1/*
2 * Copyright (c) 2008, 2009, 2012 Google Inc. All rights reserved.
3 *
4 * Redistribution and use in source and binary forms, with or without
5 * modification, are permitted provided that the following conditions are
6 * met:
7 *
8 *     * Redistributions of source code must retain the above copyright
9 * notice, this list of conditions and the following disclaimer.
10 *     * Redistributions in binary form must reproduce the above
11 * copyright notice, this list of conditions and the following disclaimer
12 * in the documentation and/or other materials provided with the
13 * distribution.
14 *     * Neither the name of Google Inc. nor the names of its
15 * contributors may be used to endorse or promote products derived from
16 * this software without specific prior written permission.
17 *
18 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
19 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
20 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
21 * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
22 * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
23 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
24 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
25 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
26 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
27 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
28 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
29 */
30
31#include "config.h"
32#include "core/clipboard/DataObject.h"
33
34#include "core/clipboard/Pasteboard.h"
35#include "platform/clipboard/ClipboardMimeTypes.h"
36#include "platform/clipboard/ClipboardUtilities.h"
37#include "public/platform/Platform.h"
38#include "public/platform/WebClipboard.h"
39
40namespace blink {
41
42PassRefPtrWillBeRawPtr<DataObject> DataObject::createFromPasteboard(PasteMode pasteMode)
43{
44    RefPtrWillBeRawPtr<DataObject> dataObject = create();
45    blink::WebClipboard::Buffer buffer = Pasteboard::generalPasteboard()->buffer();
46    uint64_t sequenceNumber = blink::Platform::current()->clipboard()->sequenceNumber(buffer);
47    bool ignored;
48    blink::WebVector<blink::WebString> webTypes = blink::Platform::current()->clipboard()->readAvailableTypes(buffer, &ignored);
49    ListHashSet<String> types;
50    for (size_t i = 0; i < webTypes.size(); ++i)
51        types.add(webTypes[i]);
52    for (ListHashSet<String>::const_iterator it = types.begin(); it != types.end(); ++it) {
53        if (pasteMode == PlainTextOnly && *it != mimeTypeTextPlain)
54            continue;
55        dataObject->m_itemList.append(DataObjectItem::createFromPasteboard(*it, sequenceNumber));
56    }
57    return dataObject.release();
58}
59
60PassRefPtrWillBeRawPtr<DataObject> DataObject::create()
61{
62    return adoptRefWillBeNoop(new DataObject());
63}
64
65PassRefPtrWillBeRawPtr<DataObject> DataObject::copy() const
66{
67    return adoptRefWillBeNoop(new DataObject(*this));
68}
69
70DataObject::~DataObject()
71{
72}
73
74size_t DataObject::length() const
75{
76    return m_itemList.size();
77}
78
79PassRefPtrWillBeRawPtr<DataObjectItem> DataObject::item(unsigned long index)
80{
81    if (index >= length())
82        return nullptr;
83    return m_itemList[index];
84}
85
86void DataObject::deleteItem(unsigned long index)
87{
88    if (index >= length())
89        return;
90    m_itemList.remove(index);
91}
92
93void DataObject::clearAll()
94{
95    m_itemList.clear();
96}
97
98PassRefPtrWillBeRawPtr<DataObjectItem> DataObject::add(const String& data, const String& type)
99{
100    RefPtrWillBeRawPtr<DataObjectItem> item = DataObjectItem::createFromString(type, data);
101    if (!internalAddStringItem(item))
102        return nullptr;
103    return item;
104}
105
106PassRefPtrWillBeRawPtr<DataObjectItem> DataObject::add(PassRefPtrWillBeRawPtr<File> file)
107{
108    if (!file)
109        return nullptr;
110
111    RefPtrWillBeRawPtr<DataObjectItem> item = DataObjectItem::createFromFile(file);
112    m_itemList.append(item);
113    return item;
114}
115
116void DataObject::clearData(const String& type)
117{
118    for (size_t i = 0; i < m_itemList.size(); ++i) {
119        if (m_itemList[i]->kind() == DataObjectItem::StringKind && m_itemList[i]->type() == type) {
120            // Per the spec, type must be unique among all items of kind 'string'.
