Use the module_change event to figure out if the rss module is

inactive.  If it is, we need to alert the admin user.

2 files changed, 33 insertions, 0 deletions

diff --git a/modules/slideshow/helpers/slideshow_event.php b/modules/slideshow/helpers/slideshow_event.php
new file mode 100644
index 00000000..088d7daa
--- /dev/null
+++ b/modules/slideshow/helpers/slideshow_event.php
@@ -0,0 +1,32 @@
+<?php defined("SYSPATH") or die("No direct script access.");
+/**
+ * Gallery - a web based photo album viewer and editor
+ * Copyright (C) 2000-2008 Bharat Mediratta
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or (at
+ * your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful, but
+ * WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston, MA  02110-1301, USA.
+ */
+class slideshow_event_Core {
+  static function module_change($changes) {
+    if (!module::is_installed("rss") || in_array("rss", $changes->uninstall)) {
+      site_status::warning(
+        t("The Slideshow module requires the RSS module.  " .
+          "<a href=\"%url\">Install the RSS module now</a>",
+          array("url" => url::site("admin/modules"))),
+        "slideshow_needs_rss");
+    } else {
+      site_status::clear("slideshow_needs_rss");
+    }
+  }
+}
diff --git a/modules/slideshow/helpers/slideshow_installer.php b/modules/slideshow/helpers/slideshow_installer.php
index c62369ab..588f36ad 100644
--- a/modules/slideshow/helpers/slideshow_installer.php
+++ b/modules/slideshow/helpers/slideshow_installer.php
@@ -27,5 +27,6 @@ class slideshow_installer {
 
   static function uninstall() {
     module::delete("slideshow");
+    site_status::clear("slideshow_needs_rss");
   }
 }