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function getWatchers(root) {
  root = angular.element(root || document.documentElement);
  var watcherCount = 0;
 
  function getElemWatchers(element) {
    var isolateWatchers = getWatchersFromScope(element.data().$isolateScope);
    var scopeWatchers = getWatchersFromScope(element.data().$scope);
    var watchers = scopeWatchers.concat(isolateWatchers);
    angular.forEach(element.children(), function (childElement) {
      watchers = watchers.concat(getElemWatchers(angular.element(childElement)));

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app.directive('validSubmit', ['$parse', function ($parse) {
    return {
        // we need a form controller to be on the same element as this directive
        // in other words: this directive can only be used on a <form>
        require: 'form',
        // one time action per form
        link: function (scope, element, iAttrs, form) {
            form.$submitted = false;
            // get a hold of the function that handles submission when form is valid
            var fn = $parse(iAttrs.validSubmit);