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Current File : //home/thanudqk/thepball.com/wp-content/plugins/ml-slider/ml-slider.php

<?php
// @codingStandardsIgnoreLine
/*
 * MetaSlider. Slideshow plugin for WordPress.
 *
 * Plugin Name: MetaSlider
 * Plugin URI:  https://www.metaslider.com
 * Description: Easy to use slideshow plugin. Create SEO optimised responsive slideshows with Nivo Slider, Flex Slider, Coin Slider and Responsive Slides.
 * Version:     3.20.3
 * Author:      MetaSlider
 * Author URI:  https://www.metaslider.com
 * License:     GPL-2.0+
 * Copyright:   2020- MetaSlider LLC
 *
 * Text Domain: ml-slider
 * Domain Path: /languages
 */

if (!defined('ABSPATH')) {
    die('No direct access.');
}

if (!class_exists('MetaSliderPlugin')) :

/**
 * Register the plugin.
 *
 * Display the administration panel, insert JavaScript etc.
 */
class MetaSliderPlugin
{

    /**
     * MetaSlider version number
     *
     * @var string
     */
    public $version = '3.20.3';

    /**
     * Pro installed version number
     *
     * @var string
     */
    public $installed_pro_version = '';

    /**
     * Specific SLider
     *
     * @var MetaSlider
     */
    public $slider = null;

    /**
     * Instance object
     *
     * @var object
     * @see get_instance()
     */
    protected static $instance = null;

    /**
     * Constructor
     */
    public function __construct()
    {
    }

    /**
     * Used to access the instance
     *
     * @return object - class instance
     */
    public static function get_instance()
    {
        if (null === self::$instance) {
            self::$instance = new self();
        }
        return self::$instance;
    }

    /**
     * Setup
     */
    public function setup()
    {
        define('METASLIDER_PATH', plugin_dir_path(__FILE__));

        require_once(METASLIDER_PATH . 'admin/lib/helpers.php');
        $this->define_constants();
        spl_autoload_register(array($this, 'autoload'));
        $this->setup_actions();
        $this->setup_filters();
        $this->setup_shortcode();
        $this->check_dependencies();

        // Load in slideshow admin relates classes.
        $this->register_slide_types();
        if (is_admin()) {
            $this->admin = new MetaSlider_Admin_Pages($this);
        }

        // Load in slideshow related classes
        require_once(METASLIDER_PATH . 'admin/slideshows/bootstrap.php');
        $this->themes = MetaSlider_Themes::get_instance();

        // Default to WP (4.4) REST API but backup with admin ajax
        require_once(METASLIDER_PATH . 'admin/routes/api.php');
        $this->api = MetaSlider_Api::get_instance();
        $this->api->setup();
        $this->api->register_admin_ajax_hooks();
        if (class_exists('WP_REST_Controller')) {
            new MetaSlider_REST_Controller();
        }

        if (function_exists('register_block_type')) {
            $this->gutenberg = new MetaSlider_Gutenberg($this);
        }

        $capability = apply_filters('metaslider_capability', 'edit_others_posts');
        if (is_admin() && current_user_can($capability)) {
            $analytics = new MetaSlider_Analytics();
            $analytics->load();
        }

        // require_once(METASLIDER_PATH . 'admin/lib/temporary.php');
        require_once(METASLIDER_PATH . 'admin/lib/callout.php');
    }

    /**
     * Define MetaSlider constants
     */
    private function define_constants()
    {
        if (!defined('METASLIDER_VERSION')) {
            define('METASLIDER_VERSION', $this->version);
            define('METASLIDER_BASE_URL', plugin_dir_url(metaslider_plugin_is_installed('ml-slider')));
            define('METASLIDER_ASSETS_URL', METASLIDER_BASE_URL . 'assets/');
            define('METASLIDER_ADMIN_URL', METASLIDER_BASE_URL . 'admin/');
            define('METASLIDER_ADMIN_ASSETS_URL', METASLIDER_ADMIN_URL . 'assets/');

            define('METASLIDER_THEMES_PATH', METASLIDER_PATH . 'themes/');
            define('METASLIDER_THEMES_URL', METASLIDER_BASE_URL . 'themes/');
        }
    }

    /**
     * All MetaSlider classes
     */
    private function plugin_classes()
    {
        return array(
            'metaslider'             => METASLIDER_PATH . 'inc/slider/metaslider.class.php',
            'metacoinslider'         => METASLIDER_PATH . 'inc/slider/metaslider.coin.class.php',
            'metaflexslider'         => METASLIDER_PATH . 'inc/slider/metaslider.flex.class.php',
            'metanivoslider'         => METASLIDER_PATH . 'inc/slider/metaslider.nivo.class.php',
            'metaresponsiveslider'   => METASLIDER_PATH . 'inc/slider/metaslider.responsive.class.php',
            'metaslide'              => METASLIDER_PATH . 'inc/slide/metaslide.class.php',
            'metaimageslide'         => METASLIDER_PATH . 'inc/slide/metaslide.image.class.php',
            'metasliderimagehelper'  => METASLIDER_PATH . 'inc/metaslider.imagehelper.class.php',
            'metaslidersystemcheck'  => METASLIDER_PATH . 'inc/metaslider.systemcheck.class.php',
            'metaslider_widget'      => METASLIDER_PATH . 'inc/metaslider.widget.class.php',
            'simple_html_dom'        => METASLIDER_PATH . 'inc/simple_html_dom.php',
            'metaslider_notices'     => METASLIDER_PATH . 'admin/Notices.php',
            'metaslider_admin_pages' => METASLIDER_PATH . 'admin/Pages.php',
            'metaslider_slideshows'  => METASLIDER_PATH . 'admin/Slideshows/Slideshows.php',
            'metaslider_settings'    => METASLIDER_PATH . 'admin/Slideshows/Settings.php',
            'metaslider_slide'  	 => METASLIDER_PATH . 'admin/Slideshows/slides/Slide.php',
            'metaslider_themes'  	 => METASLIDER_PATH . 'admin/Slideshows/Themes.php',
            'metaslider_image'  	 => METASLIDER_PATH . 'admin/Slideshows/Image.php',
            'metaslider_gutenberg'   => METASLIDER_PATH . 'admin/Gutenberg.php',
            'metaslider_analytics'   => METASLIDER_PATH . 'admin/support/Analytics.php'
        );
    }

    /**
     * Display a warning on the plugins page if a dependancy
     * is missing or a conflict might exist.
     *
     * @return void
     */
    public function check_dependencies()
    {
        // MetaSlider pro is active but pre 2.13.0 (2.13.0 includes its own notice system)
        $slug = metaslider_plugin_is_installed('ml-slider-pro');
        if (is_plugin_active($slug)) {
            $pro_data = get_file_data(trailingslashit(WP_PLUGIN_DIR) . $slug, array('Version' => 'Version'));
            $this->installed_pro_version = $pro_data['Version'];
            if ($this->installed_pro_version && version_compare($this->installed_pro_version, '2.13.0', '<')) {
                add_action('admin_notices', array($this, 'show_pro_is_outdated'), 10, 3);
            }
        }
    }

    /**
     * The warning message that is displayed
     *
     * @return void
     */
    public function show_pro_is_outdated()
    {
        global $pagenow;
        $page = isset($_GET['page']) ? $_GET['page'] : '';
        if ('update-core.php' !== $pagenow && 'plugins.php' !== $pagenow && 'metaslider' !== $page) {
            return;
        } ?>
		<div class='notice notice-error metaslider-pro-outdated-notice'>
			<p><?php printf(__('MetaSlider Pro is installed but is out of date. You may update it <a target="_blank" href="%s">here</a>. Learn more about this notice <a href="%s">here</a>', 'ml-slider'), self_admin_url('plugins.php'), 'https://www.metaslider.com/pro-is-installed-but-out-of-date')?></p>
		</div>
		<?php
    }

    /**
     * Autoload MetaSlider classes to reduce memory consumption
     *
     * @param  string $class Class name
     */
    public function autoload($class)
    {
        $classes = $this->plugin_classes();

        $class_name = strtolower($class);

        if (isset($classes[$class_name]) && is_readable($classes[$class_name])) {
            require_once($classes[$class_name]);
        }
    }


    /**
     * Register the [metaslider] shortcode.
     */
    private function setup_shortcode()
    {
        add_shortcode('metaslider', array( $this, 'register_shortcode' ));
        add_shortcode('ml-slider', array( $this, 'register_shortcode' )); // backwards compatibility
    }


    /**
     * Hook MetaSlider into WordPress
     */
    private function setup_actions()
    {
        add_action('admin_menu', array($this, 'register_admin_pages'), 9553);
        add_action('init', array($this, 'register_post_types'));
        add_action('init', array($this, 'register_taxonomy'));
        add_action('init', array($this, 'load_plugin_textdomain'));
        add_action('admin_footer', array($this, 'admin_footer'), 11);
        add_action('widgets_init', array($this, 'register_metaslider_widget'));

        add_action('admin_post_metaslider_switch_view', array($this, 'switch_view'));
        add_action('admin_post_metaslider_delete_slide', array($this, 'delete_slide'));
        add_action('admin_post_metaslider_delete_slider', array($this, 'delete_slider'));
        add_action('admin_post_metaslider_create_slider', array($this, 'create_slider'));

        add_action('media_upload_vimeo', array($this, 'upgrade_to_pro_tab_vimeo'));
        add_action('media_upload_youtube', array($this, 'upgrade_to_pro_tab_youtube'));
        add_action('media_upload_post_feed', array($this, 'upgrade_to_pro_tab_post_feed'));
        add_action('media_upload_layer', array($this, 'upgrade_to_pro_tab_layer'));

        // TODO: Refactor to Slide class object
        add_action('wp_ajax_delete_slide', array($this, 'ajax_delete_slide'));
        add_action('wp_ajax_undelete_slide', array($this, 'ajax_undelete_slide'));

