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<?php |
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/** |
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* UIX Metaboxes |
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* |
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* @package ui |
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* @author David Cramer |
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* @license GPL-2.0+ |
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* @link |
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* @copyright 2016 David Cramer |
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*/ |
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namespace uix\ui; |
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/** |
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* Metabox class for adding metaboxes to post types in the post editor |
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* |
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* @package uix\ui |
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* @author David Cramer |
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*/ |
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class metabox extends panel { |
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/** |
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* The type of object |
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* |
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* @since 1.0.0 |
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* @access public |
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* @var string |
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*/ |
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public $type = 'metabox'; |
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/** |
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* Holds the current post object |
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* |
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* @since 1.0.0 |
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* @access public |
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* @var WP_Post |
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*/ |
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public $post = null; |
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/** |
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* Status of the metabox to determin if assets should be loaded |
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* |
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* @since 1.0.0 |
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* @access public |
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* @var bool |
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*/ |
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public $is_active = false; |
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/** |
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* Setup submission data |
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* |
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* @since 1.0.0 |
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* @access public |
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*/ |
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public function setup() { |
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// do parent. |
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parent::setup(); |
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if ( ! isset( $this->struct['screen'] ) ) { |
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$this->struct['screen'] = ( $this->parent ? $this->parent->slug : null ); |
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} |
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} |
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/** |
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* set metabox styles |
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* |
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* @since 1.0.0 |
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* @see \uix\ui\uix |
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* @access public |
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*/ |
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public function set_assets() { |
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$this->assets['style']['metabox'] = $this->url . 'assets/css/metabox' . UIX_ASSET_DEBUG . '.css'; |
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$this->assets['script']['baldrick'] = [ |
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'src' => $this->url . 'assets/js/jquery.baldrick' . UIX_ASSET_DEBUG . '.js', |
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'deps' => [ 'jquery' ], |
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]; |
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parent::set_assets(); |
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} |
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/** |
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* Checks the screen object to determin if the metabox should load assets |
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* |
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* @since 1.0.0 |
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* @access public |
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* @uses "current_screen" hook |
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* |
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* @param screen $screen The current screen object; |
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*/ |
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public function set_active_status( $screen ) { |
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if ( 'post' == $screen->base && ( null === $this->struct['screen'] || in_array( $screen->id, (array) $this->struct['screen'] ) ) ) { |
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$this->is_active = true; |
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} |
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} |
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/** |
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* Add metaboxes to screen |
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* |
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* @since 1.0.0 |
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* @access public |
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* @uses "add_meta_boxes" hook |
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*/ |
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public function add_metaboxes() { |
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// metabox defaults. |
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$defaults = [ |
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'context' => 'advanced', |
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'priority' => 'default', |
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]; |
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$metabox = array_merge( $defaults, $this->struct ); |
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add_meta_box( |
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'metabox-' . $this->id(), |
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$metabox['name'], |
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[ $this, 'create_metabox' ], |
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$metabox['screen'], |
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$metabox['context'], |
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$metabox['priority'] |
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); |
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} |
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/** |
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* Get the current post ID. |
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* |
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* @since 3.0.0 |
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* @see \uix\load |
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* @return int|bool the post ID or false if not exit. |
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*/ |
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private function get_post_id() { |
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global $post; |
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$post_id = get_queried_object_id(); |
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if ( empty( $post_id ) && is_object( $post ) ) { |
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if ( isset( $post->ID ) ) { |
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$post_id = $post->ID; |
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} |
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} |
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return $post_id; |
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} |
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/** |
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* Get Data from all controls of this section |
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* |
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* @since 1.0.0 |
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* @see \uix\load |
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* @return array|null Array of sections data structured by the controls or |
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* null if none. |
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*/ |
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public function get_data() { |
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$post_id = $this->get_post_id(); |
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//$this->data = get_post_meta( $post_id, $this->slug, true ); |
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$this->data = [ |
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$this->slug => [], |
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]; |
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if ( ! empty( $this->child ) ) { |
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foreach ( $this->child as $child ) { |
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$this->data[ $this->slug ][ $child->slug ] = get_post_meta( $post_id, $child->slug, true ); |
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} |
