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// Copyright 2016 The Chromium Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#ifndef CustomElement_h
#define CustomElement_h
#include "core/CoreExport.h"
#include "core/HTMLNames.h"
#include "core/dom/Element.h"
#include "platform/text/Character.h"
#include "wtf/ASCIICType.h"
#include "wtf/Allocator.h"
#include "wtf/text/AtomicString.h"
namespace blink {
class Document;
class Element;
class HTMLElement;
class QualifiedName;
class CustomElementDefinition;
class CustomElementReaction;
class CustomElementRegistry;
class CORE_EXPORT CustomElement {
STATIC_ONLY(CustomElement);
public:
// Retrieves the CustomElementRegistry for Element, if any. This
// may be a different object for a given element over its lifetime
// as it moves between documents.
static CustomElementRegistry* registry(const Element&);
static CustomElementRegistry* registry(const Document&);
static CustomElementDefinition* definitionForElement(const Element*);
static bool isValidName(const AtomicString& name) {
// This quickly rejects all common built-in element names.
if (name.find('-', 1) == kNotFound)
return false;
if (!isASCIILower(name[0]))
return false;
if (name.is8Bit()) {
const LChar* characters = name.characters8();
for (size_t i = 1; i < name.length(); ++i) {
if (!Character::isPotentialCustomElementName8BitChar(characters[i]))
return false;
}
} else {
const UChar* characters = name.characters16();
for (size_t i = 1; i < name.length();) {
UChar32 ch;
U16_NEXT(characters, i, name.length(), ch);
if (!Character::isPotentialCustomElementNameChar(ch))
return false;
}
}
return !isHyphenatedSpecElementName(name);
}
static bool shouldCreateCustomElement(const AtomicString& localName);
static bool shouldCreateCustomElement(const QualifiedName&);
static bool shouldCreateCustomizedBuiltinElement(
const AtomicString& localName);
static bool shouldCreateCustomizedBuiltinElement(const QualifiedName&);
static HTMLElement* createCustomElementSync(Document&, const QualifiedName&);
static HTMLElement* createCustomElementSync(Document&,
const AtomicString& localName,
CustomElementDefinition*);
static HTMLElement* createCustomElementSync(Document&,
const QualifiedName&,
CustomElementDefinition*);
static HTMLElement* createCustomElementAsync(Document&, const QualifiedName&);
static HTMLElement* createFailedElement(Document&, const QualifiedName&);
static void enqueue(Element*, CustomElementReaction*);
static void enqueueConnectedCallback(Element*);
static void enqueueDisconnectedCallback(Element*);
static void enqueueAdoptedCallback(Element*,
Document* oldOwner,
Document* newOwner);
static void enqueueAttributeChangedCallback(Element*,
const QualifiedName&,
const AtomicString& oldValue,
const AtomicString& newValue);
static void tryToUpgrade(Element*);
private:
// Some existing specs have element names with hyphens in them,
// like font-face in SVG. The custom elements spec explicitly
// disallows these as custom element names.
// https://html.spec.whatwg.org/#valid-custom-element-name
static bool isHyphenatedSpecElementName(const AtomicString&);
static HTMLElement* createUndefinedElement(Document&, const QualifiedName&);
};
} // namespace blink
#endif // CustomElement_h
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