@progress/wct-a11y-spec

[ { "h2": "Accessibility Support" }, { "p": "Out of the box, the Telerik and Kendo UI DropDownTree provides extensive accessibility support and enables users with disabilities to acquire complete control over its features." }, { "p": "The DropDownTree is compliant with the [Web Content Accessibility Guidelines (WCAG) 2.2 standards](https://www.w3.org/TR/WCAG22/) and [Section 508](http://www.section508.gov/) requirements, follows the [Web Accessibility Initiative - Accessible Rich Internet Applications (WAI-ARIA)](https://www.w3.org/WAI/ARIA/apg/) best practices for implementing the [keyboard navigation](#keyboard-navigation) for its `component` role, provides options for [managing its focus](#managing-the-focus) and is tested against the most popular [screen readers](#screen-readers)." }, { "h3": "WAI-ARIA" }, { "p": "This section lists the selectors, attributes, and behavior patterns supported by the component and its composite elements, if any." }, { "h4": "DropDownTree Wrapping Element" }, { "p": "The following table summarizes the selectors and attributes supported by the DropDownTree wrapper element:" }, { "table": { "headers": [ "Selector", "Attribute", "Usage" ], "rows": [ { "Selector": "`.k-dropdowntree`", "Attribute": "`role=combobox`", "Usage": "Announces the drop-down element of the button." }, { "Selector": "", "Attribute": "`label for` or `aria-label` or `aria-labelledby`", "Usage": "The input requires an accessible name that will be assigned to it." }, { "Selector": "", "Attribute": "`aria-haspopup=tree`", "Usage": "Indicates the presence of a popup with a tree navigation." }, { "Selector": "", "Attribute": "`aria-expanded=true/false`", "Usage": "Announces the state of the popup visibility." }, { "Selector": "", "Attribute": "`aria-controls=.k-treeview id`", "Usage": "Points to the `treeview` element. Signifies that the `combobox` element controls the `treeview` one." }, { "Selector": "", "Attribute": "`aria-describedby=.k-input-inner id`", "Usage": "Announces the selected value of the drop-down." }, { "Selector": "", "Attribute": "`aria-readonly=true`", "Usage": "The attribute is rendered only when the drop-down is read-only." }, { "Selector": "", "Attribute": "`aria-autocomplete=list`", "Usage": "The attribute is rendered and the value is set to `list` when the filtering feature is enabled." }, { "Selector": "", "Attribute": "`aria-invalid=true`", "Usage": "The attribute is rendered only when the drop-down is in a form and announces the valid state of the component." }, { "Selector": "", "Attribute": "`aria-busy=true`", "Usage": "The attribute is rendered only when the drop-down is loading data." }, { "Selector": "", "Attribute": "`tabindex=0`", "Usage": "The element must be focusable." }, { "Selector": "`.k-dropdowntree.k-disabled`", "Attribute": "`aria-disabled=true`", "Usage": "The attribute is rendered only when the drop-down is disabled." }, { "Selector": "`.k-input-button`", "Attribute": "`role=button` or `nodeName=button`", "Usage": "The element must either be a `<button>` element or must have `role=\"button\"` assigned." }, { "Selector": "", "Attribute": "`aria-label`", "Usage": "The button requires an accessible name that will be assigned to it." }, { "Selector": "", "Attribute": "`tabindex=-1`", "Usage": "The `button` element must not be focusable." } ] } }, { "h4": "Popup Listbox" }, { "p": "The popup element of the DropDownTree has to implement the WAI-ARIA specification for a Popup List component. The following table summarizes the selectors and attributes supported by the listbox popup of the DropDownTree:" }, { "table": { "headers": [ "Selector", "Attribute", "Usage" ], "rows": [ { "Selector": "`.k-animation-container`", "Attribute": "`role=region`", "Usage": "When the component container is appended to the `<body>` element of the document, it requires you to assign a `landmark` role to it. Otherwise, it must be appended to an element with an appropriate `landmark` role." }, { "Selector": "", "Attribute": "`aria-label` or `aria-labelledby`", "Usage": "Provides a label when the container has a `region` role assigned." } ] } }, { "h4": "TreeView" }, { "p": "The tree that is placed in the `popup` element of the component must implement the specification for a TreeView component." }, { "link": { "title": "TreeView accessibility specification", "source": "{{treeview_a11y_link}}" } }, { "h4": "Adaptive Mode" }, { "p": "When the component is in adaptive mode, the popup element follows the specifications of the ActionSheet component." }, { "link": { "title": "ActionSheet accessibility specification", "source": "{{actionsheet_a11y_link}}" } }, { "h3": "Keyboard Shortcuts" }, { "p": "This section lists the keyboard shortcuts supported by the DropDownTree composite elements." }, { "h4": "DropDownTree Wrapping Element" }, { "p": "The following table summarizes the keyboard combinations and input behavior supported by the DropDownTree wrapper element:" }, { "table": { "headers": [ "Shortcut", "Behavior" ], "rows": [ { "Shortcut": "`Down Arrow`", "Behavior": "Selects the next available item." }, { "Shortcut": "`Up Arrow`", "Behavior": "Selects the previous available item." }, { "Shortcut": "`Alt/Opt(Mac) Down`", "Behavior": "Opens the popup." }, { "Shortcut": "`Alt` (or `Opt` on Mac) + `Up Arrow` or `Esc`", "Behavior": "`Closes the popup." }, { "Shortcut": "`Enter`", "Behavior": "Selects and confirms the focused item." }, { "Shortcut": "`Esc`", "Behavior": "Clears the value when the popup is not open." } ] } }, { "h4": "Listbox Popup" }, { "p": "The `treeview` element inside the popup must implement the keyboard navigation specification for a TreeView component:" }, { "link": { "title": "TreeView specification", "source": "{{treeview_kb_link}}" } }, { "h4": "ActionSheet Popup" }, { "p": "In adaptive mode, the popup element of the DropDownTree has to implement the keyboard navigation specification for an ActionSheet component." }, { "link": { "title": "ActionSheet specification", "source": "{{actionsheet_kb_link}}" } }, { "p": "The following rules deviate from the standard ActionSheet behavior:" }, { "table": { "headers": [ "Shortcut", "Behavior" ], "rows": [ { "Shortcut": "`Tab`", "Behavior": "Closes the actionsheet and focuses the next focusable element." } ] } }, { "h3": "Testing" }, { "p": "The DropDownTree has been extensively tested automatically with [axe-core](https://github.com/dequelabs/axe-core) and manually with the most popular screen readers." }, { "h3": "Screen Readers" }, { "p": "The DropDownTree has been tested with the following screen readers and browsers combinations:" }, { "table": { "headers": [ "Environment", "Tool" ], "rows": [ [ "Firefox", "NVDA" ], [ "Chrome", "JAWS" ], [ "Microsoft Edge", "JAWS" ] ] } }, { "h3": "Resources" }, { "ul": [ { "link": { "source": "https://www.w3.org/WAI/ARIA/apg/example-index/treeview/treeview-navigation", "title": "WAI-ARIA Authoring Practices: TreeView Example" } }, { "link": { "source": "https://www.w3.org/WAI/ARIA/apg/example-index/combobox/combobox-select-only.html", "title": "WAI-ARIA Authoring Practices: Select-Only Combobox Example" } }, { "link": { "source": "https://www.w3.org/WAI/ARIA/apg/patterns/combobox/", "title": "WAI-ARIA Authoring Practices: Combobox Pattern " } }, { "link": { "source": "https://www.w3.org/WAI/ARIA/apg/patterns/combobox/examples/combobox-select-only/", "title": "WAI-ARIA Authoring Practices: Select-Only Combobox" } }, { "link": { "source": "https://www.w3.org/WAI/ARIA/apg/patterns/treeview/examples/treeview-navigation/", "title": "WAI-ARIA Authoring Practices: Navigation Treeview" } } ] } ]