#include "config.h"
#if HAVE(ACCESSIBILITY)
#include "AXObjectCache.h"
#include "AccessibilityARIAGrid.h"
#include "AccessibilityARIAGridCell.h"
#include "AccessibilityARIAGridRow.h"
#include "AccessibilityImageMapLink.h"
#include "AccessibilityList.h"
#include "AccessibilityListBox.h"
#include "AccessibilityListBoxOption.h"
#include "AccessibilityMediaControls.h"
#include "AccessibilityMenuList.h"
#include "AccessibilityMenuListOption.h"
#include "AccessibilityMenuListPopup.h"
#include "AccessibilityProgressIndicator.h"
#include "AccessibilityRenderObject.h"
#include "AccessibilitySVGRoot.h"
#include "AccessibilityScrollView.h"
#include "AccessibilityScrollbar.h"
#include "AccessibilitySlider.h"
#include "AccessibilitySpinButton.h"
#include "AccessibilityTable.h"
#include "AccessibilityTableCell.h"
#include "AccessibilityTableColumn.h"
#include "AccessibilityTableHeaderContainer.h"
#include "AccessibilityTableRow.h"
#include "Document.h"
#include "Editor.h"
#include "ElementIterator.h"
#include "FocusController.h"
#include "Frame.h"
#include "HTMLAreaElement.h"
#include "HTMLCanvasElement.h"
#include "HTMLImageElement.h"
#include "HTMLInputElement.h"
#include "HTMLLabelElement.h"
#include "HTMLMeterElement.h"
#include "HTMLNames.h"
#include "Page.h"
#include "RenderListBox.h"
#include "RenderMenuList.h"
#include "RenderMeter.h"
#include "RenderProgress.h"
#include "RenderSVGRoot.h"
#include "RenderSlider.h"
#include "RenderTable.h"
#include "RenderTableCell.h"
#include "RenderTableRow.h"
#include "RenderView.h"
#include "ScrollView.h"
#include <wtf/PassRefPtr.h>
#if ENABLE(VIDEO)
#include "MediaControlElements.h"
#endif
namespace WebCore {
using namespace HTMLNames;
static double AccessibilityPasswordValueChangeNotificationInterval = 0.025;
static double AccessibilityLiveRegionChangedNotificationInterval = 0.020;
AccessibilityObjectInclusion AXComputedObjectAttributeCache::getIgnored(AXID id) const
{
HashMap<AXID, CachedAXObjectAttributes>::const_iterator it = m_idMapping.find(id);
return it != m_idMapping.end() ? it->value.ignored : DefaultBehavior;
}
void AXComputedObjectAttributeCache::setIgnored(AXID id, AccessibilityObjectInclusion inclusion)
{
HashMap<AXID, CachedAXObjectAttributes>::iterator it = m_idMapping.find(id);
if (it != m_idMapping.end())
it->value.ignored = inclusion;
else {
CachedAXObjectAttributes attributes;
attributes.ignored = inclusion;
m_idMapping.set(id, attributes);
}
}
bool AXObjectCache::gAccessibilityEnabled = false;
bool AXObjectCache::gAccessibilityEnhancedUserInterfaceEnabled = false;
void AXObjectCache::enableAccessibility()
{
gAccessibilityEnabled = true;
}
void AXObjectCache::disableAccessibility()
{
gAccessibilityEnabled = false;
}
void AXObjectCache::setEnhancedUserInterfaceAccessibility(bool flag)
{
gAccessibilityEnhancedUserInterfaceEnabled = flag;
}
AXObjectCache::AXObjectCache(Document& document)
: m_document(document)
, m_notificationPostTimer(*this, &AXObjectCache::notificationPostTimerFired)
, m_passwordNotificationPostTimer(*this, &AXObjectCache::passwordNotificationPostTimerFired)
, m_liveRegionChangedPostTimer(*this, &AXObjectCache::liveRegionChangedNotificationPostTimerFired)
{
}
AXObjectCache::~AXObjectCache()
{
m_notificationPostTimer.stop();
m_liveRegionChangedPostTimer.stop();
for (const auto& object : m_objects.values()) {
detachWrapper(object.get(), CacheDestroyed);
object->detach(CacheDestroyed);
removeAXID(object.get());
}
}
AccessibilityObject* AXObjectCache::focusedImageMapUIElement(HTMLAreaElement* areaElement)
{
if (!areaElement)
return nullptr;
HTMLImageElement* imageElement = areaElement->imageElement();
if (!imageElement)
return nullptr;
AccessibilityObject* axRenderImage = areaElement->document().axObjectCache()->getOrCreate(imageElement);
if (!axRenderImage)
return nullptr;
for (const auto& child : axRenderImage->children()) {
if (!is<AccessibilityImageMapLink>(*child))
continue;
if (downcast<AccessibilityImageMapLink>(*child).areaElement() == areaElement)
return child.get();
}
return nullptr;
}
AccessibilityObject* AXObjectCache::focusedUIElementForPage(const Page* page)
{
if (!gAccessibilityEnabled)
return nullptr;
Document* focusedDocument = page->focusController().focusedOrMainFrame().document();
