Ticket #52133: 52133.diff

src/wp-includes/class-wp-editor.php

@@ -1663 +1663 @@
                 ?>
 
                 ( function() {
-                        var init, id, $wrap;
+                        var initialize = function() {
+                                var init, id, inPostbox, $wrap;
+                                var readyState = document.readyState;
 
-                        if ( typeof tinymce !== 'undefined' ) {
-                                if ( tinymce.Env.ie && tinymce.Env.ie < 11 ) {
-                                        tinymce.$( '.wp-editor-wrap ' ).removeClass( 'tmce-active' ).addClass( 'html-active' );
+                                if ( readyState !== 'complete' && readyState !== 'interactive' ) {
                                         return;
                                 }
 
                                 for ( id in tinyMCEPreInit.mceInit ) {
-                                        init = tinyMCEPreInit.mceInit[id];
-                                        $wrap = tinymce.$( '#wp-' + id + '-wrap' );
+                                        init      = tinyMCEPreInit.mceInit[id];
+                                        $wrap     = tinymce.$( '#wp-' + id + '-wrap' );
+                                        inPostbox = $wrap.parents( '.postbox' ).length > 0;
 
-                                        if ( ( $wrap.hasClass( 'tmce-active' ) || ! tinyMCEPreInit.qtInit.hasOwnProperty( id ) ) && ! init.wp_skip_init ) {
+                                        if (
+                                                ! init.wp_skip_init &&
+                                                ( $wrap.hasClass( 'tmce-active' ) || ! tinyMCEPreInit.qtInit.hasOwnProperty( id ) ) &&
+                                                (
+                                                        ( ! inPostbox && ( readyState === 'interactive' || readyState === 'complete' ) ) ||
+                                                        ( inPostbox && readyState === 'complete' )
+                                                )
+                                        ) {
                                                 tinymce.init( init );
 
                                                 if ( ! window.wpActiveEditor ) {
@@ -1685 +1693 @@
                                 }
                         }
 
+                        if ( typeof tinymce !== 'undefined' ) {
+                                if ( tinymce.Env.ie && tinymce.Env.ie < 11 ) {
+                                        tinymce.$( '.wp-editor-wrap ' ).removeClass( 'tmce-active' ).addClass( 'html-active' );
+                                } else {
+                                        if ( document.readyState === 'complete' ) {
+                                                initialize();
+                                        } else {
+                                                document.addEventListener( 'readystatechange', initialize );
+                                        }
+                                }
+                        }
+
                         if ( typeof quicktags !== 'undefined' ) {
                                 for ( id in tinyMCEPreInit.qtInit ) {
                                         quicktags( tinyMCEPreInit.qtInit[id] );