nonclosable

Nonclosable is an adjective describing an element or item that cannot be closed by the user. In user interface design, this typically refers to dialogs, windows, or overlays for which the close action is intentionally disabled or removed. The term contrasts with closable or dismissible components, which can be closed by user input.

Contexts and examples

In UI design, nonclosable elements may be used for critical processes or information that requires user acknowledgment or completion before proceeding, such as ongoing installations, security warnings with mandated confirmations, or splash screens that must be viewed before access. They are generally intended to prevent accidental dismissal and to ensure the user encounters essential content. In some cases, nonclosable behavior is implemented temporarily, for example during a long-running operation, after which the element becomes closable.

Design and usability considerations

Nonclosable interfaces can hinder usability and accessibility if overused or implemented without clear justification. When a component is nonclosable, it is important to provide a legitimate path to completion or exit, such as a required action that unlocks standard controls, transparent progress feedback, and accessible messaging. Consider focus management, keyboard navigation, and screen reader support to avoid trapping users. If a nonclosable state is used, it should be clearly communicated, and there should be an explicit, accessible way to fulfill the required action.

Implementation notes

In software libraries, a nonclosable component is often achieved by omitting a close control and by preventing standard dismissal methods (overlay clicks, Escape key). Designers should document the behavior and ensure consistent behavior across platforms. Terminology varies; some systems call the property closable or dismissible, with nonclosable indicating the opposite.