Open ng-typeahea on click

typeheadonclick.js

.directive('typeaheadClickOpen', function($parse, $timeout) {
  var dir;
  return dir = {
    restrict: 'A',
    require: 'ngModel',
    link: function($scope, elem, attrs) {
      var triggerFunc;
      triggerFunc = function(evt) {
        var ctrl, prev;
        ctrl = elem.controller('ngModel');
        prev = ctrl.$modelValue || '';
        ctrl.$setViewValue(prev ? '' : ' ');
        if (prev) {
          return $timeout(function() {
            return ctrl.$setViewValue("" + prev);
          });
        }
      };
      return elem.bind('click', triggerFunc);
    }
  };
});