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gecko-dev/accessible/generic/RootAccessible.cpp

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/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
/* This Source Code Form is subject to the terms of the Mozilla Public
* License, v. 2.0. If a copy of the MPL was not distributed with this
* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
#include "RootAccessible.h"
#include "mozilla/ArrayUtils.h"
#include "mozilla/PresShell.h" // for nsAccUtils::GetDocAccessibleFor()
#define CreateEvent CreateEventA
#include "LocalAccessible-inl.h"
#include "DocAccessible-inl.h"
#include "mozilla/a11y/DocAccessibleParent.h"
#include "nsAccessibilityService.h"
#include "nsAccUtils.h"
#include "nsCoreUtils.h"
#include "nsEventShell.h"
#include "Relation.h"
#include "Role.h"
#include "States.h"
#include "XULTreeAccessible.h"
#include "mozilla/dom/BindingUtils.h"
#include "mozilla/dom/CustomEvent.h"
#include "mozilla/dom/Element.h"
#include "mozilla/dom/ScriptSettings.h"
#include "mozilla/dom/BrowserHost.h"
#include "nsIDocShellTreeOwner.h"
#include "mozilla/dom/Event.h"
#include "mozilla/dom/EventTarget.h"
#include "nsIDOMXULMultSelectCntrlEl.h"
#include "mozilla/dom/Document.h"
#include "nsIInterfaceRequestorUtils.h"
#include "nsIPropertyBag2.h"
#include "nsPIDOMWindow.h"
#include "nsIWebBrowserChrome.h"
#include "nsReadableUtils.h"
#include "nsFocusManager.h"
#include "nsGlobalWindow.h"
#include "nsIAppWindow.h"
using namespace mozilla;
using namespace mozilla::a11y;
using namespace mozilla::dom;
////////////////////////////////////////////////////////////////////////////////
// nsISupports
NS_IMPL_ISUPPORTS_INHERITED(RootAccessible, DocAccessible, nsIDOMEventListener)
////////////////////////////////////////////////////////////////////////////////
// Constructor/destructor
RootAccessible::RootAccessible(Document* aDocument, PresShell* aPresShell)
: DocAccessibleWrap(aDocument, aPresShell) {
mType = eRootType;
}
RootAccessible::~RootAccessible() {}
////////////////////////////////////////////////////////////////////////////////
// LocalAccessible
ENameValueFlag RootAccessible::Name(nsString& aName) const {
aName.Truncate();
if (ARIARoleMap()) {
LocalAccessible::Name(aName);
if (!aName.IsEmpty()) return eNameOK;
}
mDocumentNode->GetTitle(aName);
return eNameOK;
}
// RootAccessible protected member
uint32_t RootAccessible::GetChromeFlags() const {
// Return the flag set for the top level window as defined
// by nsIWebBrowserChrome::CHROME_WINDOW_[FLAGNAME]
// Not simple: nsIAppWindow is not just a QI from nsIDOMWindow
nsCOMPtr<nsIDocShell> docShell = nsCoreUtils::GetDocShellFor(mDocumentNode);
NS_ENSURE_TRUE(docShell, 0);
nsCOMPtr<nsIDocShellTreeOwner> treeOwner;
docShell->GetTreeOwner(getter_AddRefs(treeOwner));
NS_ENSURE_TRUE(treeOwner, 0);
nsCOMPtr<nsIAppWindow> appWin(do_GetInterface(treeOwner));
if (!appWin) {
return 0;
}
uint32_t chromeFlags;
appWin->GetChromeFlags(&chromeFlags);
return chromeFlags;
}
uint64_t RootAccessible::NativeState() const {
uint64_t state = DocAccessibleWrap::NativeState();
if (state & states::DEFUNCT) return state;
uint32_t chromeFlags = GetChromeFlags();
if (chromeFlags & nsIWebBrowserChrome::CHROME_WINDOW_RESIZE) {
state |= states::SIZEABLE;
}
// If it has a titlebar it's movable
// XXX unless it's minimized or maximized, but not sure
// how to detect that
if (chromeFlags & nsIWebBrowserChrome::CHROME_TITLEBAR) {
state |= states::MOVEABLE;
}
if (chromeFlags & nsIWebBrowserChrome::CHROME_MODAL) state |= states::MODAL;
nsFocusManager* fm = nsFocusManager::GetFocusManager();
if (fm && fm->GetActiveWindow() == mDocumentNode->GetWindow()) {
state |= states::ACTIVE;
}
return state;
}
const char* const kEventTypes[] = {
#ifdef DEBUG_DRAGDROPSTART
// Capture mouse over events and fire fake DRAGDROPSTART event to simplify
// debugging a11y objects with event viewers.
