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
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
|
/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
/* This Source Code Form is subject to the terms of the Mozilla Public
* License, v. 2.0. If a copy of the MPL was not distributed with this
* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
#include "mozilla/dom/SVGTests.h"
#include "DOMSVGStringList.h"
#include "nsSVGFeatures.h"
#include "mozilla/dom/SVGSwitchElement.h"
#include "nsCharSeparatedTokenizer.h"
#include "nsStyleUtil.h"
#include "mozilla/Preferences.h"
#include "nsIContentInlines.h"
namespace mozilla {
namespace dom {
nsIAtom** SVGTests::sStringListNames[3] =
{
&nsGkAtoms::requiredFeatures,
&nsGkAtoms::requiredExtensions,
&nsGkAtoms::systemLanguage,
};
SVGTests::SVGTests()
{
mStringListAttributes[LANGUAGE].SetIsCommaSeparated(true);
}
already_AddRefed<DOMSVGStringList>
SVGTests::RequiredFeatures()
{
nsCOMPtr<nsIDOMSVGElement> elem = do_QueryInterface(this);
nsSVGElement* element = static_cast<nsSVGElement*>(elem.get());
return DOMSVGStringList::GetDOMWrapper(
&mStringListAttributes[FEATURES], element, true, FEATURES);
}
already_AddRefed<DOMSVGStringList>
SVGTests::RequiredExtensions()
{
nsCOMPtr<nsIDOMSVGElement> elem = do_QueryInterface(this);
nsSVGElement* element = static_cast<nsSVGElement*>(elem.get());
return DOMSVGStringList::GetDOMWrapper(
&mStringListAttributes[EXTENSIONS], element, true, EXTENSIONS);
}
already_AddRefed<DOMSVGStringList>
SVGTests::SystemLanguage()
{
nsCOMPtr<nsIDOMSVGElement> elem = do_QueryInterface(this);
nsSVGElement* element = static_cast<nsSVGElement*>(elem.get());
return DOMSVGStringList::GetDOMWrapper(
&mStringListAttributes[LANGUAGE], element, true, LANGUAGE);
}
bool
SVGTests::HasExtension(const nsAString& aExtension)
{
return nsSVGFeatures::HasExtension(aExtension, IsInChromeDoc());
}
bool
SVGTests::IsConditionalProcessingAttribute(const nsIAtom* aAttribute) const
{
for (uint32_t i = 0; i < ArrayLength(sStringListNames); i++) {
if (aAttribute == *sStringListNames[i]) {
return true;
}
}
return false;
}
int32_t
SVGTests::GetBestLanguagePreferenceRank(const nsSubstring& aAcceptLangs) const
{
const nsDefaultStringComparator defaultComparator;
if (!mStringListAttributes[LANGUAGE].IsExplicitlySet()) {
return -2;
}
int32_t lowestRank = -1;
for (uint32_t i = 0; i < mStringListAttributes[LANGUAGE].Length(); i++) {
nsCharSeparatedTokenizer languageTokenizer(aAcceptLangs, ',');
int32_t index = 0;
while (languageTokenizer.hasMoreTokens()) {
const nsSubstring &languageToken = languageTokenizer.nextToken();
bool exactMatch = (languageToken == mStringListAttributes[LANGUAGE][i]);
bool prefixOnlyMatch =
!exactMatch &&
nsStyleUtil::DashMatchCompare(mStringListAttributes[LANGUAGE][i],
languageTokenizer.nextToken(),
defaultComparator);
if (index == 0 && exactMatch) {
// best possible match
return 0;
}
if ((exactMatch || prefixOnlyMatch) &&
(lowestRank == -1 || 2 * index + prefixOnlyMatch < lowestRank)) {
lowestRank = 2 * index + prefixOnlyMatch;
}
++index;
}
}
return lowestRank;
}
const nsString * const SVGTests::kIgnoreSystemLanguage = (nsString *) 0x01;
bool
SVGTests::PassesConditionalProcessingTests(const nsString *aAcceptLangs) const
{
// Required Extensions
//
// The requiredExtensions attribute defines a list of required language
// extensions. Language extensions are capabilities within a user agent that
// go beyond the feature set defined in the SVG specification.
