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fix(docs): screen readers aren't the only kind of assistive technology (#4349)

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The docs incorrectly implied that screen readers were the only assistive technology to do filtering on the tree.
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Joel Einbinder 2019-04-26 13:40:08 -07:00 committed by Andrey Lushnikov
parent 1e29e5bc0f
commit d64f700203
1 changed files with 2 additions and 2 deletions
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docs/api.md
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@ -2076,14 +2076,14 @@ Shortcut for [(await worker.executionContext()).evaluateHandle(pageFunction, ...
### class: Accessibility
The Accessibility class provides methods for inspecting Chromium's accessibility tree. The accessibility tree is used by assistive technology such as [screen readers](https://en.wikipedia.org/wiki/Screen_reader).
The Accessibility class provides methods for inspecting Chromium's accessibility tree. The accessibility tree is used by assistive technology such as [screen readers](https://en.wikipedia.org/wiki/Screen_reader) or [switches](https://en.wikipedia.org/wiki/Switch_access).
Accessibility is a very platform-specific thing. On different platforms, there are different screen readers that might have wildly different output.
Blink - Chrome's rendering engine - has a concept of "accessibility tree", which is than translated into different platform-specific APIs. Accessibility namespace gives users
access to the Blink Accessibility Tree.
Most of the accessibility tree gets filtered out when converting from Blink AX Tree to Platform-specific AX-Tree or by screen readers themselves. By default, Puppeteer tries to approximate this filtering, exposing only the "interesting" nodes of the tree.
Most of the accessibility tree gets filtered out when converting from Blink AX Tree to Platform-specific AX-Tree or by assistive technologies themselves. By default, Puppeteer tries to approximate this filtering, exposing only the "interesting" nodes of the tree.