Multi-Event Selection & Bulk Actions

Multiple event selection can be turned on with the selectMultipleEvents option. Selecting multiple events can be done through user interaction with CTRL/SHIFT/CMD + click or programmatically eg. click of a button or 'select all' checkbox.

Bulk operations like delete, update can be applied the selected events. Things like deleting with the backspace or delete buttons work out of the box but custom actions can be also applied. The selection can be easily retrieved and updated with the selectedEvents option and the onSelectedEventsChange event.

Custom actions can be performed with external buttons or with context menu activated on right-click.

Get started with this example

Demo

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Select multiple events in a agenda view with keyboard shortcuts, or programmatically — bulk delete/update, or right-click for per-event edits.

Code

View code on GitHub 
import { Button, Confirm, Eventcalendar, formatDate, getJson, Page, Select, setOptions, Toast  } from '@mobiscroll/react';
import { useCallback, useEffect, useMemo, useRef, useState } from 'react';

setOptions({
  locale:  ,
  theme: ' ',
  themeVariant: ' '
});

function App() {
  const [confirmMessage, setConfirmMessage] = useState('');
  const [menuAnchor, setMenuAnchor] = useState();
  const [menuAction, setMenuAction] = useState('');
  const [menuOpen, setMenuOpen] = useState(false);
  const [myEvents, setMyEvents] = useState([]);
  const [isConfirmOpen, setConfirmOpen] = useState(false);
  const [isToastOpen, setToastOpen] = useState(false);
  const [selectedEvent, setSelectedEvent] = useState();
  const [selectedEvents, setSelectedEvents] = useState([]);
  const [toastMessage, setToastMessage] = useState('');

  const calRef = useRef();

  const myView = useMemo(() => ({ agenda: { type: 'month' } }), []);

  const menuData = useMemo(
    () => [
      { text: 'Update', value: 'update' },
      { text: 'Delete', value: 'delete' },
    ],
    [],
  );

  const updateSelectedEvents = useCallback(() => {
    const updatedEvents = [...myEvents];
    const events = selectedEvents.length === 0 && selectedEvent ? [selectedEvent] : selectedEvents;
    for (const event of events) {
      const index = updatedEvents.findIndex((x) => x.id === event.id);
      // Handle recurring event occurrence
      if (event.recurring) {
        // Create a new event, with updated color and id
        const newEvent = {
          ...event,
          color: 'orange',
          id: event.id + '_' + formatDate('YYYY-MM-DD', event.start),
          recurring: undefined,
        };
        // Update the original event with a recurring exception
        const updatedEvent = {
          ...event.original,
          recurringException: [...(event.original.recurringException || []), event.start],
        };
        updatedEvents.splice(index, 1, updatedEvent);
        updatedEvents.push(newEvent);
      } else {
        // Update the event color
        const updatedEvent = { ...event, color: 'orange' };
        updatedEvents.splice(index, 1, updatedEvent);
      }
    }
    setMyEvents(updatedEvents);
    setSelectedEvents([]);
    setToastMessage("All selected event's color changed to orange");
    setToastOpen(true);
  }, [myEvents, selectedEvent, selectedEvents]);

  const deleteSelectedEvents = useCallback(() => {
    const events = selectedEvents.length === 0 && selectedEvent ? [selectedEvent] : selectedEvents;
    setConfirmMessage(events.map((e) => e.title).join(', '));
    setConfirmOpen(true);
  }, [selectedEvent, selectedEvents]);

  const selectAllEvents = useCallback(() => {
    const selectedEvents = calRef.current.getEvents();
    setSelectedEvents(selectedEvents);
    setToastMessage('All events selected from view');
    setToastOpen(true);
  }, []);

  const resetSelection = useCallback(() => {
    setSelectedEvents([]);
    setToastMessage('Selection cleared');
    setToastOpen(true);
  }, []);

  const handleToastClose = useCallback(() => {
    setToastOpen(false);
  }, []);

