--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/WebCore/css/CSSImportRule.cpp	Fri Sep 17 09:02:29 2010 +0300
@@ -0,0 +1,173 @@
+/*
+ * (C) 1999-2003 Lars Knoll (knoll@kde.org)
+ * (C) 2002-2003 Dirk Mueller (mueller@kde.org)
+ * Copyright (C) 2002, 2005, 2006, 2008, 2009 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 "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->doc() && parent->doc()->settings() && parent->doc()->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->doc() || !parent->doc()->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)
+        return;
+
+    DocLoader* docLoader = parentSheet->doc()->docLoader();
+    if (!docLoader)
+        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 = docLoader->requestUserCSSStyleSheet(absHref, parentSheet->charset());
+    else
+        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