nsresult
nsTextEquivUtils::AppendFromAccessible(nsIAccessible *aAccessible,
nsAString *aString)
{
nsCOMPtr<nsIAccessNode> accessNode(do_QueryInterface(aAccessible));
nsCOMPtr<nsIDOMNode> DOMNode;
accessNode->GetDOMNode(getter_AddRefs(DOMNode));
nsCOMPtr<nsIContent> content(do_QueryInterface(DOMNode));
NS_ASSERTION(content, "There is no content!");
if (content) {
nsresult rv = AppendTextEquivFromTextContent(content, aString);
if (rv != NS_OK_NO_NAME_CLAUSE_HANDLED)
return rv;
}
nsAutoString text;
nsresult rv = aAccessible->GetName(text);
NS_ENSURE_SUCCESS(rv, rv);
PRBool isEmptyTextEquiv = PR_TRUE;
// If the name is from tooltip then append it to result string in the end
// (see h. step of name computation guide).
if (rv != NS_OK_NAME_FROM_TOOLTIP)
isEmptyTextEquiv = !AppendString(aString, text);
// Implementation of f. step.
rv = AppendFromValue(aAccessible, aString);
NS_ENSURE_SUCCESS(rv, rv);
if (rv != NS_OK_NO_NAME_CLAUSE_HANDLED)
isEmptyTextEquiv = PR_FALSE;
// Implementation of g) step of text equivalent computation guide. Go down
// into subtree if accessible allows "text equivalent from subtree rule" or
// it's not root and not control.
if (isEmptyTextEquiv) {
PRUint32 role = nsAccUtils::Role(aAccessible);
PRUint32 nameRule = gRoleToNameRulesMap[role];
if (nameRule & eFromSubtreeIfRec) {
rv = AppendFromAccessibleChildren(aAccessible, aString);
NS_ENSURE_SUCCESS(rv, rv);
if (rv != NS_OK_NO_NAME_CLAUSE_HANDLED)
isEmptyTextEquiv = PR_FALSE;
}
}
// Implementation of h. step
if (isEmptyTextEquiv && !text.IsEmpty()) {
AppendString(aString, text);
return NS_OK;
}
return rv;
}
nsresult
nsTextEquivUtils::AppendFromAccessible(nsAccessible *aAccessible,
nsAString *aString)
{
//XXX: is it necessary to care the accessible is not a document?
if (aAccessible->IsContent()) {
nsresult rv = AppendTextEquivFromTextContent(aAccessible->GetContent(),
aString);
if (rv != NS_OK_NO_NAME_CLAUSE_HANDLED)
return rv;
}
nsAutoString text;
nsresult rv = aAccessible->GetName(text);
NS_ENSURE_SUCCESS(rv, rv);
bool isEmptyTextEquiv = true;
// If the name is from tooltip then append it to result string in the end
// (see h. step of name computation guide).
if (rv != NS_OK_NAME_FROM_TOOLTIP)
isEmptyTextEquiv = !AppendString(aString, text);
// Implementation of f. step.
rv = AppendFromValue(aAccessible, aString);
NS_ENSURE_SUCCESS(rv, rv);
if (rv != NS_OK_NO_NAME_CLAUSE_HANDLED)
isEmptyTextEquiv = PR_FALSE;
// Implementation of g) step of text equivalent computation guide. Go down
// into subtree if accessible allows "text equivalent from subtree rule" or
// it's not root and not control.
if (isEmptyTextEquiv) {
PRUint32 nameRule = gRoleToNameRulesMap[aAccessible->Role()];
if (nameRule & eFromSubtreeIfRec) {
rv = AppendFromAccessibleChildren(aAccessible, aString);
NS_ENSURE_SUCCESS(rv, rv);
if (rv != NS_OK_NO_NAME_CLAUSE_HANDLED)
isEmptyTextEquiv = PR_FALSE;
}
}
// Implementation of h. step
if (isEmptyTextEquiv && !text.IsEmpty()) {
AppendString(aString, text);
return NS_OK;
}
return rv;
}
