Ticket #7519: 7519.2.diff

wp-admin/update.php

@@ -102 +102 @@
                 return;
         }
 
-        //TODO: Is theme currently active?
-        $was_current = false; //is_plugin_active($plugin); //Check now, It'll be deactivated by the next line if it is
+        //Is the current theme active? If so, Put the blog into maintainence mode before update.
+        $was_current = strtolower(get_current_theme()) == strtolower($theme);
 
+        if ( $was_current ) {
+                show_message( __('Blog has been put into maintainence mode for duration of theme update') );
+                // Create maintenance file to signal that we are upgrading
+                $maintenance_string = '<?php $upgrading = ' . time() . '; ?>';
+                $maintenance_file = $wp_filesystem->abspath() . '.maintenance';
+                $wp_filesystem->delete($maintenance_file);
+                $wp_filesystem->put_contents($maintenance_file, $maintenance_string, 0644);
+        }
+
         $result = wp_update_theme($theme, 'show_message');
 
+        if ( $was_current ) {
+                // Remove maintenance file, we're done.
+                $wp_filesystem->delete($maintenance_file);
+        }
+
         if ( is_wp_error($result) ) {
                 show_message($result);
                 show_message( __('Installation Failed') );
         } else {
-                //Result is the new plugin file relative to WP_PLUGIN_DIR
                 show_message( __('Theme upgraded successfully') );
-                if( $result && $was_current ){
-                        show_message(__('Setting theme as Current'));
-                        //TODO: Actually set it as active again.
-                        //echo '<iframe style="border:0" width="100%" height="170px" src="' . wp_nonce_url('update.php?action=activate-plugin&plugin=' . $result, 'activate-plugin_' . $result) .'"></iframe>';
-                }
         }
         echo '</div>';
 }