Calender

With a busy schedule, users might need something to keep track of the upcoming events. A calendar app has been provided, where users can enter the upcoming events and a tag will be added in the calendar. Now you don't have to worry whether you will remember the next scheduled meeting.

Installing and usage

ng add angular-calendar

Inside Your Template tag add:

<mwl-calendar-month-view *ngSwitchCase="CalendarView.Month" [viewDate]="viewDate" [events]="events" 
[refresh]="refresh" [activeDayIsOpen]="activeDayIsOpen" (dayClicked)="dayClicked($event.day)" 
(eventClicked)="handleEvent('Clicked', $event.event)" (eventTimesChanged)="eventTimesChanged($event)">
</mwl-calendar-month-view>

Inside Your Script tag add:


import { JsonPipe, NgSwitch, NgSwitchCase } from '@angular/common';
import { Component, TemplateRef, ViewChild } from '@angular/core';
import { FormsModule } from '@angular/forms';
import { NgbModal } from '@ng-bootstrap/ng-bootstrap';
import { CalendarCommonModule, CalendarDayModule, CalendarEvent, CalendarEventAction, CalendarEventTimesChangedEvent, 
  CalendarMonthModule, CalendarView, CalendarWeekModule } from 'angular-calendar';
import { FlatpickrModule } from 'angularx-flatpickr';
import { EventColor } from 'calendar-utils';
import { addDays, addHours, endOfDay, endOfMonth, isSameDay, isSameMonth, startOfDay, subDays, } from 'date-fns';
import { Subject } from 'rxjs';

const colors: Record = {
  red: {
    primary: '#ad2121',
    secondary: '#FAE3E3',
  },
  blue: {
    primary: '#1e90ff',
    secondary: '#D1E8FF',
  },
  yellow: {
    primary: '#e3bc08',
    secondary: '#FDF1BA',
  },
};

@Component({
    selector: 'app-calender',
    templateUrl: './calender.html',
    styleUrls: ['./calender.scss'],
    imports: [CalendarCommonModule, NgSwitch, NgSwitchCase, CalendarMonthModule, 
    CalendarWeekModule, CalendarDayModule, FormsModule, FlatpickrModule, JsonPipe]
})
export class Calender {

  @ViewChild('modalContent', { static: false })
  
  public modalContent!: TemplateRef;
  public view: CalendarView = CalendarView.Month;
  public CalendarView = CalendarView;
  public viewDate: Date = new Date();

  modalData!: {
    action: string;
    event: CalendarEvent;
  };

  actions: CalendarEventAction[] = [
    {
      label: '',
      a11yLabel: 'Edit',
      onClick: ({ event }: { event: CalendarEvent }): void => {
        this.handleEvent('Edited', event);
      },
    },
    {
      label: '',
      a11yLabel: 'Delete',
      onClick: ({ event }: { event: CalendarEvent }): void => {
        this.events = this.events.filter((iEvent) => iEvent !== event);
        this.handleEvent('Deleted', event);
      },
    },
  ];

  refresh = new Subject();

  events: CalendarEvent[] = [
    {
      start: subDays(startOfDay(new Date()), 1),
      end: addDays(new Date(), 1),
      title: 'A 3 day event',
      color: {
        primary: '#ad2121',
        secondary: '#FAE3E3'
      },
      actions: this.actions,
      allDay: true,
      resizable: {
        beforeStart: true,
        afterEnd: true,
      },
      draggable: true,
    },
    {
      start: startOfDay(new Date()),
      title: 'An event with no end date',
      color: { ...colors['yellow'] },
      actions: this.actions,
    },
    {
      start: subDays(endOfMonth(new Date()), 3),
      end: addDays(endOfMonth(new Date()), 3),
      title: 'A long event that spans 2 months',
      color: { ...colors['blue'] },
      allDay: true,
    },
    {
      start: addHours(startOfDay(new Date()), 2),
      end: addHours(new Date(), 2),
      title: 'A draggable and resizable event',
      color: { ...colors['yellow'] },
      actions: this.actions,
      resizable: {
        beforeStart: true,
        afterEnd: true,
      },
      draggable: true,
    },
  ];

  activeDayIsOpen: boolean = true;
  color: string
  constructor(private modal: NgbModal) {
  }

  dayClicked({ date, events }: { date: Date; events: CalendarEvent[] }): void {
    if (isSameMonth(date, this.viewDate)) {
      if (
        (isSameDay(this.viewDate, date) && this.activeDayIsOpen === true) ||
        events.length === 0
      ) {
        this.activeDayIsOpen = false;
      } else {
        this.activeDayIsOpen = true;
      }
      this.viewDate = date;
    }
  }

  eventTimesChanged({
    event,
    newStart,
    newEnd,
  }: CalendarEventTimesChangedEvent): void {
    this.events = this.events.map((iEvent) => {
      if (iEvent === event) {
        return {
          ...event,
          start: newStart,
          end: newEnd,
        };
      }
      return iEvent;
    });
    this.handleEvent('Dropped or resized', event);
  }

  handleEvent(action: string, event: CalendarEvent): void {
    this.modalData = { event, action };
    this.modal.open(this.modalContent, { size: 'lg' });
  }

  addEvent(): void {
    this.events = [
      ...this.events,
      {
        title: 'New event',
        start: startOfDay(new Date()),
        end: endOfDay(new Date()),
        color: colors['red'],
        draggable: true,
        resizable: {
          beforeStart: true,
          afterEnd: true,
        },
      },
    ];
  }

  deleteEvent(eventToDelete: CalendarEvent) {
    this.events = this.events.filter((event) => event !== eventToDelete);
  }

  setView(view: CalendarView) {
    this.view = view;
  }

  closeOpenMonthViewDay() {
    this.activeDayIsOpen = false;
  }

}