Added docs for the task bloc

lib/src/blocs/new_image_bloc.dart

@@ -26,7 +26,7 @@ class NewImageBloc {
   /// A subject of the current user model.
   final _user = BehaviorSubject<UserModel>();
 
-  /// A subject of the current task event name.
+  /// A subject of the current media event name.
   final _eventName = BehaviorSubject<String>();
 
   NewImageBloc() {
@@ -40,10 +40,10 @@ class NewImageBloc {
   /// An observable of the user model.
   Observable<UserModel> get userModelStream => _user.stream;
 
-  /// An observable of the task event name.
+  /// An observable of the media event name.
   Observable<String> get eventName => _eventName.stream;
 
-  /// An observable of the ready to submit flag.
+  /// An observable of the submit enabled flag.
   Observable<bool> get submitEnabled =>
       Observable.combineLatest2(_picture, _eventName, (a, b) => true);
 
@@ -51,7 +51,7 @@ class NewImageBloc {
   /// Changes the current picture file.
   Function(File) get changePicture => _picture.sink.add;
 
-  /// Changes the current task event name.
+  /// Changes the current media event name.
   Function(String) get changeEventName => _eventName.sink.add;
 
   /// Fetches and updates the current user.

lib/src/blocs/task_bloc.dart

@@ -9,39 +9,66 @@ import '../resources/firestore_provider.dart';
 import '../services/auth_service.dart';
 import '../services/current_task_service.dart';
 
+/// Business logic component that manages the state for the task screen.
 class TaskBloc extends Object with Validators {
+  /// An instance of the auth service.
   final AuthService _auth = authService;
+
+  /// An instance of the firebase repository.
   final FirestoreProvider _firestore = firestoreProvider;
+
+  /// An instance of the current task service.
   final CurrentTaskService _taskService = currentTaskService;
+
+  /// A subject of user model.
   final _user = BehaviorSubject<UserModel>();
+
+  /// A subject of task event name.
   final _eventName = BehaviorSubject<String>();
+
+  /// A subject of task text.
   final _taskText = BehaviorSubject<String>();
+
+  /// The priority of the current task.
   TaskPriority priority = TaskPriority.high;
 
+  /// The text of the current global task.
   String get textInitialValue => _taskService.task.text;
 
   //Stream getters.
+  /// An observable of the current user model.
   Observable<UserModel> get userModelStream => _user.stream;
+
+  /// An observable of the current task event name.
   Observable<String> get eventName => _eventName.stream;
+
+  /// An observable of the current task text.
   Observable<String> get taskText =>
       _taskText.stream.transform(validateStringNotEmpty);
+
+  /// An observable of the submit enabled flag.
   Observable<bool> get submitEnabled =>
       Observable.combineLatest2(eventName, taskText, (a, b) => true);
 
   //Sinks getters.
+  /// Changes the current task event name.
   Function(String) get changeEventName => _eventName.sink.add;
+
+  ///Changes the current task text.
   Function(String) get changeTaskText => _taskText.sink.add;
 
   TaskBloc() {
     setCurrentUser();
   }
 
+  /// Changes the current task priority.
   void setPriority(TaskPriority newPriority) {
     priority = newPriority;
   }
 
   //TODO: Figure out how to update the event and user properties if needed.
 
+  /// Saves or updates the current task in the database.
   Future<void> submit(isEdit) {
     if (isEdit) {
       return _firestore.updateTask(
@@ -60,12 +87,15 @@ class TaskBloc extends Object with Validators {
     return _firestore.addTask(newTask);
   }
 
+  /// Fetches and updates the current user.
   Future<void> setCurrentUser() async {
     final user = await _auth.currentUser;
     final userModel = await _firestore.getUser(username: user.email);
     _user.add(userModel);
   }
 
+  /// Grabs the data from the current global task and pipes it to the local
+  /// streams.
   void populateWithCurrentTask() {
     TaskModel currentTask = _taskService.task;
     if (currentTask != null) {