AccessibilityObject* AccessibilityScrollView::parentObject() const
{
if (!m_scrollView || !m_scrollView->isFrameView())
return 0;
AXObjectCache* cache = axObjectCache();
if (!cache)
return nullptr;
HTMLFrameOwnerElement* owner = toFrameView(m_scrollView)->frame().ownerElement();
if (owner && owner->renderer())
return cache->getOrCreate(owner);
return 0;
}
RenderPart* Frame::ownerRenderer() const
{
HTMLFrameOwnerElement* ownerElement = m_ownerElement;
if (!ownerElement)
return 0;
RenderObject* object = ownerElement->renderer();
if (!object)
return 0;
// FIXME: If <object> is ever fixed to disassociate itself from frames
// that it has started but canceled, then this can turn into an ASSERT
// since m_ownerElement would be 0 when the load is canceled.
// https://bugs.webkit.org/show_bug.cgi?id=18585
if (!object->isRenderPart())
return 0;
return toRenderPart(object);
}
RenderWidget* Frame::ownerRenderer() const
{
HTMLFrameOwnerElement* ownerElement = m_ownerElement;
if (!ownerElement)
return nullptr;
auto* object = ownerElement->renderer();
if (!object)
return nullptr;
// FIXME: If <object> is ever fixed to disassociate itself from frames
// that it has started but canceled, then this can turn into an ASSERT
// since m_ownerElement would be 0 when the load is canceled.
// https://bugs.webkit.org/show_bug.cgi?id=18585
if (!is<RenderWidget>(*object))
return nullptr;
return downcast<RenderWidget>(object);
}
Node* FocusController::findFocusableNodeDecendingDownIntoFrameDocument(FocusDirection direction, Node* node, KeyboardEvent* event)
{
// The node we found might be a HTMLFrameOwnerElement, so descend down the tree until we find either:
// 1) a focusable node, or
// 2) the deepest-nested HTMLFrameOwnerElement.
while (node && node->isFrameOwnerElement()) {
HTMLFrameOwnerElement* owner = static_cast<HTMLFrameOwnerElement*>(node);
if (!owner->contentFrame())
break;
Node* foundNode = findFocusableNode(direction, FocusNavigationScope::focusNavigationScopeOwnedByIFrame(owner), 0, event);
if (!foundNode)
break;
ASSERT(node != foundNode);
node = foundNode;
}
return node;
}
void SerializerMarkupAccumulator::appendCustomAttributes(StringBuilder& out, Element* element, Namespaces* namespaces)
{
if (!element->isFrameOwnerElement())
return;
HTMLFrameOwnerElement* frameOwner = static_cast<HTMLFrameOwnerElement*>(element);
Frame* frame = frameOwner->contentFrame();
if (!frame)
return;
KURL url = frame->document()->url();
if (url.isValid() && !url.protocolIs("about"))
return;
// We need to give a fake location to blank frames so they can be referenced by the serialized frame.
url = m_serializer->urlForBlankFrame(frame);
appendAttribute(out, element, Attribute(frameOwnerURLAttributeName(*frameOwner), url.string()), namespaces);
}
void FocusController::deepFindFocusableNodeInDirection(Node* container, Node* focusedNode,
FocusDirection direction, KeyboardEvent* event,
FocusCandidate& closestFocusCandidate)
{
ASSERT(container->hasTagName(frameTag) || container->hasTagName(iframeTag));
// Track if focusedNode is a descendant of the current container node being processed.
bool descendantOfContainer = false;
Node* firstChild = 0;
// Iframe or Frame.
if (container->hasTagName(frameTag) || container->hasTagName(iframeTag)) {
HTMLFrameOwnerElement* owner = static_cast<HTMLFrameOwnerElement*>(container);
if (!owner->contentFrame())
return;
Document* innerDocument = owner->contentFrame()->document();
if (!innerDocument)
return;
descendantOfContainer = innerDocument == focusedNode->document();
firstChild = innerDocument->firstChild();
}
if (descendantOfContainer) {
findFocusableNodeInDirection(firstChild, focusedNode, direction, event, closestFocusCandidate);
return;
}
// Check if the current container element itself is a good candidate
// to move focus to. If it is, then we traverse its inner nodes.