"mouseover",
#endif
// Fired when list or tree selection changes.
"select",
// Fired when value changes immediately, wether or not focused changed.
"ValueChange", "AlertActive", "TreeRowCountChanged", "TreeInvalidated",
// add ourself as a OpenStateChange listener (custom event fired in
// tree.xml)
"OpenStateChange",
// add ourself as a CheckboxStateChange listener (custom event fired in
// HTMLInputElement.cpp)
"CheckboxStateChange",
// add ourself as a RadioStateChange Listener (custom event fired in in
// HTMLInputElement.cpp & radio.js)
"RadioStateChange", "popupshown", "popuphiding", "DOMMenuInactive",
"DOMMenuItemActive", "DOMMenuItemInactive", "DOMMenuBarActive",
"DOMMenuBarInactive", "scroll", "DOMTitleChanged"};
nsresult RootAccessible::AddEventListeners() {
// EventTarget interface allows to register event listeners to
// receive untrusted events (synthetic events generated by untrusted code).
// For example, XBL bindings implementations for elements that are hosted in
// non chrome document fire untrusted events.
// We must use the window's parent target in order to receive events from
// iframes and shadow DOM; e.g. ValueChange events from a <select> in an
// iframe or shadow DOM. The root document itself doesn't receive these.
nsPIDOMWindowOuter* window = mDocumentNode->GetWindow();
nsCOMPtr<EventTarget> nstarget = window ? window->GetParentTarget() : nullptr;
if (nstarget) {
for (const char *const *e = kEventTypes, *const *e_end =
ArrayEnd(kEventTypes);
e < e_end; ++e) {
nsresult rv = nstarget->AddEventListener(NS_ConvertASCIItoUTF16(*e), this,
true, true);
NS_ENSURE_SUCCESS(rv, rv);
}
}
return DocAccessible::AddEventListeners();
}
nsresult RootAccessible::RemoveEventListeners() {
nsPIDOMWindowOuter* window = mDocumentNode->GetWindow();
nsCOMPtr<EventTarget> target = window ? window->GetParentTarget() : nullptr;
if (target) {
for (const char *const *e = kEventTypes, *const *e_end =
ArrayEnd(kEventTypes);
e < e_end; ++e) {
target->RemoveEventListener(NS_ConvertASCIItoUTF16(*e), this, true);
}
}
// Do this before removing clearing caret accessible, so that it can use
// shutdown the caret accessible's selection listener
DocAccessible::RemoveEventListeners();
return NS_OK;
}
////////////////////////////////////////////////////////////////////////////////
// public
void RootAccessible::DocumentActivated(DocAccessible* aDocument) {}
////////////////////////////////////////////////////////////////////////////////
// nsIDOMEventListener
NS_IMETHODIMP
RootAccessible::HandleEvent(Event* aDOMEvent) {
MOZ_ASSERT(aDOMEvent);
if (IsDefunct()) {
// Even though we've been shut down, RemoveEventListeners might not have
// removed the event handlers on the window's parent target if GetWindow
// returned null, so we might still get events here in this case. We should
// just ignore these events.
return NS_OK;
}
nsCOMPtr<nsINode> origTargetNode =
do_QueryInterface(aDOMEvent->GetOriginalTarget());
if (!origTargetNode) return NS_OK;
#ifdef A11Y_LOG
if (logging::IsEnabled(logging::eDOMEvents)) {
nsAutoString eventType;
aDOMEvent->GetType(eventType);
logging::DOMEvent("handled", origTargetNode, eventType);
}
#endif
DocAccessible* document =
GetAccService()->GetDocAccessible(origTargetNode->OwnerDoc());
if (document) {
nsAutoString eventType;
aDOMEvent->GetType(eventType);
if (eventType.EqualsLiteral("scroll")) {
// We don't put this in the notification queue for 2 reasons:
// 1. We will flood the queue with repetitive events.
