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Implementation Guide introduction

Accessibility guidance

This article describes accessibility considerations and recommended settings for Trumba promotion spuds and calendar colors. Use this guidance when evaluating your published website against the Web Content Accessibility Guidelines (WCAG) 2.2 Level AA standards.

This article serves as an addendum to: Accessibility Compliance.

For more information, see Web Content Accessibility Guidelines (WCAG) 2.2.

Important Accessibility depends on the spuds, settings, content, and styles used on your website. Customers need to evaluate the complete published page, including keyboard navigation, visible focus, text alternatives, and color contrast. The behavior described here is not a conformance assessment of every possible configuration.

Promotion spuds with remaining animation limitations

These areas of functionality do not fully comply with the WCAG Level AA standards. Partial support is described in this section, along with some recommendations for mitigating the issues identified. Note that none of the exceptions documented here are configured in the product by default. Customers have to explicitly enable and activate them. Thus, the product meets the WCAG Level AA standards, by default.

Upcoming Fader List

  • Fading pauses while an element inside the spud has keyboard focus, as well as while the mouse hovers over the spud. It resumes when focus or the pointer leaves.
  • This keyboard support addresses the previous concern about event groups fading away while a visitor tabs through their links. However, there is no visitor-operated Play/Pause control that keeps rotation paused after focus leaves.
  • Publishers can adjust Events per group, Display time, and Fade time. These settings do not give visitors control over automatic updates.
  • For an event list without automatic rotation, use a non-animated promotion spud, such as Upcoming Events or Upcoming Table.

Upcoming Vertical Crawler

  • Scrolling pauses when the mouse hovers over the spud, but does not pause when event links receive keyboard focus. There is no visitor-operated Play/Pause control.
  • Event links can move outside the visible area while they have keyboard focus, making it difficult for visitors to see which link is selected. Check 2.4.7 Focus Visible (Level AA) when evaluating the published page.
  • Publisher settings such as Wait time and Scroll time change the animation, but do not provide keyboard pausing or a persistent pause for visitors.
  • We recommend using a non-animated event list instead.

Upcoming Events Crawler

  • The horizontal crawler scrolls continuously. It does not pause on mouse hover or keyboard focus, and has no visitor-operated Play/Pause control.
  • Event links can move outside the visible area while they have keyboard focus. This creates both animation-control and visible-focus concerns.
  • We recommend using a non-animated event list instead.

Event Slider keyboard support and recommended settings

Event Slider supports keyboard navigation. Tabbing to an event link stops automatic rotation and brings its slide into view. The Left and Right Arrow keys navigate slides when focus is inside the slider. Navigation controls have accessible labels, and links in duplicate slides are excluded from the tab order.

  • For visitor-controlled navigation without automatic rotation, set Auto Start to No and enable Show Next/Previous.
  • If you enable Auto Start, also enable Show Play/Pause. The resulting Pause carousel and Resume carousel controls let visitors pause and resume rotation with the keyboard. An explicit pause remains in effect after focus leaves the slider.
  • Pausing when an event link receives focus is not a substitute for enabling Show Play/Pause: without an explicit pause, automatic rotation can resume when focus leaves.
  • Check the published slider with the keyboard and a screen reader, including control labels, focus visibility, and any customized colors.

Calendar colors and text equivalents

Color can supplement information, but must not be the only way to identify an event's calendar or category. See 1.4.1 Use of Color (Level A).

  • Provide the owning calendar or category as text with each event when that distinction is important. Use calendar-name display settings where supported, or include the relevant information in the event text.
  • A color legend alone does not identify an individual event for visitors who cannot distinguish the colors.
  • Maintain sufficient contrast for event text, links, and controls, including hover and focus states. See 1.4.3 Contrast (Minimum) and 1.4.11 Non-text Contrast (Level AA).