First-run page (revisited)

lib/utils.js

 /*
  * This file is part of Adblock Plus <http://adblockplus.org/>,
  * Copyright (C) 2006-2013 Eyeo GmbH
  *
  * Adblock Plus is free software: you can redistribute it and/or modify
  * it under the terms of the GNU General Public License version 3 as
  * published by the Free Software Foundation.
  *
  * Adblock Plus is distributed in the hope that it will be useful,
  * but WITHOUT ANY WARRANTY; without even the implied warranty of
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     }
     finally
     {
       if (keyInfo && !keyInfo.isNull())
         Utils.crypto.SECKEY_DestroySubjectPublicKeyInfo(keyInfo);
       if (pubKey && !pubKey.isNull())
         Utils.crypto.SECKEY_DestroyPublicKey(pubKey);
       if (context && !context.isNull())
         Utils.crypto.VFY_DestroyContext(context, true);
     }
+  },
+
+  /**
+   * Returns the documentation link from the preferences.
+   */
+  getDocLink: function(/**String*/ linkID)
+  {
+    let {Prefs} = require("prefs");
+    let docLink = Prefs.documentation_link;
+    return docLink.replace(/%LINK%/g, linkID).replace(/%LANG%/g, Utils.appLocale);
   }
 };
 
 /**
  * A cache with a fixed capacity, newer entries replace entries that have been
  * stored first.
  * @constructor
  */
 function Cache(/**Integer*/ size)
 {
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     Cu.reportError(e);
     // Expected, ctypes isn't supported in Gecko 1.9.2
     return null;
   }
 });
 
 if ("@mozilla.org/messenger/headerparser;1" in Cc)
   XPCOMUtils.defineLazyServiceGetter(Utils, "headerParser", "@mozilla.org/messenger/headerparser;1", "nsIMsgHeaderParser");
 else
   Utils.headerParser = null;