182 lines
6.3 KiB
C++
182 lines
6.3 KiB
C++
/*
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* Copyright (C) 2011 Google Inc. All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions are
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* met:
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*
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* * Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* * Neither the name of Google Inc. nor the names of its
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* contributors may be used to endorse or promote products derived from
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* this software without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
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* A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
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* OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
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* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
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* LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
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* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*/
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#pragma once
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#include "Document.h"
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#include "DocumentFragment.h"
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#include "Element.h"
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#if ENABLE(PICTURE_IN_PICTURE_API)
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#include "HTMLVideoElement.h"
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#endif
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#include "ShadowRootMode.h"
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#include <wtf/HashMap.h>
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namespace WebCore {
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class HTMLSlotElement;
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class SlotAssignment;
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class StyleSheetList;
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class WebAnimation;
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class ShadowRoot final : public DocumentFragment, public TreeScope {
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WTF_MAKE_ISO_ALLOCATED(ShadowRoot);
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public:
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enum class DelegatesFocus : uint8_t { Yes, No };
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static Ref<ShadowRoot> create(Document& document, ShadowRootMode type, DelegatesFocus delegatesFocus = DelegatesFocus::No)
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{
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return adoptRef(*new ShadowRoot(document, type, delegatesFocus));
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}
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static Ref<ShadowRoot> create(Document& document, std::unique_ptr<SlotAssignment>&& assignment)
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{
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return adoptRef(*new ShadowRoot(document, WTFMove(assignment)));
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}
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virtual ~ShadowRoot();
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using TreeScope::rootNode;
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WEBCORE_EXPORT Style::Scope& styleScope();
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StyleSheetList& styleSheets();
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bool resetStyleInheritance() const { return m_resetStyleInheritance; }
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void setResetStyleInheritance(bool);
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bool delegatesFocus() const { return m_delegatesFocus; }
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bool containsFocusedElement() const { return m_containsFocusedElement; }
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void setContainsFocusedElement(bool flag) { m_containsFocusedElement = flag; }
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Element* host() const { return m_host.get(); }
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void setHost(WeakPtr<Element>&& host) { m_host = WTFMove(host); }
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String innerHTML() const;
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ExceptionOr<void> setInnerHTML(const String&);
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Element* activeElement() const;
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ShadowRootMode mode() const { return m_type; }
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bool shouldFireSlotchangeEvent() const { return m_type != ShadowRootMode::UserAgent && !m_hasBegunDeletingDetachedChildren; }
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void removeAllEventListeners() override;
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HTMLSlotElement* findAssignedSlot(const Node&);
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void renameSlotElement(HTMLSlotElement&, const AtomString& oldName, const AtomString& newName);
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void addSlotElementByName(const AtomString&, HTMLSlotElement&);
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void removeSlotElementByName(const AtomString&, HTMLSlotElement&, ContainerNode& oldParentOfRemovedTree);
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void slotFallbackDidChange(HTMLSlotElement&);
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void resolveSlotsBeforeNodeInsertionOrRemoval();
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void willRemoveAllChildren(ContainerNode&);
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void willRemoveAssignedNode(const Node&);
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void didRemoveAllChildrenOfShadowHost();
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void didChangeDefaultSlot();
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void hostChildElementDidChange(const Element&);
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void hostChildElementDidChangeSlotAttribute(Element&, const AtomString& oldValue, const AtomString& newValue);
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const Vector<WeakPtr<Node>>* assignedNodesForSlot(const HTMLSlotElement&);
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void moveShadowRootToNewParentScope(TreeScope&, Document&);
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void moveShadowRootToNewDocument(Document&);
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using PartMappings = HashMap<AtomString, Vector<AtomString, 1>>;
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const PartMappings& partMappings() const;
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void invalidatePartMappings();
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#if ENABLE(PICTURE_IN_PICTURE_API)
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HTMLVideoElement* pictureInPictureElement() const;
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#endif
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Vector<RefPtr<WebAnimation>> getAnimations();
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private:
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ShadowRoot(Document&, ShadowRootMode, DelegatesFocus);
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ShadowRoot(Document&, std::unique_ptr<SlotAssignment>&&);
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bool childTypeAllowed(NodeType) const override;
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Ref<Node> cloneNodeInternal(Document&, CloningOperation) override;
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Node::InsertedIntoAncestorResult insertedIntoAncestor(InsertionType, ContainerNode&) override;
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void removedFromAncestor(RemovalType, ContainerNode& insertionPoint) override;
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void childrenChanged(const ChildChange&) override;
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bool m_resetStyleInheritance { false };
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bool m_hasBegunDeletingDetachedChildren { false };
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bool m_delegatesFocus { false };
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bool m_containsFocusedElement { false };
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ShadowRootMode m_type { ShadowRootMode::UserAgent };
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WeakPtr<Element> m_host;
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RefPtr<StyleSheetList> m_styleSheetList;
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std::unique_ptr<Style::Scope> m_styleScope;
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std::unique_ptr<SlotAssignment> m_slotAssignment;
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mutable std::optional<PartMappings> m_partMappings;
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};
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inline Element* ShadowRoot::activeElement() const
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{
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return treeScope().focusedElementInScope();
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}
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inline ShadowRoot* Node::shadowRoot() const
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{
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if (!is<Element>(*this))
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return nullptr;
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return downcast<Element>(*this).shadowRoot();
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}
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inline bool Node::isUserAgentShadowRoot() const
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{
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return isShadowRoot() && downcast<ShadowRoot>(*this).mode() == ShadowRootMode::UserAgent;
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}
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inline ContainerNode* Node::parentOrShadowHostNode() const
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{
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ASSERT(isMainThreadOrGCThread());
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if (is<ShadowRoot>(*this))
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return downcast<ShadowRoot>(*this).host();
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return parentNode();
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}
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inline bool hasShadowRootParent(const Node& node)
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{
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return node.parentNode() && node.parentNode()->isShadowRoot();
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}
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Vector<ShadowRoot*> assignedShadowRootsIfSlotted(const Node&);
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} // namespace WebCore
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SPECIALIZE_TYPE_TRAITS_BEGIN(WebCore::ShadowRoot)
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static bool isType(const WebCore::Node& node) { return node.isShadowRoot(); }
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SPECIALIZE_TYPE_TRAITS_END()
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