void
FocusManager::ActiveItemChanged(Accessible* aItem, bool aCheckIfActive)
{
#ifdef A11Y_LOG
if (logging::IsEnabled(logging::eFocus))
logging::FocusNotificationTarget("active item changed", "Item", aItem);
#endif
// Nothing changed, happens for XUL trees and HTML selects.
if (aItem && aItem == mActiveItem)
return;
mActiveItem = nullptr;
if (aItem && aCheckIfActive) {
Accessible* widget = aItem->ContainerWidget();
#ifdef A11Y_LOG
if (logging::IsEnabled(logging::eFocus))
logging::ActiveWidget(widget);
#endif
if (!widget || !widget->IsActiveWidget() || !widget->AreItemsOperable())
return;
}
mActiveItem = aItem;
// If active item is changed then fire accessible focus event on it, otherwise
// if there's no an active item then fire focus event to accessible having
// DOM focus.
Accessible* target = FocusedAccessible();
if (target)
DispatchFocusEvent(target->Document(), target);
}
void
RootAccessible::HandlePopupHidingEvent(nsINode* aPopupNode)
{
// Get popup accessible. There are cases when popup element isn't accessible
// but an underlying widget is and behaves like popup, an example is
// autocomplete popups.
DocAccessible* document = nsAccUtils::GetDocAccessibleFor(aPopupNode);
if (!document)
return;
Accessible* popup = document->GetAccessible(aPopupNode);
if (!popup) {
Accessible* popupContainer = document->GetContainerAccessible(aPopupNode);
if (!popupContainer)
return;
uint32_t childCount = popupContainer->ChildCount();
for (uint32_t idx = 0; idx < childCount; idx++) {
Accessible* child = popupContainer->GetChildAt(idx);
if (child->IsAutoCompletePopup()) {
popup = child;
break;
}
}
// No popup no events. Focus is managed by DOM. This is a case for
// menupopups of menus on Linux since there are no accessible for popups.
if (!popup)
return;
}
// In case of autocompletes and comboboxes fire state change event for
// expanded state. Note, HTML form autocomplete isn't a subject of state
// change event because they aren't autocompletes strictly speaking.
// When popup closes (except nested popups and menus) then fire focus event to
// where it was. The focus event is expected even if popup didn't take a focus.
static const uint32_t kNotifyOfFocus = 1;
static const uint32_t kNotifyOfState = 2;
uint32_t notifyOf = 0;
// HTML select is target of popuphidding event. Otherwise get container
// widget. No container widget means this is either tooltip or menupopup.
// No events in the former case.
Accessible* widget = nullptr;
if (popup->IsCombobox()) {
widget = popup;
} else {
widget = popup->ContainerWidget();
if (!widget) {
if (!popup->IsMenuPopup())
return;
widget = popup;
}
}
if (popup->IsAutoCompletePopup()) {
// No focus event for autocomplete because it's managed by
// DOMMenuItemInactive events.
if (widget->IsAutoComplete())
notifyOf = kNotifyOfState;
} else if (widget->IsCombobox()) {
// Fire focus for active combobox, otherwise the focus is managed by DOM
// focus notifications. Always fire state change event.
if (widget->IsActiveWidget())
notifyOf = kNotifyOfFocus;
notifyOf |= kNotifyOfState;
} else if (widget->IsMenuButton()) {
// Can be a part of autocomplete.
Accessible* compositeWidget = widget->ContainerWidget();
if (compositeWidget && compositeWidget->IsAutoComplete()) {
widget = compositeWidget;
notifyOf = kNotifyOfState;
}
// Autocomplete (like searchbar) can be inactive when popup hiddens
notifyOf |= kNotifyOfFocus;
} else if (widget == popup) {
// Top level context menus and alerts.
// Ignore submenus and menubar. When submenu is closed then sumbenu
// container menuitem takes a focus via DOMMenuItemActive notification.
// For menubars processing we listen DOMMenubarActive/Inactive
// notifications.
notifyOf = kNotifyOfFocus;
}
// Restore focus to where it was.
if (notifyOf & kNotifyOfFocus) {
FocusMgr()->ActiveItemChanged(nullptr);
#ifdef A11Y_LOG
if (logging::IsEnabled(logging::eFocus))
logging::ActiveItemChangeCausedBy("popuphiding", popup);
#endif
}
// Fire expanded state change event.
if (notifyOf & kNotifyOfState) {
nsRefPtr<AccEvent> event =
new AccStateChangeEvent(widget, states::EXPANDED, false);
document->FireDelayedEvent(event);
}
}