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<?php

// File Security Check
if ( ! defined( 'ABSPATH' ) ) { exit; }

/**
 * Shortcode map class.
 * Inspired by https://www.wprecipes.com/wordpress-shortcode-to-easily-integrate-a-google-map-on-your-blog
 */
class DT_Shortcode_Map extends DT_Shortcode {

	static protected $instance;

	protected $shortcode_name = 'dt_map';
	protected $plugin_name = 'dt_mce_plugin_shortcode_map';

	public static function get_instance() {
		if ( !self::$instance ) {
			self::$instance = new DT_Shortcode_Map();
		}
		return self::$instance;
	}

	protected function __construct() {
		add_shortcode( $this->shortcode_name, array($this, 'shortcode') );
	}

	public function shortcode( $atts, $content = null ) {
		$shortcode_atts = shortcode_atts( [
			'fullwidth'     => 'true',
			'height'        => '500',
			'src'           => '',
			'margin_top'    => '0',
			'margin_bottom' => '0'
		], $atts, $this->shortcode_name );
		extract($shortcode_atts );

		$fullwidth = apply_filters( 'dt_sanitize_flag', $fullwidth );
		$margin_top = intval( $margin_top );
		$margin_bottom = intval( $margin_bottom );
		$height = absint( $height );

		$height = $height ? $height : 500;
		if ( !$src && !$content ) {
			return '';
		}

		$classes = array( 'map-container' );
		if ( $fullwidth ) {
			$classes[] = 'full';
		}

		$style = array(
			'margin-top: ' . $margin_top . 'px',
			'margin-bottom: ' . $margin_bottom . 'px'
		);

		$style = implode( ';', $style );
		$classes = implode( ' ', $classes );

		if ( !$src && $content ) {

			if ( preg_match('/iframe/', $content ) ) {
				$content = str_replace( array('&#8221;', '&#8243;'), '"', $content );
				preg_match( '/src=(["\'])(.*?)\1/', wp_specialchars_decode( $content ), $match );

				if ( !empty($match[2]) ) {
					$src = $match[2];
				} else {
					return '';
				}
			} else {
				$src = $content;
			}
		}

		$src = add_query_arg('output', 'embed', remove_query_arg('output', $src));

		$output = '<div class="' . esc_attr( $classes ) . '" style="' . esc_attr( $style ) . '"><iframe src="' . esc_url( $src ) . '" frameborder="0" marginwidth="0" marginheight="0" scrolling="no" width="500" height="' . $height . '"></iframe></div>';

		return $output;
	}

}

// create shortcode
DT_Shortcode_Map::get_instance();