121            m_itemList.remove(i);
122            return;
123        }
124    }
125}
126
127ListHashSet<String> DataObject::types() const
128{
129    ListHashSet<String> results;
130    bool containsFiles = false;
131    for (size_t i = 0; i < m_itemList.size(); ++i) {
132        switch (m_itemList[i]->kind()) {
133        case DataObjectItem::StringKind:
134            results.add(m_itemList[i]->type());
135            break;
136        case DataObjectItem::FileKind:
137            containsFiles = true;
138            break;
139        }
140    }
141    if (containsFiles)
142        results.add(mimeTypeFiles);
143    return results;
144}
145
146String DataObject::getData(const String& type) const
147{
148    for (size_t i = 0; i < m_itemList.size(); ++i)  {
149        if (m_itemList[i]->kind() == DataObjectItem::StringKind && m_itemList[i]->type() == type)
150            return m_itemList[i]->getAsString();
151    }
152    return String();
153}
154
155void DataObject::setData(const String& type, const String& data)
156{
157    clearData(type);
158    if (!add(data, type))
159        ASSERT_NOT_REACHED();
160}
161
162void DataObject::urlAndTitle(String& url, String* title) const
163{
164    RefPtrWillBeRawPtr<DataObjectItem> item = findStringItem(mimeTypeTextURIList);
165    if (!item)
166        return;
167    url = convertURIListToURL(item->getAsString());
168    if (title)
169        *title = item->title();
170}
171
172void DataObject::setURLAndTitle(const String& url, const String& title)
173{
174    clearData(mimeTypeTextURIList);
175    internalAddStringItem(DataObjectItem::createFromURL(url, title));
176}
177
178void DataObject::htmlAndBaseURL(String& html, KURL& baseURL) const
179{
180    RefPtrWillBeRawPtr<DataObjectItem> item = findStringItem(mimeTypeTextHTML);
181    if (!item)
182        return;
183    html = item->getAsString();
184    baseURL = item->baseURL();
185}
186
187void DataObject::setHTMLAndBaseURL(const String& html, const KURL& baseURL)
188{
189    clearData(mimeTypeTextHTML);
190    internalAddStringItem(DataObjectItem::createFromHTML(html, baseURL));
191}
192
193bool DataObject::containsFilenames() const
194{
195    for (size_t i = 0; i < m_itemList.size(); ++i) {
196        if (m_itemList[i]->isFilename())
197            return true;
198    }
199    return false;
200}
201
202Vector<String> DataObject::filenames() const
203{
204    Vector<String> results;
205    for (size_t i = 0; i < m_itemList.size(); ++i) {
206        if (m_itemList[i]->isFilename())
207            results.append(static_cast<File*>(m_itemList[i]->getAsFile().get())->path());
208    }
209    return results;
210}
211
212void DataObject::addFilename(const String& filename, const String& displayName)
213{
214    internalAddFileItem(DataObjectItem::createFromFile(File::createForUserProvidedFile(filename, displayName)));
215}
216
217void DataObject::addSharedBuffer(const String& name, PassRefPtr<SharedBuffer> buffer)
218{
219    internalAddFileItem(DataObjectItem::createFromSharedBuffer(name, buffer));
220}
221
222DataObject::DataObject()
223    : m_modifierKeyState(0)
224{
225}
226
227DataObject::DataObject(const DataObject& other)
228    : m_itemList(other.m_itemList)
229    , m_modifierKeyState(0)
230{
231}
232
233PassRefPtrWillBeRawPtr<DataObjectItem> DataObject::findStringItem(const String& type) const
234{
235    for (size_t i = 0; i < m_itemList.size(); ++i) {
236        if (m_itemList[i]->kind() == DataObjectItem::StringKind && m_itemList[i]->type() == type)
237            return m_itemList[i];
238    }
239    return nullptr;
240}
241
242bool DataObject::internalAddStringItem(PassRefPtrWillBeRawPtr<DataObjectItem> item)
243{
244    ASSERT(item->kind() == DataObjectItem::StringKind);
245    for (size_t i = 0; i < m_itemList.size(); ++i) {
246        if (m_itemList[i]->kind() == DataObjectItem::StringKind && m_itemList[i]->type() == item->type())
247            return false;
248    }
249
250    m_itemList.append(item);
251    return true;
252}
253
254void DataObject::internalAddFileItem(PassRefPtrWillBeRawPtr<DataObjectItem> item)
255{
256    ASSERT(item->kind() == DataObjectItem::FileKind);
257    m_itemList.append(item);
258}
259
260void DataObject::trace(Visitor* visitor)
261{
262#if ENABLE(OILPAN)
263    visitor->trace(m_itemList);
264    HeapSupplementable<DataObject>::trace(visitor);
265#endif
266}
267
268} // namespace blink
269