HTMLFormControlElement.cpp [plain text]
#include "config.h"
#include "HTMLFormControlElement.h"
#include "Autofill.h"
#include "ControlStates.h"
#include "ElementAncestorIterator.h"
#include "Event.h"
#include "EventHandler.h"
#include "EventNames.h"
#include "Frame.h"
#include "FrameView.h"
#include "HTMLFieldSetElement.h"
#include "HTMLFormElement.h"
#include "HTMLInputElement.h"
#include "HTMLLegendElement.h"
#include "HTMLTextAreaElement.h"
#include "RenderBox.h"
#include "RenderTheme.h"
#include "StyleTreeResolver.h"
#include "ValidationMessage.h"
#include <wtf/Ref.h>
#include <wtf/Vector.h>
namespace WebCore {
using namespace HTMLNames;
HTMLFormControlElement::HTMLFormControlElement(const QualifiedName& tagName, Document& document, HTMLFormElement* form)
: LabelableElement(tagName, document)
, FormAssociatedElement(form)
, m_disabled(false)
, m_isReadOnly(false)
, m_isRequired(false)
, m_valueMatchesRenderer(false)
, m_disabledByAncestorFieldset(false)
, m_dataListAncestorState(Unknown)
, m_willValidateInitialized(false)
, m_willValidate(true)
, m_isValid(true)
, m_wasChangedSinceLastFormControlChangeEvent(false)
, m_hasAutofocused(false)
{
setHasCustomStyleResolveCallbacks();
}
HTMLFormControlElement::~HTMLFormControlElement()
{
setForm(nullptr);
}
String HTMLFormControlElement::formEnctype() const
{
const AtomicString& formEnctypeAttr = attributeWithoutSynchronization(formenctypeAttr);
if (formEnctypeAttr.isNull())
return emptyString();
return FormSubmission::Attributes::parseEncodingType(formEnctypeAttr);
}
void HTMLFormControlElement::setFormEnctype(const String& value)
{
setAttributeWithoutSynchronization(formenctypeAttr, value);
}
String HTMLFormControlElement::formMethod() const
{
const AtomicString& formMethodAttr = attributeWithoutSynchronization(formmethodAttr);
if (formMethodAttr.isNull())
return emptyString();
return FormSubmission::Attributes::methodString(FormSubmission::Attributes::parseMethodType(formMethodAttr));
}
void HTMLFormControlElement::setFormMethod(const String& value)
{
setAttributeWithoutSynchronization(formmethodAttr, value);
}
bool HTMLFormControlElement::formNoValidate() const
{
return hasAttributeWithoutSynchronization(formnovalidateAttr);
}
String HTMLFormControlElement::formAction() const
{
const AtomicString& value = attributeWithoutSynchronization(formactionAttr);
if (value.isEmpty())
return document().url();
return getURLAttribute(formactionAttr);
}
void HTMLFormControlElement::setFormAction(const AtomicString& value)
{
setAttributeWithoutSynchronization(formactionAttr, value);
}
bool HTMLFormControlElement::computeIsDisabledByFieldsetAncestor() const
{
Element* previousAncestor = nullptr;
for (Element* ancestor = parentElement(); ancestor; ancestor = ancestor->parentElement()) {
if (is<HTMLFieldSetElement>(*ancestor) && ancestor->hasAttributeWithoutSynchronization(disabledAttr)) {
HTMLFieldSetElement& fieldSetAncestor = downcast<HTMLFieldSetElement>(*ancestor);
bool isInFirstLegend = is<HTMLLegendElement>(previousAncestor) && previousAncestor == fieldSetAncestor.legend();
return !isInFirstLegend;
}
previousAncestor = ancestor;
}
return false;
}
void HTMLFormControlElement::setAncestorDisabled(bool isDisabled)
{
ASSERT(computeIsDisabledByFieldsetAncestor() == isDisabled);
bool oldValue = m_disabledByAncestorFieldset;
m_disabledByAncestorFieldset = isDisabled;
if (oldValue != m_disabledByAncestorFieldset)
disabledStateChanged();
}
void HTMLFormControlElement::parseAttribute(const QualifiedName& name, const AtomicString& value)
{
if (name == formAttr)
formAttributeChanged();
else if (name == disabledAttr) {
if (canBeActuallyDisabled()) {
bool oldDisabled = m_disabled;
m_disabled = !value.isNull();
if (oldDisabled != m_disabled)
disabledAttributeChanged();
}
} else if (name == readonlyAttr) {
bool wasReadOnly = m_isReadOnly;
m_isReadOnly = !value.isNull();
if (wasReadOnly != m_isReadOnly)
readOnlyAttributeChanged();
} else if (name == requiredAttr) {
bool wasRequired = m_isRequired;
m_isRequired = !value.isNull();
if (wasRequired != m_isRequired)
requiredAttributeChanged();
