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/*
* Copyright (C) 1999 Lars Knoll (knoll@kde.org)
* (C) 1999 Antti Koivisto (koivisto@kde.org)
* (C) 2001 Dirk Mueller (mueller@kde.org)
* Copyright (C) 2004-2010, 2012-2016 Apple Inc. All rights reserved.
* (C) 2006 Alexey Proskuryakov (ap@nypop.com)
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Library General Public
* License as published by the Free Software Foundation; either
* version 2 of the License, or (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Library General Public License for more details.
*
* You should have received a copy of the GNU Library General Public License
* along with this library; see the file COPYING.LIB. If not, write to
* the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
* Boston, MA 02110-1301, USA.
*
*/
#include "config.h"
#include "HTMLFormElement.h"
#include "DOMFormData.h"
#include "DOMTokenList.h"
#include "DOMWindow.h"
#include "DiagnosticLoggingClient.h"
#include "Document.h"
#include "ElementIterator.h"
#include "Event.h"
#include "EventNames.h"
#include "FormController.h"
#include "FormData.h"
#include "FormDataEvent.h"
#include "Frame.h"
#include "FrameLoader.h"
#include "FrameLoaderClient.h"
#include "HTMLDialogElement.h"
#include "HTMLFieldSetElement.h"
#include "HTMLFormControlsCollection.h"
#include "HTMLImageElement.h"
#include "HTMLInputElement.h"
#include "HTMLNames.h"
#include "HTMLObjectElement.h"
#include "HTMLParserIdioms.h"
#include "HTMLTableElement.h"
#include "InputTypeNames.h"
#include "MixedContentChecker.h"
#include "NodeRareData.h"
#include "Page.h"
#include "PseudoClassChangeInvalidation.h"
#include "RadioNodeList.h"
#include "RenderTextControl.h"
#include "ScriptDisallowedScope.h"
#include "Settings.h"
#include "SubmitEvent.h"
#include "UserGestureIndicator.h"
#include <limits>
#include <wtf/IsoMallocInlines.h>
#include <wtf/Ref.h>
#include <wtf/SetForScope.h>
namespace WebCore {
WTF_MAKE_ISO_ALLOCATED_IMPL(HTMLFormElement);
using namespace HTMLNames;
struct FormRelAttributes {
bool noopener { false };
bool noreferrer { false };
bool opener { false };
};
static FormRelAttributes parseFormRelAttributes(StringView string)
{
FormRelAttributes attributes;
for (auto token : string.split(' ')) {
if (equalIgnoringASCIICase(token, "noopener"))
attributes.noopener = true;
else if (equalIgnoringASCIICase(token, "noreferrer"))
attributes.noreferrer = true;
else if (equalIgnoringASCIICase(token, "opener"))
attributes.opener = true;
}
return attributes;
}
HTMLFormElement::HTMLFormElement(const QualifiedName& tagName, Document& document)
: HTMLElement(tagName, document)
{
ASSERT(hasTagName(formTag));
}
Ref<HTMLFormElement> HTMLFormElement::create(Document& document)
{
return adoptRef(*new HTMLFormElement(formTag, document));
}
Ref<HTMLFormElement> HTMLFormElement::create(const QualifiedName& tagName, Document& document)
{
return adoptRef(*new HTMLFormElement(tagName, document));
}
HTMLFormElement::~HTMLFormElement()
{
document().formController().willDeleteForm(*this);
if (!shouldAutocomplete())
document().unregisterForDocumentSuspensionCallbacks(*this);
m_defaultButton = nullptr;
for (auto& weakElement : m_associatedElements) {
RefPtr element { weakElement.get() };
ASSERT(element);
auto* associatedElement = element->asFormAssociatedElement();
ASSERT(associatedElement);
associatedElement->formWillBeDestroyed();
}
for (auto& imageElement : m_imageElements)
imageElement->m_form = nullptr;
}
bool HTMLFormElement::formWouldHaveSecureSubmission(const String& url)
{
return document().completeURL(url).protocolIs("https");
}
bool HTMLFormElement::rendererIsNeeded(const RenderStyle& style)
{
if (!m_wasDemoted)
return HTMLElement::rendererIsNeeded(style);
auto parent = parentNode();
auto parentRenderer = parent->renderer();
if (!parentRenderer)
return false;
// FIXME: Shouldn't we also check for table caption (see |formIsTablePart| below).
