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#include "config.h"
33#include "DataTransferItem.h"
34
35#include "DOMFileSystem.h"
36#include "DataTransferItemList.h"
37#include "Document.h"
38#include "File.h"
39#include "FileSystemDirectoryEntry.h"
40#include "FileSystemFileEntry.h"
41#include "ScriptExecutionContext.h"
42#include "StringCallback.h"
43#include <wtf/FileSystem.h>
44
45namespace WebCore {
46
47Ref<DataTransferItem> DataTransferItem::create(WeakPtr<DataTransferItemList>&& list, const String& type)
48{
49 return adoptRef(*new DataTransferItem(WTFMove(list), type));
50}
51
52Ref<DataTransferItem> DataTransferItem::create(WeakPtr<DataTransferItemList>&& list, const String& type, Ref<File>&& file)
53{
54 return adoptRef(*new DataTransferItem(WTFMove(list), type, WTFMove(file)));
55}
56
57DataTransferItem::DataTransferItem(WeakPtr<DataTransferItemList>&& list, const String& type)
58 : m_list(WTFMove(list))
59 , m_type(type)
60{
61}
62
63DataTransferItem::DataTransferItem(WeakPtr<DataTransferItemList>&& list, const String& type, Ref<File>&& file)
64 : m_list(WTFMove(list))
65 , m_type(type)
66 , m_file(WTFMove(file))
67{
68}
69
70DataTransferItem::~DataTransferItem() = default;
71
72void DataTransferItem::clearListAndPutIntoDisabledMode()
73{
74 m_list.clear();
75}
76
77String DataTransferItem::kind() const
78{
79 return m_file ? "file"_s : "string"_s;
80}
81
82String DataTransferItem::type() const
83{
84 return isInDisabledMode() ? String() : m_type;
85}
86
87void DataTransferItem::getAsString(Document& document, RefPtr<StringCallback>&& callback) const
88{
89 if (!callback || !m_list || m_file)
90 return;
91
92 auto& dataTransfer = m_list->dataTransfer();
93 if (!dataTransfer.canReadData())
94 return;
95
96 // FIXME: Make this async.
97 callback->scheduleCallback(document, dataTransfer.getDataForItem(document, m_type));
98}
99
100RefPtr<File> DataTransferItem::getAsFile() const
101{
102 if (!m_list || !m_list->dataTransfer().canReadData())
103 return nullptr;
104 return m_file.copyRef();
105}
106
107RefPtr<FileSystemEntry> DataTransferItem::getAsEntry(ScriptExecutionContext& context) const
108{
109 auto file = getAsFile();
110 if (!file)
111 return nullptr;
112
113 return DOMFileSystem::createEntryForFile(context, *file);
114}
115
116} // namespace WebCore
117