| 1 |  |  | <?php | 
            
                                                                                                            
                            
            
                                    
            
            
                | 2 |  |  | /** | 
            
                                                                                                            
                            
            
                                    
            
            
                | 3 |  |  |  * Module Name: Comment Likes | 
            
                                                                                                            
                            
            
                                    
            
            
                | 4 |  |  |  * Module Description: Increase visitor engagement by adding a Like button to comments. | 
            
                                                                                                            
                            
            
                                    
            
            
                | 5 |  |  |  * Sort Order: 39 | 
            
                                                                                                            
                            
            
                                    
            
            
                | 6 |  |  |  * Recommendation Order: 17 | 
            
                                                                                                            
                            
            
                                    
            
            
                | 7 |  |  |  * First Introduced: 5.1 | 
            
                                                                                                            
                            
            
                                    
            
            
                | 8 |  |  |  * Requires Connection: Yes | 
            
                                                                                                            
                            
            
                                    
            
            
                | 9 |  |  |  * Auto Activate: No | 
            
                                                                                                            
                            
            
                                    
            
            
                | 10 |  |  |  * Module Tags: Social | 
            
                                                                                                            
                            
            
                                    
            
            
                | 11 |  |  |  * Additional Search Queries: like widget, like button, like, likes | 
            
                                                                                                            
                            
            
                                    
            
            
                | 12 |  |  |  */ | 
            
                                                                                                            
                            
            
                                    
            
            
                | 13 |  |  |  | 
            
                                                                                                            
                            
            
                                    
            
            
                | 14 |  |  | Jetpack::dns_prefetch( array( | 
            
                                                                                                            
                            
            
                                    
            
            
                | 15 |  |  | 	'//widgets.wp.com', | 
            
                                                                                                            
                            
            
                                    
            
            
                | 16 |  |  | 	'//s0.wp.com', | 
            
                                                                                                            
                            
            
                                    
            
            
                | 17 |  |  | 	'//s1.wp.com', | 
            
                                                                                                            
                            
            
                                    
            
            
                | 18 |  |  | 	'//s2.wp.com', | 
            
                                                                                                            
                            
            
                                    
            
            
                | 19 |  |  | 	'//0.gravatar.com', | 
            
                                                                                                            
                            
            
                                    
            
            
                | 20 |  |  | 	'//1.gravatar.com', | 
            
                                                                                                            
                            
            
                                    
            
            
                | 21 |  |  | 	'//2.gravatar.com', | 
            
                                                                                                            
                            
            
                                    
            
            
                | 22 |  |  | ) ); | 
            
                                                                                                            
                            
            
                                    
            
            
                | 23 |  |  |  | 
            
                                                                                                            
                            
            
                                    
            
            
                | 24 |  |  | require_once dirname( __FILE__ ) . '/likes/jetpack-likes-master-iframe.php'; | 
            
                                                                                                            
                            
            
                                    
            
            
                | 25 |  |  | require_once dirname( __FILE__ ) . '/likes/jetpack-likes-settings.php'; | 
            
                                                                                                            
                            
            
                                    
            
            
                | 26 |  |  |  | 
            
                                                                                                            
                                                                
            
                                    
            
            
                | 27 |  |  | class Jetpack_Comment_Likes { | 
            
                                                                        
                            
            
                                    
            
            
                | 28 |  |  | 	public static function init() { | 
            
                                                                        
                            
            
                                    
            
            
                | 29 |  |  | 		static $instance = NULL; | 
            
                                                                        
                            
            
                                    
            
            
                | 30 |  |  |  | 
            
                                                                        
                            
            
                                    
            
            
                | 31 |  |  | 		if ( ! $instance ) { | 
            
                                                                        
                            
            
                                    
            
            
                | 32 |  |  | 			$instance = new Jetpack_Comment_Likes; | 
            
                                                                        
                            
            
                                    
            
            
                | 33 |  |  | 		} | 
            
                                                                        
                            
            
                                    
            
            
                | 34 |  |  |  | 
            
                                                                        
                            
            
                                    
            
            
                | 35 |  |  | 		return $instance; | 
            
                                                                        
                            
            
                                    
            
            
                | 36 |  |  | 	} | 
            
                                                                                                            
                            
            
                                    
            
            
                | 37 |  |  |  | 
            
                                                                                                            
                            
