resources/src/mediawiki.widgets.visibleByteLimit/mediawiki.widgets.visibleByteLimit.js

   1 /**
   2  * Add a visible byte limit label to a TextInputWidget
   3  *
   4  * Uses jQuery.byteLimit to enforce the limit.
   5
   6  * @param {OO.ui.TextInputWidget} textInputWidget Text input widget
   7  * @param {number} [limit] Byte limit, defaults to $input's maxlength
   8  */
   9 mediaWiki.widgets.visibleByteLimit = function ( textInputWidget, limit ) {
  10         limit = limit || +textInputWidget.$input.attr( 'maxlength' );
  11
  12         function updateCount() {
  13                 textInputWidget.setLabel( ( limit - $.byteLength( textInputWidget.getValue() ) ).toString() );
  14         }
  15         textInputWidget.on( 'change', updateCount );
  16         // Initialise value
  17         updateCount();
  18
  19         // Actually enforce limit
  20         textInputWidget.$input.byteLimit( limit );
  21 };