} else
HTMLElement::parseAttribute(name, value);
}
void HTMLFormControlElement::disabledAttributeChanged()
{
disabledStateChanged();
}
void HTMLFormControlElement::disabledStateChanged()
{
setNeedsWillValidateCheck();
invalidateStyleForSubtree();
if (renderer() && renderer()->style().hasAppearance())
renderer()->theme().stateChanged(*renderer(), ControlStates::EnabledState);
}
void HTMLFormControlElement::readOnlyAttributeChanged()
{
setNeedsWillValidateCheck();
invalidateStyleForSubtree();
}
void HTMLFormControlElement::requiredAttributeChanged()
{
updateValidity();
invalidateStyleForSubtree();
}
static bool shouldAutofocus(HTMLFormControlElement* element)
{
if (!element->renderer())
return false;
if (!element->hasAttributeWithoutSynchronization(autofocusAttr))
return false;
if (!element->inDocument() || !element->document().renderView())
return false;
if (element->document().isSandboxed(SandboxAutomaticFeatures)) {
element->document().addConsoleMessage(MessageSource::Security, MessageLevel::Error, ASCIILiteral("Blocked autofocusing on a form control because the form's frame is sandboxed and the 'allow-scripts' permission is not set."));
return false;
}
if (element->hasAutofocused())
return false;
if (is<HTMLInputElement>(*element))
return !downcast<HTMLInputElement>(*element).isInputTypeHidden();
if (element->hasTagName(selectTag))
return true;
if (element->hasTagName(keygenTag))
return true;
if (element->hasTagName(buttonTag))
return true;
if (is<HTMLTextAreaElement>(*element))
return true;
return false;
}
void HTMLFormControlElement::didAttachRenderers()
{
if (renderer())
renderer()->updateFromElement();
if (shouldAutofocus(this)) {
setAutofocused();
RefPtr<HTMLFormControlElement> element = this;
auto* frameView = document().view();
if (frameView && frameView->isInLayout()) {
frameView->queuePostLayoutCallback([element] {
element->focus();
});
} else {
Style::queuePostResolutionCallback([element] {
element->focus();
});
}
}
}
void HTMLFormControlElement::didMoveToNewDocument(Document& oldDocument)
{
FormAssociatedElement::didMoveToNewDocument(oldDocument);
HTMLElement::didMoveToNewDocument(oldDocument);
}
static void addInvalidElementToAncestorFromInsertionPoint(const HTMLFormControlElement& element, ContainerNode* insertionPoint)
{
if (!is<Element>(insertionPoint))
return;
for (auto& ancestor : lineageOfType<HTMLFieldSetElement>(downcast<Element>(*insertionPoint)))
ancestor.addInvalidDescendant(element);
}
static void removeInvalidElementToAncestorFromInsertionPoint(const HTMLFormControlElement& element, ContainerNode* insertionPoint)
{
if (!is<Element>(insertionPoint))
return;
for (auto& ancestor : lineageOfType<HTMLFieldSetElement>(downcast<Element>(*insertionPoint)))
ancestor.removeInvalidDescendant(element);
}
Node::InsertionNotificationRequest HTMLFormControlElement::insertedInto(ContainerNode& insertionPoint)
{
m_dataListAncestorState = Unknown;
setNeedsWillValidateCheck();
if (willValidate() && !isValidFormControlElement())
addInvalidElementToAncestorFromInsertionPoint(*this, &insertionPoint);
if (document().hasDisabledFieldsetElement())
setAncestorDisabled(computeIsDisabledByFieldsetAncestor());
HTMLElement::insertedInto(insertionPoint);
FormAssociatedElement::insertedInto(insertionPoint);
return InsertionShouldCallFinishedInsertingSubtree;
}
void HTMLFormControlElement::finishedInsertingSubtree()
{
resetFormOwner();
}
void HTMLFormControlElement::removedFrom(ContainerNode& insertionPoint)
{
bool wasMatchingInvalidPseudoClass = willValidate() && !isValidFormControlElement();
m_validationMessage = nullptr;
if (m_disabledByAncestorFieldset)
setAncestorDisabled(computeIsDisabledByFieldsetAncestor());
m_dataListAncestorState = Unknown;
HTMLElement::removedFrom(insertionPoint);
FormAssociatedElement::removedFrom(insertionPoint);
if (wasMatchingInvalidPseudoClass)
removeInvalidElementToAncestorFromInsertionPoint(*this, &insertionPoint);
}
void HTMLFormControlElement::setChangedSinceLastFormControlChangeEvent(bool changed)
{
m_wasChangedSinceLastFormControlChangeEvent = changed;
}
