307734 - Some plugins result in truncated accessible page content

Status: RESOLVED FIXED

(Core :: Disability Access APIs, defect)

Description

[Aaron Leventhal]

Two problems with how we expose plugins:
1) Windowless plugins with MSAA content are not exposed
2) Gecko content after the plugin is getting cut off, because the plugin doesn't
point back into Gecko content for IAccessible::get_accNextSibling()

Comment 1

[Aaron Leventhal]

Attachment: 1) Have an object to own the native plugin placeholder accessible, which knows its place in the Gecko tree, 2) Only use first child window for plugin if it exists

Comment 2

[Johnny Stenback (:jst)]

Comment on attachment 195430 [details] [diff] [review]
1) Have an object to own the native plugin placeholder accessible, which knows its place in the Gecko tree, 2) Only use first child window for plugin if it exists

-In nsHTMLWin32ObjectOwnerAccessible::GetChildCount():

+  nsCOMPtr<nsIAccessible> onlyChild;
+  GetFirstChild(getter_AddRefs(onlyChild));
+  *aChildCount = (onlyChild != nsnull);

This does the right thing, but it's a bit odd to assign a boolean value into a
count (int) variable. Maybe change that to *aChildCount = (onlyChild == nsnull)
? 0 : 1; to make what's going on here a bit more explicit?

sr=jst

Comment 3

[Firefox Bug Husbandry Bot]

https://bugzilla.mozilla.org/show_bug.cgi?id=1527381