Focus Error Codes

NOTE

This topic describes only module-specific error codes. For details about universal error codes, see Universal Error Codes.

150001 Component Not Focusable

Error Message

the component cannot be focused.

Description

This error code is reported when the current component is not focusable.

Possible Causes

The component is not focusable by default or has been configured through attribute methods such as focusable.

Solution

Check whether the current component is focusable and whether focusable is set to true.

Error Message

This component has an unfocusable ancestor.

Description

This error code is reported when an ancestor of the current component is not focusable.

Possible Causes

The ancestor component is not focusable by default or has been configured through attribute methods such as focusable.

Solution

Check whether the ancestor component is focusable and whether focusable is set to true.

Error Message

the component is not on tree or does not exist.

Description

This error code is reported when the provided ID points to a non-existent, detached, or invisible component.

Possible Causes

The provided ID is incorrect, or the component has been destroyed.
Focus is requested for a component that is not focusable. For details about such components, see Component Focusability.

Solution

Use the correct ID or component.