gecko/dom/file/MetadataHelper.h
Ryan VanderMeulen f427c884c8 Backed out 6 changesets (bug 939294) for B2G bustage on a CLOSED TREE.
Backed out changeset 8c3aa9973da0 (bug 939294)
Backed out changeset 37098c13e59e (bug 939294)
Backed out changeset 7c9ade6c871c (bug 939294)
Backed out changeset fed59539afc1 (bug 939294)
Backed out changeset 89e9d3fa16fc (bug 939294)
Backed out changeset c97e58ebc5f4 (bug 939294)
2014-01-09 14:17:39 -05:00

124 lines
2.4 KiB
C++

/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
/* vim: set ts=2 et sw=2 tw=80: */
/* This Source Code Form is subject to the terms of the Mozilla Public
* License, v. 2.0. If a copy of the MPL was not distributed with this file,
* You can obtain one at http://mozilla.org/MPL/2.0/. */
#ifndef mozilla_dom_file_metadatahelper_h__
#define mozilla_dom_file_metadatahelper_h__
#include "mozilla/Attributes.h"
#include "FileCommon.h"
#include "nsIFileStreams.h"
#include "DictionaryHelpers.h"
#include "AsyncHelper.h"
#include "FileHelper.h"
class nsIFileStream;
BEGIN_FILE_NAMESPACE
class MetadataHelper;
class MetadataParameters
{
friend class MetadataHelper;
public:
NS_INLINE_DECL_THREADSAFE_REFCOUNTING(MetadataParameters)
nsresult
Init(JSContext* aCx, const JS::Value* aVal)
{
return mConfig.Init(aCx, aVal);
}
void
Init(bool aRequestSize, bool aRequestLastModified)
{
mConfig.size = aRequestSize;
mConfig.lastModified = aRequestLastModified;
}
bool
IsConfigured() const
{
return mConfig.size || mConfig.lastModified;
}
bool
SizeRequested() const
{
return mConfig.size;
}
bool
LastModifiedRequested() const
{
return mConfig.lastModified;
}
uint64_t
Size() const
{
return mSize;
}
int64_t
LastModified() const
{
return mLastModified;
}
private:
mozilla::idl::DOMFileMetadataParameters mConfig;
uint64_t mSize;
int64_t mLastModified;
};
class MetadataHelper : public FileHelper
{
public:
MetadataHelper(LockedFile* aLockedFile,
FileRequest* aFileRequest,
MetadataParameters* aParams)
: FileHelper(aLockedFile, aFileRequest),
mParams(aParams)
{ }
nsresult
DoAsyncRun(nsISupports* aStream) MOZ_OVERRIDE;
nsresult
GetSuccessResult(JSContext* aCx, JS::Value* aVal) MOZ_OVERRIDE;
protected:
class AsyncMetadataGetter : public AsyncHelper
{
public:
AsyncMetadataGetter(nsISupports* aStream, MetadataParameters* aParams,
bool aReadWrite)
: AsyncHelper(aStream),
mParams(aParams), mReadWrite(aReadWrite)
{ }
protected:
nsresult
DoStreamWork(nsISupports* aStream) MOZ_OVERRIDE;
private:
nsRefPtr<MetadataParameters> mParams;
bool mReadWrite;
};
nsRefPtr<MetadataParameters> mParams;
};
END_FILE_NAMESPACE
#endif // mozilla_dom_file_metadatahelper_h__