        // TODO: Make this work
        // register_activation_hook(plugin_basename(__FILE__), array($this, 'after_activation'));
    }


    /**
     * Hook MetaSlider into WordPress
     */
    private function setup_filters()
    {
        add_filter('media_upload_tabs', array($this, 'custom_media_upload_tab_name'), 998);
        add_filter('media_view_strings', array($this, 'custom_media_uploader_tabs'), 5);
        add_filter('media_buttons', array($this, 'insert_metaslider_button'));
        add_filter("plugin_row_meta", array($this, 'get_extra_meta_links'), 10, 4);
        add_action('admin_head', array($this, 'add_star_styles'));

        // html5 compatibility for stylesheets enqueued within <body>
        add_filter('style_loader_tag', array($this, 'add_property_attribute_to_stylesheet_links'), 11, 2);
    }


    /**
     * Register MetaSlider widget
     */
    public function register_metaslider_widget()
    {
        register_widget('MetaSlider_Widget');
    }


    /**
     * Register ML Slider post type
     */
    public function register_post_types()
    {
        $show_ui = false;

        $capability = apply_filters('metaslider_capability', 'edit_others_posts');

        if (is_admin() && current_user_can($capability) && (isset($_GET['show_ui']) || defined("METASLIDER_DEBUG") && METASLIDER_DEBUG)) {
            $show_ui = true;
        }

        register_post_type(
            'ml-slider',
            array(
                'query_var' => false,
                'rewrite' => false,
                'public' => false,
                'exclude_from_search' => true,
                'publicly_queryable' => false,
                'show_in_nav_menus' => false,
                'show_ui' => $show_ui,
                'labels' => array(
                    'name' => 'MetaSlider'
                )
            )
        );

        register_post_type(
            'ml-slide',
            array(
                'query_var' => false,
                'rewrite' => false,
                'public' => false,
                'exclude_from_search' => true,
                'publicly_queryable' => false,
                'show_in_nav_menus' => false,
                'show_ui' => $show_ui,
                'supports' => array( 'title', 'editor', 'author', 'thumbnail', 'excerpt'),
                'labels' => array(
                    'name' => 'Meta Slides'
                )
            )
        );
    }


    /**
     * Register taxonomy to store slider => slides relationship
     */
    public function register_taxonomy()
    {
        $show_ui = false;

        $capability = apply_filters('metaslider_capability', 'edit_others_posts');

        if (is_admin() && current_user_can($capability) && (isset($_GET['show_ui']) || defined("METASLIDER_DEBUG") && METASLIDER_DEBUG)) {
            $show_ui = true;
        }

        register_taxonomy(
            'ml-slider',
            array('attachment', 'ml-slide'),
            array(
                'hierarchical' => true,
                'public' => false,
                'query_var' => false,
                'rewrite' => false,
                'show_ui' => $show_ui,
                'label' => "Slider"
            )
        );
    }


    /**
     * Register our slide types
     */
    private function register_slide_types()
    {
        $image = new MetaImageSlide();
    }

    /**
     * Add the menu pages
     */
    public function register_admin_pages()
    {
        $title = metaslider_pro_is_active() ? 'MetaSlider Pro' : 'MetaSlider';

        $this->admin->add_page($title, 'metaslider');
        $this->admin->add_page(__('Settings & Help', 'default'), 'metaslider-settings', 'metaslider');

        if (metaslider_user_sees_upgrade_page()) {
            $this->admin->add_page(__('Add-ons', 'ml-slider'), 'upgrade-metaslider', 'metaslider');
        }
    }

    /**
     * Shortcode used to display slideshow
     *
     * @param  string $atts attributes for short code
     * @return string HTML output of the shortcode
     */
    public function register_shortcode($atts)
    {
        extract(shortcode_atts(array(
            'id' => false,
            'title' => false,
            'restrict_to' => false,
            'theme' => null
        ), $atts, 'metaslider'));

        // If no id and no title, exit here
        if (!$id && !$title) {
            return false;
        }

        // If there is a title, get the id from the title
        if ($title) {
            global $wpdb;

            // Run a custom query because get_page_by_title() includes "trash" posts
            // Also, be sure just to get 1 post, in case they have multiple
            $sql = $wpdb->prepare("
				SELECT ID
				FROM $wpdb->posts
				WHERE post_title = %s
				AND post_type = 'ml-slider'
				AND post_status = 'publish'
				LIMIT 1
			", $title);
            $id = $wpdb->get_var($sql);

            // If no posts were returned, $id will be NULL
            if (is_null($id) || !(bool) $title) {
                return false;
            }
        }

        // handle [metaslider id=123 restrict_to=home]
        if ($restrict_to && ('home' === $restrict_to) && !is_front_page()) {
            return false;
        }
        if ($restrict_to && ('home' !== $restrict_to) && !is_page($restrict_to)) {
            return false;
        }

        // Attempt to get the ml-slider post object
        $slider = get_post($id);

        // check the slideshow is published and the ID is correct
        if (!$slider || 'publish' !== $slider->post_status || 'ml-slider' !== $slider->post_type) {
            return "<!-- MetaSlider {$atts['id']} not found -->";
        }

        // Set up the slideshow and load the slideshow theme
        $this->set_slider($id, $atts);
        MetaSlider_Themes::get_instance()->load_theme($id, $theme);
        $this->slider->enqueue_scripts();
        return $this->slider->render_public_slides();
    }

    /**
     * Set first activation option to database
     */
    public function after_activation()
    {

        // Set date showing the first activation and redirect
        if (!get_option('ms_was_installed_on')) {
            update_option('ms_was_installed_on', time());
        }
    }

    /**
     * Initialise translations
     */
    public function load_plugin_textdomain()
    {
        load_plugin_textdomain('ml-slider', false, dirname(plugin_basename(__FILE__)) . '/languages/');
    }

    /**
     * Check our WordPress installation is compatible with MetaSlider
     *
     * @param int $slideshow_id The current slideshow ID
     */
    public function do_system_check($slideshow_id)
    {
        $systemCheck = new MetaSliderSystemCheck($slideshow_id);
        $systemCheck->check();
    }


    /**
     * Update the tab options in the media manager
     *
     * @param  array $strings Array of settings for custom media tabs
     * @return array
     */
    public function custom_media_uploader_tabs($strings)
    {

        // update strings
        if ((isset($_GET['page']) && $_GET['page'] == 'metaslider')) {
            $strings['insertMediaTitle'] = __("Image", "ml-slider");
            $strings['insertIntoPost'] = __("Add to slideshow", "ml-slider");

            // remove options
            $strings_to_remove = array(
                'createVideoPlaylistTitle',
                'createGalleryTitle',
                'insertFromUrlTitle',
                'createPlaylistTitle'
            );

            foreach ($strings_to_remove as $string) {
                if (isset($strings[$string])) {
                    unset($strings[$string]);
                }
            }
        }

        return $strings;
    }


    /**
     * Add extra tabs to the default wordpress Media Manager iframe
     *
     * @param  array $tabs existing media manager tabs]
     * @return array
     */
    public function custom_media_upload_tab_name($tabs)
    {
        $metaslider_tabs = array( 'post_feed', 'layer', 'youtube', 'vimeo' );

        // restrict our tab changes to the MetaSlider plugin page
        if ((isset($_GET['page']) && $_GET['page'] == 'metaslider') || (isset($_GET['tab']) && in_array($_GET['tab'], $metaslider_tabs))) {
            $newtabs = array();

            if (function_exists('is_plugin_active') && ! is_plugin_active('ml-slider-pro/ml-slider-pro.php')) {
                $newtabs = array(
                    'post_feed' => __("Post Feed", "metaslider"),
                    'vimeo' => __("Vimeo", "metaslider"),
                    'youtube' => __("YouTube", "metaslider"),
                    'layer' => __("Layer Slide", "metaslider")
                );
            }

            if (isset($tabs['nextgen'])) {
                unset($tabs['nextgen']);
            }


            if (is_array($tabs)) {
                return array_merge($tabs, $newtabs);
            } else {
                return $newtabs;
            }
        }

        return $tabs;
    }

    /**
     * Set the current slider
     *
     * @param int   $id                 ID for slider
     * @param array $shortcode_settings Settings for slider
     */
    public function set_slider($id, $shortcode_settings = array())
    {
        $type = 'flex';

        if (isset($shortcode_settings['type'])) {
            $type = $shortcode_settings['type'];
        } elseif ($settings = get_post_meta($id, 'ml-slider_settings', true)) {
            if (is_array($settings) && isset($settings['type'])) {
                $type = $settings['type'];
            }
        }

        if (! in_array($type, array( 'flex', 'coin', 'nivo', 'responsive' ))) {
            $type = 'flex';
        }

        $this->slider = $this->load_slider($type, $id, $shortcode_settings);
    }


    /**
     * Create a new slider based on the sliders type setting
     *
     * @param  string $type               Type of slide
     * @param  int    $id                 ID of slide
     * @param  string $shortcode_settings Shortcode settings
     * @return array
     */
    private function load_slider($type, $id, $shortcode_settings)
    {
        switch ($type) {
            case('coin'):
                return new MetaCoinSlider($id, $shortcode_settings);
            case('flex'):
                return new MetaFlexSlider($id, $shortcode_settings);
            case('nivo'):
                return new MetaNivoSlider($id, $shortcode_settings);
            case('responsive'):
                return new MetaResponsiveSlider($id, $shortcode_settings);
            default:
                return new MetaFlexSlider($id, $shortcode_settings);

        }
    }

    /**
     * Update the slider
     *
     * @deprecated 3.13.0 use the API
     *
     * @return string a JSON string with success or failure (and errors)
     */
    public function update_slider()
    {
        return $this->api->save_slideshow(stripslashes_deep($_REQUEST));
    }

    /**
     * Delete a slide via ajax.
     *
     * @return string Returns the status of the request
     */
    public function ajax_undelete_slide()
    {
        if (!wp_verify_nonce($_REQUEST['_wpnonce'], 'metaslider_undelete_slide')) {
            return wp_send_json_error(array(
                    'message' => __('The security check failed. Please refresh the page and try again.', 'ml-slider')
            ), 401);
        }

