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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 RevSliderCache extends RevSliderFunctions {

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public $cache_enabled = false;

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/**

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* holds transient additions that the slider is using

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**/

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private $cache_additions = array('action' => array(), 'filter' => array(), 'html' => array(), 'special' => array());

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private $output_html = array();

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public function __construct(){

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$globals = $this->get_global_settings();

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$this->cache_enabled = ($this->_truefalse($this->get_val($globals, 'internalcaching')) === true) ? true : false;

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}

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public function is_enabled(){

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return $this->cache_enabled;

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}

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/**

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* define which slider types are supported

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* no social streams are supported

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**/

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public function is_supported_type($type){

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return (in_array($type, array('post', 'posts', 'specific_posts', 'specific_post', 'current_post', 'woocommerce', 'woo', 'gallery'), true)) ? true : false;

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}

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public function clear_all_transients(){

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global $wpdb;

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$return = $wpdb->query("DELETE FROM ". $wpdb->prefix . 'options' ." WHERE `option_name` LIKE '_transient_revslider_slider_%'");

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$wpdb->query("DELETE FROM ". $wpdb->prefix . 'options' ." WHERE `option_name` LIKE '_transient_timeout_revslider_slider_%'");

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return $return;

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}

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/**

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* clears all transients that are from a certain slider

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* @since: 6.4.7

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**/

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public function clear_transients_by_slider($sid){

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global $wpdb;

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$return = false;

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$sid = intval($sid);

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if($sid > 0){

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$return = $wpdb->query($wpdb->prepare("DELETE FROM ". $wpdb->prefix . 'options' ." WHERE `option_name` LIKE '_transient_revslider_slider_%d%%'", $sid));

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$wpdb->query($wpdb->prepare("DELETE FROM ". $wpdb->prefix . 'options' ." WHERE `option_name` LIKE '_transient_timeout_revslider_slider_%d%%'", $sid));

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}

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return $return;

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}

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public function get_additions(){

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return $this->cache_additions;

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}

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public function add_addition($type, $name = false, $output = '', $priority = 10){

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if($output === '') return;

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if(!isset($this->cache_additions[$type])) $this->cache_additions[$type] = array();

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if($name === false){

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$this->cache_additions[$type][] = $output;

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}else{

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if(!isset($this->cache_additions[$type][$name])) $this->cache_additions[$type][$name] = array();

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if($type === 'special'){

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$this->cache_additions[$type][$name][] = $output;

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}else{

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$this->cache_additions[$type][$name][] = array(

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'html' => $output,

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'priority' => $priority

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);

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}

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}

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}

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/**

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* replace HTML placeholders with their corresponding value

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**/

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public function do_html_changes($html){

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//$html = str_replace('##NONCE##', wp_create_nonce('RevSlider_Front'), $html);

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return $html;

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}

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/**

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* this will push all the additions to the output that can not be cached

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* @since: 6.4.7

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**/

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public function do_additions($additions, $output){

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$t_actions = $this->get_val($additions, 'action', array());

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if(!empty($t_actions)){

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foreach($t_actions as $_action => $t_a){

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if(!empty($t_a)){

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foreach($t_a as $t_sa){

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if(!isset($this->output_html[$_action])) $this->output_html[$_action] = array();

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$this->output_html[$_action][] = $t_sa;

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add_action($_action, array($this, 'print_addition'));

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}

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}

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}

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}

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$t_filters = $this->get_val($additions, 'filter', array());

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if(!empty($t_filters)){

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foreach($t_filters as $_filter => $t_a){

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if(!empty($t_a)){

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foreach($t_a as $t_sa){

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if(!isset($this->output_html[$_filter])) $this->output_html[$_filter] = array();

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$this->output_html[$_filter][] = $t_sa;

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add_filter($_filter, array($this, 'print_addition'));

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}

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}

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}

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}

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$t_special = $this->get_val($additions, 'special', array());

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if(!empty($t_special)){

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$_rs_css_collection = $this->get_val($t_special, 'rs_css_collection', array());

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if(!empty($_rs_css_collection)){

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global $SR_GLOBALS;

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$SR_GLOBALS['collections']['css'] = $_rs_css_collection;

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}

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$_font_var = $this->get_val($t_special, 'font_var', array());

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if(!empty($_font_var)){

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global $SR_GLOBALS;

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foreach($_font_var as $fw){

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if(!isset($SR_GLOBALS['icon_sets'][$fw])) $SR_GLOBALS['icon_sets'][$fw] = array('css' => false, 'parsed' => false);

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$SR_GLOBALS['icon_sets'][$fw]['css'] = true;

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}

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}

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}

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do_action('revslider_do_cache_additions', $additions, $output);

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}

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public function set_full_transient($transient, $sid, $content){

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$add = array(

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'html' => $content,

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'addition' => $this->get_additions()

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);

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$add = json_encode($add);

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set_transient($transient, $add, 60*60*24*7);

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$this->cache_additions = array();

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}

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/**

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* prints the additions html when the filter/action is called

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* @since: 6.4.7

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**/

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public function print_addition(){

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$html = $this->get_val($this->output_html, current_filter());

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if(is_array($html)){

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if(!empty($html)){

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usort($html, array($this, 'sort_by_priority'));

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echo (current_filter() === 'wp_print_footer_scripts') ? '<script>'."\n" : '';

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foreach($html as $echo){

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echo $this->get_val($echo, 'html');

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}

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echo (current_filter() === 'wp_print_footer_scripts') ? RS_T.'</script>'."\n" : '';

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}

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}else{

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echo $html;

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}

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}

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/**

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* check delete post based caches only!

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**/

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public function check_for_post_transient_deletion(){

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$post_types = array('post', 'posts', 'specific_posts', 'specific_post', 'current_post', 'woocommerce', 'woo');

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foreach($post_types as $k => $pt){

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$post_types[$k] = '"sourcetype":"'.$pt.'"';

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}

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$_slider = RevSliderGlobals::instance()->get('RevSliderSlider');

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$slider = $_slider->get_slider_by_param_string($post_types, true);

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//clear cache for all of these sliders

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if(!empty($slider) && is_array($slider)){

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foreach($slider as $s){

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$this->clear_transients_by_slider($this->get_val($s, 'id'));

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}

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}

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}

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public function sort_by_priority($a, $b) {

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return $a['priority'] - $b['priority'];

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}

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}

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