Show progress circular during $http post?

Question

What is the best way to use Angular Material\'s Progress circular component with a $http request?

I currently have the code like this below:

Progre

Answer 1

You should hook up to $httpProvider's events:

angular.module('common')
  .config(['$httpProvider', function($httpProvider){
    $httpProvider.interceptors.push(['$rootScope', '$q', '$timeout',
      function($rootScope, $q, $timeout) {
        return {
          request: function(config) {
            $rootScope.posting = new Date().getTime();
            $rootScope.$broadcast('$postingStart', config.url);
            return $q.resolve(config);
          },
          response: function(response) {
            $rootScope.posting = false;
            $rootScope.$broadcast('$postingEnd', response.config.url);
            return $q.resolve(response);
          },
          responseError: function(response) {
            $rootScope.posting = false;
            $rootScope.$broadcast('$postingEnd', response.config.url);
            return $q.reject(response);
          }
        };
      }]);
  }])
.run(['$mdDialog', '$rootScope', function($mdDialog, $rootScope){
  var showing = false;

  function showWait() {
    if(showing) return;
    $mdDialog.show({
      controller: 'waitCtrl',
      template: '' +
      '
' +
      '' +
      '
' +
      '',
      parent: angular.element(document.body),
      clickOutsideToClose: false,
      fullscreen: false
    })
      .then(function(answer) {
        showing = false;
      });
  }


  $rootScope.$on('$postingStart', function(event, url) {
    if (!$rootScope.postingStartTimer) {
      $rootScope.postingStartTimer = $timeout(function() {
        showWait()
      }, 250);
    }
  });

  $rootScope.$on('$postingEnd', function(event, url) {
    if ($rootScope.postingStartTimer && posts.length === 0) {
      $timeout.cancel($rootScope.postingStartTimer);
      $rootScope.postingStartTimer = false;
      if(!showing) return;
      $mdDialog.cancel();
    }
  });

}])