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HTMLDetailsElement.cpp
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257 lines (222 loc) · 9.77 KB
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/*
* Copyright (C) 2010, 2011 Nokia Corporation and/or its subsidiary(-ies)
* Copyright (C) 2018 Apple Inc. All rights reserved.
*
* 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 "HTMLDetailsElement.h"
#include "AXObjectCache.h"
#include "ContainerNodeInlines.h"
#include "DocumentView.h"
#include "ElementChildIteratorInlines.h"
#include "ElementRareData.h"
#include "EventLoop.h"
#include "EventNames.h"
#include "HTMLSlotElement.h"
#include "HTMLStyleElement.h"
#include "HTMLSummaryElement.h"
#include "LocalizedStrings.h"
#include "MouseEvent.h"
#include "PseudoClassChangeInvalidation.h"
#include "ScriptDisallowedScope.h"
#include "ShadowRoot.h"
#include "ShouldNotFireMutationEventsScope.h"
#include "SlotAssignment.h"
#include "Text.h"
#include "ToggleEvent.h"
#include "ToggleEventTask.h"
#include "TypedElementDescendantIteratorInlines.h"
#include "UserAgentParts.h"
#include "UserAgentStyle.h"
#include "UserAgentStyleSheets.h"
#include <wtf/NeverDestroyed.h>
#include <wtf/TZoneMallocInlines.h>
namespace WebCore {
WTF_MAKE_TZONE_ALLOCATED_IMPL(HTMLDetailsElement);
using namespace HTMLNames;
static const AtomString& summarySlotName()
{
static MainThreadNeverDestroyed<const AtomString> summarySlot("summarySlot"_s);
return summarySlot;
}
class DetailsSlotAssignment final : public NamedSlotAssignment {
private:
void hostChildElementDidChange(const Element&, ShadowRoot&) override;
const AtomString& NODELETE slotNameForHostChild(const Node&) const override;
};
void DetailsSlotAssignment::hostChildElementDidChange(const Element& childElement, ShadowRoot& shadowRoot)
{
if (is<HTMLSummaryElement>(childElement)) {
// Don't check whether this is the first summary element
// since we don't know the answer when this function is called inside Element::removedFrom.
didChangeSlot(summarySlotName(), shadowRoot);
if (RefPtr associatedDetails = dynamicDowncast<HTMLDetailsElement>(shadowRoot.host())) {
if (CheckedPtr cache = protect(associatedDetails->document())->existingAXObjectCache())
cache->onDetailsSummarySlotChange(*associatedDetails);
}
} else
didChangeSlot(NamedSlotAssignment::defaultSlotName(), shadowRoot);
}
SUPPRESS_NODELETE const AtomString& NODELETE DetailsSlotAssignment::slotNameForHostChild(const Node& child) const
{
Ref details = downcast<HTMLDetailsElement>(*child.parentNode());
// The first summary child gets assigned to the summary slot.
if (is<HTMLSummaryElement>(child)) {
if (&child == childrenOfType<HTMLSummaryElement>(details).first())
return summarySlotName();
}
return NamedSlotAssignment::defaultSlotName();
}
Ref<HTMLDetailsElement> HTMLDetailsElement::create(const QualifiedName& tagName, Document& document)
{
auto details = adoptRef(*new HTMLDetailsElement(tagName, document));
details->addShadowRoot(ShadowRoot::create(document, makeUnique<DetailsSlotAssignment>()));
return details;
}
HTMLDetailsElement::HTMLDetailsElement(const QualifiedName& tagName, Document& document)
: HTMLElement(tagName, document)
{
ASSERT(hasTagName(detailsTag));
}
HTMLDetailsElement::~HTMLDetailsElement() = default;
void HTMLDetailsElement::didAddUserAgentShadowRoot(ShadowRoot& root)
{
Ref document = this->document();
Ref summarySlot = HTMLSlotElement::create(slotTag, document);
ScriptDisallowedScope::EventAllowedScope summarySlotScope { summarySlot };
summarySlot->setAttributeWithoutSynchronization(nameAttr, summarySlotName());
Ref defaultSummary = HTMLSummaryElement::create(summaryTag, document);
ScriptDisallowedScope::EventAllowedScope defaultSummaryScope { defaultSummary };
defaultSummary->appendChild(Text::create(document, defaultDetailsSummaryText()));
m_defaultSummary = defaultSummary.get();
summarySlot->appendChild(defaultSummary);
ScriptDisallowedScope::EventAllowedScope rootScope { root };
root.appendChild(summarySlot);
m_summarySlot = WTF::move(summarySlot);
Ref defaultSlot = HTMLSlotElement::create(slotTag, document);
ScriptDisallowedScope::EventAllowedScope defaultSlotScope { defaultSlot };
defaultSlot->setUserAgentPart(UserAgentParts::detailsContent());
ASSERT(!hasAttributeWithoutSynchronization(openAttr));
