cmb2-markdown.php

<?php

/**
 *
 * This file is read by WordPress to generate the plugin information in the plugin
 * admin area. This file also includes all of the dependencies used by the plugin,
 * registers the activation and deactivation functions, and defines a function
 * that starts the plugin.
 *
 * @link              http://ryanmckenna.io/
 * @since             1.0.1
 * @package           CMB2_Markdown
 *
 * @wordpress-plugin
 * Plugin Name:       CMB2 Markdown
 * Plugin URI:        https://github.com/Rekenna/cmb2-markdown
 * Description:       Adds a Markdown enabled textarea with a live preview to the available CMB2 fields.
 * Version:           1.0.1
 * Author:            Ryan McKenna
 * Author URI:        http://ryanmckenna.io/
 * License:           GPL-2.0+
 * License URI:       http://www.gnu.org/licenses/gpl-2.0.txt
 * Text Domain:       cmb2-markdown
 * Domain Path:       /languages
 */

// If this file is called directly, abort.
if ( ! defined( 'WPINC' ) ) {
	die;
}

define( 'CMB2_MARKDOWN', '1.0.1' );

/**
 * Begins execution of the plugin.
 *
 * Since everything within the plugin is registered via hooks,
 * then kicking off the plugin from this point in the file does
 * not affect the page life cycle.
 *
 * @since    1.0.1
 */

function cmb2_render_callback_for_text_markdown( $field, $escaped_value, $object_id, $object_type, $field_type_object ) {
	if ( ! is_admin() ) {
		cmb2_markdown_enqueue_script();
	}
	?>
	<div class="cmb2-markdown">
		<ul class="cmb2-markdown-actions">
			<li class="cheatsheet"><a href="https://github.com/adam-p/markdown-here/wiki/Markdown-Here-Cheatsheet" target="_blank">Markdown Cheatsheet</a></li>
			<li class="toggle-preview">Toggle Preview</li>
			<li class="convert-html">Convert to HTML</li>
		</ul>
		<div class="markdown-textarea">
			<?php echo $field_type_object->textarea( array() ); ?>
		</div>
		<article id="markdown-result" class="markdown-result"></article>
	</div>
	<?php
	wp_enqueue_script( 'cmb2_markdown_script' );
}
add_action( 'cmb2_render_text_markdown', 'cmb2_render_callback_for_text_markdown', 10, 5 );

function markdown_sanitize( $value, $field_args, $field ) {
	return $value;
}

//
// Example
//

// $cmb2->add_field( array(
//  	'name' => 'CMB2 Markdown',
//  	'id'      => 'cmb2_markdown',
//  	'type'       => 'text_markdown',
//		'sanitization_cb' => 'markdown_sanitize'
//  ));

//
// Scripts
//
function cmb2_markdown_enqueue_script() {
	wp_enqueue_style( 'cmb2_markdown_css',  plugin_dir_url( __FILE__ ) . 'assets/cmb2-markdown.css', false, '1.0.0' );
	wp_register_script( 'cmb2_markdown_script', plugin_dir_url( __FILE__ ) . 'assets/cmb2-markdown.js' );
}
add_action( 'admin_enqueue_scripts', 'cmb2_markdown_enqueue_script' );