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/*
* Copyright (C) 2011 Google Inc. All Rights Reserved.
* Copyright (C) 2012, 2013 Apple Inc. All Rights Reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY APPLE INC. ``AS IS'' AND ANY
* EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL APPLE INC. OR
* CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
* EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
* PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
* PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY
* OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
#pragma once
#include "ExceptionOr.h"
#include "TreeScopeOrderedMap.h"
#include <memory>
#include <wtf/Forward.h>
#include <wtf/UniqueRef.h>
#include <wtf/Vector.h>
#include <wtf/text/AtomString.h>
namespace JSC {
class JSValue;
}
namespace WebCore {
class CSSStyleSheet;
class CSSStyleSheetObservableArray;
class ContainerNode;
class Document;
class Element;
class FloatPoint;
class JSDOMGlobalObject;
class HTMLImageElement;
class HTMLLabelElement;
class HTMLMapElement;
class LayoutPoint;
class IdTargetObserverRegistry;
class Node;
class RadioButtonGroups;
class RenderSVGResourceContainer;
class SVGElement;
class ShadowRoot;
class WeakPtrImplWithEventTargetData;
struct SVGResourcesMap;
class TreeScope {
friend class Document;
public:
TreeScope* parentTreeScope() const { return m_parentTreeScope; }
void setParentTreeScope(TreeScope&);
Element* focusedElementInScope();
Element* pointerLockElement() const;
WEBCORE_EXPORT Element* getElementById(const AtomString&) const;
WEBCORE_EXPORT Element* getElementById(const String&) const;
Element* getElementById(StringView) const;
const Vector<Element*>* getAllElementsById(const AtomString&) const;
bool hasElementWithId(const AtomStringImpl&) const;
bool containsMultipleElementsWithId(const AtomString& id) const;
void addElementById(const AtomStringImpl& elementId, Element&, bool notifyObservers = true);
void removeElementById(const AtomStringImpl& elementId, Element&, bool notifyObservers = true);
WEBCORE_EXPORT Element* getElementByName(const AtomString&) const;
bool hasElementWithName(const AtomStringImpl&) const;
bool containsMultipleElementsWithName(const AtomString&) const;
void addElementByName(const AtomStringImpl&, Element&);
void removeElementByName(const AtomStringImpl&, Element&);
Document& documentScope() const { return m_documentScope.get(); }
static ptrdiff_t documentScopeMemoryOffset() { return OBJECT_OFFSETOF(TreeScope, m_documentScope); }
// https://dom.spec.whatwg.org/#retarget
Ref<Node> retargetToScope(Node&) const;
WEBCORE_EXPORT Node* ancestorNodeInThisScope(Node*) const;
WEBCORE_EXPORT Element* ancestorElementInThisScope(Element*) const;
void addImageMap(HTMLMapElement&);
void removeImageMap(HTMLMapElement&);
HTMLMapElement* getImageMap(const AtomString&) const;
void addImageElementByUsemap(const AtomStringImpl&, HTMLImageElement&);
void removeImageElementByUsemap(const AtomStringImpl&, HTMLImageElement&);
HTMLImageElement* imageElementByUsemap(const AtomStringImpl&) const;
// For accessibility.
bool shouldCacheLabelsByForAttribute() const { return !!m_labelsByForAttribute; }
void addLabel(const AtomStringImpl& forAttributeValue, HTMLLabelElement&);
void removeLabel(const AtomStringImpl& forAttributeValue, HTMLLabelElement&);
const Vector<Element*>* labelElementsForId(const AtomString& forAttributeValue);
WEBCORE_EXPORT RefPtr<Element> elementFromPoint(double clientX, double clientY);
WEBCORE_EXPORT Vector<RefPtr<Element>> elementsFromPoint(double clientX, double clientY);
WEBCORE_EXPORT Vector<RefPtr<Element>> elementsFromPoint(const FloatPoint&);
// Find first anchor with the given name.
