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Third-Party Dragging Libraries

It’s possible to leverage a third-party library to do your external element drag-n-drop instead of using FullCalendar. You might want to do this if you prefer the visual effects of another library, need “sorting” functionality, or need the ability to drag-n-drop between multiple containers, functionality that FullCalendar does not have.

FullCalendar offers a way to do this via the ThirdPartyDraggable class. This class will work with any third-party drag-n-drop library, without needing any sort of specific adapter. The following example demonstrates Dragula:

import { Calendar } from '@fullcalendar/core';
import interactionPlugin, { ThirdPartyDraggable } from '@fullcalendar/interaction';
import dragula from 'dragula';

document.addEventListener('DOMContentLoaded', function() {
  let containerEl = document.getElementById('external-events-list');
  let calendarEl = document.getElementBy('mycalendar');

  let drake = dragula({
    containers: [ containerEl ],
    copy: true
  });

  new ThirdPartyDraggable(containerEl, {
    itemSelector: '.my-item',
    mirrorSelector: '.gu-mirror', // the dragging element that dragula renders
    eventData: function(eventEl) {
      return {
        title: eventEl.innerText
      };
    }
  });

  let calendar = new Calendar(calendarEl, {
    plugins: [ interactionPlugin ],
    droppable: true
  });

  calendar.render();
});

The API for ThirdPartyDraggable is very similar to Draggable. Please check that out first.

The ThirdPartyDraggable constructor accepts the following options:

eventData

An object or a function that returns an object.

itemSelector

A CSS selector that matches draggable elements within a container element.

mirrorSelector

Your third party library undoubtedly renders a placeholder element that moves as your mouse drags. It is useful to disable this placeholder element for when the element is dragged over a time slot and FullCalendar renders its own placeholder element. Specify a CSS selector, relative to the <body>.