1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
|
/*
* Copyright (C) 2013 Google 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.
* 3. Neither the name of Google Inc. nor the names of its contributors
* may be used to endorse or promote products derived from this
* software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
* "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 THE COPYRIGHT
* OWNER 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.
*/
#include "config.h"
#include "core/dom/custom/CustomElementRegistrationContext.h"
#include "HTMLNames.h"
#include "SVGNames.h"
#include "bindings/v8/ExceptionState.h"
#include "core/dom/Element.h"
#include "core/dom/custom/CustomElement.h"
#include "core/dom/custom/CustomElementCallbackScheduler.h"
#include "core/dom/custom/CustomElementDefinition.h"
#include "core/html/HTMLElement.h"
#include "core/html/HTMLUnknownElement.h"
#include "core/svg/SVGUnknownElement.h"
#include "wtf/RefPtr.h"
namespace WebCore {
void CustomElementRegistrationContext::registerElement(Document* document, CustomElementConstructorBuilder* constructorBuilder, const AtomicString& type, CustomElement::NameSet validNames, ExceptionState& exceptionState)
{
CustomElementDefinition* definition = m_registry.registerElement(document, constructorBuilder, type, validNames, exceptionState);
if (!definition)
return;
// Upgrade elements that were waiting for this definition.
const CustomElementUpgradeCandidateMap::ElementSet& upgradeCandidates = m_candidates.takeUpgradeCandidatesFor(definition->descriptor());
for (CustomElementUpgradeCandidateMap::ElementSet::const_iterator it = upgradeCandidates.begin(); it != upgradeCandidates.end(); ++it)
didResolveElement(definition, *it);
}
PassRefPtr<Element> CustomElementRegistrationContext::createCustomTagElement(Document& document, const QualifiedName& tagName)
{
ASSERT(CustomElement::isValidName(tagName.localName()));
RefPtr<Element> element;
if (HTMLNames::xhtmlNamespaceURI == tagName.namespaceURI()) {
element = HTMLElement::create(tagName, document);
} else if (SVGNames::svgNamespaceURI == tagName.namespaceURI()) {
element = SVGUnknownElement::create(tagName, document);
} else {
// XML elements are not custom elements, so return early.
return Element::create(tagName, &document);
}
element->setCustomElementState(Element::WaitingForUpgrade);
resolve(element.get(), nullAtom);
return element.release();
}
void CustomElementRegistrationContext::didGiveTypeExtension(Element* element, const AtomicString& type)
{
resolve(element, type);
}
void CustomElementRegistrationContext::resolve(Element* element, const AtomicString& typeExtension)
{
// If an element has a custom tag name it takes precedence over
// the "is" attribute (if any).
const AtomicString& type = CustomElement::isValidName(element->localName())
? element->localName()
: typeExtension;
ASSERT(!type.isNull());
CustomElementDescriptor descriptor(type, element->namespaceURI(), element->localName());
CustomElementDefinition* definition = m_registry.find(descriptor);
if (definition)
didResolveElement(definition, element);
else
didCreateUnresolvedElement(descriptor, element);
}
void CustomElementRegistrationContext::didResolveElement(CustomElementDefinition* definition, Element* element)
{
CustomElement::define(element, definition);
}
void CustomElementRegistrationContext::didCreateUnresolvedElement(const CustomElementDescriptor& descriptor, Element* element)
{
ASSERT(element->customElementState() == Element::WaitingForUpgrade);
m_candidates.add(descriptor, element);
}
PassRefPtr<CustomElementRegistrationContext> CustomElementRegistrationContext::create()
{
return adoptRef(new CustomElementRegistrationContext());
}
void CustomElementRegistrationContext::setIsAttributeAndTypeExtension(Element* element, const AtomicString& type)
{
ASSERT(element);
ASSERT(!type.isEmpty());
element->setAttribute(HTMLNames::isAttr, type);
setTypeExtension(element, type);
}
void CustomElementRegistrationContext::setTypeExtension(Element* element, const AtomicString& type)
{
if (!element->isHTMLElement() && !element->isSVGElement())
return;
if (element->isCustomElement()) {
// This can happen if:
// 1. The element has a custom tag, which takes precedence over
// type extensions.
// 2. Undoing a command (eg ReplaceNodeWithSpan) recycles an
// element but tries to overwrite its attribute list.
return;
}
// Custom tags take precedence over type extensions
ASSERT(!CustomElement::isValidName(element->localName()));
element->setCustomElementState(Element::WaitingForUpgrade);
if (CustomElementRegistrationContext* context = element->document().registrationContext())
context->didGiveTypeExtension(element, type);
}
} // namespace WebCore
|
