/**
* Get registered meta boxes via a filter.
* Advantages:
* - prevents duplicated global variables.
* - allows users to remove/hide registered meta boxes.
*/
public static function get_meta_boxes()
{
if (null === self::$meta_boxes) {
self::$meta_boxes = apply_filters('swpmb_meta_boxes', array());
self::$meta_boxes = empty(self::$meta_boxes) || !is_array(self::$meta_boxes) ? array() : self::$meta_boxes;
}
return self::$meta_boxes;
}
/**
* Hash all fields into an indexed array for search
* @param string $post_type Post type
*/
public static function hash_fields($post_type)
{
self::$fields[$post_type] = array();
$meta_boxes = SWPMB_Core::get_meta_boxes();
foreach ($meta_boxes as $meta_box) {
$meta_box = SWP_Meta_Box::normalize($meta_box);
if (!in_array($post_type, $meta_box['post_types'])) {
continue;
}
foreach ($meta_box['fields'] as $field) {
if (!empty($field['id'])) {
self::$fields[$post_type][$field['id']] = $field;
}
}
}
}
/**
* Save data from meta box
*
* @param int $post_id Post ID
*/
function save_post($post_id)
{
// Check if this function is called to prevent duplicated calls like revisions, manual hook to wp_insert_post, etc.
if (true === $this->saved) {
return;
}
$this->saved = true;
// Check whether form is submitted properly
$nonce = (string) filter_input(INPUT_POST, "nonce_{$this->meta_box['id']}");
if (!wp_verify_nonce($nonce, "swpmb-save-{$this->meta_box['id']}")) {
return;
}
// Autosave
if (defined('DOING_AUTOSAVE') && !$this->meta_box['autosave']) {
return;
}
// Make sure meta is added to the post, not a revision
if ($the_post = wp_is_post_revision($post_id)) {
$post_id = $the_post;
}
// Before save action
do_action('swpmb_before_save_post', $post_id);
do_action("swpmb_{$this->meta_box['id']}_before_save_post", $post_id);
foreach ($this->fields as $field) {
$name = $field['id'];
$single = $field['clone'] || !$field['multiple'];
$old = get_post_meta($post_id, $name, $single);
$new = isset($_POST[$name]) ? $_POST[$name] : ($single ? '' : array());
// Allow field class change the value
$new = call_user_func(array(self::get_class_name($field), 'value'), $new, $old, $post_id, $field);
$new = SWPMB_Core::filter('value', $new, $field, $old);
// Call defined method to save meta value, if there's no methods, call common one
call_user_func(array(self::get_class_name($field), 'save'), $new, $old, $post_id, $field);
}
// After save action
do_action('swpmb_after_save_post', $post_id);
do_action("swpmb_{$this->meta_box['id']}_after_save_post", $post_id);
}
/**
* Show field HTML
* Filters are put inside this method, not inside methods such as "meta", "html", "begin_html", etc.
* That ensures the returned value are always been applied filters
* This method is not meant to be overwritten in specific fields
*
* @param array $field
* @param bool $saved
*
* @return string
*/
static function show($field, $saved)
{
$post = get_post();
$post_id = isset($post->ID) ? $post->ID : 0;
$field_class = SWP_Meta_Box::get_class_name($field);
$meta = call_user_func(array($field_class, 'meta'), $post_id, $saved, $field);
$meta = SWPMB_Core::filter('field_meta', $meta, $field, $saved);
$begin = call_user_func(array($field_class, 'begin_html'), $meta, $field);
$begin = SWPMB_Core::filter('begin_html', $begin, $field, $meta);
// Separate code for cloneable and non-cloneable fields to make easy to maintain
// Cloneable fields
if ($field['clone']) {
$field_html = '';
/**
* Note: $meta must contain value so that the foreach loop runs!
* @see meta()
*/
foreach ($meta as $index => $sub_meta) {
$sub_field = $field;
$sub_field['field_name'] = $field['field_name'] . "[{$index}]";
if ($index > 0) {
if (isset($sub_field['address_field'])) {
$sub_field['address_field'] = $field['address_field'] . "_{$index}";
}
$sub_field['id'] = $field['id'] . "_{$index}";
}
if ($field['multiple']) {
$sub_field['field_name'] .= '[]';
}
// Wrap field HTML in a div with class="swpmb-clone" if needed
$class = "swpmb-clone swpmb-{$field['type']}-clone";
$sort_icon = '';
if ($field['sort_clone']) {
$class .= ' swpmb-sort-clone';
$sort_icon = "<a href='javascript:;' class='swpmb-clone-icon'></a>";
}
$input_html = "<div class='{$class}'>" . $sort_icon;
// Call separated methods for displaying each type of field
$input_html .= call_user_func(array($field_class, 'html'), $sub_meta, $sub_field);
$input_html = SWPMB_Core::filter('html', $input_html, $sub_field, $sub_meta);
// Remove clone button
$input_html .= call_user_func(array($field_class, 'remove_clone_button'), $sub_field);
$input_html .= '</div>';
$field_html .= $input_html;
}
} else {
// Call separated methods for displaying each type of field
$field_html = call_user_func(array($field_class, 'html'), $meta, $field);
$field_html = SWPMB_Core::filter('html', $field_html, $field, $meta);
}
$end = call_user_func(array($field_class, 'end_html'), $meta, $field);
$end = SWPMB_Core::filter('end_html', $end, $field, $meta);
$html = SWPMB_Core::filter('wrapper_html', "{$begin}{$field_html}{$end}", $field, $meta);
// Display label and input in DIV and allow user-defined classes to be appended
$classes = "swpmb-field swpmb-{$field['type']}-wrapper " . $field['class'];
if ('hidden' === $field['type']) {
$classes .= ' hidden';
}
if (!empty($field['required'])) {
$classes .= ' required';
}
$outer_html = sprintf($field['before'] . '<div class="%s">%s</div>' . $field['after'], trim($classes), $html);
$outer_html = SWPMB_Core::filter('outer_html', $outer_html, $field, $meta);
echo $outer_html;
}