Element* focusedElement = focusedDocument->focusedElement();
if (is<HTMLAreaElement>(focusedElement))
return focusedImageMapUIElement(downcast<HTMLAreaElement>(focusedElement));
AccessibilityObject* obj = focusedDocument->axObjectCache()->getOrCreate(focusedElement ? static_cast<Node*>(focusedElement) : focusedDocument);
if (!obj)
return nullptr;
if (obj->shouldFocusActiveDescendant()) {
if (AccessibilityObject* descendant = obj->activeDescendant())
obj = descendant;
}
if (obj->accessibilityIsIgnored())
obj = obj->parentObjectUnignored();
return obj;
}
AccessibilityObject* AXObjectCache::get(Widget* widget)
{
if (!widget)
return nullptr;
AXID axID = m_widgetObjectMapping.get(widget);
ASSERT(!HashTraits<AXID>::isDeletedValue(axID));
if (!axID)
return nullptr;
return m_objects.get(axID);
}
AccessibilityObject* AXObjectCache::get(RenderObject* renderer)
{
if (!renderer)
return nullptr;
AXID axID = m_renderObjectMapping.get(renderer);
ASSERT(!HashTraits<AXID>::isDeletedValue(axID));
if (!axID)
return nullptr;
return m_objects.get(axID);
}
AccessibilityObject* AXObjectCache::get(Node* node)
{
if (!node)
return nullptr;
AXID renderID = node->renderer() ? m_renderObjectMapping.get(node->renderer()) : 0;
ASSERT(!HashTraits<AXID>::isDeletedValue(renderID));
AXID nodeID = m_nodeObjectMapping.get(node);
ASSERT(!HashTraits<AXID>::isDeletedValue(nodeID));
if (node->renderer() && nodeID && !renderID) {
remove(nodeID);
return nullptr;
}
if (renderID)
return m_objects.get(renderID);
if (!nodeID)
return nullptr;
return m_objects.get(nodeID);
}
bool nodeHasRole(Node* node, const String& role)
{
if (!node || !is<Element>(node))
return false;
auto& roleValue = downcast<Element>(*node).fastGetAttribute(roleAttr);
if (role.isNull())
return roleValue.isEmpty();
if (roleValue.isEmpty())
return false;
return SpaceSplitString(roleValue, true).contains(role);
}
static Ref<AccessibilityObject> createFromRenderer(RenderObject* renderer)
{
Node* node = renderer->node();
if (node && ((nodeHasRole(node, "list") || nodeHasRole(node, "directory"))
|| (nodeHasRole(node, nullAtom) && (node->hasTagName(ulTag) || node->hasTagName(olTag) || node->hasTagName(dlTag)))))
return AccessibilityList::create(renderer);
if (nodeHasRole(node, "grid") || nodeHasRole(node, "treegrid"))
return AccessibilityARIAGrid::create(renderer);
if (nodeHasRole(node, "row"))
return AccessibilityARIAGridRow::create(renderer);
if (nodeHasRole(node, "gridcell") || nodeHasRole(node, "columnheader") || nodeHasRole(node, "rowheader"))
return AccessibilityARIAGridCell::create(renderer);
#if ENABLE(VIDEO)
if (node && node->isMediaControlElement())
return AccessibilityMediaControl::create(renderer);
#endif
if (is<RenderSVGRoot>(*renderer))
return AccessibilitySVGRoot::create(renderer);
if (is<RenderBoxModelObject>(*renderer)) {
RenderBoxModelObject& cssBox = downcast<RenderBoxModelObject>(*renderer);
if (is<RenderListBox>(cssBox))
return AccessibilityListBox::create(&downcast<RenderListBox>(cssBox));
if (is<RenderMenuList>(cssBox))
return AccessibilityMenuList::create(&downcast<RenderMenuList>(cssBox));
if (is<RenderTable>(cssBox))
return AccessibilityTable::create(&downcast<RenderTable>(cssBox));
if (is<RenderTableRow>(cssBox))
return AccessibilityTableRow::create(&downcast<RenderTableRow>(cssBox));
if (is<RenderTableCell>(cssBox))
return AccessibilityTableCell::create(&downcast<RenderTableCell>(cssBox));
if (is<RenderProgress>(cssBox))
return AccessibilityProgressIndicator::create(&downcast<RenderProgress>(cssBox));
#if ENABLE(METER_ELEMENT)
if (is<RenderMeter>(cssBox))
return AccessibilityProgressIndicator::create(&downcast<RenderMeter>(cssBox));
#endif
if (is<RenderSlider>(cssBox))
return AccessibilitySlider::create(&downcast<RenderSlider>(cssBox));
}
return AccessibilityRenderObject::create(renderer);
}
static Ref<AccessibilityObject> createFromNode(Node* node)
{
return AccessibilityNodeObject::create(node);
}
AccessibilityObject* AXObjectCache::getOrCreate(Widget* widget)
{
if (!widget)
return nullptr;
if (AccessibilityObject* obj = get(widget))
return obj;
RefPtr<AccessibilityObject> newObj;
if (is<ScrollView>(*widget))
newObj = AccessibilityScrollView::create(downcast<ScrollView>(widget));
else if (is<Scrollbar>(*widget))
newObj = AccessibilityScrollbar::create(downcast<Scrollbar>(widget));