        $result = $this->undelete_slide(absint($_POST['slide_id']), absint($_POST['slider_id']));

        if (is_wp_error($result)) {
            return wp_send_json_error(array(
                    'message' => $result->get_error_message()
            ), 409);
        }

        return wp_send_json_success(array(
            'message' => __('The slide was successfully restored', 'ml-slider'),
        ), 200);
    }

    /**
     * Undeletes a slide.
     *
     * @param int $slide_id  	The ID of the slide
     * @param int $slideshow_id The ID of the slideshow
     * @return mixed
     */
    public function undelete_slide($slide_id, $slideshow_id)
    {
        if ('ml-slide' === get_post_type($slide_id)) {

            // Touch the slideshow post type to update the modified date
            wp_update_post(array('ID' => $slideshow_id));

            return wp_update_post(array(
                'ID' => $slide_id,
                'post_status' => 'publish'
            ), new WP_Error('update_failed', __('The attempt to restore the slide failed.', 'ml-slider'), array('status' => 409)));
        }

        /*
        * Legacy: This removes the relationship between the slider and slide
        * This restores the relationship between a slide and slider.
        * If using a newer version, this relationship is never lost on delete.
        * NB: this covers when a 'ml-slide' was an attachment with meta
        */

        // Get the slider's term and apply it to the slide.
        $term = get_term_by('name', $slideshow_id, 'ml-slider');
        return wp_set_object_terms($slide_id, $term->term_id, 'ml-slider');
    }

    /**
     * Delete a slide via ajax.
     */
    public function ajax_delete_slide()
    {
        if (!wp_verify_nonce($_REQUEST['_wpnonce'], 'metaslider_delete_slide')) {
            return wp_send_json_error(array(
                    'message' => __('The security check failed. Please refresh the page and try again.', 'ml-slider')
            ), 401);
        }

        $result = $this->delete_slide(absint($_POST['slide_id']), absint($_POST['slider_id']));

        if (is_wp_error($result)) {
            return wp_send_json_error(array(
                    'message' => $result->get_error_message()
            ), 409);
        }

        return wp_send_json_success(array(
            'message' => __('The slide was successfully trashed', 'ml-slider'),
        ), 200);
    }

    /**
     * Delete a slide by either trashing it or for
     * legacy reasons removing the taxonomy relationship.
     *
     * @param int $slide_id  	The ID of the slide
     * @param int $slideshow_id The ID of the slideshow
     * @return mixed Will return the terms or WP_Error
     */
    public function delete_slide($slide_id, $slideshow_id)
    {
        if ('ml-slide' === get_post_type($slide_id)) {

            // Touch the slideshow post type to update the modified date
            wp_update_post(array('ID' => $slideshow_id));

            return wp_update_post(array(
                'ID' => $slide_id,
                'post_status' => 'trash'
            ), new WP_Error('update_failed', 'The attempt to delete the slide failed.', array('status' => 409)));
        }

        /*
        * Legacy: This removes the relationship between the slider and slide
        * A slider with ID 216 might have a term_id of 7
        * A slide with ID 217 could have a term_taxonomy_id of 7
        * Multiple slides would have this term_taxonomy_id of 7
        * NB: this covers when a 'ml-slide' was an attachment with meta
        */

        // This returns the term_taxonomy_id (7 from example)
        $current_terms = wp_get_object_terms($slide_id, 'ml-slider', array('fields' => 'ids'));

        // This returns the term object, named after the slider ID
        // The $term->term_id would be 7 in the example above
        // It also includes the count of slides attached to the slider
        $term = get_term_by('name', $slideshow_id, 'ml-slider');

        // I'm not sure why this is here. It seems this is only useful if
        // a slide was attached to multiple sliders. A slide should only
        // have one $current_terms (7 above)
        $new_terms = array();
        foreach ($current_terms as $current_term) {
            if ($current_term != $term->term_id) {
                $new_terms[] = absint($current_term);
            }
        }

        // This only works becasue $new_terms is an empty array,
        // which deletes the relationship. I'm leaving the loop above
        // in case it's here for some legacy reason I'm unaware of.
        return wp_set_object_terms($slide_id, $new_terms, 'ml-slider');
    }


    /**
     * Delete a slider (send it to trash)
     *
     * @deprecated 3.11.0 use the API
     *
     * @return string - the json response from the API
     */
    public function delete_slider()
    {
        return $this->api->delete_slideshow($_REQUEST);
    }

    /**
     * Switch view
     *
     * @return null
     */
    public function switch_view()
    {
        global $user_ID;

        $view = $_GET['view'];

        $allowed_views = array('tabs', 'dropdown');

        if (! in_array($view, $allowed_views)) {
            return;
        }

        delete_user_meta($user_ID, "metaslider_view");

        if ($view == 'dropdown') {
            add_user_meta($user_ID, "metaslider_view", "dropdown");
        }

        wp_redirect(admin_url("admin.php?page=metaslider"));
    }

    /**
     * Create a new slider
     */
    public function create_slider()
    {
        check_admin_referer('metaslider_create_slider');
        $capability = apply_filters('metaslider_capability', 'edit_others_posts');
        if (!current_user_can($capability)) {
            return;
        }

        $id = MetaSlider_Slideshows::create();

        wp_redirect(admin_url("admin.php?page=metaslider&id={$id}"));
    }



    /**
     * Find a single slider ID. For example, last edited, or first published.
     *
     * @param string $orderby field to order.
     * @param string $order   direction (ASC or DESC).
     * @return int slider ID.
     */
    private function find_slider($orderby, $order)
    {
        $args = array(
            'force_no_custom_order' => true,
            'post_type' => 'ml-slider',
            'num_posts' => 1,
            'post_status' => 'publish',
            'suppress_filters' => 1, // wpml, ignore language filter
            'orderby' => $orderby,
            'order' => $order
        );

        $the_query = new WP_Query($args);

        while ($the_query->have_posts()) {
            $the_query->the_post();
            return $the_query->post->ID;
        }

        wp_reset_query();

        return false;
    }


    /**
     * Get sliders. Returns a nicely formatted array of currently
     * published sliders.
     *
     * @param string $sort_key Specified sort key
     * @return array all published sliders
     */
    public function all_meta_sliders($sort_key = 'date')
    {
        $sliders = array();

        // list the tabs
        $args = array(
            'post_type' => 'ml-slider',
            'post_status' => 'publish',
            'orderby' => $sort_key,
            'suppress_filters' => 1, // wpml, ignore language filter
            'order' => 'ASC',
            'posts_per_page' => -1
        );

        $args = apply_filters('metaslider_all_meta_sliders_args', $args);

        // WP_Query causes issues with other plugins using admin_footer to insert scripts
        // use get_posts instead
        $all_sliders = get_posts($args);

        foreach ($all_sliders as $slideshow) {
            $active = $this->slider && ($this->slider->id == $slideshow->ID) ? true : false;

            $sliders[] = array(
                'active' => $active,
                'title' => $slideshow->post_title,
                'id' => $slideshow->ID
            );
        }

        return $sliders;
    }


    /**
     * Compare array values
     *
     * @param array $elem1 The first element to comapre
     * @param array $elem2 The second element to comapr
     * @return int
     */
    private function compare_elems($elem1, $elem2)
    {
        if ($elem1['priority'] == $elem2['priority']) {
            return 0;
        }
        return $elem1['priority'] > $elem2['priority'] ? 1 : -1;
    }


    /**
     * Building setting rows
     *
     * @param  array $settings array of fields to render
     * @return string
     */
    public function build_settings_rows($settings)
    {

        // order the fields by priority
        uasort($settings, array($this, "compare_elems"));
        $output = "";

        // loop through the array and build the settings HTML
        foreach ($settings as $id => $row) {
            $helptext = isset($row['helptext']) ? htmlentities2($row['helptext']) : '';

            switch ($row['type']) {

                // checkbox input type
                case 'checkbox':
                    $output .= "<tr><td class='tipsy-tooltip' title='{$helptext}'>{$row['label']}</td><td><input class='option {$row['class']} {$id}' type='checkbox' name='settings[{$id}]' {$row['checked']} />";
                    if (isset($row['after'])) {
                        $output .= "<span class='text-base ml-1 rtl:ml-0 rtl:mr-1'>{$row['after']}</span>";
                    }
                    $output .= "</td></tr>";
                    break;

                // navigation row
                case 'navigation':
                    $navigation_row = "<tr class='{$row['type']}'><td class='tipsy-tooltip' title='{$helptext}'>{$row['label']}</td><td><ul>";
                    foreach ($row['options'] as $option_name => $option_value) {
                        $tease = isset($option_value['addon_required']) ? 'disabled' : '';
                        if (true === $row['value'] && 'true' === $option_name) {
                            $checked = checked(true, true, false);
                        } elseif (false === $row['value'] && 'false' === $option_name) {
                            $checked = checked(true, true, false);
                        } else {
                            $checked = checked($option_name, $row['value'], false);
                        }
                        $disabled = $option_name == 'thumbnails' ? 'disabled' : '';
                        $navigation_row .= "<li><label class='{$tease}'><input {$tease} type='radio' name='settings[{$id}]' value='{$option_name}' {$checked} {$disabled}/>{$option_value['label']}</label>";
                        if (isset($option_value['addon_required']) && $option_value['addon_required']) {
                            $navigation_row .= sprintf(" <a target='_blank' class='get-addon' href='%s' title='%s'>%s</a>", metaslider_get_upgrade_link(), __('Get the Add-on Pack today!', 'ml-slider'), __('Learn More', 'ml-slider'));
                        }
                        $navigation_row .= "</li>";
                    }
                    $navigation_row .= "</ul></td></tr>";
                    $output .= apply_filters('metaslider_navigation_options', $navigation_row, $this->slider);
                    break;