// First searches for an element with the given ID, but if that fails, then looks
// for an anchor with the given name. ID matching is always case sensitive, but
// Anchor name matching is case sensitive in strict mode and not case sensitive in
// quirks mode for historical compatibility reasons.
Element* findAnchor(StringView name);
ContainerNode& rootNode() const { return m_rootNode; }
IdTargetObserverRegistry& idTargetObserverRegistry() { return m_idTargetObserverRegistry.get(); }
const IdTargetObserverRegistry& idTargetObserverRegistry() const { return m_idTargetObserverRegistry.get(); }
RadioButtonGroups& radioButtonGroups();
JSC::JSValue adoptedStyleSheetWrapper(JSDOMGlobalObject&);
std::span<const RefPtr<CSSStyleSheet>> adoptedStyleSheets() const;
ExceptionOr<void> setAdoptedStyleSheets(Vector<RefPtr<CSSStyleSheet>>&&);
void addSVGResource(const AtomString& id, RenderSVGResourceContainer&);
void removeSVGResource(const AtomString& id);
RenderSVGResourceContainer* svgResourceById(const AtomString& id) const;
void addPendingSVGResource(const AtomString& id, SVGElement&);
bool isIdOfPendingSVGResource(const AtomString& id) const;
bool isPendingSVGResource(SVGElement&, const AtomString& id) const;
void clearHasPendingSVGResourcesIfPossible(SVGElement&);
void removeElementFromPendingSVGResources(SVGElement&);
WeakHashSet<SVGElement, WeakPtrImplWithEventTargetData> removePendingSVGResource(const AtomString&);
void markPendingSVGResourcesForRemoval(const AtomString&);
RefPtr<SVGElement> takeElementFromPendingSVGResourcesForRemovalMap(const AtomString&);
protected:
TreeScope(ShadowRoot&, Document&);
explicit TreeScope(Document&);
~TreeScope();
void destroyTreeScopeData();
void setDocumentScope(Document& document)
{
m_documentScope = document;
}
RefPtr<Node> nodeFromPoint(const LayoutPoint& clientPoint, LayoutPoint* localPoint);
private:
CSSStyleSheetObservableArray& ensureAdoptedStyleSheets();
SVGResourcesMap& svgResourcesMap() const;
bool isElementWithPendingSVGResources(SVGElement&) const;
ContainerNode& m_rootNode;
std::reference_wrapper<Document> m_documentScope;
TreeScope* m_parentTreeScope;
std::unique_ptr<TreeScopeOrderedMap> m_elementsById;
std::unique_ptr<TreeScopeOrderedMap> m_elementsByName;
std::unique_ptr<TreeScopeOrderedMap> m_imageMapsByName;
std::unique_ptr<TreeScopeOrderedMap> m_imagesByUsemap;
std::unique_ptr<TreeScopeOrderedMap> m_labelsByForAttribute;
UniqueRef<IdTargetObserverRegistry> m_idTargetObserverRegistry;
std::unique_ptr<RadioButtonGroups> m_radioButtonGroups;
RefPtr<CSSStyleSheetObservableArray> m_adoptedStyleSheets;
std::unique_ptr<SVGResourcesMap> m_svgResourcesMap;
};
inline bool TreeScope::hasElementWithId(const AtomStringImpl& id) const
{
return m_elementsById && m_elementsById->contains(id);
}
inline bool TreeScope::containsMultipleElementsWithId(const AtomString& id) const
{
return m_elementsById && id.impl() && m_elementsById->containsMultiple(*id.impl());
}
inline bool TreeScope::hasElementWithName(const AtomStringImpl& id) const
{
return m_elementsByName && m_elementsByName->contains(id);
}
inline bool TreeScope::containsMultipleElementsWithName(const AtomString& name) const
{
return m_elementsByName && name.impl() && m_elementsByName->containsMultiple(*name.impl());
}
TreeScope* commonTreeScope(Node*, Node*);
} // namespace WebCore
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