1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
|
// Copyright 2017 The Chromium Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#include "components/exo/data_offer.h"
#include "base/files/file_util.h"
#include "base/memory/ref_counted_memory.h"
#include "base/pickle.h"
#include "base/strings/utf_string_conversions.h"
#include "base/task_scheduler/post_task.h"
#include "components/exo/data_offer_delegate.h"
#include "components/exo/data_offer_observer.h"
#include "components/exo/file_helper.h"
#include "ui/base/clipboard/clipboard.h"
#include "ui/base/dragdrop/file_info.h"
#include "ui/base/dragdrop/os_exchange_data.h"
#include "url/gurl.h"
namespace exo {
namespace {
constexpr char kTextMimeTypeUtf8[] = "text/plain;charset=utf-8";
constexpr char kUtf8String[] = "UTF8_STRING";
constexpr char kUriListSeparator[] = "\r\n";
class RefCountedString16 : public base::RefCountedMemory {
public:
static scoped_refptr<RefCountedString16> TakeString(
base::string16&& to_destroy) {
scoped_refptr<RefCountedString16> self(new RefCountedString16);
to_destroy.swap(self->data_);
return self;
}
// Overridden from base::RefCountedMemory:
const unsigned char* front() const override {
return reinterpret_cast<const unsigned char*>(data_.data());
}
size_t size() const override { return data_.size() * sizeof(base::char16); }
protected:
~RefCountedString16() override {}
private:
base::string16 data_;
};
void WriteFileDescriptor(base::ScopedFD fd,
scoped_refptr<base::RefCountedMemory> memory) {
if (!base::WriteFileDescriptor(fd.get(),
reinterpret_cast<const char*>(memory->front()),
memory->size()))
DLOG(ERROR) << "Failed to write drop data";
}
// Gets a comma-separated list of urls extracted from |data|->file.
bool GetUrlListFromDataFile(FileHelper* file_helper,
const ui::OSExchangeData& data,
base::string16* url_list_string) {
if (!data.HasFile())
return false;
std::vector<ui::FileInfo> files;
if (data.GetFilenames(&files)) {
for (const auto& info : files) {
GURL url;
// TODO(niwa): Need to fill the correct app_id.
if (file_helper->GetUrlFromPath(/* app_id */ "", info.path, &url)) {
if (!url_list_string->empty())
*url_list_string += base::UTF8ToUTF16(kUriListSeparator);
*url_list_string += base::UTF8ToUTF16(url.spec());
}
}
}
return !url_list_string->empty();
}
ui::Clipboard::FormatType GetClipboardFormatType() {
static const char kFormatString[] = "chromium/x-file-system-files";
CR_DEFINE_STATIC_LOCAL(ui::Clipboard::FormatType, format_type,
(ui::Clipboard::GetFormatType(kFormatString)));
return format_type;
}
} // namespace
DataOffer::DataOffer(DataOfferDelegate* delegate)
: delegate_(delegate), weak_ptr_factory_(this) {}
DataOffer::~DataOffer() {
delegate_->OnDataOfferDestroying(this);
for (DataOfferObserver& observer : observers_) {
observer.OnDataOfferDestroying(this);
}
}
void DataOffer::AddObserver(DataOfferObserver* observer) {
observers_.AddObserver(observer);
}
void DataOffer::RemoveObserver(DataOfferObserver* observer) {
observers_.RemoveObserver(observer);
}
void DataOffer::Accept(const std::string& mime_type) {}
void DataOffer::Receive(const std::string& mime_type, base::ScopedFD fd) {
const auto data_it = data_.find(mime_type);
if (data_it == data_.end()) {
DLOG(ERROR) << "Unexpected mime type is requested";
return;
}
if (data_it->second) {
base::PostTaskWithTraits(
FROM_HERE, {base::MayBlock(), base::TaskPriority::USER_BLOCKING},
base::BindOnce(&WriteFileDescriptor, std::move(fd), data_it->second));
} else {
// Data bytes for this mime type are being processed currently.