                // navigation row
                case 'radio':
                    $navigation_row = "<tr class='{$row['type']}'><td class='tipsy-tooltip' title='{$helptext}'>{$row['label']}</td><td><ul>";
                    foreach ($row['options'] as $option_name => $option_value) {
                        $checked = checked($option_name, $row['value'], false);
                        $class = isset($option_value['class']) ? $option_value['class'] : "";
                        $navigation_row .= "<li><label><input type='radio' name='settings[{$id}]' value='{$option_name}' {$checked} class='radio {$class}'/>{$option_value['label']}</label></li>";
                    }
                    $navigation_row .= "</ul></td></tr>";
                    $output .= apply_filters('metaslider_navigation_options', $navigation_row, $this->slider);
                    break;

                // header/divider row
                case 'divider':
                    $output .= "<tr class='{$row['type']}'><td colspan='2' class='divider'><b>{$row['value']}</b></td></tr>";
                    break;

                // slideshow select row
                case 'slider-lib':
                    $output .= "<tr class='{$row['type']}'><td colspan='2' class='slider-lib-row'>";
                    foreach ($row['options'] as $option_name => $option_value) {
                        $checked = checked($option_name, $row['value'], false);
                        $output .= "<input class='select-slider' id='{$option_name}' rel='{$option_name}' type='radio' name='settings[type]' value='{$option_name}' {$checked} />
                        <label tabindex='0' for='{$option_name}'>{$option_value['label']}</label>";
                    }
                    $output .= "</td></tr>";
                    break;

                // number input type
                case 'number':
                    $output .= "<tr class='{$row['type']}'><td class='tipsy-tooltip' title='{$helptext}'>{$row['label']}</td><td class='flex items-center justify-start'><input class='option {$row['class']} {$id} w-24' type='number' min='{$row['min']}' max='{$row['max']}' step='{$row['step']}' name='settings[{$id}]' value='" . absint($row['value']) . "' /><span class='text-base ml-1 rtl:ml-0 rtl:mr-1'>{$row['after']}</span></td></tr>";
                    break;

                // select drop down
                case 'select':
                    $output .= "<tr class='{$row['type']}'><td class='tipsy-tooltip' title='{$helptext}'>{$row['label']}</td><td><select class='option {$row['class']} {$id}' name='settings[{$id}]'>";
                    foreach ($row['options'] as $option_name => $option_value) {
                        $selected = selected($option_name, $row['value'], false);
                        $output .= "<option class='{$option_value['class']}' value='{$option_name}' {$selected}>{$option_value['label']}</option>";
                    }
                    $output .= "</select></td></tr>";
                    break;

                // theme drop down
                case 'theme':
                    $output .= "<tr class='{$row['type']}'><td class='tipsy-tooltip' title='{$helptext}'>{$row['label']}</td><td><select class='option {$row['class']} {$id}' name='settings[{$id}]'>";
                    $themes = "";
                    foreach ($row['options'] as $option_name => $option_value) {
                        $selected = selected($option_name, $row['value'], false);
                        $themes .= "<option class='{$option_value['class']}' value='{$option_name}' {$selected}>{$option_value['label']}</option>";
                    }
                    $output .= apply_filters('metaslider_get_available_themes', $themes, $this->slider->get_setting('theme'));
                    $output .= "</select></td></tr>";
                    break;

                // text input type
                case 'text':
                    $output .= "<tr class='{$row['type']}'><td class='tipsy-tooltip' title='{$helptext}'>{$row['label']}</td><td class='flex items-center justify-start'><input class='option {$row['class']} {$id}' type='text' autocomplete='off' data-lpignore='true' name='settings[{$id}]' value='" . esc_attr($row['value']) . "' /></td></tr>";
                    break;

                // text input type
                case 'textarea':
                    $output .= "<tr class='{$row['type']}'><td class='tipsy-tooltip' title='{$helptext}' colspan='2'>{$row['label']}</td></tr><tr><td colspan='2'><textarea class='option {$row['class']} {$id}' name='settings[{$id}]' />{$row['value']}</textarea></td></tr>";
                    break;

                // text input type
                case 'title':
                    $output .= "<tr class='{$row['type']}'><td class='tipsy-tooltip' title='{$helptext}'>{$row['label']}</td><td><input class='option {$row['class']} {$id}' type='text' autocomplete='off' data-lpignore='true' name='{$id}' value='" . esc_attr($row['value']) . "' /></td></tr>";
                    break;
            }
        }
        return $output;
    }


    /**
     * Return an indexed array of all easing options
     *
     * @return array
     */
    private function get_easing_options()
    {
        $options = array(
            'linear', 'swing', 'jswing', 'easeInQuad', 'easeOutQuad', 'easeInOutQuad',
            'easeInCubic', 'easeOutCubic', 'easeInOutCubic', 'easeInQuart',
            'easeOutQuart', 'easeInOutQuart', 'easeInQuint', 'easeOutQuint',
            'easeInOutQuint', 'easeInSine', 'easeOutSine', 'easeInOutSine',
            'easeInExpo', 'easeOutExpo', 'easeInOutExpo', 'easeInCirc', 'easeOutCirc',
            'easeInOutCirc', 'easeInElastic', 'easeOutElastic', 'easeInOutElastic',
            'easeInBack', 'easeOutBack', 'easeInOutBack', 'easeInBounce', 'easeOutBounce',
            'easeInOutBounce'
        );
        $output = array();

        foreach ($options as $option) {
            $output[$option] = array(
                'label' => ucfirst(preg_replace('/(\w+)([A-Z])/U', '\\1 \\2', $option)),
                'class' => ''
            );
        }

        return $output;
    }

    /**
     * Return the users saved view preference.
     */
    public function get_view()
    {
        global $user_ID;

        if (get_user_meta($user_ID, "metaslider_view", true)) {
            return get_user_meta($user_ID, "metaslider_view", true);
        }

        return 'tabs';
    }


    /**
     * Render the admin page (tabs, slides, settings)
     */
    public function render_admin_page()
    {

        // Default to the most recently modified slider
        $slider_id = $this->find_slider('modified', 'DESC');

        // If the id parameter exists, verify and use that.
        if (isset($_REQUEST['id']) && $id = $_REQUEST['id']) {
            if (in_array(get_post_status(absint($id)), array('publish', 'inherit'))) {
                $slider_id = (int)$id;
            }
        }

        // "Set the slider"
        // TODO figure out what this does and if it can be better stated
        // Perhaps maybe "apply_settings()" or something.
        if ($slider_id) {
            $this->set_slider($slider_id);
        }

        $slider_id = $this->slider ? $this->slider->id : 0;

        $this->do_system_check($slider_id);

        if (metaslider_user_is_ready_for_notices()) {
            echo $this->notices->do_notice(false, 'header', true);
        }

        // Get the current theme if set
        $theme = metaslider_themes::get_instance()->get_current_theme($slider_id);
        if (is_wp_error($theme)) {
            $theme = false;
        }
        if (is_array($theme)) {
            unset($theme['images']);
        }
        $theme_id = isset($theme['folder']) ? $theme['folder'] : false; ?>
        <div id="metaslider-ui" class="metaslider metaslider-ui block min-h-screen p-0 pb-24 bg-gray-lightest">
		<?php
            $slider_settings = get_post_meta($slider_id, 'ml-slider_settings', true);
        $tour_position = get_option('metaslider_tour_cancelled_on');

        if (!class_exists('MetaSlider_Analytics')) {
            require_once(METASLIDER_PATH . 'admin/support/Analytics.php');
        }
        $analytics = new MetaSlider_Analytics(); ?>

		<metaslider
			:id='<?php echo $slider_id; ?>'
			v-bind:settings='<?php echo esc_attr(json_encode($slider_settings)); ?>'
			tour-status="<?php echo $tour_position ? $tour_position : false ?>"
            show-opt-in="<?php echo !$analytics::siteIsOptin() && !get_user_option('metaslider_analytics_onboarding_status'); ?>"
			inline-template>
			<span>
			<form @submit.prevent="" @keydown.enter.prevent="" autocomplete="off" id="ms-form-settings" accept-charset="UTF-8" action="<?php echo admin_url('admin-post.php'); ?>" method="post" :class="{ 'respect-ie11': isIE11 }">

				<?php include METASLIDER_PATH."admin/views/pages/parts/toolbar.php"; ?>

				<div class="container px-6">
				<?php

                // If there is no slideshow, show the start page and close out
                if (!$this->slider) {
                    include METASLIDER_PATH."admin/views/pages/start.php";
                    echo '</form><metaslider-utility-modal></metaslider-utility-modal></span></metaslider>';
                    return;
                } ?>
				<div v-if="current && current.hasOwnProperty('id')" id='poststuff' class="metaslider-inner wp-clearfix">
					<div class="my-6">
						<?php if (metaslider_viewing_trashed_slides($this->slider->id)) {
                    // If they are on the trash page, show them?>
							<h3 class="flex float-left m-0 mr-2"><i><svg xmlns="http://www.w3.org/2000/svg" width="16" height="16" viewBox="0 0 24 24" fill="none" stroke="currentColor" stroke-width="2" stroke-linecap="round" stroke-linejoin="round" class="feather feather-trash-2"><polyline points="3 6 5 6 21 6"/><path d="M19 6v14a2 2 0 0 1-2 2H7a2 2 0 0 1-2-2V6m3 0V4a2 2 0 0 1 2-2h4a2 2 0 0 1 2 2v2"/><line x1="10" y1="11" x2="10" y2="17"/><line x1="14" y1="11" x2="14" y2="17"/></svg></i> <?php _e('Trashed Slides', 'ml-slider'); ?></h3>
							 <?php printf(__('<a href="%s">view active</a>', 'ml-slider'), admin_url("admin.php?page=metaslider&id={$this->slider->id}")); ?>
						<?php
                } else { ?>
							<metaslider-title></metaslider-title>
						<?php } ?>
					</div>