FocusCandidate candidateParent = FocusCandidate(container);
distanceDataForNode(direction, focusedNode, candidateParent);
// Bail out if distance is maximum.
if (candidateParent.distance == maxDistance())
return;
// FIXME: Consider alignment?
if (candidateParent.distance < closestFocusCandidate.distance)
findFocusableNodeInDirection(firstChild, focusedNode, direction, event, closestFocusCandidate, candidateParent);
}
void LocalFrame::createView(const IntSize& viewportSize, const Color& backgroundColor, bool transparent,
ScrollbarMode horizontalScrollbarMode, bool horizontalLock,
ScrollbarMode verticalScrollbarMode, bool verticalLock)
{
ASSERT(this);
ASSERT(page());
bool isMainFrame = this->isMainFrame();
if (isMainFrame && view())
view()->setParentVisible(false);
setView(nullptr);
RefPtr<FrameView> frameView;
if (isMainFrame) {
frameView = FrameView::create(this, viewportSize);
// The layout size is set by WebViewImpl to support @viewport
frameView->setLayoutSizeFixedToFrameSize(false);
} else
frameView = FrameView::create(this);
frameView->setScrollbarModes(horizontalScrollbarMode, verticalScrollbarMode, horizontalLock, verticalLock);
setView(frameView);
frameView->updateBackgroundRecursively(backgroundColor, transparent);
if (isMainFrame)
frameView->setParentVisible(true);
// FIXME: Not clear what the right thing for OOPI is here.
if (ownerRenderer()) {
HTMLFrameOwnerElement* owner = deprecatedLocalOwner();
ASSERT(owner);
owner->setWidget(frameView);
}
if (HTMLFrameOwnerElement* owner = deprecatedLocalOwner())
view()->setCanHaveScrollbars(owner->scrollingMode() != ScrollbarAlwaysOff);
}
bool RenderPart::requiresAcceleratedCompositing() const
{
// There are two general cases in which we can return true. First, if this is a plugin
// renderer and the plugin has a layer, then we need a layer. Second, if this is
// a renderer with a contentDocument and that document needs a layer, then we need
// a layer.
if (widget() && widget()->isPluginView() && toPluginView(widget())->platformLayer())
return true;
if (!node() || !node()->isFrameOwnerElement())
return false;
HTMLFrameOwnerElement* element = toFrameOwnerElement(node());
if (Document* contentDocument = element->contentDocument()) {
if (RenderView* view = contentDocument->renderView())
return view->usesCompositing();
}
return false;
}
Element* TopDocumentRootScrollerController::findGlobalRootScrollerElement() {
if (!topDocument())
return nullptr;
DCHECK(topDocument()->rootScrollerController());
Element* element =
topDocument()->rootScrollerController()->effectiveRootScroller();
while (element && element->isFrameOwnerElement()) {
HTMLFrameOwnerElement* frameOwner = toHTMLFrameOwnerElement(element);
DCHECK(frameOwner);
Document* iframeDocument = frameOwner->contentDocument();
if (!iframeDocument)
return element;
DCHECK(iframeDocument->rootScrollerController());
element = iframeDocument->rootScrollerController()->effectiveRootScroller();
}
return element;
}
static Node* deepFocusableNode(FocusDirection direction, Node* node, KeyboardEvent* event)
{
// The node we found might be a HTMLFrameOwnerElement, so descend down the frame tree until we find either:
// 1) a focusable node, or
// 2) the deepest-nested HTMLFrameOwnerElement
while (node && node->isFrameOwnerElement()) {
HTMLFrameOwnerElement* owner = static_cast<HTMLFrameOwnerElement*>(node);
if (!owner->contentFrame())
break;
Document* document = owner->contentFrame()->document();
node = (direction == FocusDirectionForward)
? document->nextFocusableNode(0, event)
