Ticket #28350: 28350.patch

wp-admin/includes/post.php

@@ -1179 +1179 @@
 
         if ( current_user_can( 'read_post', $post->ID ) ) {
                 $ptype = get_post_type_object( $post->post_type );
-                $view_post = $ptype->labels->view_item;
+                if( 'draft' == $post->post_status ) {
+                        $view_post = __( 'Preview' );
+                } else {
+                        $view_post = $ptype->labels->view_item;
+                }
         }
 
         if ( 'publish' == get_post_status( $post ) ) {
@@ -1234 +1238 @@
         $return .= '<span id="editable-post-name-full">' . $post_name . "</span>\n";
 
         if ( isset( $view_post ) ) {
-                $return .= "<span id='view-post-btn'><a href='" . get_permalink( $post ) . "' class='button button-small'>$view_post</a></span>\n";
+
+                if( 'draft' == $post->post_status ) {
+                        $preview_link = set_url_scheme( get_permalink( $post->ID ) );
+                        /**
+                         * Filter the URI of a post preview in the post submit box.
+                         *
+                         * @since 2.0.5
+                         *
+                         * @param string $preview_link URI the user will be directed to for a post preview.
+                         */
+                        $preview_link = esc_url( apply_filters( 'preview_post_link', add_query_arg( 'preview', 'true', $preview_link ) ) );
+                        $return .= "<span id='view-post-btn'><a href='" . $preview_link . "' class='button button-small' target='_blank'>$view_post</a></span>\n";
+                } else {
+                        $return .= "<span id='view-post-btn'><a href='" . get_permalink( $post ) . "' class='button button-small'>$view_post</a></span>\n";
+                }
         }
 
         /** This filter is documented in wp-admin/includes/post.php */