                    <div id='post-body' class='-mx-4 flex justify-between metabox-holder'>

						<metaslider-slide-viewer inline-template>
                        <div class="flex-grow mx-4 mb-4">
                            <div class="left">

                                <?php do_action("metaslider_admin_table_before", $this->slider->id); ?>

                                <table id="metaslider-slides-list" class="widefat sortable metaslider-slides-container table-fixed">
                                    <tbody>
                                        <?php
                                            $this->slider->render_admin_slides(); ?>
                                    </tbody>
                                </table>

                                <?php do_action("metaslider_admin_table_after", $this->slider->id); ?>

                            </div>
						</div>
						</metaslider-slide-viewer>

                        <div style="min-width:300px;width:300px" class="mx-4">
                            <div class='right'>
                            <?php if (metaslider_viewing_trashed_slides($this->slider->id)) {

                                // Show a notice explaining the trash?>
                                <div class="ms-postbox trashed-notice">
                                    <div class="notice-info"><?php printf(__('You are viewing slides that have been trashed, which will be automatically deleted in %s days. Click <a href="%s">here</a> to view active slides.', 'ml-slider'), EMPTY_TRASH_DAYS, admin_url("admin.php?page=metaslider&id={$this->slider->id}")); ?></div>

                                    <?php
                                        // TODO this is a temp fix to avoid a compatability check in pro
                                        echo "<input type='checkbox' style='display:none;' checked class='select-slider' rel='flex'></inpu>"; ?>
                                </div>
							<?php
                                            } else { ?>
								<metaslider-settings-viewer inline-template>
								<div>
                                <div class="ms-postbox" id="metaslider_configuration">
                                    <div class="inside wp-clearfix">
                                        <table class="ms-settings">
                                            <tbody>
                                                <?php
                                                    $aFields = array(
                                                        'type' => array(
                                                            'priority' => 0,
                                                            'type' => 'slider-lib',
                                                            'value' => $this->slider->get_setting('type'),
                                                            'options' => array(
                                                                'flex' => array('label' => "FlexSlider"),
                                                                'responsive' => array('label' => "R. Slides"),
                                                                'nivo' => array('label' => "Nivo Slider"),
                                                                'coin' => array('label' => "Coin Slider")
                                                            )
                                                        ),
                                                        'width' => array(
                                                            'priority' => 10,
                                                            'type' => 'number',
                                                            'size' => 3,
                                                            'min' => 0,
                                                            'max' => 9999,
                                                            'step' => 1,
                                                            'value' => $this->slider->get_setting('width'),
                                                            'label' => __("Width", "ml-slider"),
                                                            'class' => 'coin flex responsive nivo',
                                                            'helptext' => __("Slideshow width", "ml-slider"),
                                                            'after' => __("px", "ml-slider")
                                                        ),
                                                        'height' => array(
                                                            'priority' => 20,
                                                            'type' => 'number',
                                                            'size' => 3,
                                                            'min' => 0,
                                                            'max' => 9999,
                                                            'step' => 1,
                                                            'value' => $this->slider->get_setting('height'),
                                                            'label' => __("Height", "ml-slider"),
                                                            'class' => 'coin flex responsive nivo',
                                                            'helptext' => __("Slideshow height", "ml-slider"),
                                                            'after' => __("px", "ml-slider")
                                                        ),
                                                        'effect' => array(
                                                            'priority' => 30,
                                                            'type' => 'select',
                                                            'value' => $this->slider->get_setting('effect'),
                                                            'label' => __("Effect", "ml-slider"),
                                                            'class' => 'effect coin flex responsive nivo',
                                                            'helptext' => __("Slide transition effect", "ml-slider"),
                                                            'options' => array(
                                                                'random'             => array( 'class' => 'option coin nivo' , 'label' => __("Random", "ml-slider") ),
                                                                'swirl'              => array( 'class' => 'option coin', 'label' => __("Swirl", "ml-slider") ),
                                                                'rain'               => array( 'class' => 'option coin', 'label' => __("Rain", "ml-slider") ),
                                                                'straight'           => array( 'class' => 'option coin', 'label' => __("Straight", "ml-slider") ),
                                                                'sliceDown'          => array( 'class' => 'option nivo', 'label' => __("Slide Down", "ml-slider") ),
                                                                'sliceUp'            => array( 'class' => 'option nivo', 'label' => __("Slice Up", "ml-slider") ),
                                                                'sliceUpLeft'        => array( 'class' => 'option nivo', 'label' => __("Slide Up Left", "ml-slider") ),
                                                                'sliceUpDown'        => array( 'class' => 'option nivo', 'label' => __("Slice Up Down", "ml-slider") ),
                                                                'slideUpDownLeft'    => array( 'class' => 'option nivo', 'label' => __("Slide Up Down Left", "ml-slider") ),
                                                                'fold'               => array( 'class' => 'option nivo', 'label' => __("Fold", "ml-slider") ),
                                                                'fade'               => array( 'class' => 'option nivo flex responsive', 'label' => __("Fade", "ml-slider") ),
                                                                'slideInRight'       => array( 'class' => 'option nivo', 'label' => __("Slide In Right", "ml-slider") ),
                                                                'slideInLeft'        => array( 'class' => 'option nivo', 'label' => __("Slide In Left", "ml-slider") ),
                                                                'boxRandom'          => array( 'class' => 'option nivo', 'label' => __("Box Random", "ml-slider") ),
                                                                'boxRain'            => array( 'class' => 'option nivo', 'label' => __("Box Rain", "ml-slider") ),
                                                                'boxRainReverse'     => array( 'class' => 'option nivo', 'label' => __("Box Rain Reverse", "ml-slider") ),
                                                                'boxRainGrowReverse' => array( 'class' => 'option nivo', 'label' => __("Box Rain Grow Reverse", "ml-slider") ),
                                                                'slide'              => array( 'class' => 'option flex', 'label' => __("Slide", "ml-slider") )
                                                            ),
                                                        ),
                                                        'links' => array(
                                                            'priority' => 50,
                                                            'type' => 'checkbox',
                                                            'label' => __("Arrows", "ml-slider"),
                                                            'class' => 'option coin flex nivo responsive',
                                                            'checked' => $this->slider->get_setting('links') == 'true' ? 'checked' : '',
                                                            'helptext' => __("Show the previous/next arrows", "ml-slider")
                                                        ),
                                                        'navigation' => array(
                                                            'priority' => 60,
                                                            'type' => 'navigation',
                                                            'label' => __("Navigation", "ml-slider"),
                                                            'class' => 'option coin flex nivo responsive',
                                                            'value' => $this->slider->get_setting('navigation'),
                                                            'helptext' => __("Show the slide navigation bullets", "ml-slider"),
                                                            'options' => array(
                                                                'false' => array('label' => __("Hidden", "ml-slider")),
                                                                'true' => array('label' => __("Dots", "ml-slider")),
                                                                'thumbs' => array(
                                                                    'label' => __("Thumbnail", "ml-slider"),
                                                                    'addon_required' => true
                                                                ),
                                                                'filmstrip' => array(
                                                                    'label' => __("Filmstrip", "ml-slider"),
                                                                    'addon_required' => true
                                                                ),
                                                            )
                                                        ),
                                                    );

                                                    $aFields = apply_filters('metaslider_basic_settings', $aFields, $this->slider);

                                                    echo $this->build_settings_rows($aFields);
                                                ?>
                                            </tbody>
                                        </table>


                                        <?php
                                        // Show the restore button if there are trashed posts
                                        // Also, render but hide the link in case we want to show
                                        // it when the user deletes their first slide
                                        $count = count(metaslider_has_trashed_slides($this->slider->id));
                                        if (!metaslider_viewing_trashed_slides($this->slider->id)) { ?>
                                            <a <?php echo $count ? '' : "style='display:none;'" ?> class="restore-slide-link tipsy-tooltip-top flex text-blue-dark hover:text-orange -mb-2 mt-1 -mr-2 rtl:float-left rtl:-ml-1 rtl:mr-0" title="<?php _e('View trashed slides', 'ml-slider'); ?>" href="<?php echo admin_url("admin.php?page=metaslider&id={$this->slider->id}&show_trashed=true"); ?>">
                                                <i><svg xmlns="http://www.w3.org/2000/svg" width="14" height="14" viewBox="0 0 24 24" fill="none" stroke="currentColor" stroke-width="2" stroke-linecap="round" stroke-linejoin="round" class="feather feather-trash-2"><polyline points="3 6 5 6 21 6"/><path d="M19 6v14a2 2 0 0 1-2 2H7a2 2 0 0 1-2-2V6m3 0V4a2 2 0 0 1 2-2h4a2 2 0 0 1 2 2v2"/><line x1="10" y1="11" x2="10" y2="17"/><line x1="14" y1="11" x2="14" y2="17"/></svg></i>
                                            </a>
                                        <?php } ?>
                                    </div>
								</div>
								<metaslider-theme-viewer
									theme-directory-url="<?php echo METASLIDER_THEMES_URL; ?>"
								></metaslider-theme-viewer>

