1 files changed, 102 insertions, 0 deletions
diff --git a/Source/WebCore/css/CSSImageValue.cpp b/Source/WebCore/css/CSSImageValue.cpp
new file mode 100644
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+++ b/Source/WebCore/css/CSSImageValue.cpp
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+/*
+ * (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 "MemoryCache.h"
+#include "CachedImage.h"
+#include "CachedResourceLoader.h"
+#include "StyleCachedImage.h"
+#include "StylePendingImage.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->isCachedImage())
+        static_cast<StyleCachedImage*>(m_image.get())->cachedImage()->removeClient(this);
+}
+
+StyleImage* CSSImageValue::cachedOrPendingImage()
+{
+    if (getIdent() == CSSValueNone)
+        return 0;
+
+    if (!m_image)
+        m_image = StylePendingImage::create(this);
+
+    return m_image.get();
+}
+
+StyleCachedImage* CSSImageValue::cachedImage(CachedResourceLoader* loader)
+{
+    return cachedImage(loader, getStringValue());
+}
+
+StyleCachedImage* CSSImageValue::cachedImage(CachedResourceLoader* loader, const String& url)
+{
+    ASSERT(loader);
+    if (!loader) {
+        // FIXME: Remove when http://webkit.org/b/53045 is fixed.
+        CRASH();
+    }
+
+    if (!m_accessedImage) {
+        m_accessedImage = true;
+
+        if (CachedImage* cachedImage = loader->requestImage(url)) {
+            cachedImage->addClient(this);
+            m_image = StyleCachedImage::create(cachedImage);
+        }
+    }
+    
+    return (m_image && m_image->isCachedImage()) ? static_cast<StyleCachedImage*>(m_image.get()) : 0;
+}
+
+String CSSImageValue::cachedImageURL()
+{
+    if (!m_image || !m_image->isCachedImage())
+        return String();
+    return static_cast<StyleCachedImage*>(m_image.get())->cachedImage()->url();
+}
+
+void CSSImageValue::clearCachedImage()
+{
+    if (m_image && m_image->isCachedImage())
+        static_cast<StyleCachedImage*>(m_image.get())->cachedImage()->removeClient(this);
+    m_image = 0;
+    m_accessedImage = false;
+}
+
+} // namespace WebCore