Merge pull request #445 from bsutton/master

feat: Added 'clear' method to EventController.

Author: PRBaraiya

README.md

@@ -255,17 +255,18 @@ assigned.
 
 Methods provided by `EventController`
 
-| Name            | Parameters                                                   | Description                                               |
-|-----------------|--------------------------------------------------------------|-----------------------------------------------------------|
-| add             | CalendarEventData\<T\> event                                 | Adds one event in controller and rebuilds view.           |
-| addAll          | List\<CalendarEventData\<T\>\> events                        | Adds list of events in controller and rebuilds view.      |
-| remove          | CalendarEventData\<T\> event                                 | Removes an event from controller and rebuilds view.       |
-| removeAll       | List\<CalendarEventData\<T\>\> events                        | Removes all event defined in the list                     |
-| removeWhere     | TestPredicate\<CalendarEventData\<T\>\> test                 | Removes all events for which test returns true.           |
-| update          | CalendarEventData\<T\> event, CalendarEventData\<T\> updated | Updates event with updated event.                         |
-| getFullDayEvent | DateTime date                                                | Returns the list of full day events stored in controller  |
-| updateFilter    | EventFilter\<T\> newFilter                                   | Updates the event filter of the controller.               |
-| getEventsOnDay  | DateTime date                                                | Returns list of events on `date`                          |
+| Name            | Parameters                                                   | Description                                                 |
+|-----------------|--------------------------------------------------------------|-------------------------------------------------------------|
+| add             | CalendarEventData\<T\> event                                 | Adds one event in controller and rebuilds view.             |
+| addAll          | List\<CalendarEventData\<T\>\> events                        | Adds list of events in controller and rebuilds view.        |
+| remove          | CalendarEventData\<T\> event                                 | Removes an event from controller and rebuilds view.         |
+| removeAll       | List\<CalendarEventData\<T\>\> events                        | Removes all event defined in the list and rebuilds the view |
+| clear           |                                                              | Removes events from the controller and rebuilds the view    |
+| removeWhere     | TestPredicate\<CalendarEventData\<T\>\> test                 | Removes all events for which test returns true.             |
+| update          | CalendarEventData\<T\> event, CalendarEventData\<T\> updated | Updates event with updated event.                           |
+| getFullDayEvent | DateTime date                                                | Returns the list of full day events stored in controller    |
+| updateFilter    | EventFilter\<T\> newFilter                                   | Updates the event filter of the controller.                 |
+| getEventsOnDay  | DateTime date                                                | Returns list of events on `date`                            |
 
 Check [documentation](https://pub.dev/documentation/calendar_view/latest/calendar_view/EventController-class.html) for more info.
 

lib/src/event_controller.dart

@@ -147,6 +147,12 @@ class EventController<T extends Object?> extends ChangeNotifier {
     notifyListeners();
   }
 
+  void clear() {
+    _calendarData.clear();
+
+    notifyListeners();
+  }
+
   /// Removes multiple [event] from this controller.
   void removeWhere(TestPredicate<CalendarEventData<T>> test) {
     _calendarData.removeWhere(test);
@@ -615,5 +621,14 @@ class CalendarData<T extends Object?> {
     events.addAll(recurringEvents);
     return events;
   }
+
+  /// Remove all events from the controller.
+  void clear() {
+    _fullDayEventList.clear();
+    _rangingEventList.clear();
+    _singleDayEvents.clear();
+    _eventList.clear();
+    _recurringEventsList.clear();
+  }
   //#endregion
 }

test/src/event_controller_test.dart

@@ -0,0 +1,25 @@
+import 'package:calendar_view/calendar_view.dart';
+import 'package:flutter_test/flutter_test.dart';
+
+void main() {
+  testWidgets('event controller ...', (tester) async {
+    final controller = EventController();
+
+    final now = DateTime.now();
+    controller.add(CalendarEventData<String>(
+        title: 'none',
+        date: now,
+        startTime: now,
+        endTime: now.add(Duration(hours: 1))));
+    controller.add(CalendarEventData<String>(
+      title: 'All Day',
+      date: DateTime.now().withoutTime,
+    ));
+
+    expect(controller.getFullDayEvent(now).length, equals(1));
+    expect(controller.getEventsOnDay(now).length, equals(2));
+    expect(controller.allEvents.length, equals(2));
+    controller.clear();
+    expect(controller.allEvents.length, equals(0));
+  });
+}