								<?php include METASLIDER_PATH . "admin/views/pages/parts/shortcode.php"; ?>

                                <div class="ms-postbox ms-toggle closed" id="metaslider_advanced_settings">
                                    <div class="handlediv" title="<?php esc_attr_e('Click to toggle', 'ml-slider'); ?>"></div><h3 class="hndle"><span><?php _e("Advanced Settings", "ml-slider") ?></span></h3>
                                    <div class="inside">
                                        <table class="ms-settings">
                                            <tbody>
                                                <?php
                                                    $aFields = array(
                                                        'fullWidth' => array(
                                                            'priority' => 5,
                                                            'type' => 'checkbox',
                                                            'label' => __("100% width", "ml-slider"),
                                                            'class' => 'option flex nivo responsive',
                                                            'checked' => $this->slider->get_setting('fullWidth') == 'true' ? 'checked' : '',
                                                            'helptext' => __("Stretch the slideshow output to fill it's parent container", "ml-slider")
                                                        ),
                                                        'center' => array(
                                                            'priority' => 10,
                                                            'type' => 'checkbox',
                                                            'label' => __("Center align", "ml-slider"),
                                                            'class' => 'option coin flex nivo responsive',
                                                            'checked' => $this->slider->get_setting('center') == 'true' ? 'checked' : '',
                                                            'helptext' => __("Center align the slideshow", "ml-slider")
                                                        ),
                                                        'autoPlay' => array(
                                                            'priority' => 20,
                                                            'type' => 'checkbox',
                                                            'label' => __("Auto play", "ml-slider"),
                                                            'class' => 'option flex nivo responsive coin',
                                                            'checked' => 'true' == $this->slider->get_setting('autoPlay') ? 'checked' : '',
                                                            'helptext' => __("Transition between slides automatically", "ml-slider")
                                                        ),
                                                        'smartCrop' => array(
                                                            'priority' => 30,
                                                            'type' => 'select',
                                                            'label' => __("Image Crop", "ml-slider"),
                                                            'class' => 'option coin flex nivo responsive',
                                                            'value' => $this->slider->get_setting('smartCrop'),
                                                            'options' => array(
                                                                'true' => array( 'label' => __("Smart Crop", "ml-slider"), 'class' => '' ),
                                                                'false' => array( 'label' => __("Standard", "ml-slider"), 'class' => '' ),
                                                                'disabled' => array( 'label' => __("Disabled", "ml-slider"), 'class' => '' ),
                                                                'disabled_pad' => array( 'label' => __("Disabled (Smart Pad)", "ml-slider"), 'class' => 'option flex' ),
                                                            ),
                                                            'helptext' => __("Smart Crop ensures your responsive slides are cropped to a ratio that results in a consistent slideshow size", "ml-slider")
                                                        ),
                                                        'carouselMode' => array(
                                                            'priority' => 40,
                                                            'type' => 'checkbox',
                                                            'label' => __("Carousel mode", "ml-slider"),
                                                            'class' => 'option flex showNextWhenChecked',
                                                            'checked' => $this->slider->get_setting('carouselMode') == 'true' ? 'checked' : '',
                                                            'helptext' => __("Display multiple slides at once. Slideshow output will be 100% wide.", "ml-slider")
                                                        ),
                                                        'carouselMargin' => array(
                                                            'priority' => 45,
                                                            'min' => 0,
                                                            'max' => 9999,
                                                            'step' => 1,
                                                            'type' => 'number',
                                                            'label' => __("Carousel margin", "ml-slider"),
                                                            'class' => 'option flex',
                                                            'value' => $this->slider->get_setting('carouselMargin'),
                                                            'helptext' => __("Pixel margin between slides in carousel.", "ml-slider"),
                                                            'after' => __("px", "ml-slider")
                                                        ),
                                                        'firstSlideFadeIn' => array(
                                                            'priority' => 47,
                                                            'type' => 'checkbox',
                                                            'label' => __("Fade in", "ml-slider"),
                                                            'class' => 'option flex',
                                                            'checked' => 'true' == $this->slider->get_setting('firstSlideFadeIn') ? 'checked' : '',
                                                            'helptext' => __("Fade in the first slide", "ml-slider"),
                                                        ),
                                                        'random' => array(
                                                            'priority' => 50,
                                                            'type' => 'checkbox',
                                                            'label' => __("Random", "ml-slider"),
                                                            'class' => 'option coin flex nivo responsive',
                                                            'checked' => $this->slider->get_setting('random') == 'true' ? 'checked' : '',
                                                            'helptext' => __("Randomise the order of the slides", "ml-slider")
                                                        ),
                                                        'hoverPause' => array(
                                                            'priority' => 60,
                                                            'type' => 'checkbox',
                                                            'label' => __("Hover pause", "ml-slider"),
                                                            'class' => 'option coin flex nivo responsive',
                                                            'checked' => $this->slider->get_setting('hoverPause') == 'true' ? 'checked' : '',
                                                            'helptext' => __("Pause the slideshow when hovering over slider, then resume when no longer hovering.", "ml-slider")
                                                        ),
                                                        'reverse' => array(
                                                            'priority' => 70,
                                                            'type' => 'checkbox',
                                                            'label' => __("Reverse", "ml-slider"),
                                                            'class' => 'option flex',
                                                            'checked' => $this->slider->get_setting('reverse') == 'true' ? 'checked' : '',
                                                            'helptext' => __("Reverse the animation direction", "ml-slider")
                                                        ),
                                                        'delay' => array(
                                                            'priority' => 80,
                                                            'type' => 'number',
                                                            'size' => 3,
                                                            'min' => 500,
                                                            'max' => 10000,
                                                            'step' => 100,
                                                            'value' => $this->slider->get_setting('delay'),
                                                            'label' => __("Slide delay", "ml-slider"),
                                                            'class' => 'option coin flex responsive nivo',
                                                            'helptext' => __("How long to display each slide, in milliseconds", "ml-slider"),
                                                            'after' => _x("ms", "Short for milliseconds", "ml-slider")
                                                        ),
                                                        'animationSpeed' => array(
                                                            'priority' => 90,
                                                            'type' => 'number',
                                                            'size' => 3,
                                                            'min' => 0,
                                                            'max' => 2000,
                                                            'step' => 100,
                                                            'value' => $this->slider->get_setting('animationSpeed'),
                                                            'label' => __("Animation speed", "ml-slider"),
                                                            'class' => 'option flex responsive nivo',
                                                            'helptext' => __("Set the speed of animations, in milliseconds", "ml-slider"),
                                                            'after' => _x("ms", "Short for milliseconds", "ml-slider")
                                                        ),
                                                        'slices' => array(
                                                            'priority' => 100,
                                                            'type' => 'number',
                                                            'size' => 3,
                                                            'min' => 0,
                                                            'max' => 20,
                                                            'step' => 1,
                                                            'value' => $this->slider->get_setting('slices'),
                                                            'label' => __("Number of slices", "ml-slider"),
                                                            'class' => 'option nivo',
                                                            'helptext' => __("Number of slices", "ml-slider"),
                                                            'after' => _x("ms", "Short for milliseconds", "ml-slider")
                                                        ),
                                                        'spw' => array(
                                                            'priority' => 110,
                                                            'type' => 'number',
                                                            'size' => 3,
                                                            'min' => 0,
                                                            'max' => 20,
                                                            'step' => 1,
                                                            'value' => $this->slider->get_setting('spw'),
                                                            'label' => __("Number of squares", "ml-slider") . " (" . __("Width", "ml-slider") . ")",
                                                            'class' => 'option nivo',
                                                            'helptext' => __("Number of squares", "ml-slider"),
                                                            'after' => ''
                                                        ),
                                                        'sph' => array(
                                                            'priority' => 120,
                                                            'type' => 'number',
                                                            'size' => 3,
                                                            'min' => 0,
                                                            'max' => 20,
                                                            'step' => 1,
                                                            'value' => $this->slider->get_setting('sph'),
                                                            'label' => __("Number of squares", "ml-slider") . " (" . __("Height", "ml-slider") . ")",
                                                            'class' => 'option nivo',
                                                            'helptext' => __("Number of squares", "ml-slider"),
                                                            'after' => ''
                                                        ),
                                                        'direction' => array(
                                                            'priority' => 130,
                                                            'type' => 'select',
                                                            'label' => __("Slide direction", "ml-slider"),
                                                            'class' => 'option flex',
                                                            'helptext' => __("Select the sliding direction", "ml-slider"),
                                                            'value' => $this->slider->get_setting('direction'),
                                                            'options' => array(
                                                                'horizontal' => array( 'label' => __("Horizontal", "ml-slider"), 'class' => '' ),
                                                                'vertical' => array( 'label' => __("Vertical", "ml-slider"), 'class' => '' ),
                                                            )
                                                        ),
                                                        'easing' => array(
                                                            'priority' => 140,
                                                            'type' => 'select',
                                                            'label' => __("Easing", "ml-slider"),
                                                            'class' => 'option flex',
                                                            'helptext' => __("Animation easing effect", "ml-slider"),
                                                            'value' => $this->slider->get_setting('easing'),
                                                            'options' => $this->get_easing_options()
                                                        ),
                                                        'prevText' => array(
                                                            'priority' => 150,
                                                            'type' => 'text',
                                                            'label' => __("Previous text", "ml-slider"),
                                                            'class' => 'option coin flex responsive nivo',
                                                            'helptext' => __("Set the text for the 'previous' direction item", "ml-slider"),
                                                            'value' => $this->slider->get_setting('prevText') == 'false' ? '' : $this->slider->get_setting('prevText')
                                                        ),
                                                        'nextText' => array(
                                                            'priority' => 160,
                                                            'type' => 'text',
                                                            'label' => __("Next text", "ml-slider"),
                                                            'class' => 'option coin flex responsive nivo',
                                                            'helptext' => __("Set the text for the 'next' direction item", "ml-slider"),
                                                            'value' => $this->slider->get_setting('nextText') == 'false' ? '' : $this->slider->get_setting('nextText')
                                                        ),
                                                        'sDelay' => array(
                                                            'priority' => 170,
                                                            'type' => 'number',
                                                            'size' => 3,
                                                            'min' => 0,
                                                            'max' => 500,
                                                            'step' => 10,
                                                            'value' => $this->slider->get_setting('sDelay'),
                                                            'label' => __("Square delay", "ml-slider"),
                                                            'class' => 'option coin',
                                                            'helptext' => __("Delay between squares in ms", "ml-slider"),
                                                            'after' => _x("ms", "Short for milliseconds", "ml-slider")
                                                        ),
                                                        'opacity' => array(
                                                            'priority' => 180,
                                                            'type' => 'text',
                                                            'value' => $this->slider->get_setting('opacity'),
                                                            'label' => __("Opacity", "ml-slider"),
                                                            'class' => 'option coin',
                                                            'helptext' => __("Opacity of title and navigation, between 0 and 1", "ml-slider"),
                                                            'after' => ''
                                                        ),
                                                        'titleSpeed' => array(
                                                            'priority' => 190,
                                                            'type' => 'number',
                                                            'size' => 3,
                                                            'min' => 0,
                                                            'max' => 10000,
                                                            'step' => 100,
                                                            'value' => $this->slider->get_setting('titleSpeed'),
                                                            'label' => __("Caption speed", "ml-slider"),
                                                            'class' => 'option coin',
                                                            'helptext' => __("Set the fade in speed of the caption", "ml-slider"),
                                                            'after' => _x("ms", "Short for milliseconds", "ml-slider")
                                                        ),
                                                        'developerOptions' => array(
                                                            'priority' => 195,
                                                            'type' => 'divider',
                                                            'class' => 'option coin flex responsive nivo',
                                                            'value' => __("Developer options", "ml-slider")
                                                        ),
                                                        'cssClass' => array(
                                                            'priority' => 200,
                                                            'type' => 'text',
                                                            'label' => __("CSS classes", "ml-slider"),
                                                            'class' => 'option coin flex responsive nivo',
                                                            'helptext' => __("Specify any custom CSS Classes you would like to be added to the slider wrapper", "ml-slider"),
                                                            'value' => $this->slider->get_setting('cssClass') == 'false' ? '' : $this->slider->get_setting('cssClass')
                                                        ),
                                                        'printCss' => array(
                                                            'priority' => 210,
                                                            'type' => 'checkbox',
                                                            'label' => __("Print CSS", "ml-slider"),
                                                            'class' => 'option coin flex responsive nivo useWithCaution',
                                                            'checked' => $this->slider->get_setting('printCss') == 'true' ? 'checked' : '',
                                                            'helptext' => __("Uncheck this is you would like to include your own CSS", "ml-slider")
                                                        ),
                                                        'printJs' => array(
                                                            'priority' => 220,
                                                            'type' => 'checkbox',
                                                            'label' => __("Print JS", "ml-slider"),
                                                            'class' => 'option coin flex responsive nivo useWithCaution',
                                                            'checked' => $this->slider->get_setting('printJs') == 'true' ? 'checked' : '',
                                                            'helptext' => __("Uncheck this is you would like to include your own Javascript", "ml-slider")
                                                        ),
                                                        'noConflict' => array(
                                                            'priority' => 230,
                                                            'type' => 'checkbox',
                                                            'label' => __("No conflict mode", "ml-slider"),
                                                            'class' => 'option flex',
                                                            'checked' => $this->slider->get_setting('noConflict') == 'true' ? 'checked' : '',
                                                            'helptext' => __("Delay adding the flexslider class to the slideshow", "ml-slider")
                                                        ),
                                                    );