ASSERT(!get(widget));
ASSERT(newObj);
if (!newObj)
return nullptr;
getAXID(newObj.get());
m_widgetObjectMapping.set(widget, newObj->axObjectID());
m_objects.set(newObj->axObjectID(), newObj);
newObj->init();
attachWrapper(newObj.get());
return newObj.get();
}
AccessibilityObject* AXObjectCache::getOrCreate(Node* node)
{
if (!node)
return nullptr;
if (AccessibilityObject* obj = get(node))
return obj;
if (node->renderer())
return getOrCreate(node->renderer());
if (!node->parentElement())
return nullptr;
bool inCanvasSubtree = lineageOfType<HTMLCanvasElement>(*node->parentElement()).first();
bool isHidden = isNodeAriaVisible(node);
bool insideMeterElement = false;
#if ENABLE(METER_ELEMENT)
insideMeterElement = is<HTMLMeterElement>(*node->parentElement());
#endif
if (!inCanvasSubtree && !isHidden && !insideMeterElement)
return nullptr;
if (inCanvasSubtree)
node->document().updateStyleIfNeeded();
RefPtr<AccessibilityObject> newObj = createFromNode(node);
ASSERT(!get(node));
getAXID(newObj.get());
m_nodeObjectMapping.set(node, newObj->axObjectID());
m_objects.set(newObj->axObjectID(), newObj);
newObj->init();
attachWrapper(newObj.get());
newObj->setLastKnownIsIgnoredValue(newObj->accessibilityIsIgnored());
if (newObj->isDetached())
return nullptr;
return newObj.get();
}
AccessibilityObject* AXObjectCache::getOrCreate(RenderObject* renderer)
{
if (!renderer)
return nullptr;
if (AccessibilityObject* obj = get(renderer))
return obj;
RefPtr<AccessibilityObject> newObj = createFromRenderer(renderer);
ASSERT(!get(renderer));
getAXID(newObj.get());
m_renderObjectMapping.set(renderer, newObj->axObjectID());
m_objects.set(newObj->axObjectID(), newObj);
newObj->init();
attachWrapper(newObj.get());
newObj->setLastKnownIsIgnoredValue(newObj->accessibilityIsIgnored());
if (newObj->isDetached())
return nullptr;
return newObj.get();
}
AccessibilityObject* AXObjectCache::rootObject()
{
if (!gAccessibilityEnabled)
return nullptr;
return getOrCreate(m_document.view());
}
AccessibilityObject* AXObjectCache::rootObjectForFrame(Frame* frame)
{
if (!gAccessibilityEnabled)
return nullptr;
if (!frame)
return nullptr;
return getOrCreate(frame->view());
}
AccessibilityObject* AXObjectCache::getOrCreate(AccessibilityRole role)
{
RefPtr<AccessibilityObject> obj = nullptr;
switch (role) {
case ListBoxOptionRole:
obj = AccessibilityListBoxOption::create();
break;
case ImageMapLinkRole:
obj = AccessibilityImageMapLink::create();
break;
case ColumnRole:
obj = AccessibilityTableColumn::create();
break;
case TableHeaderContainerRole:
obj = AccessibilityTableHeaderContainer::create();
break;
case SliderThumbRole:
obj = AccessibilitySliderThumb::create();
break;
case MenuListPopupRole:
obj = AccessibilityMenuListPopup::create();
break;
case MenuListOptionRole:
obj = AccessibilityMenuListOption::create();
break;
case SpinButtonRole:
obj = AccessibilitySpinButton::create();
break;
case SpinButtonPartRole:
obj = AccessibilitySpinButtonPart::create();
break;
default:
obj = nullptr;
}
if (obj)
getAXID(obj.get());
else
return nullptr;
m_objects.set(obj->axObjectID(), obj);
obj->init();
attachWrapper(obj.get());
return obj.get();
}
void AXObjectCache::remove(AXID axID)
{
if (!axID)
return;
AccessibilityObject* obj = m_objects.get(axID);
if (!obj)
return;
detachWrapper(obj, ElementDestroyed);
obj->detach(ElementDestroyed, this);
removeAXID(obj);
if (!m_objects.take(axID))
return;
ASSERT(m_objects.size() >= m_idsInUse.size());
}
void AXObjectCache::remove(RenderObject* renderer)
{
if (!renderer)
return;
AXID axID = m_renderObjectMapping.get(renderer);
remove(axID);
m_renderObjectMapping.remove(renderer);
}
void AXObjectCache::remove(Node* node)
{
if (!node)
return;
removeNodeForUse(node);
AXID axID = m_nodeObjectMapping.get(node);
remove(axID);
m_nodeObjectMapping.remove(node);
if (node->renderer()) {
remove(node->renderer());
return;
}
}
void AXObjectCache::remove(Widget* view)
{
if (!view)
return;
AXID axID = m_widgetObjectMapping.get(view);
remove(axID);
m_widgetObjectMapping.remove(view);
}
#if !PLATFORM(WIN)
AXID AXObjectCache::platformGenerateAXID() const
{
static AXID lastUsedID = 0;
AXID objID = lastUsedID;
do {
++objID;
} while (!objID || HashTraits<AXID>::isDeletedValue(objID) || m_idsInUse.contains(objID));
lastUsedID = objID;
