From 44e74e7321f5a3c8e64733cd006e351c1a1fd30f Mon Sep 17 00:00:00 2001
From: rWatcher <rwatcher@watcherdatabase.tk>
Date: Tue, 7 Jun 2011 14:06:15 -0400
Subject: [PATCH] Warn that MetaDescription requires the Tags module.

---
 .../metadescription/helpers/metadescription_event.php     | 6 ++++++
 .../metadescription/helpers/metadescription_installer.php | 8 ++++++++
 .../metadescription/helpers/metadescription_event.php     | 6 ++++++
 .../metadescription/helpers/metadescription_installer.php | 8 ++++++++
 4 files changed, 28 insertions(+)

diff --git a/3.0/modules/metadescription/helpers/metadescription_event.php b/3.0/modules/metadescription/helpers/metadescription_event.php
index 5fedfa11..7e773d7e 100644
--- a/3.0/modules/metadescription/helpers/metadescription_event.php
+++ b/3.0/modules/metadescription/helpers/metadescription_event.php
@@ -31,4 +31,10 @@ class metadescription_event_Core {
       site_status::clear("metadescription_needs_tag");
     }
   }
+
+  static function pre_deactivate($data) {
+    if ($data->module == "tag") {
+      $data->messages["warn"][] = t("The MetaDescription module requires the Tags module.");
+    }
+  }
 }
diff --git a/3.0/modules/metadescription/helpers/metadescription_installer.php b/3.0/modules/metadescription/helpers/metadescription_installer.php
index 6d7d540c..6609ecd9 100644
--- a/3.0/modules/metadescription/helpers/metadescription_installer.php
+++ b/3.0/modules/metadescription/helpers/metadescription_installer.php
@@ -28,6 +28,14 @@ class metadescription_installer {
     site_status::clear("metadescription_needs_tag");
   }
 
+  static function can_activate() {
+    $messages = array();
+    if (!module::is_active("tag")) {
+      $messages["warn"][] = t("The MetaDescription module requires the Tags module.");
+    }
+    return $messages;
+  }
+
   static function uninstall() {
     module::delete("metadescription");
   }
diff --git a/3.1/modules/metadescription/helpers/metadescription_event.php b/3.1/modules/metadescription/helpers/metadescription_event.php
index 5fedfa11..7e773d7e 100644
--- a/3.1/modules/metadescription/helpers/metadescription_event.php
+++ b/3.1/modules/metadescription/helpers/metadescription_event.php
@@ -31,4 +31,10 @@ class metadescription_event_Core {
       site_status::clear("metadescription_needs_tag");
     }
   }
+
+  static function pre_deactivate($data) {
+    if ($data->module == "tag") {
+      $data->messages["warn"][] = t("The MetaDescription module requires the Tags module.");
+    }
+  }
 }
diff --git a/3.1/modules/metadescription/helpers/metadescription_installer.php b/3.1/modules/metadescription/helpers/metadescription_installer.php
index 6d7d540c..6609ecd9 100644
--- a/3.1/modules/metadescription/helpers/metadescription_installer.php
+++ b/3.1/modules/metadescription/helpers/metadescription_installer.php
@@ -28,6 +28,14 @@ class metadescription_installer {
     site_status::clear("metadescription_needs_tag");
   }
 
+  static function can_activate() {
+    $messages = array();
+    if (!module::is_active("tag")) {
+      $messages["warn"][] = t("The MetaDescription module requires the Tags module.");
+    }
+    return $messages;
+  }
+
   static function uninstall() {
     module::delete("metadescription");
   }