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<?php
/**
* Handles hooking CMB2 forms/metaboxes into the post/attachement/user screens
* and handles hooking in and saving those fields.
*
* @since 2.0.0
*
* @category WordPress_Plugin
* @package CMB2
* @author WebDevStudios
* @license GPL-2.0+
* @link http://webdevstudios.com
*/
class CMB2_hookup {
/**
* Array of all hooks done (to be run once)
* @var array
* @since 2.0.0
*/
protected static $hooks_completed = array();
/**
* Only allow JS registration once
* @var bool
* @since 2.0.7
*/
protected static $js_registration_done = false;
/**
* Only allow CSS registration once
* @var bool
* @since 2.0.7
*/
protected static $css_registration_done = false;
/**
* Metabox Form ID
* @var CMB2 object
* @since 2.0.2
*/
protected $cmb;
/**
* The object type we are performing the hookup for
* @var string
* @since 2.0.9
*/
protected $object_type = 'post';
public function __construct( CMB2 $cmb ) {
$this->cmb = $cmb;
$this->hooks();
if ( is_admin() ) {
$this->admin_hooks();
}
}
public function hooks() {
// Handle oembed Ajax
$this->once( 'wp_ajax_cmb2_oembed_handler', array( cmb2_ajax(), 'oembed_handler' ) );
$this->once( 'wp_ajax_nopriv_cmb2_oembed_handler', array( cmb2_ajax(), 'oembed_handler' ) );
foreach ( get_class_methods( 'CMB2_Show_Filters' ) as $filter ) {
add_filter( 'cmb2_show_on', array( 'CMB2_Show_Filters', $filter ), 10, 3 );
}
}
public function admin_hooks() {
global $pagenow;
// register our scripts and styles for cmb
$this->once( 'admin_enqueue_scripts', array( __CLASS__, 'register_scripts' ), 8 );
$this->object_type = $this->cmb->mb_object_type();
if ( 'post' == $this->object_type ) {
add_action( 'add_meta_boxes', array( $this, 'add_metaboxes' ) );
add_action( 'add_attachment', array( $this, 'save_post' ) );
add_action( 'edit_attachment', array( $this, 'save_post' ) );
add_action( 'save_post', array( $this, 'save_post' ), 10, 2 );
$this->once( 'admin_enqueue_scripts', array( $this, 'do_scripts' ) );
} elseif ( 'comment' == $this->object_type ) {
add_action( 'add_meta_boxes_comment', array( $this, 'add_metaboxes' ) );
add_action( 'edit_comment', array( $this, 'save_comment' ) );
$this->once( 'admin_enqueue_scripts', array( $this, 'do_scripts' ) );
} elseif ( 'user' == $this->object_type ) {
$priority = $this->cmb->prop( 'priority' );
if ( ! is_numeric( $priority ) ) {
switch ( $priority ) {
case 'high':
$priority = 5;
break;
case 'low':
$priority = 20;
break;
default:
$priority = 10;
break;
}
}
add_action( 'show_user_profile', array( $this, 'user_metabox' ), $priority );
add_action( 'edit_user_profile', array( $this, 'user_metabox' ), $priority );
add_action( 'user_new_form', array( $this, 'user_new_metabox' ), $priority );
add_action( 'personal_options_update', array( $this, 'save_user' ) );
add_action( 'edit_user_profile_update', array( $this, 'save_user' ) );
add_action( 'user_register', array( $this, 'save_user' ) );
}
}
/**
* Registers styles for CMB2
* @since 2.0.7
*/
protected static function register_styles() {
if ( self::$css_registration_done ) {
return;
}
// Only use minified files if SCRIPT_DEBUG is off
$min = defined( 'SCRIPT_DEBUG' ) && SCRIPT_DEBUG ? '' : '.min';
$front = is_admin() ? '' : '-front';
// Filter required styles and register stylesheet
$styles = apply_filters( 'cmb2_style_dependencies', array() );
wp_register_style( 'cmb2-styles', cmb2_utils()->url( "css/cmb2{$front}{$min}.css" ), $styles );
self::$css_registration_done = true;
}
/**
* Registers scripts for CMB2
* @since 2.0.7
*/
protected static function register_js() {
if ( self::$js_registration_done ) {
return;
}
$hook = is_admin() ? 'admin_footer' : 'wp_footer';
add_action( $hook, array( 'CMB2_JS', 'enqueue' ), 8 );
self::$js_registration_done = true;
}
/**
* Registers scripts and styles for CMB2
* @since 1.0.0
*/
public static function register_scripts() {
self::register_styles();
self::register_js();
}
/**
* Enqueues scripts and styles for CMB2
* @since 1.0.0
*/
public function do_scripts( $hook ) {
// only enqueue our scripts/styles on the proper pages
if ( in_array( $hook, array( 'post.php', 'post-new.php', 'page-new.php', 'page.php', 'comment.php' ), true ) ) {
if ( $this->cmb->prop( 'cmb_styles' ) ) {
self::enqueue_cmb_css();
}
if ( $this->cmb->prop( 'enqueue_js' ) ) {
self::enqueue_cmb_js();
}
}
}
/**
* Add metaboxes (to 'post' or 'comment' object types)
* @since 1.0.0
*/
public function add_metaboxes() {
if ( ! $this->show_on() ) {
return;
}
foreach ( $this->cmb->prop( 'object_types' ) as $post_type ) {
/**
* To keep from registering an actual post-screen metabox,
* omit the 'title' attribute from the metabox registration array.
