Collapsible list: unlabeled accessible button, decorative image

What’s broken?

The button used to collapse/expand a collapsible list does not have an accessible name. The image it contains is not hidden from assistive technologies. As a result, the component is not vocalized and the user cannot identify the presence of a collapsible list in the document.

Impact

A blind user navigating with a screen reader cannot identify the collapsible list button. The component is unreachable: the user does not know that a collapsible list exists in the document and cannot interact with it.

What did you expect to happen?

The button must have an accessible name describing its action (for example "Collapse list" / "Expand list"). The decorative image contained in the button must be hidden from screen readers.

Steps to reproduce

Open a document containing a collapsible list in Docs.
Navigate with a screen reader.
Observe that the collapsible list button is not vocalized.

BlockNote version

0.51.1

Environment

No response

Additional context

No response

Contribution

• I'd be interested in contributing a fix for this issue

Sponsor

• I'm a sponsor and would appreciate if you could look into this sooner than later 💖

从 Docs 中使用的可折叠列表按钮入手，使用屏幕阅读器检查其当前的无障碍行为。为按钮提供特定于操作的可访问名称，例如“折叠列表”或“展开列表”，将其装饰性图像对辅助技术隐藏，并验证折叠和展开两种状态。