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
|
/*
* Copyright (C) 2012 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/CustomElementRegistry.h"
#include "HTMLNames.h"
#include "SVGNames.h"
#include "bindings/v8/CustomElementConstructorBuilder.h"
#include "core/dom/DocumentLifecycleObserver.h"
#include "core/dom/custom/CustomElementException.h"
#include "core/dom/custom/CustomElementRegistrationContext.h"
namespace WebCore {
class RegistrationContextObserver : public DocumentLifecycleObserver {
public:
explicit RegistrationContextObserver(Document* document)
: DocumentLifecycleObserver(document)
, m_wentAway(!document)
{
}
bool registrationContextWentAway() { return m_wentAway; }
private:
virtual void documentWasDisposed() OVERRIDE { m_wentAway = true; }
bool m_wentAway;
};
CustomElementDefinition* CustomElementRegistry::registerElement(Document* document, CustomElementConstructorBuilder* constructorBuilder, const AtomicString& userSuppliedName, CustomElement::NameSet validNames, ExceptionState& exceptionState)
{
// FIXME: In every instance except one it is the
// CustomElementConstructorBuilder that observes document
// destruction during registration. This responsibility should be
// consolidated in one place.
RegistrationContextObserver observer(document);
AtomicString type = userSuppliedName.lower();
if (!constructorBuilder->isFeatureAllowed()) {
CustomElementException::throwException(CustomElementException::CannotRegisterFromExtension, type, exceptionState);
return 0;
}
if (!CustomElement::isValidName(type, validNames)) {
CustomElementException::throwException(CustomElementException::InvalidName, type, exceptionState);
return 0;
}
QualifiedName tagName = nullQName();
if (!constructorBuilder->validateOptions(type, tagName, exceptionState))
return 0;
ASSERT(tagName.namespaceURI() == HTMLNames::xhtmlNamespaceURI || tagName.namespaceURI() == SVGNames::svgNamespaceURI);
// FIXME: This should be done earlier in validateOptions.
if (m_registeredTypeNames.contains(type)) {
CustomElementException::throwException(CustomElementException::TypeAlreadyRegistered, type, exceptionState);
return 0;
}
ASSERT(!observer.registrationContextWentAway());
RefPtr<CustomElementLifecycleCallbacks> lifecycleCallbacks = constructorBuilder->createCallbacks();
// Consulting the constructor builder could execute script and
// kill the document.
if (observer.registrationContextWentAway()) {
CustomElementException::throwException(CustomElementException::ContextDestroyedCreatingCallbacks, type, exceptionState);
return 0;
}
const CustomElementDescriptor descriptor(type, tagName.namespaceURI(), tagName.localName());
RefPtr<CustomElementDefinition> definition = CustomElementDefinition::create(descriptor, lifecycleCallbacks);
if (!constructorBuilder->createConstructor(document, definition.get(), exceptionState))
return 0;
m_definitions.add(descriptor, definition);
m_registeredTypeNames.add(descriptor.type());
if (!constructorBuilder->didRegisterDefinition(definition.get())) {
CustomElementException::throwException(CustomElementException::ContextDestroyedRegisteringDefinition, type, exceptionState);
return 0;
}
return definition.get();
}
CustomElementDefinition* CustomElementRegistry::find(const CustomElementDescriptor& descriptor) const
{
return m_definitions.get(descriptor);
}
} // namespace WebCore
|