            
                                    
            
            
                | 38 |  |  | 	private function __construct() { | 
            
                                                                                                            
                            
            
                                    
            
            
                | 39 |  |  | 		$this->settings = new Jetpack_Likes_Settings(); | 
                            
                    |  |  |  | 
                                                                                        
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                | 40 |  |  | 		add_action( 'init', array( $this, 'frontend_init' ) ); | 
            
                                                                                                            
                            
            
                                    
            
            
                | 41 |  |  | 		add_action( 'admin_init', array( $this, 'admin_init' ) ); | 
            
                                                                                                            
                            
            
                                    
            
            
                | 42 |  |  |  | 
            
                                                                                                            
                            
            
                                    
            
            
                | 43 |  |  | 		if ( ! Jetpack::is_module_active( 'likes' ) ) { | 
            
                                                                                                            
                            
            
                                    
            
            
                | 44 |  |  | 			$active = Jetpack::get_active_modules(); | 
            
                                                                                                            
                            
            
                                    
            
            
                | 45 |  |  |  | 
            
                                                                                                            
                            
            
                                                                    
                                                                                                        
            
            
                | 46 |  | View Code Duplication | 			if ( ! in_array( 'sharedaddy', $active ) && ! in_array( 'publicize', $active ) ) { | 
            
                                                                                                            
                            
            
                                    
            
            
                | 47 |  |  | 				// we don't have a sharing page yet | 
            
                                                                                                            
                            
            
                                    
            
            
                | 48 |  |  | 				add_action( 'admin_menu', array( $this->settings, 'sharing_menu' ) ); | 
            
                                                                                                            
                            
            
                                    
            
            
                | 49 |  |  | 			} | 
            
                                                                                                            
                            
            
                                    
            
            
                | 50 |  |  |  | 
            
                                                                                                            
                            
            
                                                                    
                                                                                                        
            
            
                | 51 |  | View Code Duplication | 			if ( in_array( 'publicize', $active ) && ! in_array( 'sharedaddy', $active ) ) { | 
            
                                                                                                            
                            
            
                                    
            
            
                | 52 |  |  | 				// we have a sharing page but not the global options area | 
            
                                                                                                            
                            
            
                                    
            
            
                | 53 |  |  | 				add_action( 'pre_admin_screen_sharing', array( $this->settings, 'sharing_block' ), 20 ); | 
            
                                                                                                            
                            
            
                                    
            
            
                | 54 |  |  | 				add_action( 'pre_admin_screen_sharing', array( $this->settings, 'updated_message' ), -10 ); | 
            
                                                                                                            
                            
            
                                    
            
            
                | 55 |  |  | 			} | 
            
                                                                                                            
                            
            
                                    
            
            
                | 56 |  |  |  | 
            
                                                                                                            
                            
            
                                                                    
                                                                                                        
            
            
                | 57 |  | View Code Duplication | 			if( ! in_array( 'sharedaddy', $active ) ) { | 
            
                                                                                                            
                            
            
                                    
            
            
                | 58 |  |  | 				add_action( 'admin_init', array( $this->settings, 'process_update_requests_if_sharedaddy_not_loaded' ) ); | 
            
                                                                                                            
                            
            
                                    
            
            
                | 59 |  |  | 				add_action( 'sharing_global_options', array( $this->settings, 'admin_settings_showbuttonon_init' ), 19 ); | 
            
                                                                                                            
                            
            
                                    
            
            
                | 60 |  |  | 				add_action( 'sharing_admin_update', array( $this->settings, 'admin_settings_showbuttonon_callback' ), 19 ); | 
            
                                                                                                            
                            
            
                                    
            
            
                | 61 |  |  | 				add_action( 'admin_init', array( $this->settings, 'add_meta_box' ) ); | 
            
                                                                                                            
                            
            
                                    
            
            
                | 62 |  |  | 			} else { | 
            
                                                                                                            
                            
            
                                    
            
            
                | 63 |  |  | 				add_filter( 'sharing_meta_box_title', array( $this->settings, 'add_likes_to_sharing_meta_box_title' ) ); | 
            
                                                                                                            
                            
            
                                    
            
            
                | 64 |  |  | 				add_action( 'start_sharing_meta_box_content', array( $this->settings, 'meta_box_content' ) ); | 
            
                                                                                                            
                            
            
                                    