// 2. Since this doesn't necessarily touch layout, we are not
// guaranteed to have a WillRefresh tick any time soon.
document->HandleScroll(origTargetNode);
} else {
// Root accessible exists longer than any of its descendant documents so
// that we are guaranteed notification is processed before root accessible
// is destroyed.
// For shadow DOM, GetOriginalTarget on the Event returns null if we
// process the event async, so we must pass the target node as well.
document->HandleNotification<RootAccessible, Event, nsINode>(
this, &RootAccessible::ProcessDOMEvent, aDOMEvent, origTargetNode);
}
}
return NS_OK;
}
// RootAccessible protected
void RootAccessible::ProcessDOMEvent(Event* aDOMEvent, nsINode* aTarget) {
MOZ_ASSERT(aDOMEvent);
MOZ_ASSERT(aTarget);
nsAutoString eventType;
aDOMEvent->GetType(eventType);
#ifdef A11Y_LOG
if (logging::IsEnabled(logging::eDOMEvents)) {
logging::DOMEvent("processed", aTarget, eventType);
}
#endif
if (eventType.EqualsLiteral("popuphiding")) {
HandlePopupHidingEvent(aTarget);
return;
}
DocAccessible* targetDocument =
GetAccService()->GetDocAccessible(aTarget->OwnerDoc());
if (!targetDocument) {
// Document has ceased to exist.
return;
}
if (eventType.EqualsLiteral("popupshown") &&
(aTarget->IsXULElement(nsGkAtoms::tooltip) ||
aTarget->IsXULElement(nsGkAtoms::panel))) {
targetDocument->ContentInserted(aTarget->AsContent(),
aTarget->GetNextSibling());
return;
}
LocalAccessible* accessible =
targetDocument->GetAccessibleOrContainer(aTarget);
if (!accessible) return;
if (accessible->IsDoc() && eventType.EqualsLiteral("DOMTitleChanged")) {
targetDocument->FireDelayedEvent(nsIAccessibleEvent::EVENT_NAME_CHANGE,
accessible);
return;
}
XULTreeAccessible* treeAcc = accessible->AsXULTree();
if (treeAcc) {
if (eventType.EqualsLiteral("TreeRowCountChanged")) {
HandleTreeRowCountChangedEvent(aDOMEvent, treeAcc);
return;
}
if (eventType.EqualsLiteral("TreeInvalidated")) {
HandleTreeInvalidatedEvent(aDOMEvent, treeAcc);
return;
}
}
if (eventType.EqualsLiteral("RadioStateChange")) {
uint64_t state = accessible->State();
bool isEnabled = (state & (states::CHECKED | states::SELECTED)) != 0;
if (accessible->NeedsDOMUIEvent()) {
RefPtr<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);
RefPtr<AccEvent> accEvent =
new AccStateChangeEvent(accessible, states::CHECKED, isEnabled);
nsEventShell::FireEvent(accEvent);
}
return;
}
LocalAccessible* treeItemAcc = nullptr;
// 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;
RefPtr<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 =
targetNode->AsElement()->AsXULMultiSelectControl();
if (!multiSel) {
// This shouldn't be possible. All XUL trees should have
// nsIDOMXULMultiSelectControlElement, and the tree is focused, so it
// shouldn't be dying. Nevertheless, this sometimes happens in the wild
// (bug 1597043).