bool parentIsTableElementPart = (parentRenderer->isTable() && is<HTMLTableElement>(*parent))
|| (parentRenderer->isTableRow() && parent->hasTagName(trTag))
|| (parentRenderer->isTableSection() && parent->hasTagName(tbodyTag))
|| (parentRenderer->isRenderTableCol() && parent->hasTagName(colTag))
|| (parentRenderer->isTableCell() && parent->hasTagName(trTag));
if (!parentIsTableElementPart)
return true;
DisplayType display = style.display();
bool formIsTablePart = display == DisplayType::Table || display == DisplayType::InlineTable || display == DisplayType::TableRowGroup
|| display == DisplayType::TableHeaderGroup || display == DisplayType::TableFooterGroup || display == DisplayType::TableRow
|| display == DisplayType::TableColumnGroup || display == DisplayType::TableColumn || display == DisplayType::TableCell
|| display == DisplayType::TableCaption;
return formIsTablePart;
}
Node::InsertedIntoAncestorResult HTMLFormElement::insertedIntoAncestor(InsertionType insertionType, ContainerNode& parentOfInsertedTree)
{
HTMLElement::insertedIntoAncestor(insertionType, parentOfInsertedTree);
if (insertionType.connectedToDocument)
document().didAssociateFormControl(*this);
return InsertedIntoAncestorResult::Done;
}
void HTMLFormElement::removedFromAncestor(RemovalType removalType, ContainerNode& oldParentOfRemovedTree)
{
Node& root = traverseToRootNode(); // Do not rely on rootNode() because our IsInTreeScope is outdated.
auto associatedElements = copyAssociatedElementsVector();
for (auto& associatedElement : associatedElements)
associatedElement->formOwnerRemovedFromTree(root);
HTMLElement::removedFromAncestor(removalType, oldParentOfRemovedTree);
}
unsigned HTMLFormElement::length() const
{
unsigned length = 0;
for (auto& weakElement : m_associatedElements) {
RefPtr element { weakElement.get() };
ASSERT(element);
auto* associatedElement = element->asFormAssociatedElement();
ASSERT(associatedElement);
if (associatedElement->isEnumeratable())
++length;
}
return length;
}
HTMLElement* HTMLFormElement::item(unsigned index)
{
return elements()->item(index);
}
std::optional<std::variant<RefPtr<RadioNodeList>, RefPtr<Element>>> HTMLFormElement::namedItem(const AtomString& name)
{
auto namedItems = namedElements(name);
if (namedItems.isEmpty())
return std::nullopt;
if (namedItems.size() == 1)
return std::variant<RefPtr<RadioNodeList>, RefPtr<Element>> { RefPtr<Element> { WTFMove(namedItems[0]) } };
return std::variant<RefPtr<RadioNodeList>, RefPtr<Element>> { RefPtr<RadioNodeList> { radioNodeList(name) } };
}
Vector<AtomString> HTMLFormElement::supportedPropertyNames() const
{
// FIXME: Should be implemented (only needed for enumeration with includeDontEnumProperties mode
// since this class is annotated with LegacyUnenumerableNamedProperties).
return { };
}
void HTMLFormElement::submitImplicitly(Event& event, bool fromImplicitSubmissionTrigger)
{
unsigned submissionTriggerCount = 0;
for (auto& formAssociatedElement : m_associatedElements) {
if (!is<HTMLFormControlElement>(*formAssociatedElement))
continue;
HTMLFormControlElement& formElement = downcast<HTMLFormControlElement>(*formAssociatedElement);
if (formElement.isSuccessfulSubmitButton()) {
if (formElement.renderer()) {
formElement.dispatchSimulatedClick(&event);
return;
}
} else if (formElement.canTriggerImplicitSubmission())
++submissionTriggerCount;
}
if (!submissionTriggerCount)
return;
// Older iOS apps using WebViews expect the behavior of auto submitting multi-input forms.
if (fromImplicitSubmissionTrigger && (submissionTriggerCount == 1 || document().settings().allowMultiElementImplicitSubmission()))
submitIfPossible(&event);
}
bool HTMLFormElement::validateInteractively()
{
for (auto& associatedElement : m_associatedElements) {
if (is<HTMLFormControlElement>(*associatedElement))
downcast<HTMLFormControlElement>(*associatedElement).hideVisibleValidationMessage();
}
Vector<RefPtr<HTMLFormControlElement>> unhandledInvalidControls;
if (!checkInvalidControlsAndCollectUnhandled(unhandledInvalidControls))
return true;
// Because the form has invalid controls, we abort the form submission and
// show a validation message on a focusable form control.
// Make sure layout is up-to-date in case we call isFocusable() (which
// has !renderer()->needsLayout() assertion).
