Pyrometric / UIX

classes/uix/ui/metabox.php

<?php
/**
 * UIX Metaboxes
 *
 * @package   ui
 * @author    David Cramer
 * @license   GPL-2.0+
 * @link
 * @copyright 2016 David Cramer
 */
namespace uix\ui;

/**
 * Metabox class for adding metaboxes to post types in the post editor
 * @package uix\ui
 * @author  David Cramer
 */
class metabox extends panel {

	/**
	 * The type of object
	 *
	 * @since 1.0.0
	 * @access public
	 * @var      string
	 */
	public $type = 'metabox';

	/**
	 * Holds the current post object
	 *
	 * @since 1.0.0
	 * @access public
	 * @var      WP_Post
	 */
	public $post = null;

	/**
	 * Status of the metabox to determin if assets should be loaded
	 *
	 * @since 1.0.0
	 * @access public
	 * @var      bool
	 */
	public $is_active = false;

	/**
	 * Setup submission data
	 *
	 * @since 1.0.0
	 * @access public
	 */
	public function setup() {
		// do parent
		parent::setup();
		if ( ! isset( $this->struct['screen'] ) ) {
			$this->struct['screen'] = ( $this->parent ? $this->parent->slug : null );
		}
	}

	/**
	 * set metabox styles
	 *
	 * @since 1.0.0
	 * @see \uix\ui\uix
	 * @access public
	 */
	public function set_assets() {

This method seems to be duplicated in your project.

		$this->assets['style']['metabox'] = $this->url . 'assets/css/metabox' . UIX_ASSET_DEBUG . '.css';
		$this->assets['script']['baldrick'] = array(
			'src'  => $this->url . 'assets/js/jquery.baldrick' . UIX_ASSET_DEBUG . '.js',
			'deps' => array( 'jquery' ),
		);
		parent::set_assets();
	}

	/**
	 * Checks the screen object to determin if the metabox should load assets
	 *
	 * @since 1.0.0
	 * @access public
	 * @uses "current_screen" hook
	 *
	 * @param screen $screen The current screen object;
	 */
	public function set_active_status( $screen ) {

		if ( 'post' == $screen->base && ( null === $this->struct['screen'] || in_array( $screen->id, (array) $this->struct['screen'] ) ) ) {
			$this->is_active = true;
		}

	}

	/**
	 * Add metaboxes to screen
	 *
	 * @since 1.0.0
	 * @access public
	 * @uses "add_meta_boxes" hook
	 */
	public function add_metaboxes() {

		// metabox defaults
		$defaults = array(
			'context'  => 'advanced',
			'priority' => 'default',
		);

		$metabox = array_merge( $defaults, $this->struct );

		add_meta_box(
			'metabox-' . $this->id(),
			$metabox['name'],
			array( $this, 'create_metabox' ),
			$metabox['screen'],
			$metabox['context'],
			$metabox['priority']
		);

	}

	/**
	 * Callback for the `add_meta_box` that sets the metabox data and renders it
	 *
	 * @since 1.0.0
	 * @uses "add_meta_box" function
	 * @access public
	 *
	 * @param wp_post $post Current post for the metabox
	 */
	public function create_metabox( $post ) {

		$this->post = $post;
		$data     = array(
			$this->slug => array(),
		);
		foreach ( (array) $this->child as $child ) {
			$data[ $this->slug ][ $child->slug ] = get_post_meta( $post->ID, $child->slug, true );
		}
		$this->set_data( $data );
		echo $this->render();

	}

	/**
	 * Render the Metabox
	 *
	 * @since 1.0.0
	 * @access public
	 * @return string HTML of rendered metabox
	 */
	public function render() {
		// render fields setup
		return parent::render();
	}

	/**
	 * Saves a metabox data
	 *
	 * @uses "save_post" hook
	 * @since 1.0.0
	 * @access public
	 *
	 * @param int $post_id ID of the current post being saved
	 * @param wp_post $post Current post being saved
	 */
	public function save_meta( $post_id, $post ) {

		$this->post = $post;
		$data       = $this->get_data();

		if ( ! $this->is_active() || empty( $data ) ) {
			return;
		}

		// save compiled data
		update_post_meta( $post_id, $this->slug, $data );
		$data = call_user_func_array( 'array_merge', $data );

		foreach ( $data as $meta_key => $meta_value ) {

			$this->save_meta_data( $meta_key, $meta_value );
		}

	}

	/**
	 * Determin which metaboxes are used for the current screen and set them active
	 * @since 1.0.0
	 * @access public
	 */
	public function is_active() {
		return $this->is_active;
	}

	/**
	 * Save the meta data for the post
	 *
	 * @since 1.0.0
	 * @access private
	 *
	 * @param string $slug slug of the meta_key
	 * @param mixed $data Data to be saved
	 */
	private function save_meta_data( $slug, $data ) {

		$prev = get_post_meta( $this->post->ID, $slug, true );

		if ( null === $data && $prev ) {
			delete_post_meta( $this->post->ID, $slug );
		} elseif ( $data !== $prev ) {
			update_post_meta( $this->post->ID, $slug, $data );
		}

	}

	/**
	 * setup actions and hooks to add metaboxes and save metadata
	 *
	 * @since 1.0.0
	 * @access protected
	 */
	protected function actions() {

		// run parent to keep init and enqueuing assets
		parent::actions();
		// set screen activation
		add_action( 'current_screen', array( $this, 'set_active_status' ), 25 );
		// add metaboxes
		add_action( 'add_meta_boxes', array( $this, 'add_metaboxes' ), 25 );
		// save metabox
		add_action( 'save_post', array( $this, 'save_meta' ), 10, 2 );

	}

	/**
	 * Enqueues specific tabs assets for the active pages
	 *
	 * @since 1.0.0
	 * @access protected
	 */
	protected function set_active_styles() {

		$style = '#' . $this->id() . '.uix-top-tabs > .uix-panel-tabs > li[aria-selected="true"] a,';
		$style .= '#side-sortables #' . $this->id() . ' > .uix-panel-tabs > li[aria-selected="true"] a {';
		$style .= 'box-shadow: 0 3px 0 ' . $this->base_color() . ' inset; }';

		$style .= '#' . $this->id() . ' > .uix-panel-tabs > li[aria-selected="true"] a {';
		$style .= 'box-shadow: 3px 0 0 ' . $this->base_color() . ' inset;}';

		$style .= $this->chromeless();

		uix_share()->set_active_styles( $style );

	}

	/**
	 * Writes script required to make a metabox `chromeless`
	 *
	 * @since 1.0.0
	 * @access protected
	 */
	protected function chromeless() {
		$style = null;
		if ( ! empty( $this->struct['chromeless'] ) ) {
			$style .= '#metabox-' . $this->id() . '{background: transparent none repeat scroll 0 0;border: 0 none;';
			$style .= 'box-shadow: none;margin: 0 0 20px;padding: 0;}';
			$style .= '#metabox-' . $this->id() . ' .handlediv.button-link,';
			$style .= '#metabox-' . $this->id() . ' .hndle {display: none;}';
			$style .= '#metabox-' . $this->id() . ' > .inside {padding: 0;}';
		}
		return $style;
	}

}