third_party/WebKit/Source/core/clipboard/DataTransferItem.h

/*
 * Copyright (C) 2011 Google 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.
 */

#ifndef DataTransferItem_h
#define DataTransferItem_h

#include "base/macros.h"
#include "core/CoreExport.h"
#include "platform/bindings/ScriptWrappable.h"
#include "platform/bindings/TraceWrapperMember.h"
#include "platform/heap/Handle.h"
#include "platform/wtf/Forward.h"

namespace blink {

class DataObjectItem;
class DataTransfer;
class ExecutionContext;
class File;
class ScriptState;
class V8FunctionStringCallback;

class CORE_EXPORT DataTransferItem final : public ScriptWrappable {
  DEFINE_WRAPPERTYPEINFO();

 public:
  static DataTransferItem* Create(DataTransfer*, DataObjectItem*);

  String kind() const;
  String type() const;

  void getAsString(ScriptState*, V8FunctionStringCallback*);
  File* getAsFile() const;

  DataTransfer* GetDataTransfer() { return data_transfer_.Get(); }
  DataObjectItem* GetDataObjectItem() { return item_.Get(); }

  void Trace(blink::Visitor*);
  virtual void TraceWrappers(const ScriptWrappableVisitor*) const;

 private:
  DataTransferItem(DataTransfer*, DataObjectItem*);

  void RunGetAsStringTask(ExecutionContext*,
                          V8FunctionStringCallback*,
                          const String& data);

  Member<DataTransfer> data_transfer_;
  Member<DataObjectItem> item_;
  HeapVector<TraceWrapperMember<V8FunctionStringCallback>> callbacks_;
  DISALLOW_COPY_AND_ASSIGN(DataTransferItem);
};

}  // namespace blink

#endif  // DataTransferItem_h