1/*
2 * Copyright (C) 2005, 2006, 2009 Apple Inc. All rights reserved.
3 *
4 * Redistribution and use in source and binary forms, with or without
5 * modification, are permitted provided that the following conditions
6 * are met:
7 *
8 * 1.  Redistributions of source code must retain the above copyright
9 *     notice, this list of conditions and the following disclaimer.
10 * 2.  Redistributions in binary form must reproduce the above copyright
11 *     notice, this list of conditions and the following disclaimer in the
12 *     documentation and/or other materials provided with the distribution.
13 * 3.  Neither the name of Apple Computer, Inc. ("Apple") nor the names of
14 *     its contributors may be used to endorse or promote products derived
15 *     from this software without specific prior written permission.
16 *
17 * THIS SOFTWARE IS PROVIDED BY APPLE AND ITS CONTRIBUTORS "AS IS" AND ANY
18 * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
19 * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
20 * DISCLAIMED. IN NO EVENT SHALL APPLE OR ITS CONTRIBUTORS BE LIABLE FOR ANY
21 * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
22 * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
23 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
24 * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
25 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
26 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
27 */
28
29#ifndef SubresourceLoader_h
30#define SubresourceLoader_h
31
32#include "FrameLoaderTypes.h"
33#include "ResourceLoader.h"
34
35#include <wtf/text/WTFString.h>
36
37namespace WebCore {
38
39class CachedResource;
40class CachedResourceLoader;
41class Document;
42class PageActivityAssertionToken;
43class ResourceRequest;
44
45class SubresourceLoader : public ResourceLoader {
46public:
47    static PassRefPtr<SubresourceLoader> create(Frame*, CachedResource*, const ResourceRequest&, const ResourceLoaderOptions&);
48
49    virtual ~SubresourceLoader();
50
51    void cancelIfNotFinishing();
52    virtual bool isSubresourceLoader();
53    CachedResource* cachedResource();
54
55private:
56    SubresourceLoader(Frame*, CachedResource*, const ResourceLoaderOptions&);
57
58    virtual bool init(const ResourceRequest&) OVERRIDE;
59
60    virtual void willSendRequest(ResourceRequest&, const ResourceResponse& redirectResponse) OVERRIDE;
61    virtual void didSendData(unsigned long long bytesSent, unsigned long long totalBytesToBeSent) OVERRIDE;
62    virtual void didReceiveResponse(const ResourceResponse&) OVERRIDE;
63    virtual void didReceiveData(const char*, int, long long encodedDataLength, DataPayloadType) OVERRIDE;
64    virtual void didReceiveBuffer(PassRefPtr<SharedBuffer>, long long encodedDataLength, DataPayloadType) OVERRIDE;
65    virtual void didFinishLoading(double finishTime) OVERRIDE;
66    virtual void didFail(const ResourceError&) OVERRIDE;
67    virtual void willCancel(const ResourceError&) OVERRIDE;
68    virtual void didCancel(const ResourceError&) OVERRIDE;
69
70#if USE(NETWORK_CFDATA_ARRAY_CALLBACK)
71    virtual bool supportsDataArray() OVERRIDE { return true; }
72    virtual void didReceiveDataArray(CFArrayRef) OVERRIDE;
73#endif
74    virtual void releaseResources() OVERRIDE;
75
76    bool checkForHTTPStatusCodeError();
77
78    void didReceiveDataOrBuffer(const char*, int, PassRefPtr<SharedBuffer>, long long encodedDataLength, DataPayloadType);
79
80    void notifyDone();
81
82    enum SubresourceLoaderState {
83        Uninitialized,
84        Initialized,
85        Finishing
86    };
87
88    class RequestCountTracker {
89    public:
90        RequestCountTracker(CachedResourceLoader*, CachedResource*);
91        ~RequestCountTracker();
92    private:
93        CachedResourceLoader* m_cachedResourceLoader;
94        CachedResource* m_resource;
95    };
96
97    CachedResource* m_resource;
98    bool m_loadingMultipartContent;
99    SubresourceLoaderState m_state;
100    OwnPtr<RequestCountTracker> m_requestCountTracker;
101    OwnPtr<PageActivityAssertionToken> m_activityAssertion;
102};
103
104}
105
106#endif // SubresourceLoader_h
107