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
|
/*
* (C) 1999-2003 Lars Knoll (knoll@kde.org)
* (C) 2002-2003 Dirk Mueller (mueller@kde.org)
* Copyright (C) 2002, 2005, 2006, 2008, 2009, 2010 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 "CSSImportRule.h"
#include "CachedCSSStyleSheet.h"
#include "CachedResourceLoader.h"
#include "Document.h"
#include "SecurityOrigin.h"
#include "Settings.h"
#include <wtf/StdLibExtras.h>
namespace WebCore {
CSSImportRule::CSSImportRule(CSSStyleSheet* parent, const String& href, PassRefPtr<MediaList> media)
: CSSRule(parent)
, m_strHref(href)
, m_lstMedia(media)
, m_cachedSheet(0)
, m_loading(false)
{
if (m_lstMedia)
m_lstMedia->setParent(this);
else
m_lstMedia = MediaList::create(this, String());
}
CSSImportRule::~CSSImportRule()
{
if (m_lstMedia)
m_lstMedia->setParent(0);
if (m_styleSheet)
m_styleSheet->setParent(0);
if (m_cachedSheet)
m_cachedSheet->removeClient(this);
}
void CSSImportRule::setCSSStyleSheet(const String& href, const KURL& baseURL, const String& charset, const CachedCSSStyleSheet* sheet)
{
if (m_styleSheet)
m_styleSheet->setParent(0);
m_styleSheet = CSSStyleSheet::create(this, href, baseURL, charset);
bool crossOriginCSS = false;
bool validMIMEType = false;
CSSStyleSheet* parent = parentStyleSheet();
bool strict = !parent || parent->useStrictParsing();
bool enforceMIMEType = strict;
bool needsSiteSpecificQuirks = parent && parent->document() && parent->document()->settings() && parent->document()->settings()->needsSiteSpecificQuirks();
#if defined(BUILDING_ON_TIGER) || defined(BUILDING_ON_LEOPARD)
if (enforceMIMEType && needsSiteSpecificQuirks) {
// Covers both http and https, with or without "www."
if (baseURL.string().contains("mcafee.com/japan/", false))
enforceMIMEType = false;
}
#endif
String sheetText = sheet->sheetText(enforceMIMEType, &validMIMEType);
m_styleSheet->parseString(sheetText, strict);
if (!parent || !parent->document() || !parent->document()->securityOrigin()->canRequest(baseURL))
crossOriginCSS = true;
if (crossOriginCSS && !validMIMEType && !m_styleSheet->hasSyntacticallyValidCSSHeader())
m_styleSheet = CSSStyleSheet::create(this, href, baseURL, charset);
if (strict && needsSiteSpecificQuirks) {
// Work around <https://bugs.webkit.org/show_bug.cgi?id=28350>.
DEFINE_STATIC_LOCAL(const String, slashKHTMLFixesDotCss, ("/KHTMLFixes.css"));
DEFINE_STATIC_LOCAL(const String, mediaWikiKHTMLFixesStyleSheet, ("/* KHTML fix stylesheet */\n/* work around the horizontal scrollbars */\n#column-content { margin-left: 0; }\n\n"));
// There are two variants of KHTMLFixes.css. One is equal to mediaWikiKHTMLFixesStyleSheet,
// while the other lacks the second trailing newline.
if (baseURL.string().endsWith(slashKHTMLFixesDotCss) && !sheetText.isNull() && mediaWikiKHTMLFixesStyleSheet.startsWith(sheetText)
&& sheetText.length() >= mediaWikiKHTMLFixesStyleSheet.length() - 1) {
ASSERT(m_styleSheet->length() == 1);
ExceptionCode ec;
m_styleSheet->deleteRule(0, ec);
}
}
m_loading = false;
if (parent)
parent->checkLoaded();
}
bool CSSImportRule::isLoading() const
{
return m_loading || (m_styleSheet && m_styleSheet->isLoading());
}
void CSSImportRule::insertedIntoParent()
{
CSSStyleSheet* parentSheet = parentStyleSheet();
if (!parentSheet || !parentSheet->document())
return;
CachedResourceLoader* cachedResourceLoader = parentSheet->document()->cachedResourceLoader();
if (!cachedResourceLoader)
return;
String absHref = m_strHref;
if (!parentSheet->finalURL().isNull())
// use parent styleheet's URL as the base URL
absHref = KURL(parentSheet->finalURL(), m_strHref).string();
// Check for a cycle in our import chain. If we encounter a stylesheet
// in our parent chain with the same URL, then just bail.
StyleBase* root = this;
for (StyleBase* curr = parent(); curr; curr = curr->parent()) {
// FIXME: This is wrong if the finalURL was updated via document::updateBaseURL.
if (curr->isCSSStyleSheet() && absHref == static_cast<CSSStyleSheet*>(curr)->finalURL().string())
return;
root = curr;
}
if (parentSheet->isUserStyleSheet())
m_cachedSheet = cachedResourceLoader->requestUserCSSStyleSheet(absHref, parentSheet->charset());
else
m_cachedSheet = cachedResourceLoader->requestCSSStyleSheet(absHref, parentSheet->charset());
if (m_cachedSheet) {
// if the import rule is issued dynamically, the sheet may be
// removed from the pending sheet count, so let the doc know
// the sheet being imported is pending.
if (parentSheet && parentSheet->loadCompleted() && root == parentSheet)
parentSheet->document()->addPendingSheet();
m_loading = true;
m_cachedSheet->addClient(this);
}
}
String CSSImportRule::cssText() const
{
String result = "@import url(\"";
result += m_strHref;
result += "\")";
if (m_lstMedia) {
result += " ";
result += m_lstMedia->mediaText();
}
result += ";";
return result;
}
void CSSImportRule::addSubresourceStyleURLs(ListHashSet<KURL>& urls)
{
if (m_styleSheet)
addSubresourceURL(urls, m_styleSheet->baseURL());
}
} // namespace WebCore
|
