Blazor Gantt Accessibility
Out of the box, the Telerik UI for Blazor Gantt provides extensive accessibility support and enables users with disabilities to acquire complete control over its features.
The Gantt is compliant with the Web Content Accessibility Guidelines (WCAG) 2.1 AA standards](https://www.w3.org/TR/WCAG21/) and Section 508 requirements, follows the Web Accessibility Initiative - Accessible Rich Internet Applications (WAI-ARIA) best practices for implementing the keyboard navigation for its component role, provides options for managing its focus and is tested against the most popular screen readers.
WAI-ARIA
This section lists the selectors, attributes, and behavior patterns supported by the component and its composite elements, if any.
The Gantt component is a composite component that is used to represent project planning.
| Selector | Attribute | Usage |
|---|---|---|
.k-gantt |
role=application |
Indicates the Gantt's role as an application. |
The Gantt component integrates the toolbar component and follows its wai-aria support.
ToolBar accessibility specification
The main inner component in the Gantt is the TreeList.
TreeList accessibility specification
Another part of the component is the Splitter component and Wai-Aria support.
Splitter accessibility specification
The following Wai-Aria support is implemented in the TimeLine of the Gantt.
| Selector | Attribute | Usage |
|---|---|---|
.k-gantt-timeline .k-grid-content |
role=tree |
Associates the role of the timeline as a tree. |
.k-gantt-timeline .k-gantt-rows |
role=presentation |
Used to build the accessibility tree. |
.k-gantt-timeline .k-gantt-columns |
role=presentation |
Used to build the accessibility tree. |
.k-gantt-timeline .k-gantt-tasks |
role=presentation |
Used to build the accessibility tasks. |
.k-gantt-timeline .k-task |
role=treeitem |
Associates the role of the timeline task as a tree item. |
aria-level |
Specifies the level of the task. | |
aria-describedby=.k-tooltip id |
Gives more details for the task through its tooltip. | |
.k-gantt-timeline .k-task .k-task-complete |
aria-hidden=true |
Hides the status element from the task. |
.k-gantt-timeline .k-task .k-task-actions |
aria-hidden=true |
Hides the actions element from the task. |
Section 508
The Gantt is fully compliant with the Section 508 requirements.
Testing
The Gantt has been extensively tested automatically with axe-core and manually with the most popular screen readers.
To report any accessibility issues, contact the team through the Telerik Support System.
Screen Readers
The Gantt has been tested with the following screen readers and browsers combinations:
| Environment | Tool |
|---|---|
| Firefox | NVDA |
| Chrome | JAWS |
| Microsoft Edge | JAWS |