AX: WebKit does not exclude ::before/::after pseudo-elements from AX API when @aria-modal is used

• Component: Accessibility
• Status: NEW ---

[James Craig]

Created attachment 305036 [details]
screen shot: VO cursor on gen content outside modal dialog

AX: WebKit does not exclude ::before/::after pseudo-elements from AX API when @aria-modal is used


1. Load: http://w3c.github.io/aria-practices/examples/dialog-modal/dialog.html
2. Press the "Add Delivery Address" button.
3. Stop interacting with the modal dialog.
4. Navigate to a bunch of random quotation marks.

In this case, the Q element <q>foo</q> renders its quotation marks as ::before/::after pseudo elements exposed by the render tree, not the DOM.

Note: test cases should include:

1. Default generated content like the quotation marks in <q>foo</q> 
2. Author-generated text content: div::before { content: "foo"; }
3. Author-generated alt content: div::after { content: url(img.png); alt: "alt"; }

[James Craig]

Test case #3 will change once bug 159022 is implemented.

[James Craig]

Created attachment 305037 [details]
screen shot: web inspector

[Radar WebKit Bug Importer]

<rdar://problem/31221250>