return objID;
}
#endif
AXID AXObjectCache::getAXID(AccessibilityObject* obj)
{
AXID objID = obj->axObjectID();
if (objID) {
ASSERT(m_idsInUse.contains(objID));
return objID;
}
objID = platformGenerateAXID();
m_idsInUse.add(objID);
obj->setAXObjectID(objID);
return objID;
}
void AXObjectCache::removeAXID(AccessibilityObject* object)
{
if (!object)
return;
AXID objID = object->axObjectID();
if (!objID)
return;
ASSERT(!HashTraits<AXID>::isDeletedValue(objID));
ASSERT(m_idsInUse.contains(objID));
object->setAXObjectID(0);
m_idsInUse.remove(objID);
}
void AXObjectCache::textChanged(Node* node)
{
textChanged(getOrCreate(node));
}
void AXObjectCache::textChanged(RenderObject* renderer)
{
textChanged(getOrCreate(renderer));
}
void AXObjectCache::textChanged(AccessibilityObject* obj)
{
if (!obj)
return;
bool parentAlreadyExists = obj->parentObjectIfExists();
obj->textChanged();
postNotification(obj, obj->document(), AXObjectCache::AXTextChanged);
if (parentAlreadyExists)
obj->notifyIfIgnoredValueChanged();
}
void AXObjectCache::updateCacheAfterNodeIsAttached(Node* node)
{
get(node);
}
void AXObjectCache::handleMenuOpened(Node* node)
{
if (!node || !node->renderer() || !nodeHasRole(node, "menu"))
return;
postNotification(getOrCreate(node), &document(), AXMenuOpened);
}
void AXObjectCache::handleLiveRegionCreated(Node* node)
{
if (!is<Element>(node) || !node->renderer())
return;
Element* element = downcast<Element>(node);
String liveRegionStatus = element->fastGetAttribute(aria_liveAttr);
if (liveRegionStatus.isEmpty()) {
const AtomicString& ariaRole = element->fastGetAttribute(roleAttr);
if (!ariaRole.isEmpty())
liveRegionStatus = AccessibilityObject::defaultLiveRegionStatusForRole(AccessibilityObject::ariaRoleToWebCoreRole(ariaRole));
}
if (AccessibilityObject::liveRegionStatusIsEnabled(liveRegionStatus))
postNotification(getOrCreate(node), &document(), AXLiveRegionCreated);
}
void AXObjectCache::childrenChanged(Node* node, Node* newChild)
{
if (newChild) {
handleMenuOpened(newChild);
handleLiveRegionCreated(newChild);
}
childrenChanged(get(node));
}
void AXObjectCache::childrenChanged(RenderObject* renderer, RenderObject* newChild)
{
if (!renderer)
return;
if (newChild) {
handleMenuOpened(newChild->node());
handleLiveRegionCreated(newChild->node());
}
childrenChanged(get(renderer));
}
void AXObjectCache::childrenChanged(AccessibilityObject* obj)
{
if (!obj)
return;
obj->childrenChanged();
}
void AXObjectCache::notificationPostTimerFired()
{
Ref<Document> protectorForCacheOwner(m_document);
m_notificationPostTimer.stop();
auto notifications = WTF::move(m_notificationsToPost);
for (const auto& note : notifications) {
AccessibilityObject* obj = note.first.get();
if (!obj->axObjectID())
continue;
if (!obj->axObjectCache())
continue;
#ifndef NDEBUG
if (is<AccessibilityRenderObject>(*obj)) {
if (auto* renderer = downcast<AccessibilityRenderObject>(*obj).renderer())
ASSERT(!renderer->view().layoutState());
}
#endif
AXNotification notification = note.second;
if (notification == AXMenuOpened) {
obj->updateChildrenIfNecessary();
if (obj->roleValue() != MenuRole)
continue;
}
postPlatformNotification(obj, notification);
if (notification == AXChildrenChanged && obj->parentObjectIfExists() && obj->lastKnownIsIgnoredValue() != obj->accessibilityIsIgnored())
childrenChanged(obj->parentObject());
}
}
void AXObjectCache::passwordNotificationPostTimerFired()
{
#if PLATFORM(COCOA)
m_passwordNotificationPostTimer.stop();
auto notifications = WTF::move(m_passwordNotificationsToPost);
for (auto& notification : notifications)
postTextStateChangePlatformNotification(notification.get(), AXTextEditTypeInsert, " ", VisiblePosition());
#endif
}
void AXObjectCache::postNotification(RenderObject* renderer, AXNotification notification, PostTarget postTarget, PostType postType)
{
if (!renderer)
return;
stopCachingComputedObjectAttributes();
RefPtr<AccessibilityObject> object = get(renderer);
while (!object && renderer) {
renderer = renderer->parent();
object = get(renderer);
}
if (!renderer)
return;
postNotification(object.get(), &renderer->document(), notification, postTarget, postType);
}
void AXObjectCache::postNotification(Node* node, AXNotification notification, PostTarget postTarget, PostType postType)
{
if (!node)
return;