defaultSlot->setInlineStyleProperty(CSSPropertyContentVisibility, CSSValueHidden);
defaultSlot->setInlineStyleProperty(CSSPropertyDisplay, CSSValueBlock);
root.appendChild(defaultSlot);
m_defaultSlot = WTF::move(defaultSlot);
static MainThreadNeverDestroyed<const String> stylesheet(StringImpl::createWithoutCopying(detailsElementShadowUserAgentStyleSheet));
Ref style = HTMLStyleElement::create(document);
ScriptDisallowedScope::EventAllowedScope styleScope { style };
style->setTextContent(String { stylesheet });
root.appendChild(WTF::move(style));
}
bool HTMLDetailsElement::isActiveSummary(const HTMLSummaryElement& summary) const
{
RefPtr summarySlot = m_summarySlot.get();
if (!summarySlot->assignedNodes())
return &summary == m_defaultSummary;
if (summary.parentNode() != this)
return false;
RefPtr slot = shadowRoot()->findAssignedSlot(summary);
return slot && slot == summarySlot.get();
}
void HTMLDetailsElement::queueDetailsToggleEventTask(ToggleState oldState, ToggleState newState)
{
if (!m_toggleEventTask)
m_toggleEventTask = ToggleEventTask::create(*this);
RefPtr { m_toggleEventTask }->queue(oldState, newState, nullptr);
}
void HTMLDetailsElement::attributeChanged(const QualifiedName& name, const AtomString& oldValue, const AtomString& newValue, AttributeModificationReason attributeModificationReason)
{
HTMLElement::attributeChanged(name, oldValue, newValue, attributeModificationReason);
if (name == openAttr) {
if (oldValue != newValue) {
RefPtr root = shadowRoot();
RefPtr defaultSlot = m_defaultSlot;
ASSERT(root);
auto isOpen = !newValue.isNull();
Style::PseudoClassChangeInvalidation styleInvalidation(*this, CSSSelector::PseudoClass::Open, isOpen);
m_isOpen = isOpen;
if (!newValue.isNull()) {
defaultSlot->removeInlineStyleProperty(CSSPropertyContentVisibility);
queueDetailsToggleEventTask(ToggleState::Closed, ToggleState::Open);
if (!attributeWithoutSynchronization(nameAttr).isEmpty()) {
ShouldNotFireMutationEventsScope scope(document());
for (auto& otherDetailsElement : otherElementsInNameGroup())
otherDetailsElement->removeAttribute(openAttr);
}
} else {
defaultSlot->setInlineStyleProperty(CSSPropertyContentVisibility, CSSValueHidden);
queueDetailsToggleEventTask(ToggleState::Open, ToggleState::Closed);
}
}
} else if (name == nameAttr)
ensureDetailsExclusivityAfterMutation();
}
Node::NeedsPostConnectionSteps HTMLDetailsElement::insertionSteps(InsertionType insertionType, ContainerNode& parentOfInsertedTree)
{
HTMLElement::insertionSteps(insertionType, parentOfInsertedTree);
m_shouldCloseElementAfterInsertion = shouldClose();
if (!insertionType.connectedToDocument)
return NeedsPostConnectionSteps::No;
return NeedsPostConnectionSteps::Yes;
}
void HTMLDetailsElement::postConnectionSteps()
{
// FIXME: Spec makes this DOM mutation synchronously in "insertion steps"
// but our current model of insertionSteps is not compatible with that.
if (hasAttributeWithoutSynchronization(openAttr) && m_shouldCloseElementAfterInsertion) {
ShouldNotFireMutationEventsScope scope(document());
toggleOpen();
}
m_shouldCloseElementAfterInsertion = false;
}
Vector<Ref<HTMLDetailsElement>> HTMLDetailsElement::otherElementsInNameGroup() const
{
Vector<Ref<HTMLDetailsElement>> otherElementsInNameGroup;
const auto& detailElementName = attributeWithoutSynchronization(nameAttr);
for (Ref element : descendantsOfType<HTMLDetailsElement>(rootNode())) {
if (element.ptr() != this && element->attributeWithoutSynchronization(nameAttr) == detailElementName)
otherElementsInNameGroup.append(WTF::move(element));
}
return otherElementsInNameGroup;
}
void HTMLDetailsElement::ensureDetailsExclusivityAfterMutation()
{
if (!shouldClose())
return;
ShouldNotFireMutationEventsScope scope(document());
toggleOpen();
}
bool HTMLDetailsElement::shouldClose() const
{
const auto& detailElementName = attributeWithoutSynchronization(nameAttr);
if (hasAttributeWithoutSynchronization(openAttr) && !detailElementName.isEmpty()) {
for (auto& otherElement : otherElementsInNameGroup()) {
if (otherElement->hasAttributeWithoutSynchronization(openAttr))
return true;
}
}
return false;
}
void HTMLDetailsElement::toggleOpen()
{
setBooleanAttribute(HTMLNames::openAttr, !hasAttributeWithoutSynchronization(HTMLNames::openAttr));
}
bool HTMLDetailsElement::isOpen() const
{
return m_isOpen;
}
} // namespace WebCore