ASSERT(!document().view() || !document().view()->needsLayout());
Ref<HTMLFormElement> protectedThis(*this);
// Focus on the first focusable control and show a validation message.
for (auto& control : unhandledInvalidControls) {
if (control->isConnected() && control->isFocusable()) {
control->focusAndShowValidationMessage();
break;
}
}
// Warn about all of unfocusable controls.
if (document().frame()) {
for (auto& control : unhandledInvalidControls) {
if (control->isConnected() && control->isFocusable())
continue;
auto message = makeString("An invalid form control with name='", control->name(), "' is not focusable.");
document().addConsoleMessage(MessageSource::Rendering, MessageLevel::Error, message);
}
}
return false;
}
void HTMLFormElement::submitIfPossible(Event* event, HTMLFormControlElement* submitter, FormSubmissionTrigger trigger)
{
// https://html.spec.whatwg.org/#form-submission-algorithm
if (!isConnected())
return;
RefPtr<Frame> frame = document().frame();
if (m_isSubmittingOrPreparingForSubmission || !frame)
return;
m_isSubmittingOrPreparingForSubmission = true;
m_shouldSubmit = false;
bool shouldValidate = document().page() && document().page()->settings().interactiveFormValidationEnabled() && !noValidate();
if (shouldValidate) {
RefPtr submitElement = submitter ? submitter : findSubmitter(event);
if (submitElement && submitElement->formNoValidate())
shouldValidate = false;
}
// Interactive validation must be done before dispatching the submit event.
if (shouldValidate && !validateInteractively()) {
m_isSubmittingOrPreparingForSubmission = false;
return;
}
auto targetFrame = frame->loader().findFrameForNavigation(effectiveTarget(event, submitter), &document());
if (!targetFrame)
targetFrame = frame.get();
auto formState = FormState::create(*this, textFieldValues(), document(), NotSubmittedByJavaScript);
targetFrame->loader().client().dispatchWillSendSubmitEvent(WTFMove(formState));
Ref protectedThis { *this };
auto submitEvent = SubmitEvent::create(submitter);
dispatchEvent(submitEvent);
// Event handling could have resulted in m_shouldSubmit becoming true as a side effect, too.
if (!submitEvent->defaultPrevented())
m_shouldSubmit = true;
m_isSubmittingOrPreparingForSubmission = false;
if (m_shouldSubmit)
submit(event, true, !submitter, trigger, submitter);
}
void HTMLFormElement::submit()
{
submit(nullptr, false, true, NotSubmittedByJavaScript);
}
void HTMLFormElement::submitFromJavaScript()
{
submit(nullptr, false, UserGestureIndicator::processingUserGesture(), SubmittedByJavaScript);
}
ExceptionOr<void> HTMLFormElement::requestSubmit(HTMLElement* submitter)
{
// Update layout before processing form actions in case the style changes
// the form or button relationships.
document().updateLayoutIgnorePendingStylesheets();
RefPtr<HTMLFormControlElement> control;
if (submitter) {
// https://html.spec.whatwg.org/multipage/forms.html#dom-form-requestsubmit
if (!is<HTMLFormControlElement>(submitter))
return Exception { TypeError };
control = downcast<HTMLFormControlElement>(submitter);
if (!control->isSubmitButton())
return Exception { TypeError };
if (control->form() != this)
return Exception { NotFoundError };
}
submitIfPossible(nullptr, control.get(), SubmittedByJavaScript);
return { };
}
StringPairVector HTMLFormElement::textFieldValues() const
{
StringPairVector result;
result.reserveInitialCapacity(m_associatedElements.size());
for (auto& weakElement : m_associatedElements) {
RefPtr element { weakElement.get() };
if (!is<HTMLInputElement>(element))
continue;
auto& input = downcast<HTMLInputElement>(*element);
if (!input.isTextField())
continue;
result.uncheckedAppend({ input.name().string(), input.value() });
}
return result;
}
RefPtr<HTMLFormControlElement> HTMLFormElement::findSubmitButton(HTMLFormControlElement* submitter, bool needButtonActivation)
{
if (submitter)
return submitter;
if (!needButtonActivation)
return nullptr;
RefPtr<HTMLFormControlElement> firstSuccessfulSubmitButton;
for (auto& associatedElement : m_associatedElements) {
if (!is<HTMLFormControlElement>(*associatedElement))
continue;
auto& control = downcast<HTMLFormControlElement>(*associatedElement);
if (control.isActivatedSubmit())
return nullptr;
if (!firstSuccessfulSubmitButton && control.isSuccessfulSubmitButton())
firstSuccessfulSubmitButton = &control;
}
return firstSuccessfulSubmitButton;
}
void HTMLFormElement::submit(Event* event, bool activateSubmitButton, bool processingUserGesture, FormSubmissionTrigger trigger, HTMLFormControlElement* submitter)
{
// The submitIfPossible function also does this check, but we need to do it here
// too, since there are some code paths that bypass that function.