stopCachingComputedObjectAttributes();
RefPtr<AccessibilityObject> object = get(node);
while (!object && node) {
node = node->parentNode();
object = get(node);
}
if (!node)
return;
postNotification(object.get(), &node->document(), notification, postTarget, postType);
}
void AXObjectCache::postNotification(AccessibilityObject* object, Document* document, AXNotification notification, PostTarget postTarget, PostType postType)
{
stopCachingComputedObjectAttributes();
if (object && postTarget == TargetObservableParent)
object = object->observableObject();
if (!object && document)
object = get(document->renderView());
if (!object)
return;
if (postType == PostAsynchronously) {
m_notificationsToPost.append(std::make_pair(object, notification));
if (!m_notificationPostTimer.isActive())
m_notificationPostTimer.startOneShot(0);
} else
postPlatformNotification(object, notification);
}
void AXObjectCache::checkedStateChanged(Node* node)
{
postNotification(node, AXObjectCache::AXCheckedStateChanged);
}
void AXObjectCache::handleMenuItemSelected(Node* node)
{
if (!node)
return;
if (!nodeHasRole(node, "menuitem") && !nodeHasRole(node, "menuitemradio") && !nodeHasRole(node, "menuitemcheckbox"))
return;
if (!downcast<Element>(*node).focused() && !equalIgnoringCase(downcast<Element>(*node).fastGetAttribute(aria_selectedAttr), "true"))
return;
postNotification(getOrCreate(node), &document(), AXMenuListItemSelected);
}
void AXObjectCache::handleFocusedUIElementChanged(Node* oldNode, Node* newNode)
{
handleMenuItemSelected(newNode);
platformHandleFocusedUIElementChanged(oldNode, newNode);
}
void AXObjectCache::selectedChildrenChanged(Node* node)
{
handleMenuItemSelected(node);
postNotification(node, AXSelectedChildrenChanged, TargetObservableParent);
}
void AXObjectCache::selectedChildrenChanged(RenderObject* renderer)
{
if (renderer)
handleMenuItemSelected(renderer->node());
postNotification(renderer, AXSelectedChildrenChanged, TargetObservableParent);
}
#ifndef NDEBUG
void AXObjectCache::showIntent(const AXTextStateChangeIntent &intent)
{
switch (intent.type) {
case AXTextStateChangeTypeUnknown:
dataLog("Unknown");
break;
case AXTextStateChangeTypeEdit:
dataLog("Edit::");
break;
case AXTextStateChangeTypeSelectionMove:
dataLog("Move::");
break;
case AXTextStateChangeTypeSelectionExtend:
dataLog("Extend::");
break;
}
switch (intent.type) {
case AXTextStateChangeTypeUnknown:
break;
case AXTextStateChangeTypeEdit:
switch (intent.change) {
case AXTextEditTypeUnknown:
dataLog("Unknown");
break;
case AXTextEditTypeDelete:
dataLog("Delete");
break;
case AXTextEditTypeInsert:
dataLog("Insert");
break;
case AXTextEditTypeDictation:
dataLog("DictationInsert");
break;
case AXTextEditTypeTyping:
dataLog("TypingInsert");
break;
case AXTextEditTypeCut:
dataLog("Cut");
break;
case AXTextEditTypePaste:
dataLog("Paste");
break;
case AXTextEditTypeAttributesChange:
dataLog("AttributesChange");
break;
}
break;
case AXTextStateChangeTypeSelectionMove:
case AXTextStateChangeTypeSelectionExtend:
switch (intent.selection.direction) {
case AXTextSelectionDirectionUnknown:
dataLog("Unknown::");
break;
case AXTextSelectionDirectionBeginning:
dataLog("Beginning::");
break;
case AXTextSelectionDirectionEnd:
dataLog("End::");
break;
case AXTextSelectionDirectionPrevious:
dataLog("Previous::");
break;
case AXTextSelectionDirectionNext:
dataLog("Next::");
break;
case AXTextSelectionDirectionDiscontiguous:
dataLog("Discontiguous::");
break;
}
switch (intent.selection.direction) {
case AXTextSelectionDirectionUnknown:
case AXTextSelectionDirectionBeginning:
case AXTextSelectionDirectionEnd:
case AXTextSelectionDirectionPrevious:
case AXTextSelectionDirectionNext:
switch (intent.selection.granularity) {
case AXTextSelectionGranularityUnknown:
dataLog("Unknown");
break;
case AXTextSelectionGranularityCharacter:
dataLog("Character");
break;
case AXTextSelectionGranularityWord:
dataLog("Word");
break;
case AXTextSelectionGranularityLine:
dataLog("Line");
break;
case AXTextSelectionGranularitySentence:
dataLog("Sentence");
break;
case AXTextSelectionGranularityParagraph:
dataLog("Paragraph");
break;
case AXTextSelectionGranularityPage:
dataLog("Page");
break;
case AXTextSelectionGranularityDocument:
dataLog("Document");
break;
case AXTextSelectionGranularityAll:
