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<?php
/**
* Group field class.
* @package Meta Box
* @subpackage Meta Box Group
*/
/**
* Class for group field.
* @package Meta Box
* @subpackage Meta Box Group
*/
class RWMB_Group_Field extends RWMB_Field {
/**
* Queue to store the group fields' meta(s). Used to get child field meta.
* @var array
*/
protected static $meta_queue = array();
/**
* Add hooks for sub-fields.
*/
public static function add_actions() {
// Group field is the 1st param
$args = func_get_args();
foreach ( $args[0]['fields'] as $field ) {
RWMB_Field::call( $field, 'add_actions' );
}
}
/**
* Enqueue scripts and styles.
*/
public static function admin_enqueue_scripts() {
// Group field is the 1st param
$args = func_get_args();
$fields = $args[0]['fields'];
// Load clone script conditionally
foreach ( $fields as $field ) {
if ( $field['clone'] ) {
wp_enqueue_script( 'rwmb-clone', RWMB_JS_URL . 'clone.js', array( 'jquery-ui-sortable' ), RWMB_VER, true );
break;
}
}
// Enqueue sub-fields scripts and styles.
foreach ( $fields as $field ) {
RWMB_Field::call( $field, 'admin_enqueue_scripts' );
}
// Use helper function to get correct URL to current folder, which can be used in themes/plugins.
list( , $url ) = RWMB_Loader::get_path( dirname( __FILE__ ) );
wp_enqueue_style( 'rwmb-group', $url . 'group.css', '', '1.1.2' );
wp_enqueue_script( 'rwmb-group', $url . 'group.js', array( 'jquery' ), '1.1.2', true );
}
/**
* Get group field HTML.
*
* @param mixed $meta
* @param array $field
*
* @return string
*/
public static function html( $meta, $field ) {
ob_start();
// Add filter to child field meta value, make sure it's added only once
if ( empty( self::$meta_queue ) ) {
add_filter( 'rwmb_field_meta', array( __CLASS__, 'child_field_meta' ), 10, 3 );
}
// Add group value to the queue
array_unshift( self::$meta_queue, $meta );
// Add clone index to make sure each child field has an unique ID.
$clone_index = '';
if ( $field['clone'] && preg_match( '|_\d+$|', $field['id'], $match ) ) {
$clone_index = $match[0];
}
foreach ( $field['fields'] as $child_field ) {
$child_field['field_name'] = self::child_field_name( $field['field_name'], $child_field['field_name'] );
$child_field['attributes']['id'] = ( isset( $child_field['attributes']['id'] ) ? $child_field['attributes']['id'] : $child_field['id'] ) . $clone_index;
// $child_field['attributes']['id'] = self::child_field_id( $field, $child_field, $clone_index );
self::call( 'show', $child_field, RWMB_Group::$saved );
}
// Remove group value from the queue
array_shift( self::$meta_queue );
// Remove filter to child field meta value and reset class's parent field's meta
if ( empty( self::$meta_queue ) ) {
remove_filter( 'rwmb_field_meta', array( __CLASS__, 'child_field_meta' ) );
}
return ob_get_clean();
}
/**
* Change the way we get meta value for child fields
*
* @param mixed $meta Meta value
* @param array $child_field Child field
* @param bool $saved Has the meta box been saved?
*
* @return mixed
*/
public static function child_field_meta( $meta, $child_field, $saved ) {
$group_meta = reset( self::$meta_queue );
$child_id = $child_field['id'];
if ( isset( $group_meta[ $child_id ] ) ) {
$meta = $group_meta[ $child_id ];
}
// Use $field['std'] only when the meta box hasn't been saved (i.e. the first time we run)
$meta = ! $saved && isset( $child_field['std'] ) ? $child_field['std'] : $meta;
// Escape attributes
$meta = self::call( $child_field, 'esc_meta', $meta );
/**
* Make sure meta value is an array for clonable and multiple fields
* @see RWMB_Field::meta()
*/
if ( $child_field['clone'] || $child_field['multiple'] ) {
if ( empty( $meta ) || ! is_array( $meta ) ) {
/**
* Note: if field is clonable, $meta must be an array with values
* so that the foreach loop in self::show() runs properly
* @see RWMB_Field::show()
*/
$meta = $child_field['clone'] ? array( '' ) : array();
}
}
return $meta;
}
/**
* Get meta value, make sure value is an array (of arrays if field is cloneable)
* Don't escape value
*
* @param int $post_id
* @param bool $saved
* @param array $field
*
* @return mixed
*/
public static function meta( $post_id, $saved, $field ) {
$meta = get_post_meta( $post_id, $field['id'], true ); // Always save as single value
// Use $field['std'] only when the meta box hasn't been saved (i.e. the first time we run)
$meta = ! $saved && '' === $meta ? $field['std'] : $meta;
// Make sure returned value is an array
if ( empty( $meta ) ) {
$meta = array();
}
// If cloneable, make sure each sub-value is an array
if ( $field['clone'] ) {
// Make sure there's at least 1 sub-value
if ( empty( $meta ) ) {
$meta[0] = array();
}
foreach ( $meta as $k => $v ) {
$meta[ $k ] = (array) $v;
}
}
return $meta;
}
/**
* Escape meta for field output. Just do nothing for group.
*
* @param array $meta
*
* @return array
*/
public static function esc_meta( $meta ) {
return $meta;
}
/**
* Set value of meta before saving into database
*
* @param mixed $new
* @param mixed $old
* @param int $post_id
* @param array $field
*
* @return array
*/
public static function value( $new, $old, $post_id, $field ) {
$sanitized = array();
foreach ( $new as $key => $value ) {
if ( is_array( $value ) && ! empty( $value ) ) {
$value = self::value( $value, '', '', '' );
}
if ( '' !== $value && array() !== $value ) {
if ( is_int( $key ) ) {
$sanitized[] = $value;
} else {
$sanitized[ $key ] = $value;
}
}
}
return $sanitized;
}
/**
* Normalize group fields.
*
* @param array $field
*
* @return array
*/
public static function normalize( $field ) {
$field = parent::normalize( $field );
$field['fields'] = RW_Meta_Box::normalize_fields( $field['fields'] );
return $field;
}
/**
* Change child field name from 'child' to 'parent[child]'
*
* @param string $parent Parent field's name
* @param string $child Child field's name
*
* @return string
*/
protected static function child_field_name( $parent, $child ) {
$pos = strpos( $child, '[' );
$pos = false === $pos ? strlen( $child ) : $pos;
$name = $parent . '[' . substr( $child, 0, $pos ) . ']' . substr( $child, $pos );
return $name;
}
/**
* Change child field attribute id to from 'id' to 'parent_id'
*
* @param array $parent Parent field
* @param array $child Child field
* @param int $clone_index Parent clone index
*
* @return string
*/
protected static function child_field_id( $parent, $child, $clone_index ) {
$parent = isset( $parent['attributes']['id'] ) ? $parent['attributes']['id'] : $parent['id'];
$child = isset( $child['attributes']['id'] ) ? $child['attributes']['id'] : $child['id'];
return $clone_index ? "{$parent}{$clone_index}_{$child}" : "{$parent}_{$child}";
}
}
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