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/*
* Copyright (C) 2017-2019 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.
*
* THIS SOFTWARE IS PROVIDED BY APPLE INC. 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 INC. 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.
*/
#pragma once
#if ENABLE(PREVIEW_CONVERTER)
#include "ResourceError.h"
#include "ResourceResponse.h"
#include "SharedBuffer.h"
#include <wtf/RefCounted.h>
#include <wtf/RetainPtr.h>
#include <wtf/TZoneMalloc.h>
#include <wtf/WeakPtr.h>
#include <wtf/text/WTFString.h>
OBJC_CLASS QLPreviewConverter;
OBJC_CLASS WebPreviewConverterDelegate;
namespace WebCore {
struct PreviewPlatformDelegate;
}
namespace WTF {
template<typename T> struct IsDeprecatedWeakRefSmartPointerException;
template<> struct IsDeprecatedWeakRefSmartPointerException<WebCore::PreviewPlatformDelegate> : std::true_type { };
}
namespace WebCore {
class ResourceError;
class ResourceRequest;
struct PreviewConverterClient;
struct PreviewConverterProvider;
struct PreviewPlatformDelegate : CanMakeWeakPtr<PreviewPlatformDelegate> {
virtual ~PreviewPlatformDelegate() = default;
virtual void delegateDidReceiveData(const FragmentedSharedBuffer&) = 0;
virtual void delegateDidFinishLoading() = 0;
virtual void delegateDidFailWithError(const ResourceError&) = 0;
};
class PreviewConverter final : private PreviewPlatformDelegate, public RefCounted<PreviewConverter> {
WTF_MAKE_TZONE_ALLOCATED(PreviewConverter);
WTF_MAKE_NONCOPYABLE(PreviewConverter);
public:
static Ref<PreviewConverter> create(const ResourceResponse& response, PreviewConverterProvider& provider)
{
return adoptRef(*new PreviewConverter(response, provider));
}
WEBCORE_EXPORT static bool supportsMIMEType(const String& mimeType);
~PreviewConverter();
ResourceRequest safeRequest(const ResourceRequest&) const;
ResourceResponse previewResponse() const;
WEBCORE_EXPORT String previewFileName() const;
WEBCORE_EXPORT String previewUTI() const;
const ResourceError& previewError() const;
const FragmentedSharedBuffer& previewData() const;
void failedUpdating();
void finishUpdating();
void updateMainResource();
bool hasClient(PreviewConverterClient&) const;
void addClient(PreviewConverterClient&);
void removeClient(PreviewConverterClient&);
WEBCORE_EXPORT static const String& passwordForTesting();
WEBCORE_EXPORT static void setPasswordForTesting(const String&);
private:
static UncheckedKeyHashSet<String, ASCIICaseInsensitiveHash> platformSupportedMIMETypes();
PreviewConverter(const ResourceResponse&, PreviewConverterProvider&);
ResourceResponse platformPreviewResponse() const;
bool isPlatformPasswordError(const ResourceError&) const;
template<typename T> void iterateClients(T&& callback);
void appendFromBuffer(const FragmentedSharedBuffer&);
void didAddClient(PreviewConverterClient&);
void didFailConvertingWithError(const ResourceError&);
void didFailUpdating();
void replayToClient(PreviewConverterClient&);
void platformAppend(const SharedBufferDataView&);
void platformFailedAppending();
void platformFinishedAppending();
void platformUnlockWithPassword(const String&);
// PreviewPlatformDelegate
void delegateDidReceiveData(const FragmentedSharedBuffer&) final;
void delegateDidFinishLoading() final;
void delegateDidFailWithError(const ResourceError&) final;
enum class State : uint8_t {
Updating,
FailedUpdating,
Converting,
FailedConverting,
FinishedConverting,
};
SharedBufferBuilder m_previewData;
ResourceError m_previewError;
ResourceResponse m_originalResponse;
State m_state { State::Updating };
Vector<WeakPtr<PreviewConverterClient>, 1> m_clients;
WeakPtr<PreviewConverterProvider> m_provider;
bool m_isInClientCallback { false };
size_t m_lengthAppended { 0 };
#if USE(QUICK_LOOK)
RetainPtr<WebPreviewConverterDelegate> m_platformDelegate;
RetainPtr<QLPreviewConverter> m_platformConverter;
#endif
};
} // namespace WebCore
#endif // ENABLE(PREVIEW_CONVERTER)
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