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/*
* Copyright (C) 2005, 2006, 2011 Apple 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:
*
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. 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.
* 3. Neither the name of Apple Computer, Inc. ("Apple") 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 APPLE AND ITS 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 APPLE OR ITS 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 ResourceLoader_h
#define ResourceLoader_h
#include "core/CoreExport.h"
#include "core/fetch/ResourceLoaderOptions.h"
#include "platform/network/ResourceRequest.h"
#include "public/platform/WebURLLoader.h"
#include "public/platform/WebURLLoaderClient.h"
#include "wtf/Forward.h"
#include "wtf/RefCounted.h"
namespace blink {
class Resource;
class ResourceError;
class ResourceFetcher;
class CORE_EXPORT ResourceLoader final : public GarbageCollectedFinalized<ResourceLoader>, protected WebURLLoaderClient {
public:
static ResourceLoader* create(ResourceFetcher*, Resource*);
~ResourceLoader() override;
DECLARE_TRACE();
// Promptly release m_loader.
EAGERLY_FINALIZE();
void start(ResourceRequest&);
void cancel();
void cancel(const ResourceError&);
void cancelIfNotFinishing();
Resource* cachedResource() { return m_resource.get(); }
void setDefersLoading(bool);
void didChangePriority(ResourceLoadPriority, int intraPriorityValue);
// WebURLLoaderClient
void willFollowRedirect(WebURLLoader*, WebURLRequest&, const WebURLResponse& redirectResponse) override;
void didSendData(WebURLLoader*, unsigned long long bytesSent, unsigned long long totalBytesToBeSent) override;
void didReceiveResponse(WebURLLoader*, const WebURLResponse&) override;
void didReceiveResponse(WebURLLoader*, const WebURLResponse&, WebDataConsumerHandle*) override;
void didReceiveData(WebURLLoader*, const char*, int, int encodedDataLength) override;
void didReceiveCachedMetadata(WebURLLoader*, const char* data, int length) override;
void didFinishLoading(WebURLLoader*, double finishTime, int64_t encodedDataLength) override;
void didFail(WebURLLoader*, const WebURLError&) override;
void didDownloadData(WebURLLoader*, int, int) override;
void didFinishLoadingOnePart(double finishTime, int64_t encodedDataLength);
private:
// Assumes ResourceFetcher and Resource are non-null.
ResourceLoader(ResourceFetcher*, Resource*);
void requestSynchronously(ResourceRequest&);
bool responseNeedsAccessControlCheck() const;
ResourceRequest& applyOptions(ResourceRequest&) const;
void releaseResources();
OwnPtr<WebURLLoader> m_loader;
Member<ResourceFetcher> m_fetcher;
bool m_notifiedLoadComplete;
enum ConnectionState {
ConnectionStateNew,
ConnectionStateStarted,
ConnectionStateReceivedResponse,
ConnectionStateReceivingData,
ConnectionStateFinishedLoading,
ConnectionStateCanceled,
ConnectionStateFailed,
ConnectionStateReleased
};
bool isFinishing() { return m_state >= ConnectionStateFinishedLoading && m_state <= ConnectionStateFailed; }
RefPtrWillBeMember<Resource> m_resource;
// Used for sanity checking to make sure we don't experience illegal state
// transitions.
ConnectionState m_state;
};
} // namespace blink
#endif
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