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} |
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return $this->data; |
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} |
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/** |
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* Callback for the `add_meta_box` that sets the metabox data and renders it |
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* |
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* @since 1.0.0 |
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* @uses "add_meta_box" function |
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* @access public |
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* |
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* @param wp_post $post Current post for the metabox |
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*/ |
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public function create_metabox( $post ) { |
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$this->post = $post; |
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$data = $this->get_data(); |
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$this->set_data( $data ); |
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echo $this->render(); |
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} |
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/** |
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* Render the Metabox |
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* |
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* @since 1.0.0 |
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* @access public |
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* @return string HTML of rendered metabox |
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*/ |
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public function render() { |
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// render fields setup |
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return parent::render(); |
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} |
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/** |
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* Saves a metabox data |
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* |
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* @uses "save_post" hook |
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* @since 1.0.0 |
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* @access public |
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* |
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* @param int $post_id ID of the current post being saved |
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* @param wp_post $post Current post being saved |
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*/ |
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public function save_meta( $post_id, $post ) { |
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$this->post = $post; |
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$data = [ |
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$this->slug => $this->get_child_data(), |
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]; |
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if ( ! $this->is_active() || empty( $data ) ) { |
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return; |
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} |
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// save compiled data. |
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update_post_meta( $post_id, $this->slug, $data ); |
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$data = call_user_func_array( 'array_merge', $data ); |
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foreach ( $data as $meta_key => $meta_value ) { |
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$this->save_meta_data( $meta_key, $meta_value ); |
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} |
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} |
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/** |
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* Determin which metaboxes are used for the current screen and set them |
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* active |
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* |
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* @since 1.0.0 |
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* @access public |
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*/ |
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public function is_active() { |
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return $this->is_active; |
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} |
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/** |
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* Save the meta data for the post |
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* |
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* @since 1.0.0 |
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* @access private |
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* |
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* @param string $slug slug of the meta_key |
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* @param mixed $data Data to be saved |
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*/ |
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private function save_meta_data( $slug, $data ) { |
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$prev = get_post_meta( $this->post->ID, $slug, true ); |
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if ( null === $data && $prev ) { |
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delete_post_meta( $this->post->ID, $slug ); |
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} elseif ( $data !== $prev ) { |
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update_post_meta( $this->post->ID, $slug, $data ); |
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} |
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} |
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/** |
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* setup actions and hooks to add metaboxes and save metadata |
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* |
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* @since 1.0.0 |
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* @access protected |
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*/ |
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protected function actions() { |
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// run parent to keep init and enqueuing assets |
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parent::actions(); |
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// set screen activation |
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add_action( 'current_screen', [ $this, 'set_active_status' ], 25 ); |
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// add metaboxes |
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add_action( 'add_meta_boxes', [ $this, 'add_metaboxes' ], 25 ); |
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// save metabox |
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add_action( 'save_post', [ $this, 'save_meta' ], 10, 2 ); |
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} |
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/** |
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* Enqueues specific tabs assets for the active pages |
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* |
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* @since 1.0.0 |
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* @access protected |
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*/ |
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protected function set_active_styles() { |
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$style = '#' . $this->id() . '.uix-top-tabs > .uix-panel-tabs > li[aria-selected="true"] a,'; |
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$style .= '#side-sortables #' . $this->id() . ' > .uix-panel-tabs > li[aria-selected="true"] a {'; |
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$style .= 'box-shadow: 0 3px 0 ' . $this->base_color() . ' inset; }'; |
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$style .= '#' . $this->id() . ' > .uix-panel-tabs > li[aria-selected="true"] a {'; |
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$style .= 'box-shadow: 3px 0 0 ' . $this->base_color() . ' inset;}'; |
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$style .= $this->chromeless(); |
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uix_share()->set_active_styles( $style ); |
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} |
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/** |
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* Writes script required to make a metabox `chromeless` |
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* |
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* @since 1.0.0 |
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* @access protected |
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*/ |
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protected function chromeless() { |
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$style = null; |
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if ( ! empty( $this->struct['chromeless'] ) ) { |
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$style .= '#metabox-' . $this->id() . '{background: transparent none repeat scroll 0 0;border: 0 none;'; |
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$style .= 'box-shadow: none;margin: 0 0 20px;padding: 0;}'; |
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$style .= '#metabox-' . $this->id() . ' .handlediv.button-link,'; |
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$style .= '#metabox-' . $this->id() . ' .hndle {display: none;}'; |
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$style .= '#metabox-' . $this->id() . ' > .inside {padding: 0;}'; |
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} |
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return $style; |
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} |
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} |
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Instead of relying on
global
state, we recommend one of these alternatives:1. Pass all data via parameters
2. Create a class that maintains your state