dataLog("All");
break;
}
break;
case AXTextSelectionDirectionDiscontiguous:
break;
}
break;
}
dataLog("\n");
}
#endif
void AXObjectCache::setTextSelectionIntent(const AXTextStateChangeIntent& intent)
{
m_textSelectionIntent = intent;
}
void AXObjectCache::setIsSynchronizingSelection(bool isSynchronizing)
{
m_isSynchronizingSelection = isSynchronizing;
}
static bool isPasswordFieldOrContainedByPasswordField(AccessibilityObject* object)
{
return object && (object->isPasswordField() || object->isContainedByPasswordField());
}
void AXObjectCache::postTextStateChangeNotification(Node* node, const AXTextStateChangeIntent& intent, const VisibleSelection& selection)
{
if (!node)
return;
#if PLATFORM(COCOA)
stopCachingComputedObjectAttributes();
postTextStateChangeNotification(getOrCreate(node), intent, selection);
#else
postNotification(node->renderer(), AXObjectCache::AXSelectedTextChanged, TargetObservableParent);
UNUSED_PARAM(intent);
UNUSED_PARAM(selection);
#endif
}
void AXObjectCache::postTextStateChangeNotification(const Position& position, const AXTextStateChangeIntent& intent, const VisibleSelection& selection)
{
Node* node = position.deprecatedNode();
if (!node)
return;
stopCachingComputedObjectAttributes();
#if PLATFORM(COCOA)
AccessibilityObject* object = getOrCreate(node);
if (object && object->accessibilityIsIgnored()) {
if (position.atLastEditingPositionForNode()) {
if (AccessibilityObject* nextSibling = object->nextSiblingUnignored(1))
object = nextSibling;
} else if (position.atFirstEditingPositionForNode()) {
if (AccessibilityObject* previousSibling = object->previousSiblingUnignored(1))
object = previousSibling;
}
}
postTextStateChangeNotification(object, intent, selection);
#else
postTextStateChangeNotification(node, intent, selection);
#endif
}
void AXObjectCache::postTextStateChangeNotification(AccessibilityObject* object, const AXTextStateChangeIntent& intent, const VisibleSelection& selection)
{
stopCachingComputedObjectAttributes();
#if PLATFORM(COCOA)
if (object) {
if (isPasswordFieldOrContainedByPasswordField(object))
return;
if (auto observableObject = object->observableObject())
object = observableObject;
}
const AXTextStateChangeIntent& newIntent = (intent.type == AXTextStateChangeTypeUnknown || (m_isSynchronizingSelection && m_textSelectionIntent.type != AXTextStateChangeTypeUnknown)) ? m_textSelectionIntent : intent;
postTextStateChangePlatformNotification(object, newIntent, selection);
#else
UNUSED_PARAM(object);
UNUSED_PARAM(intent);
UNUSED_PARAM(selection);
#endif
setTextSelectionIntent(AXTextStateChangeIntent());
setIsSynchronizingSelection(false);
}
void AXObjectCache::postTextStateChangeNotification(Node* node, AXTextEditType type, const String& text, const VisiblePosition& position)
{
if (!node)
return;
ASSERT(type != AXTextEditTypeUnknown);
stopCachingComputedObjectAttributes();
AccessibilityObject* object = getOrCreate(node);
#if PLATFORM(COCOA)
if (object) {
if (enqueuePasswordValueChangeNotification(object))
return;
object = object->observableObject();
}
postTextStateChangePlatformNotification(object, type, text, position);
#else
nodeTextChangePlatformNotification(object, textChangeForEditType(type), position.deepEquivalent().deprecatedEditingOffset(), text);
#endif
}
void AXObjectCache::postTextReplacementNotification(Node* node, AXTextEditType deletionType, const String& deletedText, AXTextEditType insertionType, const String& insertedText, const VisiblePosition& position)
{
if (!node)
return;
ASSERT(deletionType == AXTextEditTypeDelete);
ASSERT(insertionType == AXTextEditTypeInsert || insertionType == AXTextEditTypeTyping || insertionType == AXTextEditTypeDictation || insertionType == AXTextEditTypePaste);
stopCachingComputedObjectAttributes();
AccessibilityObject* object = getOrCreate(node);
#if PLATFORM(COCOA)
if (object) {
if (enqueuePasswordValueChangeNotification(object))
return;
object = object->observableObject();
}
postTextReplacementPlatformNotification(object, deletionType, deletedText, insertionType, insertedText, position);
#else
nodeTextChangePlatformNotification(object, textChangeForEditType(deletionType), position.deepEquivalent().deprecatedEditingOffset(), deletedText);