: document->previousFocusableNode(0, event);
if (!node) {
node = owner;
break;
}
}
return node;
}
Node* FocusController::findVerticallyFocusableNodeInRect(FocusDirection direction, Node* start, KeyboardEvent* event, const IntRect* rect)
{
#if PLATFORM(WKC)
CRASH_IF_STACK_OVERFLOW(WKC_STACK_MARGIN_DEFAULT);
#endif
ASSERT(direction == FocusDirectionUp || direction == FocusDirectionDown);
if (!start)
return 0;
Node* node = start;
HTMLFrameOwnerElement* owner;
Document* document;
while (node) {
if (!isNodeInSpecificRect(node, rect)) {
node = getClosestNode(node, direction);
continue;
}
owner = 0;
if (node->isFrameOwnerElement()) {
owner = static_cast<HTMLFrameOwnerElement*>(node);
if (!owner->contentFrame()) {
node = 0;
break;
}
document = owner->contentFrame()->document();
if (direction == FocusDirectionUp) {
node = findVerticallyFocusableNodeInRect(direction, document->lastChild(), event, rect);
} else {
node = findVerticallyFocusableNodeInRect(direction, document->firstChild(), event, rect);
}
if (node)
break;
node = getClosestNode(owner, direction);
continue;
} else if (isScrollableContainerNode(node) && !node->renderer()->isTextArea()) {
Node* childNode = 0;
if (direction == FocusDirectionUp) {
childNode = findVerticallyFocusableNodeInRect(direction, node->lastChild(), event, rect);
} else {
ASSERT(direction == FocusDirectionDown);
childNode = findVerticallyFocusableNodeInRect(direction, node->firstChild(), event, rect);
}
if (!childNode) {
node = getClosestNode(node, direction, true);
if (!node)
break;
} else {
node = childNode;
break;
}
}
if (node->isFocusable() && !node->isFrameOwnerElement()) {
break;
}
if (owner) {
node = owner;
}
node = getClosestNode(node, direction);
}
return node;
}
bool FocusController::advanceFocusInDocumentOrder(FocusDirection direction, KeyboardEvent* event, bool initialFocus)
{
Frame* frame = focusedOrMainFrame();
ASSERT(frame);
Document* document = frame->document();
Node* currentNode = document->focusedNode();
// FIXME: Not quite correct when it comes to focus transitions leaving/entering the WebView itself
bool caretBrowsing = frame->settings() && frame->settings()->caretBrowsingEnabled();
if (caretBrowsing && !currentNode)
currentNode = frame->selection()->start().deprecatedNode();
document->updateLayoutIgnorePendingStylesheets();
RefPtr<Node> node = findFocusableNodeAcrossFocusScope(direction, FocusNavigationScope::focusNavigationScopeOf(currentNode ? currentNode : document), currentNode, event);
if (!node) {
// We didn't find a node to focus, so we should try to pass focus to Chrome.
if (!initialFocus && m_page->chrome()->canTakeFocus(direction)) {
document->setFocusedNode(0);
setFocusedFrame(0);
m_page->chrome()->takeFocus(direction);
return true;
}
// Chrome doesn't want focus, so we should wrap focus.
node = findFocusableNodeRecursively(direction, FocusNavigationScope::focusNavigationScopeOf(m_page->mainFrame()->document()), 0, event);
node = findFocusableNodeDecendingDownIntoFrameDocument(direction, node.get(), event);
if (!node)
return false;
}
ASSERT(node);
if (node == document->focusedNode())
// Focus wrapped around to the same node.
return true;
if (!node->isElementNode())
// FIXME: May need a way to focus a document here.
return false;
if (node->isFrameOwnerElement() && (!node->isPluginElement() || !node->isKeyboardFocusable(event))) {
// We focus frames rather than frame owners.
// FIXME: We should not focus frames that have no scrollbars, as focusing them isn't useful to the user.