            
            
                | 65 |  |  | 			} | 
            
                                                                                                            
                            
            
                                    
            
            
                | 66 |  |  |  | 
            
                                                                                                            
                            
            
                                    
            
            
                | 67 |  |  | 			add_action( 'save_post', array( $this->settings, 'meta_box_save' ) ); | 
            
                                                                                                            
                            
            
                                    
            
            
                | 68 |  |  | 			add_action( 'edit_attachment', array( $this->settings, 'meta_box_save' ) ); | 
            
                                                                                                            
                            
            
                                    
            
            
                | 69 |  |  | 			add_action( 'sharing_global_options', array( $this->settings, 'admin_settings_init' ), 20 ); | 
            
                                                                                                            
                            
            
                                    
            
            
                | 70 |  |  | 			add_action( 'sharing_admin_update',   array( $this->settings, 'admin_settings_callback' ), 20 ); | 
            
                                                                                                            
                            
            
                                    
            
            
                | 71 |  |  | 		} | 
            
                                                                                                            
                            
            
                                    
            
            
                | 72 |  |  | 	} | 
            
                                                                                                            
                            
            
                                    
            
            
                | 73 |  |  |  | 
            
                                                                                                            
                            
            
                                    
            
            
                | 74 |  |  | 	public function admin_init() { | 
            
                                                                                                            
                            
            
                                    
            
            
                | 75 |  |  | 		add_filter( 'manage_edit-comments_columns', array( $this, 'add_like_count_column' ) ); | 
            
                                                                                                            
                            
            
                                    
            
            
                | 76 |  |  | 		add_action( 'manage_comments_custom_column', array( $this, 'comment_likes_edit_column' ), 10, 2 ); | 
            
                                                                                                            
                            
            
                                    
            
            
                | 77 |  |  | 		add_action( 'admin_print_styles-edit-comments.php', array( $this, 'enqueue_admin_styles_scripts' ) ); | 
            
                                                                                                            
                            
            
                                    
            
            
                | 78 |  |  | 	} | 
            
                                                                                                            
                            
            
                                    
            
            
                | 79 |  |  |  | 
            
                                                                                                            
                            
            
                                    
            
            
                | 80 |  |  | 	public function comment_likes_edit_column( $column_name, $comment_id ) { | 
            
                                                                                                            
                            
            
                                    
            
            
                | 81 |  |  | 		if ( 'comment_likes' !== $column_name ) { | 
            
                                                                                                            
                            
            
                                    
            
            
                | 82 |  |  | 			return; | 
            
                                                                                                            
                            
            
                                    
            
            
                | 83 |  |  | 		} | 
            
                                                                                                            
                            
            
                                    
            
            
                | 84 |  |  |  | 
            
                                                                                                            
                            
            
                                    
            
            
                | 85 |  |  | 		$blog_id = Jetpack_Options::get_option( 'id' ); | 
            
                                                                                                            
                            
            
                                    
            
            
                | 86 |  |  |  | 
            
                                                                                                            
                            
            
                                    
            
            
                | 87 |  |  | 		$permalink = get_permalink( get_the_ID() ); | 
            
                                                                                                            
                            
            
                                    
            
            
                | 88 |  |  | 		?> | 
            
                                                                                                            
                            
            
                                    
            
            
                | 89 |  |  | 		<a title="" | 
            
                                                                                                            
                            
            
                                    
            
            
                | 90 |  |  | 		   data-comment-id="<?php echo (int) $comment_id; ?>" | 
            
                                                                                                            
                            
            
                                    
            
            
                | 91 |  |  | 		   data-blog-id="<?php echo (int) $blog_id; ?>" | 
            
                                                                                                            
                            
            
                                    
            
            
                | 92 |  |  | 		   class="comment-like-count" | 
            
                                                                                                            
                            
            
                                    
            
            
                | 93 |  |  | 		   id="comment-like-count-<?php echo (int) $comment_id; ?>" | 
            
                                                                                                            
                            
            
                                    
            
            
                | 94 |  |  | 		   href="<?php echo esc_url( $permalink ); ?>#comment-<?php echo (int) $comment_id; ?>" | 
            
                                                                                                            
                            
            
                                    
            
            
                | 95 |  |  | 		> | 
            
                                                                                                            
                            
            
                                    