*
* (WordPress will not display metaboxes without titles anyway)
*
* This is a good solution if you want to output your metaboxes
* Somewhere else in the post-screen
*/
if ( $this->cmb->prop( 'title' ) ) {
if ( $this->cmb->prop( 'closed' ) ) {
add_filter( "postbox_classes_{$post_type}_{$this->cmb->cmb_id}", array( $this, 'close_metabox_class' ) );
}
add_meta_box( $this->cmb->cmb_id, $this->cmb->prop( 'title' ), array( $this, 'metabox_callback' ), $post_type, $this->cmb->prop( 'context' ), $this->cmb->prop( 'priority' ) );
}
}
}
/**
* Add 'closed' class to metabox
* @since 2.0.0
* @param array $classes Array of classes
* @return array Modified array of classes
*/
public function close_metabox_class( $classes ) {
$classes[] = 'closed';
return $classes;
}
/**
* Display metaboxes for a post or comment object
* @since 1.0.0
*/
public function metabox_callback() {
$object_id = 'comment' == $this->object_type ? get_comment_ID() : get_the_ID();
$this->cmb->show_form( $object_id, $this->object_type );
}
/**
* Display metaboxes for new user page
* @since 1.0.0
*/
public function user_new_metabox( $section ) {
if ( $section == $this->cmb->prop( 'new_user_section' ) ) {
$object_id = $this->cmb->object_id();
$this->cmb->object_id( isset( $_REQUEST['user_id'] ) ? $_REQUEST['user_id'] : $object_id );
$this->user_metabox();
}
}
/**
* Display metaboxes for a user object
* @since 1.0.0
*/
public function user_metabox() {
if ( 'user' != $this->cmb->mb_object_type() ) {
return;
}
if ( ! $this->show_on() ) {
return;
}
if ( $this->cmb->prop( 'cmb_styles' ) ) {
self::enqueue_cmb_css();
}
if ( $this->cmb->prop( 'enqueue_js' ) ) {
self::enqueue_cmb_js();
}
$this->cmb->show_form( 0, 'user' );
}
/**
* Determines if metabox should be shown in current context
* @since 2.0.0
* @return bool Whether metabox should be added/shown
*/
public function show_on() {
// If metabox is requesting to be conditionally shown
$show = $this->cmb->should_show();
/**
* Filter to determine if metabox should show. Default is true
*
* @param array $show Default is true, show the metabox
* @param mixed $meta_box_args Array of the metabox arguments
* @param mixed $cmb The CMB2 instance
*/
$show = (bool) apply_filters( 'cmb2_show_on', $show, $this->cmb->meta_box, $this->cmb );
return $show;
}
/**
* Save data from post metabox
* @since 1.0.0
* @param int $post_id Post ID
* @param mixed $post Post object
* @return null
*/
public function save_post( $post_id, $post = false ) {
$post_type = $post ? $post->post_type : get_post_type( $post_id );
$do_not_pass_go = (
! $this->can_save( $post_type )
// check user editing permissions
|| ( 'page' == $post_type && ! current_user_can( 'edit_page', $post_id ) )
|| ! current_user_can( 'edit_post', $post_id )
);
if ( $do_not_pass_go ) {
// do not collect $200
return;
}
// take a trip to reading railroad – if you pass go collect $200
$this->cmb->save_fields( $post_id, 'post', $_POST );
}
/**
* Save data from comment metabox
* @since 2.0.9
* @param int $comment_id Comment ID
* @return null
*/
public function save_comment( $comment_id ) {
$can_edit = current_user_can( 'moderate_comments', $comment_id );
if ( $this->can_save( get_comment_type( $comment_id ) ) && $can_edit ) {
$this->cmb->save_fields( $comment_id, 'comment', $_POST );
}
}
/**
* Save data from user fields
* @since 1.0.x
* @param int $user_id User ID
* @return null
*/
public function save_user( $user_id ) {
// check permissions
if ( $this->can_save( 'user' ) ) {
$this->cmb->save_fields( $user_id, 'user', $_POST );
}
}
/**
* Determines if the current object is able to be saved
* @since 2.0.9
* @param string $type Current post_type or comment_type
* @return bool Whether object can be saved
*/
public function can_save( $type = '' ) {
return (
$this->cmb->prop( 'save_fields' )
// check nonce
&& isset( $_POST[ $this->cmb->nonce() ] )
&& wp_verify_nonce( $_POST[ $this->cmb->nonce() ], $this->cmb->nonce() )
// check if autosave
&& ! ( defined( 'DOING_AUTOSAVE' ) && DOING_AUTOSAVE )
// get the metabox types & compare it to this type
&& ( $type && in_array( $type, $this->cmb->prop( 'object_types' ) ) )
);
}
/**
* Ensures WordPress hook only gets fired once
* @since 2.0.0
* @param string $action The name of the filter to hook the $hook callback to.
* @param callback $hook The callback to be run when the filter is applied.
* @param integer $priority Order the functions are executed
* @param int $accepted_args The number of arguments the function accepts.
*/
public function once( $action, $hook, $priority = 10, $accepted_args = 1 ) {
$key = md5( serialize( func_get_args() ) );
if ( in_array( $key, self::$hooks_completed ) ) {
return;
}
self::$hooks_completed[] = $key;
add_filter( $action, $hook, $priority, $accepted_args );
}
/**
* Includes CMB2 styles
* @since 2.0.0
*/
public static function enqueue_cmb_css() {
if ( ! apply_filters( 'cmb2_enqueue_css', true ) ) {
return false;
}
self::register_styles();
return wp_enqueue_style( 'cmb2-styles' );
}
/**
* Includes CMB2 JS
* @since 2.0.0
*/
public static function enqueue_cmb_js() {
if ( ! apply_filters( 'cmb2_enqueue_js', true ) ) {
return false;
}
self::register_js();
return true;
}
}