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
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
|
// Copyright 2013 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 "chrome/browser/chromeos/extensions/wallpaper_api.h"
#include <string>
#include <utility>
#include <vector>
#include "ash/desktop_background/desktop_background_controller.h"
#include "base/files/file_util.h"
#include "base/lazy_instance.h"
#include "base/memory/ref_counted_memory.h"
#include "base/strings/stringprintf.h"
#include "base/threading/worker_pool.h"
#include "chrome/browser/browser_process.h"
#include "chrome/browser/chromeos/extensions/wallpaper_private_api.h"
#include "chrome/browser/chromeos/login/users/wallpaper/wallpaper_manager.h"
#include "chrome/browser/profiles/profile.h"
#include "chrome/common/chrome_paths.h"
#include "chrome/common/extensions/extension_constants.h"
#include "chrome/common/pref_names.h"
#include "components/prefs/pref_service.h"
#include "components/user_manager/user.h"
#include "components/user_manager/user_manager.h"
#include "components/wallpaper/wallpaper_layout.h"
#include "extensions/browser/event_router.h"
#include "net/base/load_flags.h"
#include "net/http/http_status_code.h"
#include "net/url_request/url_fetcher.h"
#include "net/url_request/url_fetcher_delegate.h"
#include "url/gurl.h"
using base::BinaryValue;
using content::BrowserThread;
typedef base::Callback<void(bool success, const std::string&)> FetchCallback;
namespace set_wallpaper = extensions::api::wallpaper::SetWallpaper;
namespace {
class WallpaperFetcher : public net::URLFetcherDelegate {
public:
WallpaperFetcher() {}
~WallpaperFetcher() override {}
void FetchWallpaper(const GURL& url, FetchCallback callback) {
CancelPreviousFetch();
callback_ = callback;
url_fetcher_ = net::URLFetcher::Create(url, net::URLFetcher::GET, this);
url_fetcher_->SetRequestContext(
g_browser_process->system_request_context());
url_fetcher_->SetLoadFlags(net::LOAD_DISABLE_CACHE);
url_fetcher_->Start();
}
private:
// URLFetcherDelegate overrides:
void OnURLFetchComplete(const net::URLFetcher* source) override {
DCHECK(url_fetcher_.get() == source);
bool success = source->GetStatus().is_success() &&
source->GetResponseCode() == net::HTTP_OK;
std::string response;
if (success) {
source->GetResponseAsString(&response);
} else {
response = base::StringPrintf(
"Downloading wallpaper %s failed. The response code is %d.",
source->GetOriginalURL().ExtractFileName().c_str(),
source->GetResponseCode());
}
url_fetcher_.reset();
callback_.Run(success, response);
callback_.Reset();
}
void CancelPreviousFetch() {
if (url_fetcher_.get()) {
callback_.Run(false, wallpaper_api_util::kCancelWallpaperMessage);
callback_.Reset();
url_fetcher_.reset();
}
}
scoped_ptr<net::URLFetcher> url_fetcher_;
FetchCallback callback_;
};
base::LazyInstance<WallpaperFetcher> g_wallpaper_fetcher =
LAZY_INSTANCE_INITIALIZER;
} // namespace
WallpaperSetWallpaperFunction::WallpaperSetWallpaperFunction() {
}
WallpaperSetWallpaperFunction::~WallpaperSetWallpaperFunction() {
}
bool WallpaperSetWallpaperFunction::RunAsync() {
DCHECK_CURRENTLY_ON(BrowserThread::UI);
params_ = set_wallpaper::Params::Create(*args_);
EXTENSION_FUNCTION_VALIDATE(params_);
// Gets account id and user wallpaper files id while at UI thread.
const user_manager::User* user =
user_manager::UserManager::Get()->GetLoggedInUser();
account_id_ = user->GetAccountId();
chromeos::WallpaperManager* wallpaper_manager =
chromeos::WallpaperManager::Get();
wallpaper_files_id_ = wallpaper_manager->GetFilesId(*user);
if (params_->details.data) {
StartDecode(*params_->details.data);
} else if (params_->details.url) {
GURL wallpaper_url(*params_->details.url);
if (wallpaper_url.is_valid()) {
g_wallpaper_fetcher.Get().FetchWallpaper(
wallpaper_url,
base::Bind(&WallpaperSetWallpaperFunction::OnWallpaperFetched, this));
} else {
SetError("URL is invalid.");
SendResponse(false);
}
} else {
SetError("Either url or data field is required.");
SendResponse(false);
}
return true;
}
void WallpaperSetWallpaperFunction::OnWallpaperDecoded(
const gfx::ImageSkia& image) {
chromeos::WallpaperManager* wallpaper_manager =
chromeos::WallpaperManager::Get();
base::FilePath thumbnail_path = wallpaper_manager->GetCustomWallpaperPath(
wallpaper::kThumbnailWallpaperSubDir, wallpaper_files_id_,
params_->details.filename);
sequence_token_ = BrowserThread::GetBlockingPool()->GetNamedSequenceToken(
wallpaper::kWallpaperSequenceTokenName);
scoped_refptr<base::SequencedTaskRunner> task_runner =
BrowserThread::GetBlockingPool()->
GetSequencedTaskRunnerWithShutdownBehavior(sequence_token_,
base::SequencedWorkerPool::BLOCK_SHUTDOWN);
wallpaper::WallpaperLayout layout = wallpaper_api_util::GetLayoutEnum(
extensions::api::wallpaper::ToString(params_->details.layout));
wallpaper_api_util::RecordCustomWallpaperLayout(layout);
bool update_wallpaper =
account_id_ ==
user_manager::UserManager::Get()->GetActiveUser()->GetAccountId();
wallpaper_manager->SetCustomWallpaper(
account_id_, wallpaper_files_id_, params_->details.filename, layout,
user_manager::User::CUSTOMIZED, image, update_wallpaper);
unsafe_wallpaper_decoder_ = NULL;
// Save current extenion name. It will be displayed in the component
// wallpaper picker app. If current extension is the component wallpaper
// picker, set an empty string.
