Was macht die Komponente?

Ein Kalender ist eine Komponente, die es Nutzenden ermöglicht, Datumsinformationen anzuzeigen und auszuwählen.

Wann soll die Komponente eingesetzt werden?

• Um Nutzenden eine einfache Möglichkeit zu bieten, Datumsabhänige Informationen wie z.B. Termine zu sehen und zu verwalten.
• Um die Auswahl von Datumsbereichen für Buchungen oder Planungen zu ermöglichen.
• Um wiederkehrende Ereignisse und deren Muster darzustellen.

Regeln

• Es können einzelne Monate oder ganze Jahre dargestellt werden.
• Wird der Kalender im Date-Picker eingesetzt, kann nur ein Datum gewählt werden.
• Wird der Kalender Standalone eingesetzt, so können mehrere Daten gewählt werden.
• Einzelne Tage können mehrere Stati haben.

Spielwiese

The sbb-calendar component displays a calendar that allows the user to select a date.

While being deeply linked to the implementation of the sbb-datepicker-toggle component,
it can be used on its own.

<sbb-calendar></sbb-calendar>

Configuration

It's possible to set a date using the dateSelected property. Also, it's possible to place limits on the selection
using the two properties named min and max. For these three properties, the accepted formats are:

• Date objects
• ISO String
• Unix Timestamp (number of seconds since Jan 1, 1970)

It's recommended to set the time to 00:00:00.

<sbb-calendar min="1599955200" max="1699920000" selected="1649980800"></sbb-calendar>

To simulate the current date, the now property can be used:
it accepts a Date or a timestamp in seconds (as number or string).
This is helpful whether a specific state of the component is needed.

<sbb-calendar selected="1585699200" now="1587945600"></sbb-calendar>

By default, the component takes, in order of priority,
the dateSelected property, the now property or the current date to calculate which month it has to show.
It's possible to move to the previous/next month using the two buttons at the top of the component.

It's also possible to select a specific date by clicking on the month label between the buttons:
this action opens a list of twenty-four selectable years, and, after the year selection, the list of months of that year.
Clicking on an element will set the month and restore the first view, allowing to select the desired day.

The sbb-calendar can be directly displayed in one of these modalities using the view property (default: day).

<sbb-calendar selected="1585699200" view="month"></sbb-calendar>

<sbb-calendar selected="1585699200" view="year"></sbb-calendar>

Unwanted dates can be filtered out using the dateFilter property.
Note that using the dateFilter function as a replacement for the min and max properties will most likely result in a significant loss of performance.
The dateFilter is applied in all the views, so if some months or years are not allowed they will be displayed as disabled in the corresponding view.

/** Returns only working days (Mon-Fri). */
const dateFilterFn: (d: Day) => boolean = d.getDay() !== 6 && d.getDay() !== 0;

<sbb-calendar date-filter=${dateFilterFn}></sbb-calendar>

Style

The component displays by default a single month in the day view, or a list of twenty-four years in the year view,
or a list of months in the month view;
however, setting the wide property to true it's possible to duplicate the view, showing, respectively, two consecutive months or
two sets of twenty-four years or the list of the twelve months for two consecutive years.

<sbb-calendar wide="true" selected="1699920000"></sbb-calendar>

It's also possible to change the orientation of dates by setting the orientation property to vertical.
In this variant, the weekdays are displayed on the left side of the component and the days progress along the vertical direction.
This visual change is applied only to the day view.

<sbb-calendar orientation="vertical"></sbb-calendar>

Events

Consumers can listen to the dateSelected event on the sbb-calendar component to intercept the selected date
which can be read from event.detail.

Keyboard interaction

It's possible to move within the component using the keyboard.

The days disabled due to the presence of the min, max and dateFilter properties are taken into account: for example,
pressing the <kbd>Home</kbd> when the first day of the month is disabled will result in moving to the first non-disabled day.

Horizontal orientation

Vertical orientation

Accessibility

For accessibility purposes, the component is rendered as a native table element and each day is a button.

Properties

Methods

Events