MOZ_ASSERT_UNREACHABLE(
"XUL tree doesn't have nsIDOMXULMultiSelectControlElement");
return;
}
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;
}
RefPtr<AccSelChangeEvent> selChangeEvent = new AccSelChangeEvent(
treeAcc, treeItemAcc, AccSelChangeEvent::eSelectionAdd);
nsEventShell::FireEvent(selChangeEvent);
return;
}
} else 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")) {
RefPtr<AccEvent> event =
new AccStateChangeEvent(accessible, states::ACTIVE, true);
nsEventShell::FireEvent(event);
FocusMgr()->ActiveItemChanged(accessible);
#ifdef A11Y_LOG
if (logging::IsEnabled(logging::eFocus)) {
logging::ActiveItemChangeCausedBy("DOMMenuItemActive", accessible);
}
#endif
} else if (eventType.EqualsLiteral("DOMMenuItemInactive")) {
RefPtr<AccEvent> event =
new AccStateChangeEvent(accessible, states::ACTIVE, false);
nsEventShell::FireEvent(event);
// 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.
LocalAccessible* 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.
LocalAccessible* 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")) {
uint32_t event = accessible->HasNumericValue()
? nsIAccessibleEvent::EVENT_VALUE_CHANGE
: nsIAccessibleEvent::EVENT_TEXT_VALUE_CHANGE;
targetDocument->FireDelayedEvent(event, accessible);
}
#ifdef DEBUG_DRAGDROPSTART
else if (eventType.EqualsLiteral("mouseover")) {
nsEventShell::FireEvent(nsIAccessibleEvent::EVENT_DRAGDROP_START,
accessible);
}
#endif
}
////////////////////////////////////////////////////////////////////////////////
// LocalAccessible
void RootAccessible::Shutdown() {
// Called manually or by LocalAccessible::LastRelease()
if (HasShutdown()) {
return;
}
DocAccessibleWrap::Shutdown();
}
Relation RootAccessible::RelationByType(RelationType aType) const {
if (!mDocumentNode || aType != RelationType::EMBEDS) {
return DocAccessibleWrap::RelationByType(aType);
}
if (nsIDocShell* docShell = mDocumentNode->GetDocShell()) {
nsCOMPtr<nsIDocShellTreeOwner> owner;
docShell->GetTreeOwner(getter_AddRefs(owner));
if (owner) {
nsCOMPtr<nsIDocShellTreeItem> contentShell;
owner->GetPrimaryContentShell(getter_AddRefs(contentShell));
if (contentShell) {
return Relation(nsAccUtils::GetDocAccessibleFor(contentShell));
}
}
}
return Relation();
}
////////////////////////////////////////////////////////////////////////////////
// Protected members
void RootAccessible::HandlePopupShownEvent(LocalAccessible* aAccessible) {
roles::Role role = aAccessible->Role();
if (role == roles::MENUPOPUP) {
// Don't fire menupopup events for combobox and autocomplete lists.
nsEventShell::FireEvent(nsIAccessibleEvent::EVENT_MENUPOPUP_START,
aAccessible);
return;
}
if (role == roles::COMBOBOX_LIST) {
// Fire expanded state change event for comboboxes and autocompeletes.
LocalAccessible* combobox = aAccessible->LocalParent();
if (!combobox) return;
if (combobox->IsCombobox()) {
RefPtr<AccEvent> event =
new AccStateChangeEvent(combobox, states::EXPANDED, true);
nsEventShell::FireEvent(event);
}
// If aria-activedescendant is present, redirect focus.
// This is needed for parent process <select> dropdowns, which use a
// menulist containing div elements instead of XUL menuitems. XUL menuitems
// fire DOMMenuItemActive events from layout instead.
MOZ_ASSERT(aAccessible->Elm());
if (aAccessible->Elm()->HasAttr(kNameSpaceID_None,
nsGkAtoms::aria_activedescendant)) {
LocalAccessible* activeDescendant = aAccessible->CurrentItem();
if (activeDescendant) {
FocusMgr()->ActiveItemChanged(activeDescendant, false);
#ifdef A11Y_LOG
if (logging::IsEnabled(logging::eFocus)) {
logging::ActiveItemChangeCausedBy("ARIA activedescendant on popup",
activeDescendant);
}
#endif
}
}
}
}
void RootAccessible::HandlePopupHidingEvent(nsINode* aPopupNode) {
DocAccessible* document = nsAccUtils::GetDocAccessibleFor(aPopupNode);
if (!document) return;
if (aPopupNode->IsXULElement(nsGkAtoms::tooltip) ||
aPopupNode->IsXULElement(nsGkAtoms::panel)) {
document->ContentRemoved(aPopupNode->AsContent());
return;
}
// 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.