Profile* profile = Profile::FromBrowserContext(browser_context());
if (extension()->id() == extension_misc::kWallpaperManagerId) {
profile->GetPrefs()->SetString(prefs::kCurrentWallpaperAppName,
std::string());
} else {
profile->GetPrefs()->SetString(prefs::kCurrentWallpaperAppName,
extension()->name());
}
if (!params_->details.thumbnail)
SendResponse(true);
// We need to generate thumbnail image anyway to make the current third party
// wallpaper syncable through different devices.
image.EnsureRepsForSupportedScales();
scoped_ptr<gfx::ImageSkia> deep_copy(image.DeepCopy());
// Generates thumbnail before call api function callback. We can then
// request thumbnail in the javascript callback.
task_runner->PostTask(
FROM_HERE,
base::Bind(&WallpaperSetWallpaperFunction::GenerateThumbnail, this,
thumbnail_path, base::Passed(std::move(deep_copy))));
}
void WallpaperSetWallpaperFunction::GenerateThumbnail(
const base::FilePath& thumbnail_path, scoped_ptr<gfx::ImageSkia> image) {
DCHECK(BrowserThread::GetBlockingPool()->IsRunningSequenceOnCurrentThread(
sequence_token_));
if (!base::PathExists(thumbnail_path.DirName()))
base::CreateDirectory(thumbnail_path.DirName());
scoped_refptr<base::RefCountedBytes> original_data;
scoped_refptr<base::RefCountedBytes> thumbnail_data;
chromeos::WallpaperManager::Get()->ResizeImage(
*image, wallpaper::WALLPAPER_LAYOUT_STRETCH, image->width(),
image->height(), &original_data, NULL);
chromeos::WallpaperManager::Get()->ResizeImage(
*image, wallpaper::WALLPAPER_LAYOUT_STRETCH,
wallpaper::kWallpaperThumbnailWidth, wallpaper::kWallpaperThumbnailHeight,
&thumbnail_data, NULL);
BrowserThread::PostTask(
BrowserThread::UI, FROM_HERE,
base::Bind(&WallpaperSetWallpaperFunction::ThumbnailGenerated, this,
base::RetainedRef(original_data),
base::RetainedRef(thumbnail_data)));
}
void WallpaperSetWallpaperFunction::ThumbnailGenerated(
base::RefCountedBytes* original_data,
base::RefCountedBytes* thumbnail_data) {
BinaryValue* original_result = BinaryValue::CreateWithCopiedBuffer(
reinterpret_cast<const char*>(original_data->front()),
original_data->size());
BinaryValue* thumbnail_result = BinaryValue::CreateWithCopiedBuffer(
reinterpret_cast<const char*>(thumbnail_data->front()),
thumbnail_data->size());
if (params_->details.thumbnail) {
SetResult(thumbnail_result);
SendResponse(true);
}
// Inform the native Wallpaper Picker Application that the current wallpaper
// has been modified by a third party application.
if (extension()->id() != extension_misc::kWallpaperManagerId) {
Profile* profile = Profile::FromBrowserContext(browser_context());
extensions::EventRouter* event_router =
extensions::EventRouter::Get(profile);
scoped_ptr<base::ListValue> event_args(new base::ListValue());
event_args->Append(original_result);
event_args->Append(thumbnail_result);
event_args->Append(new base::StringValue(
extensions::api::wallpaper::ToString(params_->details.layout)));
event_args->Append(new base::StringValue(extension()->name()));
scoped_ptr<extensions::Event> event(new extensions::Event(
extensions::events::WALLPAPER_PRIVATE_ON_WALLPAPER_CHANGED_BY_3RD_PARTY,
extensions::api::wallpaper_private::OnWallpaperChangedBy3rdParty::
kEventName,
std::move(event_args)));
event_router->DispatchEventToExtension(extension_misc::kWallpaperManagerId,
std::move(event));
}
}
void WallpaperSetWallpaperFunction::OnWallpaperFetched(
bool success,
const std::string& response) {
if (success) {
params_->details.data.reset(
new std::vector<char>(response.begin(), response.end()));
StartDecode(*params_->details.data);
} else {
SetError(response);
SendResponse(false);
}
}
|
