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   1  /*!
   2   * JavaScript for Special:Import
   3   */
   4  ( function ( $ ) {
   5  	function updateImportSubprojectList() {
   6          var $projectField = $( '#mw-import-table-interwiki #interwiki' ),
   7              $subprojectField = $projectField.parent().find( '#subproject' ),
   8              $selected = $projectField.find( ':selected' ),
   9              oldValue = $subprojectField.val(),
  10              option, options;
  11  
  12          if ( $selected.attr( 'data-subprojects' ) ) {
  13              options = $.map( $selected.attr( 'data-subprojects' ).split( ' ' ), function ( el ) {
  14                  option = document.createElement( 'option' );
  15                  option.appendChild( document.createTextNode( el ) );
  16                  option.setAttribute( 'value', el );
  17                  if ( oldValue === el ) {
  18                      option.setAttribute( 'selected', 'selected' );
  19                  }
  20                  return option;
  21              } );
  22              $subprojectField.show().empty().append( options );
  23          } else {
  24              $subprojectField.hide();
  25          }
  26      }
  27  
  28      $( function () {
  29          var $projectField = $( '#mw-import-table-interwiki #interwiki' );
  30          if ( $projectField.length ) {
  31              $projectField.change( updateImportSubprojectList );
  32              updateImportSubprojectList();
  33          }
  34      } );
  35  }( jQuery ) );