// Return a set of rectangles that should not be overdrawn by the
// plugin ("cutouts"). This helps implement the "iframe shim"
// technique of overlaying a windowed plugin with content from the
// page. In a nutshell, iframe elements should occlude plugins when
// they occur higher in the stacking order.
void getPluginOcclusions(Element* element, Widget* parentWidget, const IntRect& frameRect, Vector<IntRect>& occlusions)
{
RenderObject* pluginNode = element->renderer();
ASSERT(pluginNode);
if (!pluginNode->style())
return;
Vector<const RenderObject*> pluginZstack;
Vector<const RenderObject*> iframeZstack;
getObjectStack(pluginNode, &pluginZstack);
if (!parentWidget->isFrameView())
return;
FrameView* parentFrameView = toFrameView(parentWidget);
// Occlusions by iframes.
const FrameView::ChildrenWidgetSet* children = parentFrameView->children();
for (FrameView::ChildrenWidgetSet::const_iterator it = children->begin(); it != children->end(); ++it) {
// We only care about FrameView's because iframes show up as FrameViews.
if (!(*it)->isFrameView())
continue;
const FrameView* frameView = toFrameView(it->get());
// Check to make sure we can get both the element and the RenderObject
// for this FrameView, if we can't just move on to the next object.
// FIXME: Plugin occlusion by remote frames is probably broken.
HTMLElement* element = frameView->frame().deprecatedLocalOwner();
if (!element || !element->renderer())
continue;
RenderObject* iframeRenderer = element->renderer();
if (isHTMLIFrameElement(*element) && intersectsRect(iframeRenderer, frameRect)) {
getObjectStack(iframeRenderer, &iframeZstack);
if (iframeIsAbovePlugin(iframeZstack, pluginZstack))
addToOcclusions(toRenderBox(iframeRenderer), occlusions);
}
}
// Occlusions by top layer elements.
// FIXME: There's no handling yet for the interaction between top layer and
// iframes. For example, a plugin in the top layer will be occluded by an
// iframe. And a plugin inside an iframe in the top layer won't be respected
// as being in the top layer.
const Element* ancestor = topLayerAncestor(element);
Document* document = parentFrameView->frame().document();
const WillBeHeapVector<RefPtrWillBeMember<Element> >& elements = document->topLayerElements();
size_t start = ancestor ? elements.find(ancestor) + 1 : 0;
for (size_t i = start; i < elements.size(); ++i)
addTreeToOcclusions(elements[i]->renderer(), frameRect, occlusions);
}
bool DocumentNameCollection::elementMatches(const HTMLElement& element) const {
// Match images, forms, embeds, objects and iframes by name,
// object by id, and images by id but only if they have
// a name attribute (this very strange rule matches IE)
if (isHTMLFormElement(element) || isHTMLIFrameElement(element) ||
(isHTMLEmbedElement(element) && toHTMLEmbedElement(element).isExposed()))
return element.getNameAttribute() == m_name;
if (isHTMLObjectElement(element) && toHTMLObjectElement(element).isExposed())
return element.getNameAttribute() == m_name ||
element.getIdAttribute() == m_name;
if (isHTMLImageElement(element))
return element.getNameAttribute() == m_name ||
(element.getIdAttribute() == m_name && element.hasName());
return false;
}
static v8::Local<v8::Value> getNamedProperty(HTMLDocument* htmlDocument, const AtomicString& key, v8::Local<v8::Object> creationContext, v8::Isolate* isolate)
{
if (!htmlDocument->hasNamedItem(key) && !htmlDocument->hasExtraNamedItem(key))
return v8Undefined();
RefPtrWillBeRawPtr<DocumentNameCollection> items = htmlDocument->documentNamedItems(key);
if (items->isEmpty())
return v8Undefined();
if (items->hasExactlyOneItem()) {
HTMLElement* element = items->item(0);
ASSERT(element);
Frame* frame = isHTMLIFrameElement(*element) ? toHTMLIFrameElement(*element).contentFrame() : 0;
if (frame)
return toV8(frame->domWindow(), creationContext, isolate);
return toV8(element, creationContext, isolate);
}
return toV8(PassRefPtrWillBeRawPtr<HTMLCollection>(items.release()), creationContext, isolate);
}
PassRefPtr<LegacyWebArchive> LegacyWebArchive::create(const String& markupString, Frame* frame, const Vector<Node*>& nodes, FrameFilter* frameFilter)
{
ASSERT(frame);
const ResourceResponse& response = frame->loader().documentLoader()->response();
URL responseURL = response.url();
// it's possible to have a response without a URL here
// <rdar://problem/5454935>
if (responseURL.isNull())
responseURL = URL(ParsedURLString, emptyString());
RefPtr<ArchiveResource> mainResource = ArchiveResource::create(utf8Buffer(markupString), responseURL, response.mimeType(), "UTF-8", frame->tree().uniqueName());
Vector<PassRefPtr<LegacyWebArchive>> subframeArchives;
Vector<PassRefPtr<ArchiveResource>> subresources;
HashSet<URL> uniqueSubresources;
size_t nodesSize = nodes.size();
for (size_t i = 0; i < nodesSize; ++i) {
Node& node = *nodes[i];
Frame* childFrame;
if ((isHTMLFrameElement(node) || isHTMLIFrameElement(node) || isHTMLObjectElement(node))
