PRUint64
HTMLSelectOptionAccessible::NativeState()
{
// As a HTMLSelectOptionAccessible we can have the following states:
// SELECTABLE, SELECTED, FOCUSED, FOCUSABLE, OFFSCREEN
// Upcall to Accessible, but skip HyperTextAccessible impl
// because we don't want EDITABLE or SELECTABLE_TEXT
PRUint64 state = Accessible::NativeState();
Accessible* select = GetSelect();
if (!select)
return state;
PRUint64 selectState = select->State();
if (selectState & states::INVISIBLE)
return state;
// Are we selected?
bool isSelected = false;
nsCOMPtr<nsIDOMHTMLOptionElement> option(do_QueryInterface(mContent));
if (option) {
option->GetSelected(&isSelected);
if (isSelected)
state |= states::SELECTED;
}
if (selectState & states::OFFSCREEN) {
state |= states::OFFSCREEN;
}
else if (selectState & states::COLLAPSED) {
// <select> is COLLAPSED: add OFFSCREEN, if not the currently
// visible option
if (!isSelected) {
state |= states::OFFSCREEN;
}
else {
// Clear offscreen and invisible for currently showing option
state &= ~(states::OFFSCREEN | states::INVISIBLE);
state |= selectState & states::OPAQUE1;
}
}
else {
// XXX list frames are weird, don't rely on Accessible's general
// visibility implementation unless they get reimplemented in layout
state &= ~states::OFFSCREEN;
// <select> is not collapsed: compare bounds to calculate OFFSCREEN
Accessible* listAcc = Parent();
if (listAcc) {
PRInt32 optionX, optionY, optionWidth, optionHeight;
PRInt32 listX, listY, listWidth, listHeight;
GetBounds(&optionX, &optionY, &optionWidth, &optionHeight);
listAcc->GetBounds(&listX, &listY, &listWidth, &listHeight);
if (optionY < listY || optionY + optionHeight > listY + listHeight) {
state |= states::OFFSCREEN;
}
}
}
return state;
}
NS_IMETHODIMP
nsAccessiblePivot::MoveToPoint(nsIAccessibleTraversalRule* aRule,
int32_t aX, int32_t aY, bool aIgnoreNoMatch,
bool aIsFromUserInput, uint8_t aArgc,
bool* aResult)
{
NS_ENSURE_ARG_POINTER(aResult);
NS_ENSURE_ARG_POINTER(aRule);
*aResult = false;
Accessible* root = GetActiveRoot();
NS_ENSURE_TRUE(root && !root->IsDefunct(), NS_ERROR_NOT_IN_TREE);
RuleCache cache(aRule);
Accessible* match = nullptr;
Accessible* child = root->ChildAtPoint(aX, aY, Accessible::eDeepestChild);
while (child && root != child) {
uint16_t filtered = nsIAccessibleTraversalRule::FILTER_IGNORE;
nsresult rv = cache.ApplyFilter(child, &filtered);
NS_ENSURE_SUCCESS(rv, rv);
// Ignore any matching nodes that were below this one
if (filtered & nsIAccessibleTraversalRule::FILTER_IGNORE_SUBTREE)
match = nullptr;
// Match if no node below this is a match
if ((filtered & nsIAccessibleTraversalRule::FILTER_MATCH) && !match) {
int32_t childX, childY, childWidth, childHeight;
child->GetBounds(&childX, &childY, &childWidth, &childHeight);
// Double-check child's bounds since the deepest child may have been out
// of bounds. This assures we don't return a false positive.
if (aX >= childX && aX < childX + childWidth &&
aY >= childY && aY < childY + childHeight)
match = child;
}
child = child->Parent();
}
if (match || !aIgnoreNoMatch)
*aResult = MovePivotInternal(match, nsIAccessiblePivot::REASON_POINT,
(aArgc > 0) ? aIsFromUserInput : true);
return NS_OK;
}