After [32258], restore the parts of [31620] and [31626] that weren't changes to the UI, but were improvements to existing code.

* Use `wp.shortcode()` instead of manually constructing a shortcode in `views/embed/link`
* In `WP_Embed`, store the last URL and last set of attributes requested in class properties
* `wp_ajax_parse_embed()`, allow `[embed]`s to have attributes. Return `attr` in the response.

See #31139.

Built from https://develop.svn.wordpress.org/trunk@32330


git-svn-id: http://core.svn.wordpress.org/trunk@32301 1a063a9b-81f0-0310-95a4-ce76da25c4cd

wp-admin/includes/ajax-actions.php

@@ -2714,14 +2714,23 @@ function wp_ajax_parse_embed() {
 	}
 
 	$shortcode = wp_unslash( $_POST['shortcode'] );
-	$url = str_replace( '[embed]', '', str_replace( '[/embed]', '', $shortcode ) );
+
+	preg_match( '/' . get_shortcode_regex() . '/s', $shortcode, $matches );
+	$atts = shortcode_parse_atts( $matches[3] );
+	if ( ! empty( $matches[5] ) ) {
+		$url = $matches[5];
+	} elseif ( ! empty( $atts['src'] ) ) {
+		$url = $atts['src'];
+	} else {
+		$url = '';
+	}
 
 	$parsed = false;
 	setup_postdata( $post );
 
 	$wp_embed->return_false_on_fail = true;
 
-	if ( is_ssl() && preg_match( '%^\\[embed[^\\]]*\\]http://%i', $shortcode ) ) {
+	if ( is_ssl() && 0 === strpos( $url, 'http://' ) ) {
 		// Admin is ssl and the user pasted non-ssl URL.
 		// Check if the provider supports ssl embeds and use that for the preview.
 		$ssl_shortcode = preg_replace( '%^(\\[embed[^\\]]*\\])http://%i', '$1https://', $shortcode );
@@ -2732,7 +2741,7 @@ function wp_ajax_parse_embed() {
 		}
 	}
 
-	if ( ! $parsed ) {
+	if ( $url && ! $parsed ) {
 		$parsed = $wp_embed->run_shortcode( $shortcode );
 	}
 
@@ -2774,7 +2783,8 @@ function wp_ajax_parse_embed() {
 	}
 
 	wp_send_json_success( array(
-		'body' => $parsed
+		'body' => $parsed,
+		'attr' => $wp_embed->last_attr
 	) );
 }
 

wp-includes/class-wp-embed.php

@@ -11,6 +11,8 @@ class WP_Embed {
 	public $post_ID;
 	public $usecache = true;
 	public $linkifunknown = true;
+	public $last_attr = array();
+	public $last_url = '';
 
 	/**
 	 * When an URL cannot be embedded, return false instead of returning a link
@@ -134,13 +136,18 @@ class WP_Embed {
 			$url = $attr['src'];
 		}
 
+		$this->last_url = $url;
 
-		if ( empty( $url ) )
+		if ( empty( $url ) ) {
+			$this->last_attr = $attr;
 			return '';
+		}
 
 		$rawattr = $attr;
 		$attr = wp_parse_args( $attr, wp_embed_defaults( $url ) );
 
+		$this->last_attr = $attr;
+
 		// kses converts & into & and we need to undo this
 		// See https://core.trac.wordpress.org/ticket/11311
 		$url = str_replace( '&', '&', $url );

wp-includes/js/media-views.js

@@ -4554,15 +4554,23 @@ EmbedLink = wp.media.view.Settings.extend({
 	}, 600 ),
 
 	fetch: function() {
+		var embed;
+
 		// check if they haven't typed in 500 ms
 		if ( $('#embed-url-field').val() !== this.model.get('url') ) {
 			return;
 		}
 
+		embed = new wp.shortcode({
+			tag: 'embed',
+			attrs: _.pick( this.model.attributes, [ 'width', 'height', 'src' ] ),
+			content: this.model.get('url')
+		});
+
 		wp.ajax.send( 'parse-embed', {
 			data : {
 				post_ID: wp.media.view.settings.post.id,
-				shortcode: '[embed]' + this.model.get('url') + '[/embed]'
+				shortcode: embed.string()
 			}
 		} )
 			.done( _.bind( this.renderoEmbed, this ) )

wp-includes/version.php

@@ -4,7 +4,7 @@
  *
  * @global string $wp_version
  */
-$wp_version = '4.3-alpha-32329';
+$wp_version = '4.3-alpha-32330';
 
 /**
  * Holds the WordPress DB revision, increments when changes are made to the WordPress DB schema.