[ { "h2": "Accessibility Support" }, { "p": "Out of the box, the Telerik and Kendo UI ColumnMenu provides extensive accessibility support and enables users with disabilities to acquire complete control over its features." }, { "p": "The ColumnMenu 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": "The ColumnMenu Button/Header" }, { "table": { "headers": [ "Selector", "Attribute", "Usage" ], "rows": [ { "Selector": "`.k-grid-column-menu`", "Attribute": "`role=button`", "Usage": "Specifies that column menu element has role button." }, { "Selector": "", "Attribute": "`aria-haspopup=dialog`", "Usage": "Specifies that the button opens a dialog." }, { "Selector": "", "Attribute": "`aria-expanded=true/false`", "Usage": "Announces the current state of the popup." }, { "Selector": "", "Attribute": "`aria-controls=.k-popup.k-grid-columnmenu-popup id`", "Usage": "Points to the popup that the button toggles." }, { "Selector": "`.k-header:has(.k-grid-column-menu)`", "Attribute": "`aria-haspopup=dialog`", "Usage": "Specifies that the header cell opens a dialog." }, { "Selector": "", "Attribute": "`aria-expanded=true/false`", "Usage": "Announces the current state of the popup." }, { "Selector": "", "Attribute": "`aria-controls=.k-popup.k-grid-columnmenu-popup id`", "Usage": "Points to the popup that the button toggles." }, { "Selector": "", "Attribute": "`aria-keyshortcuts=Alt + ArrowDown`", "Usage": "Announces the available column-menu shortcut." } ] } }, { "h4": "The ColumnMenu Popup" }, { "table": { "headers": [ "Selector", "Attribute", "Usage" ], "rows": [ { "Selector": "`.k-popup.k-grid-columnmenu-popup`", "Attribute": "`id`", "Usage": "Unique and deterministic id linked to the button or header cell \"aria-controls\" attribute." }, { "Selector": "", "Attribute": "`role=dialog`", "Usage": "Sets the dialog role of the popup." }, { "Selector": "", "Attribute": "`aria-label`", "Usage": "Contains descriptive information about the column menu purpose - e.g. \"Column Title Column Menu\"" } ] } }, { "h4": "ColumnMenu Popup ExpandableContent" }, { "table": { "headers": [ "Selector", "Attribute", "Usage" ], "rows": [ { "Selector": "`.k-columnmenu-item`", "Attribute": "`role=button`", "Usage": "Sets column menu item role to button" }, { "Selector": "", "Attribute": "`tabindex=0`", "Usage": "Sets column menu item tabindex" }, { "Selector": "`.k-expander .k-columnmenu-item`", "Attribute": "`aria-expanded=true/false`", "Usage": "Sets the expanded state of an expandable item" }, { "Selector": "", "Attribute": "`aria-controls`", "Usage": "Points to id attribute of the content whose visibility the expandable item controls." }, { "Selector": "`.k-expander .k-columnmenu-item-content`", "Attribute": "`id`", "Usage": "Unique and deterministic id linked to the \"aria-controls\" attribute of the corresponding expandable item." }, { "Selector": "`.k-column-list`", "Attribute": "`role=listbox`", "Usage": "Sets the listbox role of the list of columns wrapper." }, { "Selector": "", "Attribute": "`aria-multiselectable=true`", "Usage": "Specifies that the list is multiselectable." }, { "Selector": "`.k-column-list .k-column-list-item`", "Attribute": "`role=option`", "Usage": "Sets the option role of the list item." }, { "Selector": "", "Attribute": "`aria-checked=true/false`", "Usage": "Sets the checked state of list item." }, { "Selector": "", "Attribute": "`tabindex=0/-1`", "Usage": "Sets the tabindex depending on the item's focused state." }, { "Selector": "`.k-column-list-item .k-checkbox`", "Attribute": "`tabindex=-1`", "Usage": "Removes the default focus behavior of the checkbox." }, { "Selector": "", "Attribute": "`aria-hidden=true`", "Usage": "Hides the checkbox from the assistive technologies, as its accessibility is implemented by the item wrapper." } ] } }, { "h4": "Other ColumnMenu Popup Content" }, { "p": "All internal elements and components follow their respective specification rules, and additionally have suitable \"aria-label\" attributes, describing what menu they are part of." }, { "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" }, { "table": { "headers": [ "Shortcut", "Behavior" ], "rows": [ { "Shortcut": "`Tab`", "Behavior": "Navigates to the next focusable element in the Popup. If current focus is on the last element, moves focus to the first focusable item in the Popup." }, { "Shortcut": "`Shift` + `Tab`", "Behavior": "Navigates to the previous focusable element in the Popup. If current focus is on the first element, moves focus to the last focusable item in the Popup." }, { "Shortcut": "`Enter`", "Behavior": "For column menu items, executes the currently focused item action. If item is expandable, expands or collapses the item." }, { "Shortcut": "`Escape`", "Behavior": "When focus is inside a focusable element in the item content, returns focus to the parent menu item. When focus is on a menu item, closes the ColumnMenu Popup and returns focus to the element from which the menu was opened." }, { "Shortcut": "`Down Arrow` & `Up Arrow`", "Behavior": "Moves the focus to the next/previous item when focus is in the ColumnChooser list of options." }, { "Shortcut": "`Space`", "Behavior": "Toggles the checked state of the focused ColumnChooser option." } ] } }, { "h4": "ActionSheet Popup" }, { "p": "In adaptive mode, the popup element of the ColumnMenu 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": "`Escape`", "Behavior": "When focus is inside a sub-view, returns to the main view and focuses the item that opened the sub-view. When focus is on the main view, closes the ActionSheet and returns focus to the element from which the menu was opened." } ] } }, { "blockquote": "All internal components follow their own keyboard navigation when focused." }, { "h3": "Testing" }, { "p": "The ColumnMenu 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 ColumnMenu 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://developer.mozilla.org/en-US/docs/Web/Accessibility/ARIA/Roles/dialog_role", "title": "MDN reference for the dialog role" } }, { "link": { "source": "https://www.w3.org/WAI/ARIA/apg/patterns/listbox/", "title": "ARIA Authoring Practices: Listbox Pattern" } } ] } ]