nodeTextChangePlatformNotification(object, textChangeForEditType(insertionType), position.deepEquivalent().deprecatedEditingOffset(), insertedText);
#endif
}
bool AXObjectCache::enqueuePasswordValueChangeNotification(AccessibilityObject* object)
{
if (!isPasswordFieldOrContainedByPasswordField(object))
return false;
AccessibilityObject* observableObject = object->observableObject();
if (!observableObject) {
ASSERT_NOT_REACHED();
return true;
}
m_passwordNotificationsToPost.add(observableObject);
if (!m_passwordNotificationPostTimer.isActive())
m_passwordNotificationPostTimer.startOneShot(AccessibilityPasswordValueChangeNotificationInterval);
return true;
}
void AXObjectCache::frameLoadingEventNotification(Frame* frame, AXLoadingEvent loadingEvent)
{
if (!frame)
return;
RenderView* contentRenderer = frame->contentRenderer();
if (!contentRenderer)
return;
AccessibilityObject* obj = getOrCreate(contentRenderer);
frameLoadingEventPlatformNotification(obj, loadingEvent);
}
void AXObjectCache::postLiveRegionChangeNotification(AccessibilityObject* object)
{
if (m_liveRegionChangedPostTimer.isActive())
m_liveRegionChangedPostTimer.stop();
if (!m_liveRegionObjectsSet.contains(object))
m_liveRegionObjectsSet.add(object);
m_liveRegionChangedPostTimer.startOneShot(AccessibilityLiveRegionChangedNotificationInterval);
}
void AXObjectCache::liveRegionChangedNotificationPostTimerFired()
{
m_liveRegionChangedPostTimer.stop();
if (m_liveRegionObjectsSet.isEmpty())
return;
for (auto& object : m_liveRegionObjectsSet)
postNotification(object.get(), object->document(), AXObjectCache::AXLiveRegionChanged);
m_liveRegionObjectsSet.clear();
}
void AXObjectCache::handleScrollbarUpdate(ScrollView* view)
{
if (!view)
return;
if (AccessibilityObject* scrollViewObject = get(view)) {
stopCachingComputedObjectAttributes();
scrollViewObject->updateChildrenIfNecessary();
}
}
void AXObjectCache::handleAriaExpandedChange(Node* node)
{
if (AccessibilityObject* obj = getOrCreate(node))
obj->handleAriaExpandedChanged();
}
void AXObjectCache::handleActiveDescendantChanged(Node* node)
{
if (AccessibilityObject* obj = getOrCreate(node))
obj->handleActiveDescendantChanged();
}
void AXObjectCache::handleAriaRoleChanged(Node* node)
{
stopCachingComputedObjectAttributes();
if (AccessibilityObject* obj = getOrCreate(node)) {
obj->updateAccessibilityRole();
obj->notifyIfIgnoredValueChanged();
}
}
void AXObjectCache::handleAttributeChanged(const QualifiedName& attrName, Element* element)
{
if (attrName == roleAttr)
handleAriaRoleChanged(element);
else if (attrName == altAttr || attrName == titleAttr)
textChanged(element);
else if (attrName == forAttr && is<HTMLLabelElement>(*element))
labelChanged(element);
if (!attrName.localName().string().startsWith("aria-"))
return;
if (attrName == aria_activedescendantAttr)
handleActiveDescendantChanged(element);
else if (attrName == aria_busyAttr)
postNotification(element, AXObjectCache::AXElementBusyChanged);
else if (attrName == aria_valuenowAttr || attrName == aria_valuetextAttr)
postNotification(element, AXObjectCache::AXValueChanged);
else if (attrName == aria_labelAttr || attrName == aria_labeledbyAttr || attrName == aria_labelledbyAttr)
textChanged(element);
else if (attrName == aria_checkedAttr)
checkedStateChanged(element);
else if (attrName == aria_selectedAttr)
selectedChildrenChanged(element);
else if (attrName == aria_expandedAttr)
handleAriaExpandedChange(element);
else if (attrName == aria_hiddenAttr)
childrenChanged(element->parentNode(), element);
else if (attrName == aria_invalidAttr)
postNotification(element, AXObjectCache::AXInvalidStatusChanged);
else
postNotification(element, AXObjectCache::AXAriaAttributeChanged);
}
void AXObjectCache::labelChanged(Element* element)
{
ASSERT(is<HTMLLabelElement>(*element));
HTMLElement* correspondingControl = downcast<HTMLLabelElement>(*element).control();
textChanged(correspondingControl);
}
void AXObjectCache::recomputeIsIgnored(RenderObject* renderer)
{
if (AccessibilityObject* obj = get(renderer))
obj->notifyIfIgnoredValueChanged();
}
void AXObjectCache::startCachingComputedObjectAttributesUntilTreeMutates()
{
if (!m_computedObjectAttributeCache)
m_computedObjectAttributeCache = std::make_unique<AXComputedObjectAttributeCache>();
}
void AXObjectCache::stopCachingComputedObjectAttributes()
{