HTMLFrameOwnerElement* owner = static_cast<HTMLFrameOwnerElement*>(node.get());
if (!owner->contentFrame())
return false;
document->setFocusedNode(0);
setFocusedFrame(owner->contentFrame());
return true;
}
// FIXME: It would be nice to just be able to call setFocusedNode(node) here, but we can't do
// that because some elements (e.g. HTMLInputElement and HTMLTextAreaElement) do extra work in
// their focus() methods.
Document* newDocument = node->document();
if (newDocument != document)
// Focus is going away from this document, so clear the focused node.
document->setFocusedNode(0);
if (newDocument)
setFocusedFrame(newDocument->frame());
if (caretBrowsing) {
Position position = firstPositionInOrBeforeNode(node.get());
VisibleSelection newSelection(position, position, DOWNSTREAM);
if (frame->selection()->shouldChangeSelection(newSelection))
frame->selection()->setSelection(newSelection);
}
static_cast<Element*>(node.get())->focus(false);
return true;
}
bool FocusController::advanceFocus(FocusDirection direction, KeyboardEvent* event, bool initialFocus)
{
Frame* frame = focusedOrMainFrame();
ASSERT(frame);
Document* document = frame->document();
Node* currentNode = document->focusedNode();
// FIXME: Not quite correct when it comes to focus transitions leaving/entering the WebView itself
bool caretBrowsing = focusedOrMainFrame()->settings()->caretBrowsingEnabled();
if (caretBrowsing && !currentNode)
currentNode = frame->selection()->start().node();
document->updateLayoutIgnorePendingStylesheets();
Node* node = (direction == FocusDirectionForward)
? document->nextFocusableNode(currentNode, event)
: document->previousFocusableNode(currentNode, event);
// If there's no focusable node to advance to, move up the frame tree until we find one.
while (!node && frame) {
Frame* parentFrame = frame->tree()->parent();
if (!parentFrame)
break;
Document* parentDocument = parentFrame->document();
HTMLFrameOwnerElement* owner = frame->ownerElement();
if (!owner)
break;
node = (direction == FocusDirectionForward)
? parentDocument->nextFocusableNode(owner, event)
: parentDocument->previousFocusableNode(owner, event);
frame = parentFrame;
}
node = deepFocusableNode(direction, node, event);
if (!node) {
// We didn't find a node to focus, so we should try to pass focus to Chrome.
if (!initialFocus && m_page->chrome()->canTakeFocus(direction)) {
document->setFocusedNode(0);
setFocusedFrame(0);
m_page->chrome()->takeFocus(direction);
return true;
}
// Chrome doesn't want focus, so we should wrap focus.
Document* d = m_page->mainFrame()->document();
node = (direction == FocusDirectionForward)
? d->nextFocusableNode(0, event)
: d->previousFocusableNode(0, event);
node = deepFocusableNode(direction, node, event);
if (!node)
return false;
}
ASSERT(node);
if (node == document->focusedNode())
// Focus wrapped around to the same node.
return true;
if (!node->isElementNode())
// FIXME: May need a way to focus a document here.
return false;
if (node->isFrameOwnerElement()) {
// We focus frames rather than frame owners.
// FIXME: We should not focus frames that have no scrollbars, as focusing them isn't useful to the user.
HTMLFrameOwnerElement* owner = static_cast<HTMLFrameOwnerElement*>(node);
if (!owner->contentFrame())
return false;
document->setFocusedNode(0);
setFocusedFrame(owner->contentFrame());
return true;
}
// FIXME: It would be nice to just be able to call setFocusedNode(node) here, but we can't do
// that because some elements (e.g. HTMLInputElement and HTMLTextAreaElement) do extra work in
// their focus() methods.
