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
|
/*
* Copyright (C) 1999 Lars Knoll (knoll@kde.org)
* (C) 1999 Antti Koivisto (koivisto@kde.org)
* (C) 2001 Dirk Mueller (mueller@kde.org)
* Copyright (C) 2004-2018 Apple Inc. All rights reserved.
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Library General Public
* License as published by the Free Software Foundation; either
* version 2 of the License, or (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Library General Public License for more details.
*
* You should have received a copy of the GNU Library General Public License
* along with this library; see the file COPYING.LIB. If not, write to
* the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
* Boston, MA 02110-1301, USA.
*/
#include "config.h"
#include "DocumentFragment.h"
#include "Document.h"
#include "ElementIterator.h"
#include "HTMLDocumentParser.h"
#include "HTMLDocumentParserFastPath.h"
#include "Page.h"
#include "TypedElementDescendantIteratorInlines.h"
#include "XMLDocumentParser.h"
#include "markup.h"
#include <wtf/IsoMallocInlines.h>
namespace WebCore {
WTF_MAKE_ISO_ALLOCATED_IMPL(DocumentFragment);
DocumentFragment::DocumentFragment(Document& document, ConstructionType constructionType)
: ContainerNode(document, constructionType)
{
}
Ref<DocumentFragment> DocumentFragment::create(Document& document)
{
return adoptRef(*new DocumentFragment(document, Node::CreateDocumentFragment));
}
String DocumentFragment::nodeName() const
{
return "#document-fragment"_s;
}
Node::NodeType DocumentFragment::nodeType() const
{
return DOCUMENT_FRAGMENT_NODE;
}
bool DocumentFragment::childTypeAllowed(NodeType type) const
{
switch (type) {
case ELEMENT_NODE:
case PROCESSING_INSTRUCTION_NODE:
case COMMENT_NODE:
case TEXT_NODE:
case CDATA_SECTION_NODE:
return true;
default:
return false;
}
}
Ref<Node> DocumentFragment::cloneNodeInternal(Document& targetDocument, CloningOperation type)
{
Ref<DocumentFragment> clone = create(targetDocument);
switch (type) {
case CloningOperation::OnlySelf:
case CloningOperation::SelfWithTemplateContent:
break;
case CloningOperation::Everything:
cloneChildNodes(clone);
break;
}
return clone;
}
void DocumentFragment::parseHTML(const String& source, Element& contextElement, OptionSet<ParserContentPolicy> parserContentPolicy)
{
if (tryFastParsingHTMLFragment(source, document(), *this, contextElement, parserContentPolicy)) {
#if ASSERT_ENABLED
// As a sanity check for the fast-path, create another fragment using the full parser and compare the results.
auto referenceFragment = DocumentFragment::create(document());
HTMLDocumentParser::parseDocumentFragment(source, referenceFragment, contextElement, parserContentPolicy);
ASSERT(serializeFragment(*this, SerializedNodes::SubtreesOfChildren) == serializeFragment(referenceFragment, SerializedNodes::SubtreesOfChildren));
#endif
return;
}
HTMLDocumentParser::parseDocumentFragment(source, *this, contextElement, parserContentPolicy);
}
bool DocumentFragment::parseXML(const String& source, Element* contextElement, OptionSet<ParserContentPolicy> parserContentPolicy)
{
return XMLDocumentParser::parseDocumentFragment(source, *this, contextElement, parserContentPolicy);
}
Element* DocumentFragment::getElementById(const AtomString& id) const
{
if (id.isEmpty())
return nullptr;
// Fast path for ShadowRoot, where we are both a DocumentFragment and a TreeScope.
if (isTreeScope())
return treeScope().getElementById(id);
// Otherwise, fall back to iterating all of the element descendants.
for (auto& element : descendantsOfType<Element>(*this)) {
if (element.getIdAttribute() == id)
return const_cast<Element*>(&element);
}
return nullptr;
}
}
|
