Some spec references: * cell role: https://w3c.github.io/aria/#cell * gridcell role: https://w3c.github.io/aria/#gridcell: > A gridcell can be focusable, editable, and selectable. A gridcell can have relationships such as aria-controls to address the application of functional relationships * Focusable: https://w3c.github.io/aria/#dfn-focusable https://html.spec.whatwg.org/multipage/interaction.html#focusable-area > An element or area matching the definition of focusable area in the HTML Specification. * aria-selected state: https://w3c.github.io/aria/#aria-selected > The option, tab, and treeitem roles permit user agents to provide an implicit value for aria-selected when specified conditions are met. *User agents MUST NOT provide an implicit value for aria-selected in any other circumstance.* > false: The selectable element is not selected. > true: The selectable element is selected. > undefined (default): The element is not selectable.
Bug 1730474 Comment 43 Edit History
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Some spec references: * cell role: https://w3c.github.io/aria/#cell * gridcell role: https://w3c.github.io/aria/#gridcell: > A gridcell can be focusable, editable, and selectable. A gridcell can have relationships such as aria-controls to address the application of functional relationships * Focusable: https://w3c.github.io/aria/#dfn-focusable https://html.spec.whatwg.org/multipage/interaction.html#focusable-area > An element or area matching the definition of focusable area in the HTML Specification. * aria-selected state: https://w3c.github.io/aria/#aria-selected > The option, tab, and treeitem roles permit user agents to provide an implicit value for aria-selected when specified conditions are met. *User agents MUST NOT provide an implicit value for aria-selected in any other circumstance.* > false: The selectable element is not selected. > true: The selectable element is selected. > undefined (default): The element is not selectable. * grid role: https://w3c.github.io/aria/#grid > Authors MAY indicate that a focusable gridcell is selectable as the object of an action with the aria-selected attribute.