nsresult
nsTextEquivUtils::AppendTextEquivFromContent(nsAccessible *aInitiatorAcc,
nsIContent *aContent,
nsAString *aString)
{
// Prevent recursion which can cause infinite loops.
if (gInitiatorAcc)
return NS_OK;
gInitiatorAcc = aInitiatorAcc;
// If the given content is not visible or isn't accessible then go down
// through the DOM subtree otherwise go down through accessible subtree and
// calculate the flat string.
nsIFrame *frame = aContent->GetPrimaryFrame();
bool isVisible = frame && frame->GetStyleVisibility()->IsVisible();
nsresult rv = NS_ERROR_FAILURE;
bool goThroughDOMSubtree = true;
if (isVisible) {
nsAccessible* accessible =
gInitiatorAcc->Document()->GetAccessible(aContent);
if (accessible) {
rv = AppendFromAccessible(accessible, aString);
goThroughDOMSubtree = false;
}
}
if (goThroughDOMSubtree)
rv = AppendFromDOMNode(aContent, aString);
gInitiatorAcc = nsnull;
return rv;
}
nsresult
nsTextEquivUtils::AppendFromAccessibleChildren(nsAccessible *aAccessible,
nsAString *aString)
{
nsresult rv = NS_OK_NO_NAME_CLAUSE_HANDLED;
PRInt32 childCount = aAccessible->GetChildCount();
for (PRInt32 childIdx = 0; childIdx < childCount; childIdx++) {
nsAccessible *child = aAccessible->GetChildAt(childIdx);
rv = AppendFromAccessible(child, aString);
NS_ENSURE_SUCCESS(rv, rv);
}
return rv;
}
nsresult
nsTextEquivUtils::AppendFromAccessibleChildren(nsIAccessible *aAccessible,
nsAString *aString)
{
nsCOMPtr<nsIAccessible> accChild, accNextChild;
aAccessible->GetFirstChild(getter_AddRefs(accChild));
nsresult rv = NS_OK_NO_NAME_CLAUSE_HANDLED;
while (accChild) {
rv = AppendFromAccessible(accChild, aString);
NS_ENSURE_SUCCESS(rv, rv);
accChild->GetNextSibling(getter_AddRefs(accNextChild));
accChild.swap(accNextChild);
}
return rv;
}
nsresult
nsTextEquivUtils::AppendTextEquivFromContent(nsIAccessible *aInitiatorAcc,
nsIContent *aContent,
nsAString *aString)
{
// Prevent recursion which can cause infinite loops.
if (gInitiatorAcc)
return NS_OK;
gInitiatorAcc = aInitiatorAcc;
nsCOMPtr<nsIDOMNode> DOMNode(do_QueryInterface(aContent));
nsCOMPtr<nsIPresShell> shell = nsCoreUtils::GetPresShellFor(DOMNode);
if (!shell) {
NS_ASSERTION(PR_TRUE, "There is no presshell!");
gInitiatorAcc = nsnull;
return NS_ERROR_UNEXPECTED;
}
// If the given content is not visible or isn't accessible then go down
// through the DOM subtree otherwise go down through accessible subtree and
// calculate the flat string.
nsIFrame *frame = aContent->GetPrimaryFrame();
PRBool isVisible = frame && frame->GetStyleVisibility()->IsVisible();
nsresult rv = NS_ERROR_FAILURE;
PRBool goThroughDOMSubtree = PR_TRUE;
if (isVisible) {
nsAccessible *accessible =
GetAccService()->GetAccessibleInShell(DOMNode, shell);
if (accessible) {
rv = AppendFromAccessible(accessible, aString);
goThroughDOMSubtree = PR_FALSE;
}
}
if (goThroughDOMSubtree)
rv = AppendFromDOMNode(aContent, aString);
gInitiatorAcc = nsnull;
return rv;
}
