Abre una ventana modal y enfoca el input text

var app = angular.module('plunker', ['ui.bootstrap']);
var ModalDemoCtrl = function ($scope) {

  $scope.open = function () {
    $scope.shouldBeOpen = true;
  };

  $scope.close = function () {
    $scope.closeMsg = 'I was closed at: ' + new Date();
    $scope.shouldBeOpen = false;
  };
};

app.directive('focusMe', function($timeout, $parse) {
  return {
    link: function(scope, element, attrs) {
      var model = $parse(attrs.focusMe);
      scope.$watch(model, function(value) {
        console.log('value=',value);
        if(value === true) { 
          $timeout(function() {
            element[0].focus(); 
          });
        }
      });
      element.bind('blur', function() {
        console.log('blur')
        scope.$apply(model.assign(scope, false));
      })
    }
  };
});

<!doctype html>
<html ng-app="plunker">
  <head>
    <script src="http://ajax.googleapis.com/ajax/libs/angularjs/1.0.4/angular.js"></script>
    <script src="http://angular-ui.github.com/bootstrap/ui-bootstrap-tpls-0.1.0.js"></script>
    <script src="example.js"></script>
    <link href="//netdna.bootstrapcdn.com/twitter-bootstrap/2.2.2/css/bootstrap-combined.min.css" rel="stylesheet">
  </head>
  <body>

<div ng-controller="ModalDemoCtrl">
    <button class="btn" ng-click="open()">Open me!</button>
    <div modal="shouldBeOpen" close="close()">
        <div class="modal-header">
            <h4>I'm a modal!</h4>
        </div>
        <div class="modal-body">
            Name: <input type="text" focus-me="shouldBeOpen">
        </div>
        <div class="modal-footer">
            <button class="btn btn-warning cancel" ng-click="close()">Cancel</button>
        </div>
    </div>
</div>
  </body>
</html>