resources/mediawiki/mediawiki.htmlform.js

   1 /**
   2  * Utility functions for jazzing up HTMLForm elements.
   3  */
   4 ( function ( $ ) {
   5
   6         /**
   7          * jQuery plugin to fade or snap to visible state.
   8          *
   9          * @param {boolean} instantToggle [optional]
  10          * @return {jQuery}
  11          */
  12         $.fn.goIn = function ( instantToggle ) {
  13                 if ( instantToggle === true ) {
  14                         return $(this).show();
  15                 }
  16                 return $(this).stop( true, true ).fadeIn();
  17         };
  18
  19         /**
  20          * jQuery plugin to fade or snap to hiding state.
  21          *
  22          * @param {boolean} instantToggle [optional]
  23          * @return jQuery
  24          */
  25         $.fn.goOut = function ( instantToggle ) {
  26                 if ( instantToggle === true ) {
  27                         return $(this).hide();
  28                 }
  29                 return $(this).stop( true, true ).fadeOut();
  30         };
  31
  32         /**
  33          * Bind a function to the jQuery object via live(), and also immediately trigger
  34          * the function on the objects with an 'instant' parameter set to true.
  35          * @param {Function} callback Takes one parameter, which is {true} when the
  36          *  event is called immediately, and {jQuery.Event} when triggered from an event.
  37          */
  38         $.fn.liveAndTestAtStart = function ( callback ){
  39                 $(this)
  40                         .live( 'change', callback )
  41                         .each( function () {
  42                                 callback.call( this, true );
  43                         } );
  44         };
  45
  46         $( function () {
  47
  48                 // Animate the SelectOrOther fields, to only show the text field when
  49                 // 'other' is selected.
  50                 $( '.mw-htmlform-select-or-other' ).liveAndTestAtStart( function ( instant ) {
  51                         var $other = $( '#' + $(this).attr( 'id' ) + '-other' );
  52                         $other = $other.add( $other.siblings( 'br' ) );
  53                         if ( $(this).val() === 'other' ) {
  54                                 $other.goIn( instant );
  55                         } else {
  56                                 $other.goOut( instant );
  57                         }
  58                 });
  59
  60         } );
  61
  62 }( jQuery ) );