void HTMLFormControlElement::dispatchChangeEvent()
{
dispatchScopedEvent(Event::create(eventNames().changeEvent, true, false));
}
void HTMLFormControlElement::dispatchFormControlChangeEvent()
{
dispatchChangeEvent();
setChangedSinceLastFormControlChangeEvent(false);
}
void HTMLFormControlElement::dispatchFormControlInputEvent()
{
setChangedSinceLastFormControlChangeEvent(true);
dispatchInputEvent();
}
bool HTMLFormControlElement::isDisabledFormControl() const
{
return m_disabled || m_disabledByAncestorFieldset;
}
bool HTMLFormControlElement::isRequired() const
{
return m_isRequired;
}
void HTMLFormControlElement::didRecalcStyle(Style::Change)
{
if (renderer()) {
RefPtr<HTMLFormControlElement> element = this;
Style::queuePostResolutionCallback([element]{
if (auto* renderer = element->renderer())
renderer->updateFromElement();
});
}
}
bool HTMLFormControlElement::supportsFocus() const
{
return !isDisabledFormControl();
}
bool HTMLFormControlElement::isFocusable() const
{
if (renderer() && (!is<RenderBox>(*renderer()) || downcast<RenderBox>(*renderer()).size().isEmpty()))
return false;
return HTMLElement::isFocusable();
}
bool HTMLFormControlElement::isKeyboardFocusable(KeyboardEvent& event) const
{
if (isFocusable())
if (document().frame())
return document().frame()->eventHandler().tabsToAllFormControls(&event);
return false;
}
bool HTMLFormControlElement::isMouseFocusable() const
{
#if PLATFORM(GTK)
return HTMLElement::isMouseFocusable();
#else
return false;
#endif
}
bool HTMLFormControlElement::matchesValidPseudoClass() const
{
return willValidate() && isValidFormControlElement();
}
bool HTMLFormControlElement::matchesInvalidPseudoClass() const
{
return willValidate() && !isValidFormControlElement();
}
int HTMLFormControlElement::tabIndex() const
{
return Element::tabIndex();
}
bool HTMLFormControlElement::computeWillValidate() const
{
if (m_dataListAncestorState == Unknown) {
for (ContainerNode* ancestor = parentNode(); ancestor; ancestor = ancestor->parentNode()) {
if (ancestor->hasTagName(datalistTag)) {
m_dataListAncestorState = InsideDataList;
break;
}
}
if (m_dataListAncestorState == Unknown)
m_dataListAncestorState = NotInsideDataList;
}
return m_dataListAncestorState == NotInsideDataList && !isDisabledOrReadOnly();
}
bool HTMLFormControlElement::willValidate() const
{
if (!m_willValidateInitialized || m_dataListAncestorState == Unknown) {
m_willValidateInitialized = true;
bool newWillValidate = computeWillValidate();
if (m_willValidate != newWillValidate)
m_willValidate = newWillValidate;
} else {
ASSERT(m_willValidate == computeWillValidate());
}
return m_willValidate;
}
void HTMLFormControlElement::setNeedsWillValidateCheck()
{
bool newWillValidate = computeWillValidate();
if (m_willValidateInitialized && m_willValidate == newWillValidate)
return;
bool wasValid = m_isValid;
m_willValidateInitialized = true;
m_willValidate = newWillValidate;
updateValidity();
invalidateStyleForSubtree();
if (!m_willValidate && !wasValid) {
removeInvalidElementToAncestorFromInsertionPoint(*this, parentNode());
if (HTMLFormElement* form = this->form())
form->removeInvalidAssociatedFormControlIfNeeded(*this);
}
if (!m_willValidate)
hideVisibleValidationMessage();
}
void HTMLFormControlElement::updateVisibleValidationMessage()
{
Page* page = document().page();
if (!page)
return;
String message;
if (renderer() && willValidate())
message = validationMessage().stripWhiteSpace();
if (!m_validationMessage)
m_validationMessage = std::make_unique<ValidationMessage>(this);
m_validationMessage->updateValidationMessage(message);
}
void HTMLFormControlElement::hideVisibleValidationMessage()
{
if (m_validationMessage)
m_validationMessage->requestToHideMessage();
}
bool HTMLFormControlElement::checkValidity(Vector<RefPtr<HTMLFormControlElement>>* unhandledInvalidControls)
{
if (!willValidate() || isValidFormControlElement())
return true;
Ref<HTMLFormControlElement> protectedThis(*this);
Ref<Document> originalDocument(document());
bool needsDefaultAction = dispatchEvent(Event::create(eventNames().invalidEvent, false, true));