if (!isConnected())
return;
if (m_isConstructingEntryList)
return;
RefPtr<FrameView> view = document().view();
RefPtr<Frame> frame = document().frame();
if (!view || !frame)
return;
if (m_isSubmittingOrPreparingForSubmission) {
m_shouldSubmit = true;
return;
}
m_isSubmittingOrPreparingForSubmission = true;
m_wasUserSubmitted = processingUserGesture;
auto firstSuccessfulSubmitButton = findSubmitButton(submitter, activateSubmitButton);
if (firstSuccessfulSubmitButton)
firstSuccessfulSubmitButton->setActivatedSubmit(true);
Ref protectedThis { *this }; // Form submission can execute arbitary JavaScript.
auto shouldLockHistory = processingUserGesture ? LockHistory::No : LockHistory::Yes;
auto formSubmission = FormSubmission::create(*this, submitter, m_attributes, event, shouldLockHistory, trigger);
if (!isConnected())
return;
auto relAttributes = parseFormRelAttributes(getAttribute(HTMLNames::relAttr));
if (relAttributes.noopener || relAttributes.noreferrer || (!relAttributes.opener && document().settings().blankAnchorTargetImpliesNoOpenerEnabled() && isBlankTargetFrameName(formSubmission->target()) && !formSubmission->requestURL().protocolIsJavaScript()))
formSubmission->setNewFrameOpenerPolicy(NewFrameOpenerPolicy::Suppress);
if (relAttributes.noreferrer)
formSubmission->setReferrerPolicy(ReferrerPolicy::NoReferrer);
if (m_plannedFormSubmission)
m_plannedFormSubmission->cancel();
m_plannedFormSubmission = formSubmission;
if (document().settings().dialogElementEnabled() && formSubmission->method() == FormSubmission::Method::Dialog)
submitDialog(WTFMove(formSubmission));
else
frame->loader().submitForm(WTFMove(formSubmission));
if (firstSuccessfulSubmitButton)
firstSuccessfulSubmitButton->setActivatedSubmit(false);
m_shouldSubmit = false;
m_isSubmittingOrPreparingForSubmission = false;
}
// https://html.spec.whatwg.org/#submit-dialog
void HTMLFormElement::submitDialog(Ref<FormSubmission>&& formSubmission)
{
// Let subject be the nearest ancestor dialog element of form, if any.
RefPtr dialog = ancestorsOfType<HTMLDialogElement>(*this).first();
// If there isn't one, or if it does not have an open attribute, do nothing.
if (!dialog || !dialog->isOpen())
return;
// Then, close the dialog subject. If there is a result, let that be the return value.
dialog->close(formSubmission->returnValue());
}
void HTMLFormElement::reset()
{
if (m_isInResetFunction)
return;
RefPtr<Frame> protectedFrame = document().frame();
if (!protectedFrame)
return;
Ref<HTMLFormElement> protectedThis(*this);
SetForScope<bool> isInResetFunctionRestorer(m_isInResetFunction, true);
auto event = Event::create(eventNames().resetEvent, Event::CanBubble::Yes, Event::IsCancelable::Yes);
dispatchEvent(event);
if (!event->defaultPrevented())
resetAssociatedFormControlElements();
}
void HTMLFormElement::resetAssociatedFormControlElements()
{
// Event handling can cause associated elements to be added or deleted while iterating
// over this collection. Protect these elements until we are done notifying them of
// the reset operation.
Vector<Ref<HTMLFormControlElement>> associatedFormControlElements;
associatedFormControlElements.reserveInitialCapacity(m_associatedElements.size());
for (auto& weakElement : m_associatedElements) {
auto* element = weakElement.get();
ASSERT(element);
if (is<HTMLFormControlElement>(element))
associatedFormControlElements.uncheckedAppend(downcast<HTMLFormControlElement>(*element));
}
for (auto& associatedFormControlElement : associatedFormControlElements)
associatedFormControlElement->reset();
}
#if ENABLE(AUTOCORRECT)
// FIXME: We should look to share this code with class HTMLFormControlElement instead of duplicating the logic.
