1/*
2 * Copyright (C) 2011 Google Inc. All rights reserved.
3 * Copyright (C) 2017 Apple Inc. All rights reserved.
4 *
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions are
7 * met:
8 *
9 * * Redistributions of source code must retain the above copyright
10 * notice, this list of conditions and the following disclaimer.
11 * * Redistributions in binary form must reproduce the above
12 * copyright notice, this list of conditions and the following disclaimer
13 * in the documentation and/or other materials provided with the
14 * distribution.
15 * * Neither the name of Google Inc. nor the names of its
16 * contributors may be used to endorse or promote products derived from
17 * this software without specific prior written permission.
18 *
19 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
20 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
21 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
22 * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
23 * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
24 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
25 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
26 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
27 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
28 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
29 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
30 */
31
32#pragma once
33
34#include "DataTransfer.h"
35#include "ExceptionOr.h"
36#include "ScriptWrappable.h"
37#include <wtf/Forward.h>
38#include <wtf/Ref.h>
39#include <wtf/RefCounted.h>
40#include <wtf/WeakPtr.h>
41
42namespace WebCore {
43
44class DataTransferItem;
45class File;
46
47class DataTransferItemList final : public ScriptWrappable, public CanMakeWeakPtr<DataTransferItemList> {
48 WTF_MAKE_NONCOPYABLE(DataTransferItemList);
49 WTF_MAKE_ISO_ALLOCATED(DataTransferItemList);
50public:
51 DataTransferItemList(DataTransfer&);
52 ~DataTransferItemList();
53
54 // DataTransfer owns DataTransferItemList, and DataTransfer is kept alive as long as DataTransferItemList is alive.
55 void ref() { m_dataTransfer.ref(); }
56 void deref() { m_dataTransfer.deref(); }
57 DataTransfer& dataTransfer() { return m_dataTransfer; }
58
59 // DOM API
60 unsigned length() const;
61 RefPtr<DataTransferItem> item(unsigned index);
62 ExceptionOr<RefPtr<DataTransferItem>> add(const String& data, const String& type);
63 RefPtr<DataTransferItem> add(Ref<File>&&);
64 ExceptionOr<void> remove(unsigned index);
65 void clear();
66
67 void didClearStringData(const String& type);
68 void didSetStringData(const String& type);
69 bool hasItems() const { return m_items.hasValue(); }
70 const Vector<Ref<DataTransferItem>>& items() const
71 {
72 ASSERT(m_items);
73 return *m_items;
74 }
75
76private:
77 Vector<Ref<DataTransferItem>>& ensureItems() const;
78
79 DataTransfer& m_dataTransfer;
80 mutable Optional<Vector<Ref<DataTransferItem>>> m_items;
81};
82
83} // namespace WebCore
84