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
|
/*
* Copyright (C) 2004, 2005, 2008 Nikolas Zimmermann <zimmermann@kde.org>
* Copyright (C) 2004, 2005, 2006 Rob Buis <buis@kde.org>
*
* 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 "SVGURIReference.h"
#include "Document.h"
#include "Element.h"
#include "URL.h"
#include "XLinkNames.h"
namespace WebCore {
void SVGURIReference::parseAttribute(const QualifiedName& name, const AtomicString& value)
{
if (name.matches(XLinkNames::hrefAttr))
setHrefBaseValue(value);
}
bool SVGURIReference::isKnownAttribute(const QualifiedName& attrName)
{
return attrName.matches(XLinkNames::hrefAttr);
}
String SVGURIReference::fragmentIdentifierFromIRIString(const String& url, Document& document)
{
size_t start = url.find('#');
if (start == notFound)
return emptyString();
URL base = start ? URL(document.baseURI(), url.substring(0, start)) : document.baseURI();
String fragmentIdentifier = url.substring(start);
URL kurl(base, fragmentIdentifier);
if (equalIgnoringFragmentIdentifier(kurl, document.url()))
return fragmentIdentifier.substring(1);
// The url doesn't have any fragment identifier.
return emptyString();
}
static inline URL urlFromIRIStringWithFragmentIdentifier(const String& url, Document& document, String& fragmentIdentifier)
{
size_t startOfFragmentIdentifier = url.find('#');
if (startOfFragmentIdentifier == notFound)
return URL();
// Exclude the '#' character when determining the fragmentIdentifier.
fragmentIdentifier = url.substring(startOfFragmentIdentifier + 1);
if (startOfFragmentIdentifier) {
URL base(document.baseURI(), url.substring(0, startOfFragmentIdentifier));
return URL(base, url.substring(startOfFragmentIdentifier));
}
return URL(document.baseURI(), url.substring(startOfFragmentIdentifier));
}
Element* SVGURIReference::targetElementFromIRIString(const String& iri, Document& document, String* fragmentIdentifier, Document* externalDocument)
{
// If there's no fragment identifier contained within the IRI string, we can't lookup an element.
String id;
URL url = urlFromIRIStringWithFragmentIdentifier(iri, document, id);
if (url == URL())
return 0;
if (fragmentIdentifier)
*fragmentIdentifier = id;
if (id.isEmpty())
return 0;
if (externalDocument) {
// Enforce that the referenced url matches the url of the document that we've loaded for it!
ASSERT(equalIgnoringFragmentIdentifier(url, externalDocument->url()));
return externalDocument->getElementById(id);
}
// Exit early if the referenced url is external, and we have no externalDocument given.
if (isExternalURIReference(iri, document))
return 0;
return document.getElementById(id);
}
void SVGURIReference::addSupportedAttributes(HashSet<QualifiedName>& supportedAttributes)
{
supportedAttributes.add(XLinkNames::hrefAttr);
}
}
|
