metabox to inject template into the cache.

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add_filter('page_attributes_dropdown_pages_args', array( $this, 'register_project_templates'));

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// Add a filter to the save post to inject out template into the page cache

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add_filter('wp_insert_post_data', array($this, 'register_project_templates'));

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// Add a filter to the template include to determine if the page has our

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// template assigned and return it's path

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add_filter('template_include', array($this, 'view_project_template'));

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// Add your templates to this array.

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$this->templates = array('../public/views/revslider-page-template.php' => 'Slider Revolution Blank Template');

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// Fix for WP 4.7

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add_filter('theme_page_templates', array($this, 'register_project_templates_new'));

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// Add filters to the attributes metabox to inject templates to all posts

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$types = get_post_types([], 'objects');

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foreach($types as $type => $values){

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if(isset($type)) add_filter('theme_' . $type . '_templates', array($this, 'add_post_templates'));

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}

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}

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// Adds our template to the new post templates setting (WP >= 4.7)

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public function register_project_templates_new($post_templates){

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return array_merge($post_templates, $this->templates);

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}

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public function add_post_templates($templates){

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$my_virtual_templates = array('../public/views/revslider-page-template.php' => 'Slider Revolution Blank Template');

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return array_merge($templates, $my_virtual_templates);

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}

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/**

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* Adds our template to the pages cache in order to trick WordPress

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* into thinking the template file exists where it doens't really exist.

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public function register_project_templates($atts){

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// Create the key used for the themes cache

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$cache_key = 'page_templates-' . md5(get_theme_root() . '/' . get_stylesheet());

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// Retrieve the cache list.

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// If it doesn't exist, or it's empty prepare an array

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$templates = wp_get_theme()->get_page_templates();

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if(empty($templates)) $templates = array();

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// New cache, therefore remove the old one

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wp_cache_delete($cache_key , 'themes');

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// Now add our template to the list of templates by merging our templates

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// with the existing templates array from the cache.

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$templates = array_merge($templates, $this->templates);

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// Add the modified cache to allow WordPress to pick it up for listing

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// available templates

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wp_cache_add($cache_key, $templates, 'themes', 1800);

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return $atts;

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}

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/**

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* Checks if the template is assigned to the page

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public function view_project_template($template){

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if(is_search()) return $template; //fix for search issue (B-5798177839)

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global $post;

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if(!isset($post->ID)) return $template;

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if(!isset($this->templates[get_post_meta(

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$post->ID, '_wp_page_template', true

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)])){

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return $template;

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}

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$file = plugin_dir_path(__FILE__). get_post_meta($post->ID, '_wp_page_template', true);

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// Just to be safe, we check if the file exist first

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if(file_exists($file)){

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return $file;

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}else{

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echo $file;

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}

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return $template;

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}

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}

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