            
            
                | 96 |  |  | 			<span class="like-count">0</span> | 
            
                                                                                                            
                            
            
                                    
            
            
                | 97 |  |  | 		</a> | 
            
                                                                                                            
                            
            
                                    
            
            
                | 98 |  |  | 		<?php | 
            
                                                                                                            
                            
            
                                    
            
            
                | 99 |  |  | 	} | 
            
                                                                                                            
                            
            
                                    
            
            
                | 100 |  |  |  | 
            
                                                                                                            
                            
            
                                    
            
            
                | 101 |  |  | 	function enqueue_admin_styles_scripts() { | 
            
                                                                                                            
                            
            
                                    
            
            
                | 102 |  |  | 		wp_enqueue_style( 'comment-like-count', plugins_url( 'comment-likes/admin-style.css', __FILE__ ), array(), JETPACK__VERSION ); | 
            
                                                                                                            
                            
            
                                    
            
            
                | 103 |  |  | 		wp_enqueue_script( 'comment-like-count', plugins_url( 'comment-likes/comment-like-count.js', __FILE__ ), array( 'jquery' ), JETPACK__VERSION ); | 
            
                                                                                                            
                            
            
                                    
            
            
                | 104 |  |  | 	} | 
            
                                                                                                            
                            
            
                                    
            
            
                | 105 |  |  |  | 
            
                                                                                                            
                            
            
                                    
            
            
                | 106 |  |  | 	public function add_like_count_column( $columns ) { | 
            
                                                                                                            
                            
            
                                    
            
            
                | 107 |  |  | 		$columns['comment_likes'] = '<span class="vers"><img title="' . esc_attr__( 'Comment likes', 'jetpack' ) . '" alt="' . esc_attr__( 'Comment likes', 'jetpack' ) . '" src="//s0.wordpress.com/i/like-grey-icon.png" /></span>'; | 
            
                                                                                                            
                            
            
                                    
            
            
                | 108 |  |  |  | 
            
                                                                                                            
                            
            
                                    
            
            
                | 109 |  |  | 		return $columns; | 
            
                                                                                                            
                            
            
                                    
            
            
                | 110 |  |  | 	} | 
            
                                                                                                            
                            
            
                                    
            
            
                | 111 |  |  |  | 
            
                                                                                                            
                            
            
                                    
            
            
                | 112 |  |  | 	public function frontend_init() { | 
            
                                                                                                            
                            
            
                                    
            
            
                | 113 |  |  | 		if ( is_admin() ) { | 
            
                                                                                                            
                            
            
                                    
            
            
                | 114 |  |  | 			return; | 
            
                                                                                                            
                            
            
                                    
            
            
                | 115 |  |  | 		} | 
            
                                                                                                            
                            
            
                                    
            
            
                | 116 |  |  |  | 
            
                                                                                                            
                            
            
                                    
            
            
                | 117 |  |  | 		add_action( 'wp_enqueue_scripts', array( $this, 'load_styles_register_scripts' ) ); | 
            
                                                                                                            
                            
            
                                    
            
            
                | 118 |  |  | 		add_filter( 'comment_text', array( $this, 'comment_likes' ), 10, 2 ); | 
            
                                                                                                            
                            
            
                                    
            
            
                | 119 |  |  | 	} | 
            
                                                                                                            
                            
            
                                    
            
            
                | 120 |  |  |  | 
            
                                                                                                            
                            
            
                                    
            
            
                | 121 |  |  | 	public function load_styles_register_scripts() { | 
            
                                                                                                            
                            
            
                                    
            
            
                | 122 |  |  | 		wp_enqueue_style( 'jetpack_likes', plugins_url( 'likes/style.css', __FILE__ ), array(), JETPACK__VERSION ); | 
            
                                                                                                            
                            
            
                                    
            
            
                | 123 |  |  | 		wp_enqueue_script( 'postmessage', plugins_url( '_inc/postmessage.js', dirname(__FILE__) ), array( 'jquery' ), JETPACK__VERSION, false ); | 
            
                                                                                                            
                            
            
                                    
            
            
                | 124 |  |  | 		wp_enqueue_script( 'jetpack_resize', plugins_url( '_inc/jquery.jetpack-resize.js' , dirname(__FILE__) ), array( 'jquery' ), JETPACK__VERSION, false ); | 
            
                                                                                                            
                            
            
                                    
