Dataset/JS/ToDoApp_AngularJS/js/directives/todoEscape.js

/*global define*/
'use strict';

/**
 * Directive that catches the "Escape" key on the element applied to and evaluates the expression it binds to.
 */

define([
	'angular'
], function (angular) {
	var moduleName = 'TodoEscapeDirective';
	angular
		.module(moduleName, [])
		.directive('todoEscape', function () {
			var ESCAPE_KEY = 27;

			return function (scope, elem, attrs) {
				elem.bind('keydown', function (event) {
					if (event.keyCode === ESCAPE_KEY) {
						scope.$apply(attrs.todoEscape);
					}
				});

				scope.$on('$destroy', function () {
					elem.unbind('keydown');
				});
			};
		});
	return moduleName;
});