bool HTMLFormElement::shouldAutocorrect() const
{
const AtomString& autocorrectValue = attributeWithoutSynchronization(autocorrectAttr);
if (!autocorrectValue.isEmpty())
return !equalLettersIgnoringASCIICase(autocorrectValue, "off");
if (RefPtr<HTMLFormElement> form = this->form())
return form->shouldAutocorrect();
return true;
}
#endif
void HTMLFormElement::parseAttribute(const QualifiedName& name, const AtomString& value)
{
if (name == actionAttr) {
m_attributes.parseAction(value);
if (!m_attributes.action().isEmpty()) {
if (RefPtr<Frame> f = document().frame()) {
Frame& topFrame = f->tree().top();
MixedContentChecker::checkFormForMixedContent(topFrame, topFrame.document()->securityOrigin(), document().completeURL(m_attributes.action()));
}
}
} else if (name == targetAttr)
m_attributes.setTarget(value);
else if (name == methodAttr)
m_attributes.updateMethodType(value, document().settings().dialogElementEnabled());
else if (name == enctypeAttr)
m_attributes.updateEncodingType(value);
else if (name == accept_charsetAttr)
m_attributes.setAcceptCharset(value);
else if (name == autocompleteAttr) {
if (!shouldAutocomplete())
document().registerForDocumentSuspensionCallbacks(*this);
else
document().unregisterForDocumentSuspensionCallbacks(*this);
} else if (name == relAttr) {
if (m_relList)
m_relList->associatedAttributeValueChanged(value);
} else
HTMLElement::parseAttribute(name, value);
}
unsigned HTMLFormElement::formElementIndexWithFormAttribute(Element* element, unsigned rangeStart, unsigned rangeEnd)
{
if (m_associatedElements.isEmpty())
return 0;
ASSERT(rangeStart <= rangeEnd);
if (rangeStart == rangeEnd)
return rangeStart;
unsigned left = rangeStart;
unsigned right = rangeEnd - 1;
unsigned short position;
// Does binary search on m_associatedElements in order to find the index
// to be inserted.
while (left != right) {
unsigned middle = left + ((right - left) / 2);
ASSERT(middle < m_associatedElementsBeforeIndex || middle >= m_associatedElementsAfterIndex);
position = element->compareDocumentPosition(*m_associatedElements[middle]);
if (position & DOCUMENT_POSITION_FOLLOWING)
right = middle;
else
left = middle + 1;
}
ASSERT(left < m_associatedElementsBeforeIndex || left >= m_associatedElementsAfterIndex);
position = element->compareDocumentPosition(*m_associatedElements[left]);
if (position & DOCUMENT_POSITION_FOLLOWING)
return left;
return left + 1;
}
unsigned HTMLFormElement::formElementIndex(FormAssociatedElement* associatedElement)
{
ASSERT(associatedElement);
HTMLElement& associatedHTMLElement = associatedElement->asHTMLElement();
// Treats separately the case where this element has the form attribute
// for performance consideration.
if (associatedHTMLElement.hasAttributeWithoutSynchronization(formAttr) && associatedHTMLElement.isConnected()) {
unsigned short position = compareDocumentPosition(associatedHTMLElement);
ASSERT(!(position & DOCUMENT_POSITION_DISCONNECTED));
if (position & DOCUMENT_POSITION_PRECEDING) {
++m_associatedElementsBeforeIndex;
++m_associatedElementsAfterIndex;
return HTMLFormElement::formElementIndexWithFormAttribute(&associatedHTMLElement, 0, m_associatedElementsBeforeIndex - 1);
}
if (position & DOCUMENT_POSITION_FOLLOWING && !(position & DOCUMENT_POSITION_CONTAINED_BY))
return HTMLFormElement::formElementIndexWithFormAttribute(&associatedHTMLElement, m_associatedElementsAfterIndex, m_associatedElements.size());
}
unsigned currentAssociatedElementsAfterIndex = m_associatedElementsAfterIndex;
++m_associatedElementsAfterIndex;
if (!associatedHTMLElement.isDescendantOf(*this))
return currentAssociatedElementsAfterIndex;
auto descendants = descendantsOfType<HTMLElement>(*this);
// Check for the special case where this element is the very last thing in
// the form's tree of children; we don't want to walk the entire tree in that
// common case that occurs during parsing; instead we'll just return a value
// that says "add this form element to the end of the array".