LocalAccessible* popup = document->GetAccessible(aPopupNode);
if (!popup) {
LocalAccessible* popupContainer =
document->GetContainerAccessible(aPopupNode);
if (!popupContainer) return;
uint32_t childCount = popupContainer->ChildCount();
for (uint32_t idx = 0; idx < childCount; idx++) {
LocalAccessible* child = popupContainer->LocalChildAt(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.
LocalAccessible* widget = nullptr;
if (popup->IsCombobox()) {
widget = popup;
} else {
widget = popup->ContainerWidget();
if (!widget) {
if (!popup->IsMenuPopup()) return;
widget = popup;
}
}
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()) {
// 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) {
RefPtr<AccEvent> event =
new AccStateChangeEvent(widget, states::EXPANDED, false);
document->FireDelayedEvent(event);
}
}
static void GetPropertyBagFromEvent(Event* aEvent,
nsIPropertyBag2** aPropertyBag) {
*aPropertyBag = nullptr;
CustomEvent* customEvent = aEvent->AsCustomEvent();
if (!customEvent) return;
AutoJSAPI jsapi;
if (!jsapi.Init(customEvent->GetParentObject())) return;
JSContext* cx = jsapi.cx();
JS::Rooted<JS::Value> detail(cx);
customEvent->GetDetail(cx, &detail);
if (!detail.isObject()) return;
JS::Rooted<JSObject*> detailObj(cx, &detail.toObject());
nsresult rv;
nsCOMPtr<nsIPropertyBag2> propBag;
rv = UnwrapArg<nsIPropertyBag2>(cx, detailObj, getter_AddRefs(propBag));
if (NS_FAILED(rv)) return;
propBag.forget(aPropertyBag);
}
void RootAccessible::HandleTreeRowCountChangedEvent(
Event* aEvent, XULTreeAccessible* aAccessible) {
nsCOMPtr<nsIPropertyBag2> propBag;
GetPropertyBagFromEvent(aEvent, getter_AddRefs(propBag));
if (!propBag) return;
nsresult rv;
int32_t index, count;
rv = propBag->GetPropertyAsInt32(u"index"_ns, &index);
if (NS_FAILED(rv)) return;
rv = propBag->GetPropertyAsInt32(u"count"_ns, &count);
if (NS_FAILED(rv)) return;
aAccessible->InvalidateCache(index, count);
}
void RootAccessible::HandleTreeInvalidatedEvent(
Event* aEvent, XULTreeAccessible* aAccessible) {
nsCOMPtr<nsIPropertyBag2> propBag;
GetPropertyBagFromEvent(aEvent, getter_AddRefs(propBag));
if (!propBag) return;
int32_t startRow = 0, endRow = -1, startCol = 0, endCol = -1;
propBag->GetPropertyAsInt32(u"startrow"_ns, &startRow);
propBag->GetPropertyAsInt32(u"endrow"_ns, &endRow);
propBag->GetPropertyAsInt32(u"startcolumn"_ns, &startCol);
propBag->GetPropertyAsInt32(u"endcolumn"_ns, &endCol);
aAccessible->TreeViewInvalidated(startRow, endRow, startCol, endCol);
}
RemoteAccessible* RootAccessible::GetPrimaryRemoteTopLevelContentDoc() const {
nsCOMPtr<nsIDocShellTreeOwner> owner;
mDocumentNode->GetDocShell()->GetTreeOwner(getter_AddRefs(owner));
NS_ENSURE_TRUE(owner, nullptr);
nsCOMPtr<nsIRemoteTab> remoteTab;
owner->GetPrimaryRemoteTab(getter_AddRefs(remoteTab));
if (!remoteTab) {
return nullptr;
}
auto tab = static_cast<dom::BrowserHost*>(remoteTab.get());
return tab->GetTopLevelDocAccessible();
}
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