                                                    $aFields = apply_filters('metaslider_advanced_settings', $aFields, $this->slider);

                                                    echo $this->build_settings_rows($aFields);
                                                ?>
                                            </tbody>
                                        </table>
                                    </div>
                                </div>
								</div>
								</metaslider-settings-viewer>

                                <?php $url = wp_nonce_url(admin_url("admin-post.php?action=metaslider_delete_slider&amp;slider_id={$this->slider->id}"), "metaslider_delete_slider"); ?>
								<div class="ms-delete-save">
									<a @click.prevent="deleteSlideshow()" class='ms-delete-slideshow' href='<?php echo $url ?>'><?php _e('Delete slideshow', 'ml-slider'); ?></a>
								</div>
                            </div>
                            <?php } ?>
                        </div>
                    </div>
                </div>
			</div>
		</form>
		<metaslider-preview
			slideshow-id="<?php echo $this->slider->id; ?>"
			theme-identifier="<?php echo $theme_id; ?>"
			:showButton="false"></metaslider-preview>
		<metaslider-import-module></metaslider-import-module>
		<metaslider-utility-modal></metaslider-utility-modal>
		<?php do_action('metaslider_add_external_components'); ?>
		</span>
		</metaslider>
        </div>
        <?php
    }

    /**
     * Append the 'Add Slideshow' button to selected admin pages (classic editor)
     * Uses the media_buttons filter
     */
    public function insert_metaslider_button()
    {
        $capability = apply_filters('metaslider_capability', 'edit_others_posts');
        if (!current_user_can($capability)) {
            return;
        }

        global $pagenow;
        if (!in_array($pagenow, array('post.php', 'page.php', 'post-new.php', 'post-edit.php'))) {
            return;
        }

        printf(
            '
			<a href="#TB_inline?&inlineId=choose-meta-slider" class="thickbox button" title="%s">
				<span class="wp-media-buttons-icon"
					style="background:url(%s/metaslider/matchalabs.png);background-repeat:no-repeat;background-position:left bottom;position: relative;top:-2px;right:-2px"></span>%s</a>',
            __("Select slideshow to insert into post", "ml-slider"),
            METASLIDER_ASSETS_URL,
            __("Add slideshow", "ml-slider")
        );
    }

    /**
     * Append the 'Choose MetaSlider' thickbox content to the bottom of selected admin pages
     */
    public function admin_footer()
    {
        global $pagenow;

        // Only run in post/page creation and edit screens
        if (in_array($pagenow, array( 'post.php', 'page.php', 'post-new.php', 'post-edit.php' ))) {
            $sliders = $this->all_meta_sliders('title'); ?>

            <script>
                jQuery(document).ready(function() {
                  jQuery('#insertMetaSlider').on('click', function() {
					var id = jQuery('#metaslider-select option:selected').val();
                    window.send_to_editor('[metaslider id=' + id + ']');
                    tb_remove();
                  })
                });
            </script>

            <div id="choose-meta-slider" style="display: none;">
                <div class="wrap">
                    <?php
                        if (count($sliders)) {
                            echo "<h3 style='margin-bottom: 20px;'>" . _x("Insert MetaSlider", 'Keep the plugin name "MetaSlider" when possible', "ml-slider") . "</h3>";
                            echo "<select id='metaslider-select'>";
                            echo "<option disabled=disabled>" . __("Choose slideshow", "ml-slider") . "</option>";
                            foreach ($sliders as $slider) {
                                echo "<option value='{$slider['id']}'>{$slider['title']}</option>";
                            }
                            echo "</select>";
                            echo "<button class='button primary' id='insertMetaSlider'>" . __("Insert slideshow", "ml-slider") . "</button>";
                        } else {
                            _e("No slideshows found", "ml-slider");
                        } ?>
                </div>
            </div>

            <?php
        }
    }


    /**
     * Return the MetaSlider pro upgrade iFrame
     */
    public function upgrade_to_pro_tab_layer()
    {
        if (function_exists('is_plugin_active') && ! is_plugin_active('ml-slider-pro/ml-slider-pro.php')) {
            return wp_iframe(array($this, 'upgrade_to_pro_iframe_layer'));
        }
    }

    /**
     * Media Manager iframe HTML - vimeo
     */
    public function upgrade_to_pro_iframe_layer()
    {
        $link = apply_filters('metaslider_hoplink', 'https://www.metaslider.com/upgrade/');
        $link .= '?utm_source=lite&amp;utm_medium=more-slide-types-layer&amp;utm_campaign=pro';
        $this->upgrade_to_pro_iframe(
            array(
                "<img src='" . METASLIDER_ADMIN_URL . "images/upgrade/layers.png' alt='' />",
                "<p>" . sprintf(_x("Ideal for easily creating eye-catching presentations and slideshows using stunning effects with %s 30 animation options %s and a beautiful, easy to use interface.", 'Translators: %s opens and closes a strong tag', 'ml-slider'), '<strong>', '</strong>') . " " . sprintf(_x('Layers can include %1$s text, HTML, images, videos %2$s and even %1$s shortcodes%2$s!', 'Translators: %1$s opens and %2$s closes a strong tag', 'ml-slider'), '<strong>', '</strong>') . "</p>",
                "<p>" . __("Additional optimization and customization options including using a video as the slide background, and adjusting the padding and background color of each layer.", 'ml-slider') . "</p>",
                "<a class='probutton button button-primary button-hero' href='{$link}' target='_blank'>" . __('Find out more about all the features of the Add-on Pack here', 'ml-slider') . "</a>",
                "<p>" . __('Opens in a new window', 'ml-slider') . "</p>"
            )
        );
    }

    /**
     * Return the MetaSlider pro upgrade iFrame for Vimeo
     */
    public function upgrade_to_pro_tab_vimeo()
    {
        if (function_exists('is_plugin_active') && ! is_plugin_active('ml-slider-pro/ml-slider-pro.php')) {
            return wp_iframe(array($this, 'upgrade_to_pro_iframe_vimeo'));
        }
    }

    /**
     * Media Manager iframe HTML - vimeo
     */
    public function upgrade_to_pro_iframe_vimeo()
    {
        $link = apply_filters('metaslider_hoplink', 'https://www.metaslider.com/upgrade/');
        $link .= '?utm_source=lite&amp;utm_medium=more-slide-types-vimeo&amp;utm_campaign=pro';
        $this->upgrade_to_pro_iframe(
            array(
                "<img src='" . METASLIDER_ADMIN_URL . "images/upgrade/vimeo.png' alt='' />",
                "<h3>" . __('Create a slideshow full of your favorite videos easily and quickly by simply adding a URL to a Vimeo slide.', 'ml-slider') . "</h3>",
                "<p>" . __('Features include an automatic play/pause function, in which your slideshow will detect when you set a video to play and continue once the video has finished.', 'ml-slider') . "</p>",
                "<p>" . __('You could even have the slider autoplay a video, giving you a smooth, completely automatic presentation!', 'ml-slider') . "</p>",
                "<a class='probutton button button-primary button-hero' href='{$link}' target='_blank'>" . __('Find out more about all the features of the Add-on Pack here', 'ml-slider') . "</a>",
                "<p>" . __('Opens in a new window', 'ml-slider') . "</p>"
            )
        );
    }