if (!++descendants.beginAt(associatedHTMLElement))
return currentAssociatedElementsAfterIndex;
unsigned i = m_associatedElementsBeforeIndex;
for (auto& element : descendants) {
if (&element == &associatedHTMLElement)
return i;
if (!is<HTMLFormControlElement>(element) && !is<HTMLObjectElement>(element))
continue;
if (element.form() != this)
continue;
++i;
}
return currentAssociatedElementsAfterIndex;
}
void HTMLFormElement::registerFormElement(FormAssociatedElement* e)
{
m_associatedElements.insert(formElementIndex(e), e->asHTMLElement());
if (is<HTMLFormControlElement>(e)) {
HTMLFormControlElement& control = downcast<HTMLFormControlElement>(*e);
if (control.isSuccessfulSubmitButton()) {
if (!m_defaultButton)
control.invalidateStyleForSubtree();
else
resetDefaultButton();
}
}
}
void HTMLFormElement::removeFormElement(FormAssociatedElement* e)
{
unsigned index = m_associatedElements.find(&e->asHTMLElement());
ASSERT(index < m_associatedElements.size());
if (index < m_associatedElementsBeforeIndex)
--m_associatedElementsBeforeIndex;
if (index < m_associatedElementsAfterIndex)
--m_associatedElementsAfterIndex;
removeFromPastNamesMap(e);
m_associatedElements.remove(index);
if (auto* nodeLists = this->nodeLists())
nodeLists->invalidateCaches();
if (e == m_defaultButton)
resetDefaultButton();
}
void HTMLFormElement::registerInvalidAssociatedFormControl(const HTMLFormControlElement& formControlElement)
{
ASSERT_WITH_MESSAGE(!is<HTMLFieldSetElement>(formControlElement), "FieldSet are never candidates for constraint validation.");
ASSERT(static_cast<const Element&>(formControlElement).matchesInvalidPseudoClass());
std::optional<Style::PseudoClassChangeInvalidation> styleInvalidation;
if (m_invalidAssociatedFormControls.computesEmpty())
emplace(styleInvalidation, *this, { { CSSSelector::PseudoClassValid, false }, { CSSSelector::PseudoClassInvalid, true } });
m_invalidAssociatedFormControls.add(const_cast<HTMLFormControlElement&>(formControlElement));
}
void HTMLFormElement::removeInvalidAssociatedFormControlIfNeeded(const HTMLFormControlElement& formControlElement)
{
if (!m_invalidAssociatedFormControls.contains(formControlElement))
return;
std::optional<Style::PseudoClassChangeInvalidation> styleInvalidation;
if (m_invalidAssociatedFormControls.computeSize() == 1)
emplace(styleInvalidation, *this, { { CSSSelector::PseudoClassValid, true }, { CSSSelector::PseudoClassInvalid, false } });
m_invalidAssociatedFormControls.remove(formControlElement);
}
bool HTMLFormElement::isURLAttribute(const Attribute& attribute) const
{
return attribute.name() == actionAttr || HTMLElement::isURLAttribute(attribute);
}
void HTMLFormElement::registerImgElement(HTMLImageElement* e)
{
ASSERT(m_imageElements.find(e) == notFound);
m_imageElements.append(e);
}
void HTMLFormElement::removeImgElement(HTMLImageElement* e)
{
removeFromPastNamesMap(e);
bool removed = m_imageElements.removeFirst(e);
ASSERT_UNUSED(removed, removed);
}
Ref<HTMLFormControlsCollection> HTMLFormElement::elements()
{
return ensureRareData().ensureNodeLists().addCachedCollection<HTMLFormControlsCollection>(*this, FormControls);
}
Ref<HTMLCollection> HTMLFormElement::elementsForNativeBindings()
{
return elements();
}
String HTMLFormElement::name() const
{
return getNameAttribute();
}
bool HTMLFormElement::noValidate() const
{
return hasAttributeWithoutSynchronization(novalidateAttr);
}
String HTMLFormElement::action() const
{
auto& value = attributeWithoutSynchronization(actionAttr);
if (value.isEmpty())
return document().url().string();
return document().completeURL(stripLeadingAndTrailingHTMLSpaces(value)).string();
}
void HTMLFormElement::setAction(const String& value)
{
setAttributeWithoutSynchronization(actionAttr, value);
}
void HTMLFormElement::setEnctype(const String& value)
{
setAttributeWithoutSynchronization(enctypeAttr, value);
}
String HTMLFormElement::method() const
{
return FormSubmission::Attributes::methodString(m_attributes.method(), document().settings().dialogElementEnabled());
}
void HTMLFormElement::setMethod(const String& value)
{
setAttributeWithoutSynchronization(methodAttr, value);
}
DOMTokenList& HTMLFormElement::relList()
{
if (!m_relList) {
m_relList = makeUnique<DOMTokenList>(*this, HTMLNames::relAttr, [](Document&, StringView token) {
return equalIgnoringASCIICase(token, "noreferrer") || equalIgnoringASCIICase(token, "noopener") || equalIgnoringASCIICase(token, "opener");
});
}
return *m_relList;
}
String HTMLFormElement::target() const
{
return attributeWithoutSynchronization(targetAttr);
}
String HTMLFormElement::effectiveTarget(const Event* event, HTMLFormControlElement* overrideSubmitter) const
{
if (RefPtr submitter = overrideSubmitter ? overrideSubmitter : findSubmitter(event)) {
auto targetValue = submitter->attributeWithoutSynchronization(formtargetAttr);
if (!targetValue.isNull())
return targetValue;
}
auto targetValue = target();
if (!targetValue.isNull())
return targetValue;
return document().baseTarget();
}
bool HTMLFormElement::wasUserSubmitted() const
{
return m_wasUserSubmitted;
}
HTMLFormControlElement* HTMLFormElement::findSubmitter(const Event* event) const
{
if (!event || !is<Node>(event->target()))
return nullptr;
auto& node = downcast<Node>(*event->target());
auto* element = is<Element>(node) ? &downcast<Element>(node) : node.parentElement();
return element ? lineageOfType<HTMLFormControlElement>(*element).first() : nullptr;
}
HTMLFormControlElement* HTMLFormElement::defaultButton() const
{
if (m_defaultButton)
return m_defaultButton.get();
for (auto& associatedElement : m_associatedElements) {
if (!is<HTMLFormControlElement>(*associatedElement))
continue;
HTMLFormControlElement& control = downcast<HTMLFormControlElement>(*associatedElement);
if (control.isSuccessfulSubmitButton()) {
m_defaultButton = control;
return &control;
}
}
return nullptr;
}
void HTMLFormElement::resetDefaultButton()
{
if (!m_defaultButton) {
// Computing the default button is not cheap, we don't want to do it unless needed.
