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Bug 476404 - [SeaMonkey] New a11y test_relations.xul fails, r=marcoz, davidb, sr=neil

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This commit is contained in:
Alexander Surkov 2009-02-27 18:47:15 +08:00
parent 90867e105a
commit b80187d3a7
1 changed files with 7 additions and 0 deletions
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7
accessible/src/base/nsRootAccessible.cpp
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@ -992,7 +992,14 @@ nsRootAccessible::GetContentDocShell(nsIDocShellTreeItem *aStart)
if (itemType == nsIDocShellTreeItem::typeContent) {
nsCOMPtr<nsIAccessibleDocument> accDoc =
GetDocAccessibleFor(aStart, PR_TRUE);
// Hidden documents don't have accessibles (like SeaMonkey's sidebar),
// they are of no interest for a11y.
if (!accDoc)
return nsnull;
nsCOMPtr<nsIAccessible> accessible = do_QueryInterface(accDoc);
// If ancestor chain of accessibles is not completely visible,
// don't use this one. This happens for example if it's inside
// a background tab (tabbed browsing)