Document* newDocument = node->document();
if (newDocument != document)
// Focus is going away from this document, so clear the focused node.
document->setFocusedNode(0);
if (newDocument)
setFocusedFrame(newDocument->frame());
if (caretBrowsing) {
VisibleSelection newSelection(Position(node, 0), Position(node, 0), DOWNSTREAM);
if (frame->shouldChangeSelection(newSelection))
frame->selection()->setSelection(newSelection);
}
static_cast<Element*>(node)->focus(false);
return true;
}
// intersectingRegions and remainingFingerRegion are all in main frame contents coordinates,
// even on recursive calls of ::findIntersectingRegions.
bool FatFingers::findIntersectingRegions(Document* document, Vector<IntersectingRegion>& intersectingRegions, IntRectRegion& remainingFingerRegion)
{
if (!document || !document->frame()->view())
return false;
// The layout needs to be up-to-date to determine if a node is focusable.
document->updateLayoutIgnorePendingStylesheets();
// Create fingerRect.
IntPoint frameContentPos(document->frame()->view()->windowToContents(m_webPage->m_mainFrame->view()->contentsToWindow(m_contentPos)));
IntRect viewportRect = m_webPage->mainFrame()->view()->visibleContentRect();
// Ensure the frameContentPos is inside the viewport.
frameContentPos = Platform::pointClampedToRect(frameContentPos, viewportRect);
#if DEBUG_FAT_FINGERS
IntRect fingerRect(fingerRectForPoint(frameContentPos));
Platform::IntRect screenFingerRect = m_webPage->mapToTransformed(fingerRect);
Platform::logAlways(Platform::LogLevelInfo, "fat finger rect now %s", screenFingerRect.toString().c_str());
// only record the first finger rect
if (document == m_webPage->m_mainFrame->document())
m_debugFatFingerRect = m_webPage->mapToTransformed(m_webPage->mapFromContentsToViewport(fingerRect));
#endif
bool foundOne = false;
RenderLayer* lowestPositionedEnclosingLayerSoFar = 0;
// Iterate over the list of nodes (and subrects of nodes where possible), for each saving the
// intersection of the bounding box with the finger rect.
ListHashSet<RefPtr<Node> > intersectedNodes;
getNodesFromRect(document, frameContentPos, intersectedNodes);
ListHashSet<RefPtr<Node> >::const_iterator it = intersectedNodes.begin();
ListHashSet<RefPtr<Node> >::const_iterator end = intersectedNodes.end();
for ( ; it != end; ++it) {
Node* curNode = (*it).get();
if (!curNode || !curNode->renderer())
continue;
if (remainingFingerRegion.isEmpty())
break;
bool isElement = curNode->isElementNode();
if (isElement && isValidFrameOwner(toElement(curNode))) {
HTMLFrameOwnerElement* owner = static_cast<HTMLFrameOwnerElement*>(curNode);
Document* childDocument = owner && owner->contentFrame() ? owner->contentFrame()->document() : 0;
if (!childDocument)
continue;
ASSERT(childDocument->frame()->view());
foundOne |= findIntersectingRegions(childDocument, intersectingRegions, remainingFingerRegion);
} else if (isElement && m_targetType == ClickableElement) {
foundOne |= checkForClickableElement(toElement(curNode), intersectingRegions, remainingFingerRegion, lowestPositionedEnclosingLayerSoFar);
} else if (m_targetType == Text)
foundOne |= checkForText(curNode, intersectingRegions, remainingFingerRegion);
}
return foundOne;
}
static JSValueRef addSourceToFrame(JSContextRef ctx, JSObjectRef /*function*/, JSObjectRef thisObject, size_t argumentCount, const JSValueRef arguments[], JSValueRef* /*exception*/)
{
JSValueRef undefined = JSValueMakeUndefined(ctx);
InspectorController* controller = reinterpret_cast<InspectorController*>(JSObjectGetPrivate(thisObject));
if (argumentCount < 2 || !controller)
return undefined;
JSValueRef identifierValue = arguments[0];
if (!JSValueIsNumber(ctx, identifierValue))
return undefined;
