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
|
/*
* (C) 1999-2003 Lars Knoll (knoll@kde.org)
* (C) 2002-2003 Dirk Mueller (mueller@kde.org)
* Copyright (C) 2002, 2005, 2006, 2008 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 "DocLoader.h"
#include "Document.h"
#include "MediaList.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& url, const String& charset, const CachedCSSStyleSheet* sheet)
{
if (m_styleSheet)
m_styleSheet->setParent(0);
m_styleSheet = CSSStyleSheet::create(this, url, charset);
CSSStyleSheet* parent = parentStyleSheet();
bool strict = !parent || parent->useStrictParsing();
m_styleSheet->parseString(sheet->sheetText(strict), strict);
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)
return;
DocLoader* docLoader = parentSheet->doc()->docLoader();
if (!docLoader)
return;
String absHref = m_strHref;
if (!parentSheet->href().isNull())
// use parent styleheet's URL as the base URL
absHref = KURL(KURL(parentSheet->href()), 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()) {
if (curr->isCSSStyleSheet() && absHref == static_cast<CSSStyleSheet*>(curr)->href())
return;
root = curr;
}
m_cachedSheet = docLoader->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->doc()->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
|