// Each extension is identified by a URI reference.
// For now, claim that mozilla's SVG implementation supports XHTML and MathML.
if (mStringListAttributes[EXTENSIONS].IsExplicitlySet()) {
if (mStringListAttributes[EXTENSIONS].IsEmpty()) {
return false;
}
for (uint32_t i = 0; i < mStringListAttributes[EXTENSIONS].Length(); i++) {
if (!nsSVGFeatures::HasExtension(mStringListAttributes[EXTENSIONS][i], IsInChromeDoc())) {
return false;
}
}
}
if (aAcceptLangs == kIgnoreSystemLanguage) {
return true;
}
// systemLanguage
//
// Evaluates to "true" if one of the languages indicated by user preferences
// exactly equals one of the languages given in the value of this parameter,
// or if one of the languages indicated by user preferences exactly equals a
// prefix of one of the languages given in the value of this parameter such
// that the first tag character following the prefix is "-".
if (mStringListAttributes[LANGUAGE].IsExplicitlySet()) {
if (mStringListAttributes[LANGUAGE].IsEmpty()) {
return false;
}
// Get our language preferences
const nsAutoString acceptLangs(aAcceptLangs ? *aAcceptLangs :
Preferences::GetLocalizedString("intl.accept_languages"));
if (acceptLangs.IsEmpty()) {
NS_WARNING("no default language specified for systemLanguage conditional test");
return false;
}
const nsDefaultStringComparator defaultComparator;
for (uint32_t i = 0; i < mStringListAttributes[LANGUAGE].Length(); i++) {
nsCharSeparatedTokenizer languageTokenizer(acceptLangs, ',');
while (languageTokenizer.hasMoreTokens()) {
if (nsStyleUtil::DashMatchCompare(mStringListAttributes[LANGUAGE][i],
languageTokenizer.nextToken(),
defaultComparator)) {
return true;
}
}
}
return false;
}
return true;
}
bool
SVGTests::ParseConditionalProcessingAttribute(nsIAtom* aAttribute,
const nsAString& aValue,
nsAttrValue& aResult)
{
for (uint32_t i = 0; i < ArrayLength(sStringListNames); i++) {
if (aAttribute == *sStringListNames[i]) {
nsresult rv = mStringListAttributes[i].SetValue(aValue);
if (NS_FAILED(rv)) {
mStringListAttributes[i].Clear();
}
MaybeInvalidate();
return true;
}
}
return false;
}
void
SVGTests::UnsetAttr(const nsIAtom* aAttribute)
{
for (uint32_t i = 0; i < ArrayLength(sStringListNames); i++) {
if (aAttribute == *sStringListNames[i]) {
mStringListAttributes[i].Clear();
MaybeInvalidate();
return;
}
}
}
nsIAtom*
SVGTests::GetAttrName(uint8_t aAttrEnum) const
{
return *sStringListNames[aAttrEnum];
}
void
SVGTests::GetAttrValue(uint8_t aAttrEnum, nsAttrValue& aValue) const
{
MOZ_ASSERT(aAttrEnum < ArrayLength(sStringListNames),
"aAttrEnum out of range");
aValue.SetTo(mStringListAttributes[aAttrEnum], nullptr);
}
void
SVGTests::MaybeInvalidate()
{
nsCOMPtr<nsIDOMSVGElement> elem = do_QueryInterface(this);
nsSVGElement* element = static_cast<nsSVGElement*>(elem.get());
nsIContent* parent = element->GetFlattenedTreeParent();
if (parent &&
parent->NodeInfo()->Equals(nsGkAtoms::svgSwitch, kNameSpaceID_SVG)) {
static_cast<dom::SVGSwitchElement*>(parent)->MaybeInvalidate();
}
}
} // namespace dom
} // namespace mozilla
|