unsigned long identifier = static_cast<unsigned long>(JSValueToNumber(ctx, identifierValue, 0));
RefPtr<InspectorResource> resource = controller->resources().get(identifier);
ASSERT(resource);
if (!resource)
return undefined;
RefPtr<SharedBuffer> buffer;
if (resource->requestURL == resource->loader->requestURL())
buffer = resource->loader->mainResourceData();
else {
FrameLoader* frameLoader = resource->loader->frameLoader();
if (!frameLoader)
return undefined;
Document* doc = frameLoader->frame()->document();
if (!doc)
return undefined;
CachedResource* cachedResource = doc->docLoader()->cachedResource(resource->requestURL.url());
if (!cachedResource)
return undefined;
buffer = cachedResource->data();
}
if (!buffer)
return undefined;
String textEncodingName = resource->loader->overrideEncoding();
if (!textEncodingName)
textEncodingName = resource->textEncodingName;
TextEncoding encoding(textEncodingName);
if (!encoding.isValid())
encoding = WindowsLatin1Encoding();
String sourceString = encoding.decode(buffer->data(), buffer->size());
Node* node = toNode(toJS(arguments[1]));
ASSERT(node);
if (!node)
return undefined;
if (!node->attached()) {
ASSERT_NOT_REACHED();
return undefined;
}
ASSERT(node->isElementNode());
if (!node->isElementNode())
return undefined;
Element* element = static_cast<Element*>(node);
ASSERT(element->isFrameOwnerElement());
if (!element->isFrameOwnerElement())
return undefined;
HTMLFrameOwnerElement* frameOwner = static_cast<HTMLFrameOwnerElement*>(element);
ASSERT(frameOwner->contentFrame());
if (!frameOwner->contentFrame())
return undefined;
FrameLoader* loader = frameOwner->contentFrame()->loader();
loader->setResponseMIMEType(resource->mimeType);
loader->begin();
loader->write(sourceString);
loader->end();
return undefined;
}
bool WebFrame::swap(WebFrame* frame)
{
using std::swap;
RefPtrWillBeRawPtr<Frame> oldFrame = toCoreFrame(this);
// All child frames must be detached first.
oldFrame->detachChildren();
// If the frame has been detached during detaching its children, return
// immediately.
// FIXME: There is no unit test for this condition, so one needs to be
// written.
if (!oldFrame->host())
return false;
if (m_parent) {
if (m_parent->m_firstChild == this)
m_parent->m_firstChild = frame;
if (m_parent->m_lastChild == this)
m_parent->m_lastChild = frame;
swap(m_parent, frame->m_parent);
}
if (m_previousSibling) {
m_previousSibling->m_nextSibling = frame;
swap(m_previousSibling, frame->m_previousSibling);
}
if (m_nextSibling) {
m_nextSibling->m_previousSibling = frame;
swap(m_nextSibling, frame->m_nextSibling);
}
if (m_opener) {
m_opener->m_openedFrameTracker->remove(this);
m_opener->m_openedFrameTracker->add(frame);
swap(m_opener, frame->m_opener);
}
if (!m_openedFrameTracker->isEmpty()) {
m_openedFrameTracker->updateOpener(frame);
frame->m_openedFrameTracker.reset(m_openedFrameTracker.release());
}
// Finally, clone the state of the current Frame into one matching
// the type of the passed in WebFrame.
// FIXME: This is a bit clunky; this results in pointless decrements and
// increments of connected subframes.
FrameOwner* owner = oldFrame->owner();
oldFrame->disconnectOwnerElement();
if (Frame* newFrame = toCoreFrame(frame)) {
ASSERT(owner == newFrame->owner());
if (owner->isLocal()) {
HTMLFrameOwnerElement* ownerElement = toHTMLFrameOwnerElement(owner);
ownerElement->setContentFrame(*newFrame);
if (newFrame->isLocalFrame())
ownerElement->setWidget(toLocalFrame(newFrame)->view());
}
} else if (frame->isWebLocalFrame()) {
toWebLocalFrameImpl(frame)->initializeCoreFrame(oldFrame->host(), owner, oldFrame->tree().name(), nullAtom);
} else {
toWebRemoteFrameImpl(frame)->initializeCoreFrame(oldFrame->host(), owner, oldFrame->tree().name());
}
return true;
}