Added a way to hide the jsMessage by calling with empty string, null or no arguments

diff --git a/resources/mediawiki.util/mediawiki.util.js b/resources/mediawiki.util/mediawiki.util.js
index 1db8384..a646eeb 100644 (file)
--- a/resources/mediawiki.util/mediawiki.util.js
+++ b/resources/mediawiki.util/mediawiki.util.js
@@ -320,37 +320,46 @@
                 * Add a little box at the top of the screen to inform the user of
                 * something, replacing any previous message.
                 *
-                * @param message       mixed   DOM-element or HTML to be put inside the message box
+                * @param message       mixed   The DOM-element or HTML-string to be put inside the message box]
+                *                                                      Calling with no arguments, with an empty string or null will hide the message 
                 * @param className     string  Used in adding a class; should be different for each
                 *   call to allow CSS/JS to hide different boxes.  null = no class used.
                 * @return Boolean       True on success, false on failure
                 */
                'jsMessage' : function( message, className ) {
-                       // We special-case skin structures provided by the software.  Skins that
-                       // choose to abandon or significantly modify our formatting can just define
-                       // an mw-js-message div to start with.
-                       var $messageDiv = $( '#mw-js-message' );
-                       if ( !$messageDiv.length ) {
-                               $messageDiv = $( '<div id="mw-js-message">' );
-                               if ( mw.util.$content.parent().length ) { 
-                                       mw.util.$content.parent().prepend( $messageDiv );
-                               } else {
-                                       return false;
-                               }
-                       }
+               
+                       if ( !arguments.length || message === '' || message === null ) {
                        
-                       $messageDiv.show();
-                       if ( className ) {
-                               $messageDiv.attr( 'class', 'mw-js-message-' + className );
-                       }
+                               $( '#mw-js-message' ).empty().hide();
+                               return true; // Emptying and hiding message is intended behaviour, return true  
                        
-                       if ( typeof message === 'object' ) {
-                               $messageDiv.empty();
-                               $messageDiv.append( message ); // Append new content
                        } else {
-                               $messageDiv.html( message );
+                               // We special-case skin structures provided by the software.  Skins that
+                               // choose to abandon or significantly modify our formatting can just define
+                               // an mw-js-message div to start with.
+                               var $messageDiv = $( '#mw-js-message' );
+                               if ( !$messageDiv.length ) {
+                                       $messageDiv = $( '<div id="mw-js-message">' );
+                                       if ( mw.util.$content.parent().length ) { 
+                                               mw.util.$content.parent().prepend( $messageDiv );
+                                       } else {
+                                               return false;
+                                       }
+                               }
+                               
+                               $messageDiv.show();
+                               if ( className ) {
+                                       $messageDiv.attr( 'class', 'mw-js-message-' + className );
+                               }
+                               
+                               if ( typeof message === 'object' ) {
+                                       $messageDiv.empty();
+                                       $messageDiv.append( message ); // Append new content
+                               } else {
+                                       $messageDiv.html( message );
+                               }
+                               return true;
                        }
-                       return true;
                }
 
        };