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/*
* Copyright (c) 2009, Google Inc. All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions are
* met:
*
* * Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* * Redistributions in binary form must reproduce the above
* copyright notice, this list of conditions and the following disclaimer
* in the documentation and/or other materials provided with the
* distribution.
* * Neither the name of Google Inc. nor the names of its
* contributors may be used to endorse or promote products derived from
* this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
* A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
* OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
* LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
#ifndef ApplicationCacheHost_h
#define ApplicationCacheHost_h
#include "KURL.h"
#include <wtf/Deque.h>
#include <wtf/OwnPtr.h>
#include <wtf/PassRefPtr.h>
#include <wtf/RefPtr.h>
#include <wtf/Vector.h>
namespace WebCore {
class DOMApplicationCache;
class DocumentLoader;
class Frame;
class ResourceLoader;
class ResourceError;
class ResourceRequest;
class ResourceResponse;
class SubstituteData;
class ApplicationCache;
class ApplicationCacheGroup;
class ApplicationCacheResource;
class ApplicationCacheStorage;
class ApplicationCacheHost {
WTF_MAKE_NONCOPYABLE(ApplicationCacheHost); WTF_MAKE_FAST_ALLOCATED;
public:
// The Status numeric values are specified in the HTML5 spec.
enum Status {
UNCACHED = 0,
IDLE = 1,
CHECKING = 2,
DOWNLOADING = 3,
UPDATEREADY = 4,
OBSOLETE = 5
};
enum EventID {
CHECKING_EVENT = 0,
ERROR_EVENT,
NOUPDATE_EVENT,
DOWNLOADING_EVENT,
PROGRESS_EVENT,
UPDATEREADY_EVENT,
CACHED_EVENT,
OBSOLETE_EVENT // Must remain the last value, this is used to size arrays.
};
#if ENABLE(INSPECTOR)
struct CacheInfo {
CacheInfo(const KURL& manifest, double creationTime, double updateTime, long long size)
: m_manifest(manifest)
, m_creationTime(creationTime)
, m_updateTime(updateTime)
, m_size(size) { }
KURL m_manifest;
double m_creationTime;
double m_updateTime;
long long m_size;
};
struct ResourceInfo {
ResourceInfo(const KURL& resource, bool isMaster, bool isManifest, bool isFallback, bool isForeign, bool isExplicit, long long size)
: m_resource(resource)
, m_isMaster(isMaster)
, m_isManifest(isManifest)
, m_isFallback(isFallback)
, m_isForeign(isForeign)
, m_isExplicit(isExplicit)
, m_size(size) { }
KURL m_resource;
bool m_isMaster;
bool m_isManifest;
bool m_isFallback;
bool m_isForeign;
bool m_isExplicit;
long long m_size;
};
typedef Vector<ResourceInfo> ResourceInfoList;
#endif
ApplicationCacheHost(DocumentLoader*);
~ApplicationCacheHost();
void selectCacheWithoutManifest();
void selectCacheWithManifest(const KURL& manifestURL);
void maybeLoadMainResource(ResourceRequest&, SubstituteData&);
void maybeLoadMainResourceForRedirect(ResourceRequest&, SubstituteData&);
bool maybeLoadFallbackForMainResponse(const ResourceRequest&, const ResourceResponse&);
void mainResourceDataReceived(const char* data, int length, long long encodedDataLength, bool allAtOnce);
void finishedLoadingMainResource();
void failedLoadingMainResource();
bool maybeLoadResource(ResourceLoader*, ResourceRequest&, const KURL& originalURL);
bool maybeLoadFallbackForRedirect(ResourceLoader*, ResourceRequest&, const ResourceResponse&);
bool maybeLoadFallbackForResponse(ResourceLoader*, const ResourceResponse&);
bool maybeLoadFallbackForError(ResourceLoader*, const ResourceError&);
bool maybeLoadSynchronously(ResourceRequest&, ResourceError&, ResourceResponse&, Vector<char>& data);
void maybeLoadFallbackSynchronously(const ResourceRequest&, ResourceError&, ResourceResponse&, Vector<char>& data);
bool canCacheInPageCache();
Status status() const;
bool update();
bool swapCache();
void abort();
void setDOMApplicationCache(DOMApplicationCache*);
void notifyDOMApplicationCache(EventID, int progressTotal, int progressDone);
void stopLoadingInFrame(Frame*);
void stopDeferringEvents(); // Also raises the events that have been queued up.
#if ENABLE(INSPECTOR)
void fillResourceList(ResourceInfoList*);
CacheInfo applicationCacheInfo();
#endif
bool shouldLoadResourceFromApplicationCache(const ResourceRequest&, ApplicationCacheResource*&);
bool getApplicationCacheFallbackResource(const ResourceRequest&, ApplicationCacheResource*&, ApplicationCache* = 0);
private:
bool isApplicationCacheEnabled();
DocumentLoader* documentLoader() const { return m_documentLoader; }
struct DeferredEvent {
EventID eventID;
int progressTotal;
int progressDone;
DeferredEvent(EventID id, int total, int done) : eventID(id), progressTotal(total), progressDone(done) { }
};
DOMApplicationCache* m_domApplicationCache;
DocumentLoader* m_documentLoader;
bool m_defersEvents; // Events are deferred until after document onload.
Vector<DeferredEvent> m_deferredEvents;
void dispatchDOMEvent(EventID, int progressTotal, int progressDone);
friend class ApplicationCacheGroup;
friend class ApplicationCacheStorage;
bool scheduleLoadFallbackResourceFromApplicationCache(ResourceLoader*, ApplicationCache* = 0);
void setCandidateApplicationCacheGroup(ApplicationCacheGroup* group);
ApplicationCacheGroup* candidateApplicationCacheGroup() const { return m_candidateApplicationCacheGroup; }
void setApplicationCache(PassRefPtr<ApplicationCache> applicationCache);
ApplicationCache* applicationCache() const { return m_applicationCache.get(); }
ApplicationCache* mainResourceApplicationCache() const { return m_mainResourceApplicationCache.get(); }
bool maybeLoadFallbackForMainError(const ResourceRequest&, const ResourceError&);
// The application cache that the document loader is associated with (if any).
RefPtr<ApplicationCache> m_applicationCache;
// Before an application cache has finished loading, this will be the candidate application
// group that the document loader is associated with.
ApplicationCacheGroup* m_candidateApplicationCacheGroup;
// This is the application cache the main resource was loaded from (if any).
RefPtr<ApplicationCache> m_mainResourceApplicationCache;
};
} // namespace WebCore
#endif // ApplicationCacheHost_h
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