2.5.2: Pointer Cancellation [A]
- No Down-Event
- The down-event of the pointer is not used to execute any part of the function;
- Abort or Undo
- Completion of the function is on the up-event, and a mechanism is available to abort the function before completion or to undo the function after completion;
- Up Reversal
- The up-event reverses any outcome of the preceding down-event;
- Completing the function on the down-event is essential.
Functions that emulate a keyboard or numeric keypad key press are considered essential.
This requirement applies to web content that interprets pointer actions (i.e. this does not apply to actions that are required to operate the user agent or assistive technology).
Sufficient Techniques for Success Criterion 2.5.2
Note: Other techniques may also be sufficient if they meet the success criterion. See Understanding Techniques.
- G210: Ensuring that drag-and-drop actions can be cancelled
- G212: Using native controls to ensure functionality is triggered on the up-event.
- Touch events are only triggered when touch is removed from a control (Potential future technique)
Advisory Techniques for Success Criterion 2.5.3
- If an icon has no accompanying text, consider using its hover text as its accessible name (Potential future technique)