Ticket #26399: 26399-2.diff

wp-admin/css/common.css

@@ -1805 +1805 @@
 .metabox-holder .postbox-container .empty-container {
         border: 3px dashed #b4b9be;
         height: 250px;
+        position: relative;
+}
+
+.metabox-holder .postbox-container .empty-container:after {
+        content: attr(data-emptystring);
+        margin: auto;
+        position: absolute;
+        top: 0;
+        left: 0;
+        bottom: 0;
+        right: 0;
+        height: 1em;
+        width: 200px;
+        text-align: center;
+        color: #ccc;
+        font-size:18px;
 }
 
 .metabox-holder.columns-1 .postbox-container .empty-container,

wp-admin/js/postbox.js

@@ -177 +177 @@
                         $( '#dashboard-widgets .meta-box-sortables:visible' ).each( function() {
                                 var t = $(this);
 
-                                if ( visible == 1 || t.children('.postbox:visible').length )
+                                if ( visible == 1 || t.children('.postbox:visible').length ) {
                                         t.removeClass('empty-container');
-                                else
+                                }
+                                else {
                                         t.addClass('empty-container');
+                                        t.attr('data-emptyString', postBoxL10n.postBoxEmptyString);
+                                }
                         });
 
                         if ( side.length ) {

wp-includes/script-loader.php

@@ -492 +492 @@
                 $scripts->add( 'xfn', "/wp-admin/js/xfn$suffix.js", array('jquery'), false, 1 );
 
                 $scripts->add( 'postbox', "/wp-admin/js/postbox$suffix.js", array('jquery-ui-sortable'), false, 1 );
+                did_action( 'init' ) && $scripts->localize( 'postbox', 'postBoxL10n', array(
+                        'postBoxEmptyString' => __( 'Drag panels here' ),
+                ) );
 
                 $scripts->add( 'tags-box', "/wp-admin/js/tags-box$suffix.js", array( 'jquery', 'suggest' ), false, 1 );
                 did_action( 'init' ) && $scripts->localize( 'tags-box', 'tagsBoxL10n', array(