            
            
                | 125 |  |  | 		wp_enqueue_script( 'jetpack_likes_queuehandler', plugins_url( 'likes/queuehandler.js' , __FILE__ ), array( 'jquery', 'postmessage', 'jetpack_resize' ), JETPACK__VERSION, true ); | 
            
                                                                                                            
                            
            
                                    
            
            
                | 126 |  |  | 	} | 
            
                                                                                                            
                            
            
                                    
            
            
                | 127 |  |  |  | 
            
                                                                                                            
                            
            
                                    
            
            
                | 128 |  |  | 	public function comment_likes( $content, $comment = null ) { | 
            
                                                                                                            
                            
            
                                    
            
            
                | 129 |  |  | 		if ( empty( $comment ) ) { | 
            
                                                                                                            
                            
            
                                    
            
            
                | 130 |  |  | 			return $content; | 
            
                                                                                                            
                            
            
                                    
            
            
                | 131 |  |  | 		} | 
            
                                                                                                            
                            
            
                                    
            
            
                | 132 |  |  |  | 
            
                                                                                                            
                            
            
                                    
            
            
                | 133 |  |  | 		if ( ! $this->settings->is_likes_visible() ) { | 
            
                                                                                                            
                            
            
                                    
            
            
                | 134 |  |  | 			return $content; | 
            
                                                                                                            
                            
            
                                    
            
            
                | 135 |  |  | 		} | 
            
                                                                                                            
                            
            
                                    
            
            
                | 136 |  |  |  | 
            
                                                                                                            
                            
            
                                    
            
            
                | 137 |  |  | 		$blog_id   = Jetpack_Options::get_option( 'id' ); | 
            
                                                                                                            
                            
            
                                    
            
            
                | 138 |  |  | 		$url       = home_url(); | 
            
                                                                                                            
                            
            
                                    
            
            
                | 139 |  |  | 		$url_parts = parse_url( $url ); | 
            
                                                                                                            
                            
            
                                    
            
            
                | 140 |  |  | 		$domain    = $url_parts['host']; | 
            
                                                                                                            
                            
            
                                    
            
            
                | 141 |  |  |  | 
            
                                                                                                            
                            
            
                                    
            
            
                | 142 |  |  | 		$comment_id = get_comment_ID(); | 
            
                                                                                                            
                            
            
                                    
            
            
                | 143 |  |  | 		if ( empty( $comment_id ) && ! empty( $comment->comment_ID ) ) { | 
            
                                                                                                            
                            
            
                                    
            
            
                | 144 |  |  | 			$comment_id = $comment->comment_ID; | 
            
                                                                                                            
                            
            
                                    
            
            
                | 145 |  |  | 		} | 
            
                                                                                                            
                            
            
                                    
            
            
                | 146 |  |  |  | 
            
                                                                                                            
                            
            
                                    
            
            
                | 147 |  |  | 		if ( empty( $content ) || empty( $comment_id ) ) { | 
            
                                                                                                            
                            
            
                                    
            
            
                | 148 |  |  | 			return $content; | 
            
                                                                                                            
                            
            
                                    
            
            
                | 149 |  |  | 		} | 
            
                                                                                                            
                            
            
                                    
            
            
                | 150 |  |  |  | 
            
                                                                                                            
                            
            
                                    
            
            
                | 151 |  |  | 		// In case master iframe hasn't been loaded. This could be the case when Post Likes module is disabled, | 
            
                                                                                                            
                            
            
                                    
            
            
                | 152 |  |  | 		// or on pages on which we have comments but post likes are disabled. | 
            
                                                                                                            
                            
            
                                    
            
            
                | 153 |  |  | 		if ( ! has_action( 'wp_footer', 'jetpack_likes_master_iframe' ) ) { | 
            
                                                                                                            
                            
            
                                    
            
            
                | 154 |  |  | 			add_action( 'wp_footer', 'jetpack_likes_master_iframe', 21 ); | 
            
                                                                                                            
                            
            
                                    
            
            
                | 155 |  |  | 		} | 
            
                                                                                                            
                            
            
                                    
            
            
                | 156 |  |  |  | 
            
                                                                                                            
                            
            
                                    
            
            
                | 157 |  |  | 		$uniqid = uniqid(); | 
            
                                                                                                            
                            
            
                                    
