jquery/test/promises_aplus_adapters/when.js

50 lines
1.1 KiB
JavaScript

"use strict";
require( "jsdom" ).env( "", function( errors, window ) {
if ( errors ) {
console.error( errors );
return;
}
var jQuery = require( "../../" )( window );
module.exports.deferred = function() {
var adopted, promised,
obj = {
resolve: function() {
if ( !adopted ) {
adopted = jQuery.when.apply( jQuery, arguments );
if ( promised ) {
adopted.then( promised.resolve, promised.reject );
}
}
return adopted;
},
reject: function( value ) {
if ( !adopted ) {
adopted = jQuery.when( jQuery.Deferred().reject( value ) );
if ( promised ) {
adopted.then( promised.resolve, promised.reject );
}
}
return adopted;
},
// A manually-constructed thenable that works even if calls precede resolve/reject
promise: {
then: function() {
if ( !adopted ) {
if ( !promised ) {
promised = jQuery.Deferred();
}
return promised.then.apply( promised, arguments );
}
return adopted.then.apply( adopted, arguments );
}
}
};
return obj;
};
} );