if (needsDefaultAction && unhandledInvalidControls && inDocument() && originalDocument.ptr() == &document())
unhandledInvalidControls->append(this);
return false;
}
bool HTMLFormControlElement::reportValidity()
{
Vector<RefPtr<HTMLFormControlElement>> elements;
if (checkValidity(&elements))
return true;
if (elements.isEmpty())
return false;
document().updateLayoutIgnorePendingStylesheets();
if (inDocument() && isFocusable()) {
focusAndShowValidationMessage();
return false;
}
if (document().frame()) {
String message = makeString("An invalid form control with name='", name(), "' is not focusable.");
document().addConsoleMessage(MessageSource::Rendering, MessageLevel::Error, message);
}
return false;
}
void HTMLFormControlElement::focusAndShowValidationMessage()
{
focus();
updateVisibleValidationMessage();
}
inline bool HTMLFormControlElement::isValidFormControlElement() const
{
ASSERT(m_isValid == isValid());
return m_isValid;
}
void HTMLFormControlElement::willChangeForm()
{
if (HTMLFormElement* form = this->form())
form->removeInvalidAssociatedFormControlIfNeeded(*this);
FormAssociatedElement::willChangeForm();
}
void HTMLFormControlElement::didChangeForm()
{
FormAssociatedElement::didChangeForm();
if (HTMLFormElement* form = this->form()) {
if (m_willValidateInitialized && m_willValidate && !isValidFormControlElement())
form->registerInvalidAssociatedFormControl(*this);
}
}
void HTMLFormControlElement::updateValidity()
{
bool willValidate = this->willValidate();
bool wasValid = m_isValid;
m_isValid = isValid();
if (willValidate && m_isValid != wasValid) {
invalidateStyleForSubtree();
if (!m_isValid) {
addInvalidElementToAncestorFromInsertionPoint(*this, parentNode());
if (HTMLFormElement* form = this->form())
form->registerInvalidAssociatedFormControl(*this);
} else {
removeInvalidElementToAncestorFromInsertionPoint(*this, parentNode());
if (HTMLFormElement* form = this->form())
form->removeInvalidAssociatedFormControlIfNeeded(*this);
}
}
if (m_validationMessage && m_validationMessage->isVisible()) {
updateVisibleValidationMessage();
}
}
void HTMLFormControlElement::setCustomValidity(const String& error)
{
FormAssociatedElement::setCustomValidity(error);
updateValidity();
}
bool HTMLFormControlElement::validationMessageShadowTreeContains(const Node& node) const
{
return m_validationMessage && m_validationMessage->shadowTreeContains(node);
}
void HTMLFormControlElement::dispatchBlurEvent(RefPtr<Element>&& newFocusedElement)
{
HTMLElement::dispatchBlurEvent(WTFMove(newFocusedElement));
hideVisibleValidationMessage();
}
HTMLFormElement* HTMLFormControlElement::virtualForm() const
{
return FormAssociatedElement::form();
}
#if ENABLE(IOS_AUTOCORRECT_AND_AUTOCAPITALIZE)
bool HTMLFormControlElement::shouldAutocorrect() const
{
const AtomicString& autocorrectValue = attributeWithoutSynchronization(autocorrectAttr);
if (!autocorrectValue.isEmpty())
return !equalLettersIgnoringASCIICase(autocorrectValue, "off");
if (HTMLFormElement* form = this->form())
return form->shouldAutocorrect();
return true;
}
AutocapitalizeType HTMLFormControlElement::autocapitalizeType() const
{
AutocapitalizeType type = HTMLElement::autocapitalizeType();
if (type == AutocapitalizeTypeDefault) {
if (HTMLFormElement* form = this->form())
return form->autocapitalizeType();
}
return type;
}
#endif
HTMLFormControlElement* HTMLFormControlElement::enclosingFormControlElement(Node* node)
{
for (; node; node = node->parentNode()) {
if (is<HTMLFormControlElement>(*node))
return downcast<HTMLFormControlElement>(node);
}
return nullptr;
}
String HTMLFormControlElement::autocomplete() const
{
return autofillData().idlExposedValue;
}
void HTMLFormControlElement::setAutocomplete(const String& value)
{
setAttributeWithoutSynchronization(autocompleteAttr, value);
}
AutofillMantle HTMLFormControlElement::autofillMantle() const
{
return is<HTMLInputElement>(*this) && downcast<HTMLInputElement>(this)->isInputTypeHidden() ? AutofillMantle::Anchor : AutofillMantle::Expectation;
}
AutofillData HTMLFormControlElement::autofillData() const
{
return AutofillData::createFromHTMLFormControlElement(*this);
}
}