diff --git a/src/wp-includes/class-wp-editor.php b/src/wp-includes/class-wp-editor.php
index 7da0c55c21..264469d1cb 100644
--- a/src/wp-includes/class-wp-editor.php
+++ b/src/wp-includes/class-wp-editor.php
@@ -811,15 +811,28 @@ final class _WP_Editors {
 					}
 				}
 			}
-		}());
 
+			if ( typeof jQuery !== 'undefined' ) {
+				jQuery('.wp-editor-wrap').on( 'click.wp-editor', function() {
+					if ( this.id ) {
+						window.wpActiveEditor = this.id.slice( 3, -5 );
+					}
+				});
+			} else {
+				for ( qtId in tinyMCEPreInit.qtInit ) {
+					document.getElementById( 'wp-' + qtId + '-wrap' ).onclick = function() {
+						window.wpActiveEditor = this.id.slice( 3, -5 );
+					}
+				}
+			}
+		}());
 		</script>
 		<?php
 
-		if ( in_array('wplink', self::$plugins, true) || in_array('link', self::$qt_buttons, true) )
+		if ( in_array( 'wplink', self::$plugins, true ) || in_array( 'link', self::$qt_buttons, true ) )
 			self::wp_link_dialog();
 
-		if ( in_array('wpfullscreen', self::$plugins, true) || in_array('fullscreen', self::$qt_buttons, true) )
+		if ( in_array( 'wpfullscreen', self::$plugins, true ) || in_array( 'fullscreen', self::$qt_buttons, true ) )
 			self::wp_fullscreen_html();
 
 		do_action( 'after_wp_tiny_mce', self::$mce_settings );