m_computedObjectAttributeCache = nullptr;
}
VisiblePosition AXObjectCache::visiblePositionForTextMarkerData(TextMarkerData& textMarkerData)
{
if (!isNodeInUse(textMarkerData.node))
return VisiblePosition();
VisiblePosition visiblePos = VisiblePosition(createLegacyEditingPosition(textMarkerData.node, textMarkerData.offset), textMarkerData.affinity);
Position deepPos = visiblePos.deepEquivalent();
if (deepPos.isNull())
return VisiblePosition();
RenderObject* renderer = deepPos.deprecatedNode()->renderer();
if (!renderer)
return VisiblePosition();
AXObjectCache* cache = renderer->document().axObjectCache();
if (!cache->isIDinUse(textMarkerData.axID))
return VisiblePosition();
if (deepPos.deprecatedNode() != textMarkerData.node || deepPos.deprecatedEditingOffset() != textMarkerData.offset)
return VisiblePosition();
return visiblePos;
}
void AXObjectCache::textMarkerDataForVisiblePosition(TextMarkerData& textMarkerData, const VisiblePosition& visiblePos)
{
memset(&textMarkerData, 0, sizeof(TextMarkerData));
if (visiblePos.isNull())
return;
Position deepPos = visiblePos.deepEquivalent();
Node* domNode = deepPos.deprecatedNode();
ASSERT(domNode);
if (!domNode)
return;
if (domNode->isHTMLElement()) {
HTMLInputElement* inputElement = domNode->toInputElement();
if (inputElement && inputElement->isPasswordField())
return;
}
AXObjectCache* cache = domNode->document().axObjectCache();
RefPtr<AccessibilityObject> obj = cache->getOrCreate(domNode);
textMarkerData.axID = obj.get()->axObjectID();
textMarkerData.node = domNode;
textMarkerData.offset = deepPos.deprecatedEditingOffset();
textMarkerData.affinity = visiblePos.affinity();
cache->setNodeInUse(domNode);
}
const Element* AXObjectCache::rootAXEditableElement(const Node* node)
{
const Element* result = node->rootEditableElement();
const Element* element = is<Element>(*node) ? downcast<Element>(node) : node->parentElement();
for (; element; element = element->parentElement()) {
if (nodeIsTextControl(element))
result = element;
}
return result;
}
void AXObjectCache::clearTextMarkerNodesInUse(Document* document)
{
if (!document)
return;
HashSet<Node*> nodesToDelete;
for (const auto& node : m_textMarkerNodes) {
if (!node->inDocument() || &(node)->document() == document)
nodesToDelete.add(node);
}
for (const auto& node : nodesToDelete)
m_textMarkerNodes.remove(node);
}
bool AXObjectCache::nodeIsTextControl(const Node* node)
{
if (!node)
return false;
const AccessibilityObject* axObject = getOrCreate(const_cast<Node*>(node));
return axObject && axObject->isTextControl();
}
bool isNodeAriaVisible(Node* node)
{
if (!node)
return false;
bool requiresAriaHiddenFalse = !node->renderer();
bool ariaHiddenFalsePresent = false;
for (Node* testNode = node; testNode; testNode = testNode->parentNode()) {
if (is<Element>(*testNode)) {
const AtomicString& ariaHiddenValue = downcast<Element>(*testNode).fastGetAttribute(aria_hiddenAttr);
if (equalIgnoringCase(ariaHiddenValue, "true"))
return false;
bool ariaHiddenFalse = equalIgnoringCase(ariaHiddenValue, "false");
if (!testNode->renderer() && !ariaHiddenFalse)
return false;
if (!ariaHiddenFalsePresent && ariaHiddenFalse)
ariaHiddenFalsePresent = true;
}
}
return !requiresAriaHiddenFalse || ariaHiddenFalsePresent;
}
AccessibilityObject* AXObjectCache::rootWebArea()
{
AccessibilityObject* rootObject = this->rootObject();
if (!rootObject || !rootObject->isAccessibilityScrollView())
return nullptr;
return downcast<AccessibilityScrollView>(*rootObject).webAreaObject();
}
AXAttributeCacheEnabler::AXAttributeCacheEnabler(AXObjectCache* cache)
: m_cache(cache)
{
if (m_cache)
m_cache->startCachingComputedObjectAttributesUntilTreeMutates();
}
AXAttributeCacheEnabler::~AXAttributeCacheEnabler()
{
if (m_cache)
m_cache->stopCachingComputedObjectAttributes();
}
#if !PLATFORM(COCOA)
AXTextChange AXObjectCache::textChangeForEditType(AXTextEditType type)
{
switch (type) {
case AXTextEditTypeCut:
case AXTextEditTypeDelete:
return AXTextDeleted;
case AXTextEditTypeInsert:
case AXTextEditTypeDictation:
case AXTextEditTypeTyping:
case AXTextEditTypePaste:
return AXTextInserted;
case AXTextEditTypeAttributesChange:
return AXTextAttributesChanged;
case AXTextEditTypeUnknown:
break;
}
ASSERT_NOT_REACHED();
return AXTextInserted;
}
#endif
}
#endif // HAVE(ACCESSIBILITY)