From a02cfa9b085fc875fc55f57029a8e5846771ed5e Mon Sep 17 00:00:00 2001
From: thomascube <thomas@roundcube.net>
Date: Sat, 13 Aug 2011 09:10:11 +0000
Subject: Fix incomplete backport from trunk

---
 program/include/main.inc   | 10 ++++++++++
 program/include/rcmail.php | 15 +++++++++++++++
 2 files changed, 25 insertions(+)

diff --git a/program/include/main.inc b/program/include/main.inc
index 3c04e20bf..842b93323 100644
--- a/program/include/main.inc
+++ b/program/include/main.inc
@@ -92,6 +92,16 @@ function rcube_label($p, $domain=null)
   return rcmail::get_instance()->gettext($p, $domain);
 }
 
+/**
+ * Global wrapper of rcmail::text_exists()
+ * to check whether a text label is defined
+ *
+ * @see rcmail::text_exists()
+ */
+function rcube_label_exists($name, $domain=null)
+{
+  return rcmail::get_instance()->text_exists($name, $domain);
+}
 
 /**
  * Overwrite action variable
diff --git a/program/include/rcmail.php b/program/include/rcmail.php
index 7ef34724e..d29ebe780 100644
--- a/program/include/rcmail.php
+++ b/program/include/rcmail.php
@@ -915,6 +915,21 @@ class rcmail
     return $text;
   }
 
+  /**
+   * Check if the given text lable exists
+   *
+   * @param string Label name
+   * @return boolean True if text exists (either in the current language or in en_US)
+   */
+  public function text_exists($name, $domain=null)
+  {
+    // load localization files if not done yet
+    if (empty($this->texts))
+      $this->load_language();
+
+    // check for text with domain first
+    return ($domain && isset($this->texts[$domain.'.'.$name])) || isset($this->texts[$name]);
+  }
 
   /**
    * Load a localization package
-- 
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