// If there was no default button set, the only style to invalidate is the element
// being added to the form. This is done explicitly in registerFormElement().
return;
}
ScriptDisallowedScope::InMainThread scriptDisallowedScope;
auto oldDefault = WTFMove(m_defaultButton);
defaultButton();
if (m_defaultButton != oldDefault) {
if (oldDefault)
oldDefault->invalidateStyleForSubtree();
if (m_defaultButton)
m_defaultButton->invalidateStyleForSubtree();
}
}
bool HTMLFormElement::checkValidity()
{
Vector<RefPtr<HTMLFormControlElement>> controls;
return !checkInvalidControlsAndCollectUnhandled(controls);
}
bool HTMLFormElement::checkInvalidControlsAndCollectUnhandled(Vector<RefPtr<HTMLFormControlElement>>& unhandledInvalidControls)
{
Ref<HTMLFormElement> protectedThis(*this);
// Copy m_associatedElements because event handlers called from
// HTMLFormControlElement::checkValidity() might change m_associatedElements.
auto elements = copyAssociatedElementsVector();
bool hasInvalidControls = false;
for (auto& element : elements) {
if (element->form() == this && is<HTMLFormControlElement>(element)) {
HTMLFormControlElement& control = downcast<HTMLFormControlElement>(element.get());
if (!control.checkValidity(&unhandledInvalidControls) && control.form() == this)
hasInvalidControls = true;
}
}
return hasInvalidControls;
}
bool HTMLFormElement::reportValidity()
{
Ref<HTMLFormElement> protectedThis(*this);
// Update layout before processing form actions in case the style changes
// the form or button relationships.
document().updateLayoutIgnorePendingStylesheets();
return validateInteractively();
}
#if ASSERT_ENABLED
void HTMLFormElement::assertItemCanBeInPastNamesMap(FormNamedItem* item) const
{
ASSERT(item);
HTMLElement& element = item->asHTMLElement();
ASSERT(element.form() == this);
if (item->isFormAssociatedElement()) {
ASSERT(m_associatedElements.find(&element) != notFound);
return;
}
ASSERT(element.hasTagName(imgTag));
ASSERT(m_imageElements.find(&downcast<HTMLImageElement>(element)) != notFound);
}
#endif
RefPtr<HTMLElement> HTMLFormElement::elementFromPastNamesMap(const AtomString& pastName) const
{
if (pastName.isEmpty() || m_pastNamesMap.isEmpty())
return nullptr;
auto weakElement = m_pastNamesMap.get(pastName);
if (!weakElement)
return nullptr;
RefPtr element { weakElement.get() };
#if ASSERT_ENABLED
assertItemCanBeInPastNamesMap(element->asFormNamedItem());
#endif
return element;
}
void HTMLFormElement::addToPastNamesMap(FormNamedItem* item, const AtomString& pastName)
{
#if ASSERT_ENABLED
assertItemCanBeInPastNamesMap(item);
#endif
if (pastName.isEmpty())
return;
m_pastNamesMap.set(pastName.impl(), item->asHTMLElement());
}
void HTMLFormElement::removeFromPastNamesMap(FormNamedItem* item)
{
ASSERT(item);
if (m_pastNamesMap.isEmpty())
return;
m_pastNamesMap.removeIf([&element = item->asHTMLElement()] (auto& iterator) {
return iterator.value == &element;
});
}
bool HTMLFormElement::matchesValidPseudoClass() const
{
return m_invalidAssociatedFormControls.computesEmpty();
}
bool HTMLFormElement::matchesInvalidPseudoClass() const
{
return !matchesValidPseudoClass();
}
// FIXME: Use Ref<HTMLElement> for the function result since there are no non-HTML elements returned here.