  const handleConfirmClose = useCallback(
    (result) => {
      if (result) {
        const events = selectedEvents.length === 0 && selectedEvent ? [selectedEvent] : selectedEvents;
        const updatedEvents = [...myEvents];
        for (const event of events) {
          const index = updatedEvents.findIndex((x) => x.id === event.id);
          // Handle recurring event occurrence
          if (event.recurring) {
            // Update the original event with a recurring exception
            const updatedEvent = {
              ...event.original,
              recurringException: [...(event.original.recurringException || []), event.start],
            };
            updatedEvents.splice(index, 1, updatedEvent);
          } else {
            // Remove the event
            updatedEvents.splice(index, 1);
          }
        }
        setMyEvents(updatedEvents);
        setSelectedEvents([]);
        setToastMessage('Deleted');
        setToastOpen(true);
      }
      setConfirmOpen(false);
    },
    [myEvents, selectedEvent, selectedEvents],
  );

  const handleEventUpdate = useCallback(
    (args) => {
      if (args.isDelete) {
        if (!isConfirmOpen) {
          deleteSelectedEvents();
        }
        return false;
      }
    },
    [isConfirmOpen, deleteSelectedEvents],
  );

  const handleEventDelete = useCallback(() => {
    if (!isConfirmOpen) {
      deleteSelectedEvents();
      return false;
    }
  }, [isConfirmOpen, deleteSelectedEvents]);

  const handleEventRightClick = useCallback((args) => {
    args.domEvent.preventDefault();
    setSelectedEvent(args.event);
    setMenuAnchor(args.domEvent.target);
    setTimeout(() => {
      setMenuOpen(true);
    });
  }, []);

  const handleSelectedEventsChange = useCallback((args) => {
    setSelectedEvents(args.events);
  }, []);

  const handleMenuChange = useCallback(
    (args) => {
      setMenuAction(args.value);
      if (args.value === 'update') {
        updateSelectedEvents();
      } else if (args.value === 'delete') {
        deleteSelectedEvents();
      }
    },
    [deleteSelectedEvents, updateSelectedEvents],
  );

  const handleMenuClose = useCallback(() => {
    setMenuAction(null);
    setMenuOpen(false);
  }, []);

  const handleDeleteKey = useCallback(
    (ev) => {
      if (!isConfirmOpen && (ev.code === 'Delete' || ev.code === 'Backspace' || ev.keyCode === 8 || ev.keyCode === 46)) {
        deleteSelectedEvents();
      }
    },
    [isConfirmOpen, deleteSelectedEvents],
  );

  useEffect(() => {
    getJson(
      'https://trial.mobiscroll.com/events/?vers=5',
      (events) => {
        setMyEvents(events);
      },
      'jsonp',
    );
  }, []);

  return (
    <Page className="mds-bulk-actions">
      <div className="mbsc-grid mbsc-no-padding" onKeyDown={handleDeleteKey}>
        <div className="mbsc-row">
          <div className="mds-bulk-actions-calendar mbsc-col-sm-9 mbsc-push-sm-3">
            <Eventcalendar
              data={myEvents}
              ref={calRef}
              view={myView}
              selectMultipleEvents={true}
              selectedEvents={selectedEvents}
              onEventDelete={handleEventDelete}
              onEventUpdate={handleEventUpdate}
              onEventRightClick={handleEventRightClick}
              onSelectedEventsChange={handleSelectedEventsChange}
            />
            <Select
              anchor={menuAnchor}
              data={menuData}
              display="anchored"
              isOpen={menuOpen}
              showInput={false}
              touchUi={false}
              value={menuAction}
              onChange={handleMenuChange}
              onClose={handleMenuClose}
            />
          </div>
          <div className="mbsc-col-sm-3 mbsc-pull-sm-9 mbsc-flex-col">
            <div className="mbsc-button-group-block">
              <Button onClick={selectAllEvents}>Select all from view</Button>
              <Button onClick={resetSelection}>Reset selection</Button>
              <Button onClick={updateSelectedEvents}>Update selected</Button>
            </div>
            <div className="mbsc-form-group-title">Currently selected</div>
            <div className="mds-bulk-actions-event-list mbsc-padding mbsc-flex-1-1">
              <ul>
                {selectedEvents.map((e, i) => (
                  <li key={i}>{e.title}</li>
                ))}
              </ul>
            </div>
          </div>
        </div>
      </div>
      <Confirm
        isOpen={isConfirmOpen}
        title="Are you sure you want to delete the following events?"
        message={confirmMessage}
        okText="Delete"
        onClose={handleConfirmClose}
      />
      <Toast isOpen={isToastOpen} message={toastMessage} onClose={handleToastClose} />
    </Page>
  );
}

export default App;

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