pending_receive_requests_.push_back(
std::make_pair(mime_type, std::move(fd)));
}
}
void DataOffer::Finish() {}
void DataOffer::SetActions(const base::flat_set<DndAction>& dnd_actions,
DndAction preferred_action) {
dnd_action_ = preferred_action;
delegate_->OnAction(preferred_action);
}
void DataOffer::SetSourceActions(
const base::flat_set<DndAction>& source_actions) {
source_actions_ = source_actions;
delegate_->OnSourceActions(source_actions);
}
void DataOffer::SetDropData(FileHelper* file_helper,
const ui::OSExchangeData& data) {
DCHECK_EQ(0u, data_.size());
const std::string uri_list_mime_type = file_helper->GetMimeTypeForUriList();
base::string16 url_list_string;
if (GetUrlListFromDataFile(file_helper, data, &url_list_string)) {
data_.emplace(uri_list_mime_type,
RefCountedString16::TakeString(std::move(url_list_string)));
delegate_->OnOffer(uri_list_mime_type);
return;
}
base::Pickle pickle;
if (data.GetPickledData(GetClipboardFormatType(), &pickle) &&
file_helper->HasUrlsInPickle(pickle)) {
// Set nullptr as a temporary value for the mime type.
// The value will be overriden in the callback below.
data_.emplace(uri_list_mime_type, nullptr);
// TODO(niwa): Need to fill the correct app_id.
file_helper->GetUrlsFromPickle(
/* app_id */ "", pickle,
base::BindOnce(&DataOffer::OnPickledUrlsResolved,
weak_ptr_factory_.GetWeakPtr(), uri_list_mime_type));
delegate_->OnOffer(uri_list_mime_type);
return;
}
base::string16 string_content;
if (data.HasString() && data.GetString(&string_content)) {
const std::string text_mime_type =
std::string(ui::Clipboard::kMimeTypeText);
data_.emplace(text_mime_type,
RefCountedString16::TakeString(std::move(string_content)));
delegate_->OnOffer(text_mime_type);
return;
}
}
void DataOffer::SetClipboardData(FileHelper* file_helper,
const ui::Clipboard& data) {
DCHECK_EQ(0u, data_.size());
if (data.IsFormatAvailable(ui::Clipboard::GetPlainTextWFormatType(),
ui::CLIPBOARD_TYPE_COPY_PASTE)) {
base::string16 content;
data.ReadText(ui::CLIPBOARD_TYPE_COPY_PASTE, &content);
std::string utf8_content = base::UTF16ToUTF8(content);
scoped_refptr<base::RefCountedString> utf8_ref =
base::RefCountedString::TakeString(&utf8_content);
data_.emplace(std::string(kTextMimeTypeUtf8), utf8_ref);
data_.emplace(std::string(kUtf8String), utf8_ref);
delegate_->OnOffer(std::string(kTextMimeTypeUtf8));
delegate_->OnOffer(std::string(kUtf8String));
}
}
void DataOffer::OnPickledUrlsResolved(const std::string& mime_type,
const std::vector<GURL>& urls) {
const auto data_it = data_.find(mime_type);
DCHECK(data_it != data_.end());
DCHECK(!data_it->second); // nullptr should be set as a temporary value.
data_.erase(data_it);
base::string16 url_list_string;
for (const GURL& url : urls) {
if (!url.is_valid())
continue;
if (!url_list_string.empty())
url_list_string += base::UTF8ToUTF16(kUriListSeparator);
url_list_string += base::UTF8ToUTF16(url.spec());
}
const auto ref_counted_memory =
RefCountedString16::TakeString(std::move(url_list_string));
data_.emplace(mime_type, ref_counted_memory);
// Process pending receive requests for this mime type, if there are any.
auto it = pending_receive_requests_.begin();
while (it != pending_receive_requests_.end()) {
if (it->first == mime_type) {
base::PostTaskWithTraits(
FROM_HERE, {base::MayBlock(), base::TaskPriority::USER_BLOCKING},
base::BindOnce(&WriteFileDescriptor, std::move(it->second),
ref_counted_memory));
it = pending_receive_requests_.erase(it);
} else {
++it;
}
}
}
} // namespace exo
|
