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/*
* Copyright (C) 2011 Google Inc. All rights reserved.
* Copyright (C) 2017 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:
*
* * Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* * 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.
* * Neither the name of Google Inc. 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 THE COPYRIGHT HOLDERS AND 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 THE COPYRIGHT
* OWNER OR 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
#include "ContextDestructionObserver.h"
#include "DataTransfer.h"
#include "ExceptionOr.h"
#include "ScriptWrappable.h"
#include <wtf/Forward.h>
#include <wtf/Ref.h>
#include <wtf/RefCounted.h>
#include <wtf/WeakPtr.h>
namespace WebCore {
class DataTransferItem;
class File;
class DataTransferItemList final : public ScriptWrappable, public ContextDestructionObserver, public CanMakeWeakPtr<DataTransferItemList> {
WTF_MAKE_NONCOPYABLE(DataTransferItemList);
WTF_MAKE_ISO_ALLOCATED(DataTransferItemList);
public:
DataTransferItemList(Document&, DataTransfer&);
~DataTransferItemList();
// DataTransfer owns DataTransferItemList, and DataTransfer is kept alive as long as DataTransferItemList is alive.
void ref() { m_dataTransfer.ref(); }
void deref() { m_dataTransfer.deref(); }
DataTransfer& dataTransfer() { return m_dataTransfer; }
// DOM API
unsigned length() const;
RefPtr<DataTransferItem> item(unsigned index);
ExceptionOr<RefPtr<DataTransferItem>> add(const String& data, const String& type);
RefPtr<DataTransferItem> add(Ref<File>&&);
ExceptionOr<void> remove(unsigned index);
void clear();
void didClearStringData(const String& type);
void didSetStringData(const String& type);
bool hasItems() const { return m_items.has_value(); }
const Vector<Ref<DataTransferItem>>& items() const
{
ASSERT(m_items);
return *m_items;
}
private:
Vector<Ref<DataTransferItem>>& ensureItems() const;
Document* document() const;
DataTransfer& m_dataTransfer;
mutable std::optional<Vector<Ref<DataTransferItem>>> m_items;
};
} // namespace WebCore