--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/WebCore/css/CSSImageValue.cpp	Fri Sep 17 09:02:29 2010 +0300
@@ -0,0 +1,92 @@
+/*
+ * (C) 1999-2003 Lars Knoll (knoll@kde.org)
+ * Copyright (C) 2004, 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 "CSSImageValue.h"
+
+#include "CSSValueKeywords.h"
+#include "Cache.h"
+#include "CachedImage.h"
+#include "DocLoader.h"
+#include "StyleCachedImage.h"
+
+namespace WebCore {
+
+CSSImageValue::CSSImageValue(const String& url)
+    : CSSPrimitiveValue(url, CSS_URI)
+    , m_accessedImage(false)
+{
+}
+
+CSSImageValue::CSSImageValue()
+    : CSSPrimitiveValue(CSSValueNone)
+    , m_accessedImage(true)
+{
+}
+
+CSSImageValue::~CSSImageValue()
+{
+    if (m_image)
+        m_image->cachedImage()->removeClient(this);
+}
+
+StyleCachedImage* CSSImageValue::cachedImage(DocLoader* loader)
+{
+    return cachedImage(loader, getStringValue());
+}
+
+StyleCachedImage* CSSImageValue::cachedImage(DocLoader* loader, const String& url)
+{
+    if (!m_accessedImage) {
+        m_accessedImage = true;
+
+        CachedImage* cachedImage = 0;
+        if (loader)
+            cachedImage = loader->requestImage(url);
+        else {
+            // FIXME: Should find a way to make these images sit in their own memory partition, since they are user agent images.
+            cachedImage = static_cast<CachedImage*>(cache()->requestResource(0, CachedResource::ImageResource, KURL(ParsedURLString, url), String()));
+        }
+
+        if (cachedImage) {
+            cachedImage->addClient(this);
+            m_image = StyleCachedImage::create(cachedImage);
+        }
+    }
+    
+    return m_image.get();
+}
+
+String CSSImageValue::cachedImageURL()
+{
+    if (!m_image)
+        return String();
+    return m_image->cachedImage()->url();
+}
+
+void CSSImageValue::clearCachedImage()
+{
+    if (m_image)
+        m_image->cachedImage()->removeClient(this);
+    m_image = 0;
+    m_accessedImage = false;
+}
+
+} // namespace WebCore