            
            
                | 158 |  |  |  | 
            
                                                                                                            
                            
            
                                    
            
            
                | 159 |  |  | 		$src     = sprintf( 'https://widgets.wp.com/likes/#blog_id=%1$d&comment_id=%2$d&origin=%3$s&obj_id=%1$d-%2$d-%4$s', $blog_id, $comment_id, $domain, $uniqid ); | 
            
                                                                                                            
                            
            
                                    
            
            
                | 160 |  |  | 		$name    = sprintf( 'like-comment-frame-%1$d-%2$d-%3$s', $blog_id, $comment_id, $uniqid ); | 
            
                                                                                                            
                            
            
                                    
            
            
                | 161 |  |  | 		$wrapper = sprintf( 'like-comment-wrapper-%1$d-%2$d-%3$s', $blog_id, $comment_id, $uniqid ); | 
            
                                                                                                            
                            
            
                                    
            
            
                | 162 |  |  |  | 
            
                                                                                                            
                            
            
                                    
            
            
                | 163 |  |  | 		$html = ''; | 
            
                                                                                                            
                            
            
                                    
            
            
                | 164 |  |  | 		$html .= "<div class='jetpack-comment-likes-widget-wrapper jetpack-likes-widget-unloaded' id='$wrapper' data-src='$src' data-name='$name'>"; | 
            
                                                                                                            
                            
            
                                    
            
            
                | 165 |  |  | 		$html .= "<div class='likes-widget-placeholder comment-likes-widget-placeholder comment-likes'><span class='loading'>" . esc_html__( 'Loading...', 'jetpack' ) . "</span></div>"; | 
            
                                                                                                            
                            
            
                                    
            
            
                | 166 |  |  | 		$html .= "<div class='comment-likes-widget jetpack-likes-widget comment-likes'><span class='comment-like-feedback'></span>"; | 
            
                                                                                                            
                            
            
                                    
            
            
                | 167 |  |  | 		$html .= "<span class='sd-text-color'></span><a class='sd-link-color'></a>"; | 
            
                                                                                                            
                            
            
                                    
            
            
                | 168 |  |  | 		$html .= '</div></div>'; | 
            
                                                                                                            
                            
            
                                    
            
            
                | 169 |  |  |  | 
            
                                                                                                            
                            
            
                                    
            
            
                | 170 |  |  | 		/** | 
            
                                                                                                            
                            
            
                                    
            
            
                | 171 |  |  | 		 * Filters the Comment Likes button content. | 
            
                                                                                                            
                            
            
                                    
            
            
                | 172 |  |  | 		 * | 
            
                                                                                                            
                            
            
                                    
            
            
                | 173 |  |  | 		 * @module comment-likes | 
            
                                                                                                            
                            
            
                                    
            
            
                | 174 |  |  | 		 * | 
            
                                                                                                            
                            
            
                                    
            
            
                | 175 |  |  | 		 * @since 5.1.0 | 
            
                                                                                                            
                            
            
                                    
            
            
                | 176 |  |  | 		 * | 
            
                                                                                                            
                            
            
                                    
            
            
                | 177 |  |  | 		 * @param string Comment Likes button content. | 
            
                                                                                                            
                            
            
                                    
            
            
                | 178 |  |  | 		 */ | 
            
                                                                                                            
                            
            
                                    
            
            
                | 179 |  |  | 		$like_button = apply_filters( 'comment_like_button', $html, '' ); | 
            
                                                                                                            
                            
            
                                    
            
            
                | 180 |  |  |  | 
            
                                                                                                            
                            
            
                                    
            
            
                | 181 |  |  | 		return $content . $like_button; | 
            
                                                                                                            
                            
            
                                    
            
            
                | 182 |  |  | 	} | 
            
                                                                                                            
                            
            
                                    
            
            
                | 183 |  |  | } | 
            
                                                                                                            
                            
            
                                    
            
            
                | 184 |  |  |  | 
            
                                                                                                            
                                                                
            
                                    
            
            
                | 185 |  |  | Jetpack_Comment_Likes::init(); | 
            
                                                        
            
                                    
            
            
                | 186 |  |  |  | 
            
                        
In PHP it is possible to write to properties without declaring them. For example, the following is perfectly valid PHP code:
Generally, it is a good practice to explictly declare properties to avoid accidental typos and provide IDE auto-completion: