void
FocusManager::ProcessDOMFocus(nsINode* aTarget)
{
#ifdef A11Y_LOG
if (logging::IsEnabled(logging::eFocus))
logging::FocusNotificationTarget("process DOM focus", "Target", aTarget);
#endif
DocAccessible* document =
GetAccService()->GetDocAccessible(aTarget->OwnerDoc());
if (!document)
return;
Accessible* target = document->GetAccessibleEvenIfNotInMapOrContainer(aTarget);
if (target) {
// Check if still focused. Otherwise we can end up with storing the active
// item for control that isn't focused anymore.
nsINode* focusedNode = FocusedDOMNode();
if (!focusedNode)
return;
Accessible* DOMFocus =
document->GetAccessibleEvenIfNotInMapOrContainer(focusedNode);
if (target != DOMFocus)
return;
Accessible* activeItem = target->CurrentItem();
if (activeItem) {
mActiveItem = activeItem;
target = activeItem;
}
DispatchFocusEvent(document, target);
}
}
// RootAccessible protected
void
RootAccessible::ProcessDOMEvent(nsIDOMEvent* aDOMEvent)
{
MOZ_ASSERT(aDOMEvent);
Event* event = aDOMEvent->InternalDOMEvent();
nsCOMPtr<nsINode> origTargetNode = do_QueryInterface(event->GetOriginalTarget());
nsAutoString eventType;
aDOMEvent->GetType(eventType);
#ifdef A11Y_LOG
if (logging::IsEnabled(logging::eDOMEvents))
logging::DOMEvent("processed", origTargetNode, eventType);
#endif
if (eventType.EqualsLiteral("popuphiding")) {
HandlePopupHidingEvent(origTargetNode);
return;
}
DocAccessible* targetDocument = GetAccService()->
GetDocAccessible(origTargetNode->OwnerDoc());
NS_ASSERTION(targetDocument, "No document while accessible is in document?!");
Accessible* accessible =
targetDocument->GetAccessibleOrContainer(origTargetNode);
if (!accessible)
return;
#ifdef MOZ_XUL
XULTreeAccessible* treeAcc = accessible->AsXULTree();
if (treeAcc) {
if (eventType.EqualsLiteral("TreeRowCountChanged")) {
HandleTreeRowCountChangedEvent(aDOMEvent, treeAcc);
return;
}
if (eventType.EqualsLiteral("TreeInvalidated")) {
HandleTreeInvalidatedEvent(aDOMEvent, treeAcc);
return;
}
}
#endif
if (eventType.EqualsLiteral("RadioStateChange")) {
uint64_t state = accessible->State();
bool isEnabled = (state & (states::CHECKED | states::SELECTED)) != 0;
if (accessible->NeedsDOMUIEvent()) {
nsRefPtr<AccEvent> accEvent =
new AccStateChangeEvent(accessible, states::CHECKED, isEnabled);
nsEventShell::FireEvent(accEvent);
}
if (isEnabled) {
FocusMgr()->ActiveItemChanged(accessible);
#ifdef A11Y_LOG
if (logging::IsEnabled(logging::eFocus))
logging::ActiveItemChangeCausedBy("RadioStateChange", accessible);
#endif
}
return;
}
if (eventType.EqualsLiteral("CheckboxStateChange")) {
if (accessible->NeedsDOMUIEvent()) {
uint64_t state = accessible->State();
bool isEnabled = !!(state & states::CHECKED);
nsRefPtr<AccEvent> accEvent =
new AccStateChangeEvent(accessible, states::CHECKED, isEnabled);
nsEventShell::FireEvent(accEvent);
}
return;
}
Accessible* treeItemAcc = nullptr;
#ifdef MOZ_XUL
// If it's a tree element, need the currently selected item.
if (treeAcc) {
treeItemAcc = accessible->CurrentItem();
if (treeItemAcc)
accessible = treeItemAcc;
}
if (treeItemAcc && eventType.EqualsLiteral("OpenStateChange")) {
uint64_t state = accessible->State();
bool isEnabled = (state & states::EXPANDED) != 0;
nsRefPtr<AccEvent> accEvent =
new AccStateChangeEvent(accessible, states::EXPANDED, isEnabled);
nsEventShell::FireEvent(accEvent);
return;
}
nsINode* targetNode = accessible->GetNode();
if (treeItemAcc && eventType.EqualsLiteral("select")) {
// XXX: We shouldn't be based on DOM select event which doesn't provide us
// any context info. We should integrate into nsTreeSelection instead.
// If multiselect tree, we should fire selectionadd or selection removed
if (FocusMgr()->HasDOMFocus(targetNode)) {
nsCOMPtr<nsIDOMXULMultiSelectControlElement> multiSel =
do_QueryInterface(targetNode);
nsAutoString selType;
multiSel->GetSelType(selType);
if (selType.IsEmpty() || !selType.EqualsLiteral("single")) {
// XXX: We need to fire EVENT_SELECTION_ADD and EVENT_SELECTION_REMOVE
// for each tree item. Perhaps each tree item will need to cache its
// selection state and fire an event after a DOM "select" event when
// that state changes. XULTreeAccessible::UpdateTreeSelection();
nsEventShell::FireEvent(nsIAccessibleEvent::EVENT_SELECTION_WITHIN,
accessible);
return;
}
nsRefPtr<AccSelChangeEvent> selChangeEvent =
new AccSelChangeEvent(treeAcc, treeItemAcc,
AccSelChangeEvent::eSelectionAdd);
nsEventShell::FireEvent(selChangeEvent);
return;
}
}
else
#endif
if (eventType.EqualsLiteral("AlertActive")) {
nsEventShell::FireEvent(nsIAccessibleEvent::EVENT_ALERT, accessible);
}
else if (eventType.EqualsLiteral("popupshown")) {
HandlePopupShownEvent(accessible);
}
else if (eventType.EqualsLiteral("DOMMenuInactive")) {
if (accessible->Role() == roles::MENUPOPUP) {
nsEventShell::FireEvent(nsIAccessibleEvent::EVENT_MENUPOPUP_END,
accessible);
}
}
else if (eventType.EqualsLiteral("DOMMenuItemActive")) {
FocusMgr()->ActiveItemChanged(accessible);
#ifdef A11Y_LOG
if (logging::IsEnabled(logging::eFocus))
logging::ActiveItemChangeCausedBy("DOMMenuItemActive", accessible);
#endif
}
else if (eventType.EqualsLiteral("DOMMenuItemInactive")) {
// Process DOMMenuItemInactive event for autocomplete only because this is
// unique widget that may acquire focus from autocomplete popup while popup
// stays open and has no active item. In case of XUL tree autocomplete
// popup this event is fired for tree accessible.
Accessible* widget =
accessible->IsWidget() ? accessible : accessible->ContainerWidget();
if (widget && widget->IsAutoCompletePopup()) {
FocusMgr()->ActiveItemChanged(nullptr);
#ifdef A11Y_LOG
if (logging::IsEnabled(logging::eFocus))
logging::ActiveItemChangeCausedBy("DOMMenuItemInactive", accessible);
#endif
}
}
else if (eventType.EqualsLiteral("DOMMenuBarActive")) { // Always from user input
nsEventShell::FireEvent(nsIAccessibleEvent::EVENT_MENU_START,
accessible, eFromUserInput);
// Notify of active item change when menubar gets active and if it has
// current item. This is a case of mouseover (set current menuitem) and
// mouse click (activate the menubar). If menubar doesn't have current item
// (can be a case of menubar activation from keyboard) then ignore this
// notification because later we'll receive DOMMenuItemActive event after
// current menuitem is set.
Accessible* activeItem = accessible->CurrentItem();
if (activeItem) {
FocusMgr()->ActiveItemChanged(activeItem);
#ifdef A11Y_LOG
if (logging::IsEnabled(logging::eFocus))
logging::ActiveItemChangeCausedBy("DOMMenuBarActive", accessible);
#endif
}
}
else if (eventType.EqualsLiteral("DOMMenuBarInactive")) { // Always from user input
nsEventShell::FireEvent(nsIAccessibleEvent::EVENT_MENU_END,
accessible, eFromUserInput);
FocusMgr()->ActiveItemChanged(nullptr);
#ifdef A11Y_LOG
if (logging::IsEnabled(logging::eFocus))
logging::ActiveItemChangeCausedBy("DOMMenuBarInactive", accessible);
#endif
}
else if (accessible->NeedsDOMUIEvent() &&
eventType.EqualsLiteral("ValueChange")) {
targetDocument->FireDelayedEvent(nsIAccessibleEvent::EVENT_VALUE_CHANGE,
accessible);
}
#ifdef DEBUG_DRAGDROPSTART
else if (eventType.EqualsLiteral("mouseover")) {
nsEventShell::FireEvent(nsIAccessibleEvent::EVENT_DRAGDROP_START,
accessible);
}
#endif
}
void
FocusManager::ProcessFocusEvent(AccEvent* aEvent)
{
NS_PRECONDITION(aEvent->GetEventType() == nsIAccessibleEvent::EVENT_FOCUS,
"Focus event is expected!");
// Emit focus event if event target is the active item. Otherwise then check
// if it's still focused and then update active item and emit focus event.
Accessible* target = aEvent->GetAccessible();
if (target != mActiveItem) {
// Check if still focused. Otherwise we can end up with storing the active
// item for control that isn't focused anymore.
DocAccessible* document = aEvent->GetDocAccessible();
nsINode* focusedNode = FocusedDOMNode();
if (!focusedNode)
return;
Accessible* DOMFocus =
document->GetAccessibleEvenIfNotInMapOrContainer(focusedNode);
if (target != DOMFocus)
return;
Accessible* activeItem = target->CurrentItem();
if (activeItem) {
mActiveItem = activeItem;
target = activeItem;
}
}
// Fire menu start/end events for ARIA menus.
if (target->IsARIARole(nsGkAtoms::menuitem)) {
// The focus was moved into menu.
Accessible* ARIAMenubar = nullptr;
for (Accessible* parent = target->Parent(); parent; parent = parent->Parent()) {
if (parent->IsARIARole(nsGkAtoms::menubar)) {
ARIAMenubar = parent;
break;
}
// Go up in the parent chain of the menu hierarchy.
if (!parent->IsARIARole(nsGkAtoms::menuitem) &&
!parent->IsARIARole(nsGkAtoms::menu)) {
break;
}
}
if (ARIAMenubar != mActiveARIAMenubar) {
// Leaving ARIA menu. Fire menu_end event on current menubar.
if (mActiveARIAMenubar) {
RefPtr<AccEvent> menuEndEvent =
new AccEvent(nsIAccessibleEvent::EVENT_MENU_END, mActiveARIAMenubar,
aEvent->FromUserInput());
nsEventShell::FireEvent(menuEndEvent);
}
mActiveARIAMenubar = ARIAMenubar;
// Entering ARIA menu. Fire menu_start event.
if (mActiveARIAMenubar) {
RefPtr<AccEvent> menuStartEvent =
new AccEvent(nsIAccessibleEvent::EVENT_MENU_START,
mActiveARIAMenubar, aEvent->FromUserInput());
nsEventShell::FireEvent(menuStartEvent);
}
}
} else if (mActiveARIAMenubar) {
// Focus left a menu. Fire menu_end event.
RefPtr<AccEvent> menuEndEvent =
new AccEvent(nsIAccessibleEvent::EVENT_MENU_END, mActiveARIAMenubar,
aEvent->FromUserInput());
nsEventShell::FireEvent(menuEndEvent);
mActiveARIAMenubar = nullptr;
}
#ifdef A11Y_LOG
if (logging::IsEnabled(logging::eFocus))
logging::FocusNotificationTarget("fire focus event", "Target", target);
#endif
// Reset cached caret value. The cache will be updated upon processing the
// next caret move event. This ensures that we will return the correct caret
// offset before the caret move event is handled.
SelectionMgr()->ResetCaretOffset();
RefPtr<AccEvent> focusEvent =
new AccEvent(nsIAccessibleEvent::EVENT_FOCUS, target, aEvent->FromUserInput());
nsEventShell::FireEvent(focusEvent);
// Fire scrolling_start event when the document receives the focus if it has
// an anchor jump. If an accessible within the document receive the focus
// then null out the anchor jump because it no longer applies.
DocAccessible* targetDocument = target->Document();
Accessible* anchorJump = targetDocument->AnchorJump();
if (anchorJump) {
if (target == targetDocument) {
// XXX: bug 625699, note in some cases the node could go away before we
// we receive focus event, for example if the node is removed from DOM.
nsEventShell::FireEvent(nsIAccessibleEvent::EVENT_SCROLLING_START,
anchorJump, aEvent->FromUserInput());
}
targetDocument->SetAnchorJump(nullptr);
}
}
void
FocusManager::ProcessFocusEvent(AccEvent* aEvent)
{
NS_PRECONDITION(aEvent->GetEventType() == nsIAccessibleEvent::EVENT_FOCUS,
"Focus event is expected!");
// Emit focus event if event target is the active item. Otherwise then check
// if it's still focused and then update active item and emit focus event.
Accessible* target = aEvent->GetAccessible();
if (target != mActiveItem) {
// Check if still focused. Otherwise we can end up with storing the active
// item for control that isn't focused anymore.
DocAccessible* document = aEvent->GetDocAccessible();
nsINode* focusedNode = FocusedDOMNode();
if (!focusedNode)
return;
Accessible* DOMFocus =
document->GetAccessibleEvenIfNotInMapOrContainer(focusedNode);
if (target != DOMFocus)
return;
Accessible* activeItem = target->CurrentItem();
if (activeItem) {
mActiveItem = activeItem;
target = activeItem;
}
}
// Fire menu start/end events for ARIA menus.
if (target->IsARIARole(nsGkAtoms::menuitem)) {
// The focus was moved into menu.
bool tryOwnsParent = true;
Accessible* ARIAMenubar = nullptr;
Accessible* child = target;
Accessible* parent = child->Parent();
while (parent) {
nsRoleMapEntry* roleMap = parent->ARIARoleMap();
if (roleMap) {
if (roleMap->Is(nsGkAtoms::menubar)) {
ARIAMenubar = parent;
break;
}
// Go up in the parent chain of the menu hierarchy.
if (roleMap->Is(nsGkAtoms::menuitem) || roleMap->Is(nsGkAtoms::menu)) {
child = parent;
parent = child->Parent();
tryOwnsParent = true;
continue;
}
}
// If no required context role then check aria-owns relation.
if (!tryOwnsParent)
break;
RelatedAccIterator iter(child->Document(), child->GetContent(),
nsGkAtoms::aria_owns);
parent = iter.Next();
tryOwnsParent = false;
}
if (ARIAMenubar != mActiveARIAMenubar) {
// Leaving ARIA menu. Fire menu_end event on current menubar.
if (mActiveARIAMenubar) {
nsRefPtr<AccEvent> menuEndEvent =
new AccEvent(nsIAccessibleEvent::EVENT_MENU_END, mActiveARIAMenubar,
aEvent->FromUserInput());
nsEventShell::FireEvent(menuEndEvent);
}
mActiveARIAMenubar = ARIAMenubar;
// Entering ARIA menu. Fire menu_start event.
if (mActiveARIAMenubar) {
nsRefPtr<AccEvent> menuStartEvent =
new AccEvent(nsIAccessibleEvent::EVENT_MENU_START,
mActiveARIAMenubar, aEvent->FromUserInput());
nsEventShell::FireEvent(menuStartEvent);
}
}
} else if (mActiveARIAMenubar) {
// Focus left a menu. Fire menu_end event.
nsRefPtr<AccEvent> menuEndEvent =
new AccEvent(nsIAccessibleEvent::EVENT_MENU_END, mActiveARIAMenubar,
aEvent->FromUserInput());
nsEventShell::FireEvent(menuEndEvent);
mActiveARIAMenubar = nullptr;
}
#ifdef A11Y_LOG
if (logging::IsEnabled(logging::eFocus))
logging::FocusNotificationTarget("fire focus event", "Target", target);
#endif
nsRefPtr<AccEvent> focusEvent =
new AccEvent(nsIAccessibleEvent::EVENT_FOCUS, target, aEvent->FromUserInput());
nsEventShell::FireEvent(focusEvent);
// Fire scrolling_start event when the document receives the focus if it has
// an anchor jump. If an accessible within the document receive the focus
// then null out the anchor jump because it no longer applies.
DocAccessible* targetDocument = target->Document();
Accessible* anchorJump = targetDocument->AnchorJump();
if (anchorJump) {
if (target == targetDocument) {
// XXX: bug 625699, note in some cases the node could go away before we
// we receive focus event, for example if the node is removed from DOM.
nsEventShell::FireEvent(nsIAccessibleEvent::EVENT_SCROLLING_START,
anchorJump, aEvent->FromUserInput());
}
targetDocument->SetAnchorJump(nullptr);
}
}