skins/common/htmlform.js

   1 // Find select-or-other fields.
   2 addOnloadHook( function() {
   3         var fields = getElementsByClassName( document, 'select', 'mw-htmlform-select-or-other' );
   4
   5         for( var i = 0; i < fields.length; i++ ) {
   6                 var select = fields[i];
   7
   8                 addHandler( select, 'change', htmlforms.selectOrOtherSelectChanged );
   9
  10                 // Use a fake 'e' to update it.
  11                 htmlforms.selectOrOtherSelectChanged( { 'target': select } );
  12         }
  13 } );
  14
  15 var htmlforms = {
  16         'selectOrOtherSelectChanged' : function( e ) {
  17                 var select;
  18                 if ( !e ) {
  19                         e = window.event;
  20                 }
  21                 if ( e.target ) {
  22                         select = e.target;
  23                 } else if ( e.srcElement ) {
  24                         select = e.srcElement;
  25                 }
  26                 if ( select.nodeType == 3 ) { // defeat Safari bug
  27                         select = select.parentNode;
  28                 }
  29
  30                 var id = select.id;
  31                 var textbox = document.getElementById( id + '-other' );
  32
  33                 if ( select.value == 'other' ) {
  34                         textbox.disabled = false;
  35                 } else {
  36                         textbox.disabled = true;
  37                 }
  38         }
  39 }
  40