Vector<Ref<Element>> HTMLFormElement::namedElements(const AtomString& name)
{
// http://www.whatwg.org/specs/web-apps/current-work/multipage/forms.html#dom-form-nameditem
Vector<Ref<Element>> namedItems = elements()->namedItems(name);
auto elementFromPast = elementFromPastNamesMap(name);
if (namedItems.size() == 1 && namedItems.first().ptr() != elementFromPast)
addToPastNamesMap(downcast<HTMLElement>(namedItems.first().get()).asFormNamedItem(), name);
else if (elementFromPast && namedItems.isEmpty())
namedItems.append(*elementFromPast);
return namedItems;
}
void HTMLFormElement::resumeFromDocumentSuspension()
{
ASSERT(!shouldAutocomplete());
document().postTask([formElement = Ref { *this }] (ScriptExecutionContext&) {
formElement->resetAssociatedFormControlElements();
});
}
void HTMLFormElement::didMoveToNewDocument(Document& oldDocument, Document& newDocument)
{
if (!shouldAutocomplete()) {
oldDocument.unregisterForDocumentSuspensionCallbacks(*this);
newDocument.registerForDocumentSuspensionCallbacks(*this);
}
HTMLElement::didMoveToNewDocument(oldDocument, newDocument);
}
bool HTMLFormElement::shouldAutocomplete() const
{
return !equalLettersIgnoringASCIICase(attributeWithoutSynchronization(autocompleteAttr), "off");
}
void HTMLFormElement::finishParsingChildren()
{
HTMLElement::finishParsingChildren();
document().formController().restoreControlStateIn(*this);
}
const Vector<WeakPtr<HTMLElement>>& HTMLFormElement::unsafeAssociatedElements() const
{
ASSERT(ScriptDisallowedScope::InMainThread::hasDisallowedScope());
return m_associatedElements;
}
Vector<Ref<FormAssociatedElement>> HTMLFormElement::copyAssociatedElementsVector() const
{
return WTF::map(m_associatedElements, [] (auto& weakElement) {
RefPtr element { weakElement.get() };
ASSERT(element);
auto* formAssociatedElement = element->asFormAssociatedElement();
ASSERT(formAssociatedElement);
return Ref<FormAssociatedElement>(*formAssociatedElement);
});
}
void HTMLFormElement::copyNonAttributePropertiesFromElement(const Element& source)
{
m_wasDemoted = static_cast<const HTMLFormElement&>(source).m_wasDemoted;
HTMLElement::copyNonAttributePropertiesFromElement(source);
}
HTMLFormElement* HTMLFormElement::findClosestFormAncestor(const Element& startElement)
{
return const_cast<HTMLFormElement*>(ancestorsOfType<HTMLFormElement>(startElement).first());
}
void HTMLFormElement::setAutocomplete(const AtomString& value)
{
setAttributeWithoutSynchronization(autocompleteAttr, value);
}
const AtomString& HTMLFormElement::autocomplete() const
{
static MainThreadNeverDestroyed<const AtomString> on("on", AtomString::ConstructFromLiteral);
static MainThreadNeverDestroyed<const AtomString> off("off", AtomString::ConstructFromLiteral);
return equalIgnoringASCIICase(attributeWithoutSynchronization(autocompleteAttr), "off") ? off : on;
}
RefPtr<DOMFormData> HTMLFormElement::constructEntryList(Ref<DOMFormData>&& domFormData, StringPairVector* formValues)
{
// https://html.spec.whatwg.org/multipage/form-control-infrastructure.html#constructing-form-data-set
ASSERT(isMainThread());
if (m_isConstructingEntryList)
return nullptr;
SetForScope<bool> isConstructingEntryListScope(m_isConstructingEntryList, true);
for (auto& control : this->copyAssociatedElementsVector()) {
auto& element = control->asHTMLElement();
if (!element.isDisabledFormControl())
control->appendFormData(domFormData.get());
if (formValues && is<HTMLInputElement>(element)) {
auto& input = downcast<HTMLInputElement>(element);
if (input.isTextField()) {
formValues->append({ input.name(), input.value() });
input.addSearchResult();
}
}
}
dispatchEvent(FormDataEvent::create(eventNames().formdataEvent, Event::CanBubble::Yes, Event::IsCancelable::No, Event::IsComposed::No, domFormData.copyRef()));
return domFormData->clone();
}
} // namespace