--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/WebCore/loader/DocLoader.h	Fri Sep 17 09:02:29 2010 +0300
@@ -0,0 +1,138 @@
+/*
+    Copyright (C) 1998 Lars Knoll (knoll@mpi-hd.mpg.de)
+    Copyright (C) 2001 Dirk Mueller <mueller@kde.org>
+    Copyright (C) 2004, 2005, 2006 Apple Computer, Inc.
+    Copyright (C) 2009 Torch Mobile Inc. http://www.torchmobile.com/
+
+    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.
+
+    This class provides all functionality needed for loading images, style sheets and html
+    pages from the web. It has a memory cache for these objects.
+*/
+
+#ifndef DocLoader_h
+#define DocLoader_h
+
+#include "CachedResource.h"
+#include "CachedResourceHandle.h"
+#include "CachePolicy.h"
+#include "StringHash.h"
+#include <wtf/HashMap.h>
+#include <wtf/HashSet.h>
+#include <wtf/ListHashSet.h>
+
+namespace WebCore {
+
+class CachedCSSStyleSheet;
+class CachedFont;
+class CachedImage;
+class CachedScript;
+class CachedXSLStyleSheet;
+class Document;
+class Frame;
+class ImageLoader;
+class KURL;
+
+// The DocLoader manages the loading of scripts/images/stylesheets for a single document.
+class DocLoader : public Noncopyable {
+friend class Cache;
+friend class ImageLoader;
+
+public:
+    DocLoader(Document*);
+    ~DocLoader();
+
+    CachedImage* requestImage(const String& url);
+    CachedCSSStyleSheet* requestCSSStyleSheet(const String& url, const String& charset);
+    CachedCSSStyleSheet* requestUserCSSStyleSheet(const String& url, const String& charset);
+    CachedScript* requestScript(const String& url, const String& charset);
+    CachedFont* requestFont(const String& url);
+
+#if ENABLE(XSLT)
+    CachedXSLStyleSheet* requestXSLStyleSheet(const String& url);
+#endif
+#if ENABLE(XBL)
+    CachedXBLDocument* requestXBLDocument(const String &url);
+#endif
+#if ENABLE(LINK_PREFETCH)
+    CachedResource* requestLinkPrefetch(const String &url);
+#endif
+
+    // Logs an access denied message to the console for the specified URL.
+    void printAccessDeniedMessage(const KURL& url) const;
+
+    CachedResource* cachedResource(const String& url) const { return m_documentResources.get(url).get(); }
+    
+    typedef HashMap<String, CachedResourceHandle<CachedResource> > DocumentResourceMap;
+    const DocumentResourceMap& allCachedResources() const { return m_documentResources; }
+
+    bool autoLoadImages() const { return m_autoLoadImages; }
+    void setAutoLoadImages(bool);
+    
+    CachePolicy cachePolicy() const;
+    
+    Frame* frame() const; // Can be NULL
+    Document* doc() const { return m_doc; }
+
+    void removeCachedResource(CachedResource*) const;
+
+    void setLoadInProgress(bool);
+    bool loadInProgress() const { return m_loadInProgress; }
+    
+    void setAllowStaleResources(bool allowStaleResources) { m_allowStaleResources = allowStaleResources; }
+
+    void incrementRequestCount(const CachedResource*);
+    void decrementRequestCount(const CachedResource*);
+    int requestCount();
+    
+    void clearPreloads();
+    void clearPendingPreloads();
+    void preload(CachedResource::Type, const String& url, const String& charset, bool referencedFromBody);
+    void checkForPendingPreloads();
+    void printPreloadStats();
+    
+private:
+    CachedResource* requestResource(CachedResource::Type, const String& url, const String& charset, bool isPreload = false);
+    void requestPreload(CachedResource::Type, const String& url, const String& charset);
+
+    void checkForReload(const KURL&);
+    void checkCacheObjectStatus(CachedResource*);
+    bool canRequest(CachedResource::Type, const KURL&);
+    
+    Cache* m_cache;
+    HashSet<String> m_reloadedURLs;
+    mutable DocumentResourceMap m_documentResources;
+    Document* m_doc;
+    
+    int m_requestCount;
+    
+    OwnPtr<ListHashSet<CachedResource*> > m_preloads;
+    struct PendingPreload {
+        CachedResource::Type m_type;
+        String m_url;
+        String m_charset;
+    };
+    Vector<PendingPreload> m_pendingPreloads;
+    
+    //29 bits left
+    bool m_autoLoadImages : 1;
+    bool m_loadInProgress : 1;
+    bool m_allowStaleResources : 1;
+};
+
+}
+
+#endif