    /**
     * Return the MetaSlider pro upgrade iFrame
     */
    public function upgrade_to_pro_tab_youtube()
    {
        if (function_exists('is_plugin_active') && ! is_plugin_active('ml-slider-pro/ml-slider-pro.php')) {
            return wp_iframe(array($this, 'upgrade_to_pro_iframe_youtube'));
        }
    }
    /**
     * Media Manager iframe HTML - youtube
     */
    public function upgrade_to_pro_iframe_youtube()
    {
        $link = apply_filters('metaslider_hoplink', 'https://www.metaslider.com/upgrade/');
        $link .= '?utm_source=lite&amp;utm_medium=more-slide-types-youtube&amp;utm_campaign=pro';
        $this->upgrade_to_pro_iframe(
            array(
                "<img src='" . METASLIDER_ADMIN_URL . "images/upgrade/youtube.png' alt='' />",
                "<h3>" . __('Create a slideshow full of your favorite videos easily and quickly by simply adding a URL to a YouTube slide.', 'ml-slider') . "</h3>",
                "<p>" . __('Features include an automatic play/pause function, in which your slideshow will detect when you set a video to play and continue once the video has finished.', 'ml-slider') . "</p>",
                "<p>" . __('You could even have the slider autoplay a video, giving you a smooth, completely automatic presentation!', 'ml-slider') . "</p>",
                "<a class='probutton button button-primary button-hero' href='{$link}' target='_blank'>" . __('Find out more about all the features of the Add-on Pack here', 'ml-slider') . "</a>",
                "<p>" . __('Opens in a new window', 'ml-slider') . "</p>"
            )
        );
    }
    /**
     * Return the MetaSlider pro upgrade iFrame
     */
    public function upgrade_to_pro_tab_post_feed()
    {
        if (function_exists('is_plugin_active') && ! is_plugin_active('ml-slider-pro/ml-slider-pro.php')) {
            return wp_iframe(array($this, 'upgrade_to_pro_iframe_post_feed'));
        }
    }
    /**
     * Media Manager iframe HTML - post_feed
     */
    public function upgrade_to_pro_iframe_post_feed()
    {
        $link = apply_filters('metaslider_hoplink', 'https://www.metaslider.com/upgrade/');
        $link .= '?utm_source=lite&amp;utm_medium=more-slide-types-feed&amp;utm_campaign=pro';
        $this->upgrade_to_pro_iframe(
            array(
                "<img src='" . METASLIDER_ADMIN_URL . "images/upgrade/post-feed.png' alt='' />",
                "<p>" . sprintf(_x('Show off your %1$sblog posts%2$s, %1$sevents%2$s, %1$sWooCommerce products%2$s and other content with %1$sPost Feed%2$s.', 'Translators: %1$s opens and %2$s closes a strong tag', 'ml-slider'), '<strong>', '</strong>') . "</p>",
                "<p>" . __('Customise and control which post types you want to display, their order and how to restrict posts to certain tags or categories.', 'ml-slider') . "</p>",
                "<p>" . __('Post Feed slides can also be used with other slide types to either show one post at a time or in a carousel mode, allowing you to show off a large number of your latest posts in a small amount of space.', 'ml-slider') . "</p>",
                "<a class='probutton button button-primary button-hero' href='{$link}' target='_blank'>" . __('Find out more about all the features of the Add-on Pack here', 'ml-slider') . "</a>",
                "<p>" . __('Opens in a new window', 'ml-slider') . "</p>"
            )
        );
    }

    /**
     * Upgrade to pro Iframe - Render
     *
     * @param array $content The HTML to render
     */
    public function upgrade_to_pro_iframe($content)
    {
        echo "<div style='padding:3rem;max-width:720px;margin:0 auto;text-align:center'>";
        echo implode("", $content);
        echo "</div>";
    }

    /**
     * Adds extra links to the plugin activation page
     *
     * @param  array  $meta   Extra meta links
     * @param  string $file   Specific file to compare against the base plugin
     * @param  string $data   Data for the meat links
     * @param  string $status Staus of the meta links
     * @return array          Return the meta links array
     */
    public function get_extra_meta_links($meta, $file, $data, $status)
    {
        if (plugin_basename(__FILE__) == $file) {
            $plugin_page = admin_url('admin.php?page=metaslider');
            $nonce = wp_create_nonce('metaslider_request');
            $meta[] = "<a href='{$plugin_page}' onclick=\"event.preventDefault();var link = jQuery(this);jQuery.post(ajaxurl, {action: 'set_tour_status', current_step: '0', METASLIDER_NONCE: '{$nonce}'}, function(data) { window.location = link.attr('href'); });\">" . __('Take a tour', 'ml-slider') . "</a>";
            if (metaslider_pro_is_installed()) {
                $meta[] = "<a href='https://www.metaslider.com/support/' target='_blank'>" . __('Premium Support', 'ml-slider') . "</a>";
            } else {
                $upgrade_link = apply_filters('metaslider_hoplink', 'https://www.metaslider.com/upgrade/');
                $meta[] = "<a href='{$upgrade_link}' target='_blank'>" . __('Add-ons', 'ml-slider') . "</a>";
                $meta[] = "<a href='https://wordpress.org/support/plugin/ml-slider/' target='_blank'>" . __('Support', 'ml-slider') . "</a>";
            }
            $meta[] = "<a href='https://www.metaslider.com/documentation/' target='_blank'>" . __('Documentation', 'ml-slider') . "</a>";
            $meta[] = "<a href='https://wordpress.org/support/plugin/ml-slider/reviews#new-post' target='_blank' title='" . __('Leave a review', 'ml-slider') . "'><i class='ml-stars'><svg xmlns='http://www.w3.org/2000/svg' width='15' height='15' viewBox='0 0 24 24' fill='none' stroke='currentColor' stroke-width='2' stroke-linecap='round' stroke-linejoin='round' class='feather feather-star'><polygon points='12 2 15.09 8.26 22 9.27 17 14.14 18.18 21.02 12 17.77 5.82 21.02 7 14.14 2 9.27 8.91 8.26 12 2'/></svg><svg xmlns='http://www.w3.org/2000/svg' width='15' height='15' viewBox='0 0 24 24' fill='none' stroke='currentColor' stroke-width='2' stroke-linecap='round' stroke-linejoin='round' class='feather feather-star'><polygon points='12 2 15.09 8.26 22 9.27 17 14.14 18.18 21.02 12 17.77 5.82 21.02 7 14.14 2 9.27 8.91 8.26 12 2'/></svg><svg xmlns='http://www.w3.org/2000/svg' width='15' height='15' viewBox='0 0 24 24' fill='none' stroke='currentColor' stroke-width='2' stroke-linecap='round' stroke-linejoin='round' class='feather feather-star'><polygon points='12 2 15.09 8.26 22 9.27 17 14.14 18.18 21.02 12 17.77 5.82 21.02 7 14.14 2 9.27 8.91 8.26 12 2'/></svg><svg xmlns='http://www.w3.org/2000/svg' width='15' height='15' viewBox='0 0 24 24' fill='none' stroke='currentColor' stroke-width='2' stroke-linecap='round' stroke-linejoin='round' class='feather feather-star'><polygon points='12 2 15.09 8.26 22 9.27 17 14.14 18.18 21.02 12 17.77 5.82 21.02 7 14.14 2 9.27 8.91 8.26 12 2'/></svg><svg xmlns='http://www.w3.org/2000/svg' width='15' height='15' viewBox='0 0 24 24' fill='none' stroke='currentColor' stroke-width='2' stroke-linecap='round' stroke-linejoin='round' class='feather feather-star'><polygon points='12 2 15.09 8.26 22 9.27 17 14.14 18.18 21.02 12 17.77 5.82 21.02 7 14.14 2 9.27 8.91 8.26 12 2'/></svg></i></a>";
        }
        return $meta;
    }

    /**
     * Adds styles to admin head to allow for stars animation and coloring
     */
    public function add_star_styles()
    {
        if (metaslider_user_is_on_admin_page('plugins.php')) {?>
            <style>
                .ml-stars{display:inline-block;color:#ffb900;position:relative;top:3px}
                .ml-stars svg{fill:#ffb900}
                .ml-stars svg:hover{fill:#ffb900}
                .ml-stars svg:hover ~ svg{fill:none}
            </style>
    <?php }
    }

    /**
     * Add a 'property=stylesheet' attribute to the MetaSlider CSS links for HTML5 validation
     *
     * @since 3.3.4
     * @param string $tag    Specifies tag
     * @param string $handle Checks for the handle to add property to
     * @return string
     */
    public function add_property_attribute_to_stylesheet_links($tag, $handle)
    {
        if (strpos($handle, 'metaslider') !== false && strpos($tag, "property='") === false) {
            // we're only filtering tags with metaslider in the handle, and links which don't already have a property attribute
            $tag = str_replace("/>", "property='stylesheet' />", $tag);
        }

        return $tag;
    }
}

// Load in MetaGallery unless the user wants to use the dev version
if (!defined('METAGALLERY_ENABLE_DEV')) {
    define('METAGALLERY_ENABLE_DEV', false);
}
if (file_exists(dirname(__FILE__) . '/metagallery/metagallery.php') && !METAGALLERY_ENABLE_DEV) {
    if (!defined('METAGALLERY_TEXTDOMAIN')) {
        define('METAGALLERY_SIDELOAD_FROM', 'metaslider');
        define('METAGALLERY_TEXTDOMAIN', 'ml-slider');
        define('METAGALLERY_PATH', plugin_dir_path(__FILE__) . 'metagallery/');
        define('METAGALLERY_BASE_URL', plugin_dir_url(__FILE__) . 'metagallery/');
        require plugin_dir_path(__FILE__) . 'metagallery/metagallery.php';
    }
}

endif;

add_action('plugins_loaded', array(MetaSliderPlugin::get_instance(), 'setup'), 10);