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/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
/* 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_DataTransferItem_h
#define mozilla_dom_DataTransferItem_h
#include "mozilla/ErrorResult.h"
#include "mozilla/dom/DataTransfer.h"
#include "mozilla/dom/DOMString.h"
#include "mozilla/dom/File.h"
namespace mozilla {
namespace dom {
class FileSystemEntry;
class FunctionStringCallback;
class DataTransferItem final : public nsISupports
, public nsWrapperCache
{
public:
NS_DECL_CYCLE_COLLECTING_ISUPPORTS
NS_DECL_CYCLE_COLLECTION_SCRIPT_HOLDER_CLASS(DataTransferItem);
public:
// The spec only talks about the "file" and "string" kinds. Due to the Moz*
// APIs, it is possible to attach any type to a DataTransferItem, meaning that
// we can have other kinds then just FILE and STRING. These others are simply
// marked as "other" and can only be produced throug the Moz* APIs.
enum eKind {
KIND_FILE,
KIND_STRING,
KIND_OTHER,
};
DataTransferItem(DataTransfer* aDataTransfer, const nsAString& aType,
eKind aKind = KIND_OTHER)
: mIndex(0)
, mChromeOnly(false)
, mKind(aKind)
, mType(aType)
, mDataTransfer(aDataTransfer)
{
MOZ_ASSERT(mDataTransfer, "Must be associated with a DataTransfer");
}
already_AddRefed<DataTransferItem> Clone(DataTransfer* aDataTransfer) const;
virtual JSObject* WrapObject(JSContext* aCx, JS::Handle<JSObject*> aGivenProto) override;
void GetAsString(FunctionStringCallback* aCallback,
nsIPrincipal& aSubjectPrincipal,
ErrorResult& aRv);
void GetKind(nsAString& aKind) const
{
switch (mKind) {
case KIND_FILE:
aKind = NS_LITERAL_STRING("file");
return;
case KIND_STRING:
aKind = NS_LITERAL_STRING("string");
return;
default:
aKind = NS_LITERAL_STRING("other");
return;
}
}
void GetInternalType(nsAString& aType) const
{
aType = mType;
}
void GetType(nsAString& aType);
eKind Kind() const
{
return mKind;
}
already_AddRefed<File>
GetAsFile(nsIPrincipal& aSubjectPrincipal, ErrorResult& aRv);
already_AddRefed<FileSystemEntry>
GetAsEntry(nsIPrincipal& aSubjectPrincipal, ErrorResult& aRv);
DataTransfer* GetParentObject() const
{
return mDataTransfer;
}
nsIPrincipal* Principal() const
{
return mPrincipal;
}
void SetPrincipal(nsIPrincipal* aPrincipal)
{
mPrincipal = aPrincipal;
}
already_AddRefed<nsIVariant> DataNoSecurityCheck();
already_AddRefed<nsIVariant> Data(nsIPrincipal* aPrincipal, ErrorResult& aRv);
// Note: This can modify the mKind. Callers of this method must let the
// relevant DataTransfer know, because its types list can change as a result.
void SetData(nsIVariant* aData);
uint32_t Index() const
{
return mIndex;
}
void SetIndex(uint32_t aIndex)
{
mIndex = aIndex;
}
void FillInExternalData();
bool ChromeOnly() const
{
return mChromeOnly;
}
void SetChromeOnly(bool aChromeOnly)
{
mChromeOnly = aChromeOnly;
}
static eKind KindFromData(nsIVariant* aData);
private:
~DataTransferItem() {}
already_AddRefed<File> CreateFileFromInputStream(nsIInputStream* aStream);
// The index in the 2d mIndexedItems array
uint32_t mIndex;
bool mChromeOnly;
eKind mKind;
const nsString mType;
nsCOMPtr<nsIVariant> mData;
nsCOMPtr<nsIPrincipal> mPrincipal;
RefPtr<DataTransfer> mDataTransfer;
// File cache for nsIFile application/x-moz-file entries.
RefPtr<File> mCachedFile;
};
} // namespace dom
} // namespace mozilla
#endif /* mozilla_dom_DataTransferItem_h */
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