&& (childFrame = toHTMLFrameOwnerElement(node).contentFrame())) {
if (frameFilter && !frameFilter->shouldIncludeSubframe(childFrame))
continue;
RefPtr<LegacyWebArchive> subframeArchive = create(childFrame->document(), frameFilter);
if (subframeArchive)
subframeArchives.append(subframeArchive);
else
LOG_ERROR("Unabled to archive subframe %s", childFrame->tree().uniqueName().string().utf8().data());
} else {
ListHashSet<URL> subresourceURLs;
node.getSubresourceURLs(subresourceURLs);
DocumentLoader* documentLoader = frame->loader().documentLoader();
ListHashSet<URL>::iterator iterEnd = subresourceURLs.end();
for (ListHashSet<URL>::iterator iter = subresourceURLs.begin(); iter != iterEnd; ++iter) {
const URL& subresourceURL = *iter;
if (uniqueSubresources.contains(subresourceURL))
continue;
uniqueSubresources.add(subresourceURL);
RefPtr<ArchiveResource> resource = documentLoader->subresource(subresourceURL);
if (resource) {
subresources.append(resource.release());
continue;
}
ResourceRequest request(subresourceURL);
#if ENABLE(CACHE_PARTITIONING)
request.setCachePartition(frame->document()->topOrigin()->cachePartition());
#endif
CachedResource* cachedResource = memoryCache()->resourceForRequest(request);
if (cachedResource) {
ResourceBuffer* data = cachedResource->resourceBuffer();
resource = ArchiveResource::create(data ? data->sharedBuffer() : 0, subresourceURL, cachedResource->response());
if (resource) {
subresources.append(resource.release());
continue;
}
}
// FIXME: should do something better than spew to console here
LOG_ERROR("Failed to archive subresource for %s", subresourceURL.string().utf8().data());
}
}
}
// Add favicon if one exists for this page, if we are archiving the entire page.
if (nodesSize && nodes[0]->isDocumentNode() && iconDatabase().isEnabled()) {
const String& iconURL = iconDatabase().synchronousIconURLForPageURL(responseURL);
if (!iconURL.isEmpty() && iconDatabase().synchronousIconDataKnownForIconURL(iconURL)) {
if (Image* iconImage = iconDatabase().synchronousIconForPageURL(responseURL, IntSize(16, 16))) {
if (RefPtr<ArchiveResource> resource = ArchiveResource::create(iconImage->data(), URL(ParsedURLString, iconURL), "image/x-icon", "", ""))
subresources.append(resource.release());
}
}
}
return create(mainResource.release(), subresources, subframeArchives);
}
void WebFrameSerializerImpl::openTagToString(
Element* element,
SerializeDomParam* param)
{
bool needSkip;
StringBuilder result;
// Do pre action for open tag.
result.append(preActionBeforeSerializeOpenTag(element, param, &needSkip));
if (needSkip)
return;
// Add open tag
result.append('<');
result.append(element->nodeName().lower());
// Find out if we need to do frame-specific link rewriting.
WebFrame* frame = nullptr;
if (element->isFrameOwnerElement()) {
frame = WebFrame::fromFrame(
toHTMLFrameOwnerElement(element)->contentFrame());
}
WebString rewrittenFrameLink;
bool shouldRewriteFrameSrc =
frame && m_delegate->rewriteFrameSource(frame, &rewrittenFrameLink);
bool didRewriteFrameSrc = false;
// Go through all attributes and serialize them.
for (const auto& it : element->attributes()) {
const QualifiedName& attrName = it.name();
String attrValue = it.value();
// Skip srcdoc attribute if we will emit src attribute (for frames).
if (shouldRewriteFrameSrc && attrName == HTMLNames::srcdocAttr)
continue;
// Rewrite the attribute value if requested.
if (element->hasLegalLinkAttribute(attrName)) {
// For links start with "javascript:", we do not change it.
if (!attrValue.startsWith("javascript:", TextCaseInsensitive)) {
// Get the absolute link.
KURL completeURL = param->document->completeURL(attrValue);
// Check whether we have a local file to link to.
WebString rewrittenURL;
if (shouldRewriteFrameSrc) {
attrValue = rewrittenFrameLink;
didRewriteFrameSrc = true;
} else if (m_delegate->rewriteLink(completeURL, &rewrittenURL)) {
attrValue = rewrittenURL;
} else {
attrValue = completeURL;
}
}
}
appendAttribute(result, param->isHTMLDocument, attrName.toString(), attrValue);
}
// For frames where link rewriting was requested, ensure that src attribute
// is written even if the original document didn't have that attribute
// (mainly needed for iframes with srcdoc, but with no src attribute).
if (shouldRewriteFrameSrc && !didRewriteFrameSrc && isHTMLIFrameElement(element)) {
appendAttribute(
result, param->isHTMLDocument, HTMLNames::srcAttr.toString(), rewrittenFrameLink);
}
// Do post action for open tag.
String addedContents = postActionAfterSerializeOpenTag(element, param);
// Complete the open tag for element when it has child/children.
if (element->hasChildren() || param->haveAddedContentsBeforeEnd)
result.append('>');
// Append the added contents generate in post action of open tag.
result.append(addedContents);
// Save the result to data buffer.
saveHTMLContentToBuffer(result.toString(), param);
}
