Scheduler - Implement getOccurrences() (#32630)

Author: Tucchhaa

packages/devextreme/js/__internal/scheduler/m_scheduler.ts

@@ -78,6 +78,7 @@ import { setAppointmentGroupValues } from './utils/resource_manager/appointment_
 import { createResourceEditorModel } from './utils/resource_manager/popup_utils';
 import { ResourceManager } from './utils/resource_manager/resource_manager';
 import AppointmentLayoutManager from './view_model/appointments_layout_manager';
+import type { Occurrence } from './view_model/filtration/get_occurrences';
 import { AppointmentDataSource } from './view_model/m_appointment_data_source';
 import type { AppointmentViewModelPlain } from './view_model/types';
 import SchedulerAgenda from './workspaces/m_agenda';
@@ -2148,6 +2149,10 @@ class Scheduler extends SchedulerOptionsBaseWidget {
     }
   }
 
+  getOccurrences(startDate: Date, endDate: Date, rawAppointments: Appointment[]): Occurrence[] {
+    return this._layoutManager.getOccurrences(startDate, endDate, rawAppointments);
+  }
+
   getFirstDayOfWeek(): FirstDayOfWeek {
     return isDefined(this.getViewOption('firstDayOfWeek'))
       ? this.getViewOption('firstDayOfWeek') as FirstDayOfWeek

packages/devextreme/js/__internal/scheduler/view_model/__mock__/scheduler.mock.ts

@@ -0,0 +1,42 @@
+import { mockAppointmentDataAccessor } from '../../__mock__/appointment_data_accessor.mock';
+import { mockTimeZoneCalculator } from '../../__mock__/timezone_calculator.mock';
+import type Scheduler from '../../m_scheduler';
+import { ResourceManager } from '../../utils/resource_manager/resource_manager';
+
+export const getSchedulerMock = ({
+  type,
+  startDayHour,
+  endDayHour,
+  offsetMinutes,
+  resourceManager,
+  dateRange,
+  skippedDays,
+}: {
+  type: string;
+  startDayHour: number;
+  endDayHour: number;
+  offsetMinutes: number;
+  resourceManager?: ResourceManager;
+  skippedDays?: number[];
+  dateRange?: Date[];
+}): Scheduler => ({
+  timeZoneCalculator: mockTimeZoneCalculator,
+  currentView: { type, skippedDays: skippedDays ?? [] },
+  getWorkSpace: () => ({
+    getDateRange: () => dateRange ?? [
+      new Date(2000, 0, 10, startDayHour),
+      new Date(2000, 0, 11, endDayHour),
+    ],
+  }),
+  getTimeZone: () => 'Etc/UTC',
+  getViewOption: (name: string) => ({
+    startDayHour,
+    endDayHour,
+    allDayPanelMode: 'allDay',
+    cellDuration: 30,
+  }[name]),
+  option: (name: string) => ({ firstDayOfWeek: 0, showAllDayPanel: true }[name]),
+  getViewOffsetMs: () => offsetMinutes * 60_000,
+  resourceManager: resourceManager ?? new ResourceManager([]),
+  _dataAccessors: mockAppointmentDataAccessor,
+}) as unknown as Scheduler;