Index: chrome/browser/chromeos/app_mode/kiosk_app_icon_loader.cc |
diff --git a/chrome/browser/chromeos/app_mode/kiosk_app_icon_loader.cc b/chrome/browser/chromeos/app_mode/kiosk_app_icon_loader.cc |
new file mode 100644 |
index 0000000000000000000000000000000000000000..777aca7534abd3aa40abb9bab82c1c36bf5556ae |
--- /dev/null |
+++ b/chrome/browser/chromeos/app_mode/kiosk_app_icon_loader.cc |
@@ -0,0 +1,93 @@ |
+// 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 "chrome/browser/chromeos/app_mode/kiosk_app_icon_loader.h" |
+ |
+#include <vector> |
+ |
+#include "base/bind.h" |
+#include "base/files/file_util.h" |
+#include "base/threading/sequenced_worker_pool.h" |
+#include "content/public/browser/browser_thread.h" |
+ |
+using content::BrowserThread; |
+ |
+namespace chromeos { |
+ |
+KioskAppIconLoader::IconImageRequest::IconImageRequest( |
+ const scoped_refptr<base::SequencedTaskRunner>& task_runner, |
+ KioskAppIconLoader* icon_loader) |
+ : ImageRequest(task_runner), icon_loader_(icon_loader) {} |
+ |
+void KioskAppIconLoader::IconImageRequest::OnImageDecoded( |
+ const SkBitmap& decoded_image) { |
+ icon_loader_->icon_ = gfx::ImageSkia::CreateFrom1xBitmap(decoded_image); |
+ icon_loader_->icon_.MakeThreadSafe(); |
+ icon_loader_->ReportResultOnBlockingPool(SUCCESS); |
+ delete this; |
+} |
+ |
+void KioskAppIconLoader::IconImageRequest::OnDecodeImageFailed() { |
+ icon_loader_->ReportResultOnBlockingPool(FAILED_TO_DECODE); |
+ delete this; |
+} |
+ |
+KioskAppIconLoader::KioskAppIconLoader(const base::WeakPtr<Delegate>& client, |
+ const base::FilePath& icon_path) |
+ : client_(client), icon_path_(icon_path), load_result_(SUCCESS) {} |
+ |
+KioskAppIconLoader::~KioskAppIconLoader() = default; |
+ |
+void KioskAppIconLoader::Start() { |
+ base::SequencedWorkerPool* pool = BrowserThread::GetBlockingPool(); |
+ base::SequencedWorkerPool::SequenceToken token = pool->GetSequenceToken(); |
+ task_runner_ = pool->GetSequencedTaskRunnerWithShutdownBehavior( |
+ token, base::SequencedWorkerPool::SKIP_ON_SHUTDOWN); |
+ task_runner_->PostTask(FROM_HERE, |
+ base::Bind(&KioskAppIconLoader::LoadOnBlockingPool, |
+ base::Unretained(this))); |
khmel
2017/03/27 22:56:34
We might need weak pointer binding instead of Unre
Sergey Poromov
2017/03/28 15:25:55
I just refactored to extract this class from Kiosk
xiyuan
2017/03/28 16:50:09
The reading is correct.
IconLoader manages its ow
|
+} |
+ |
+void KioskAppIconLoader::LoadOnBlockingPool() { |
+ DCHECK(task_runner_->RunsTasksOnCurrentThread()); |
+ |
+ std::string data; |
+ if (!base::ReadFileToString(base::FilePath(icon_path_), &data)) { |
+ ReportResultOnBlockingPool(FAILED_TO_LOAD); |
+ return; |
+ } |
+ raw_icon_ = base::RefCountedString::TakeString(&data); |
+ |
+ IconImageRequest* image_request = new IconImageRequest(task_runner_, this); |
+ ImageDecoder::Start(image_request, raw_icon_->data()); |
+} |
+ |
+void KioskAppIconLoader::ReportResultOnBlockingPool(LoadResult result) { |
+ DCHECK(task_runner_->RunsTasksOnCurrentThread()); |
+ |
+ load_result_ = result; |
+ BrowserThread::PostTask( |
+ BrowserThread::UI, FROM_HERE, |
+ base::Bind(&KioskAppIconLoader::ReportResultOnUIThread, |
+ base::Unretained(this))); |
khmel
2017/03/27 22:56:33
Use weak pointer instead of Unretained?
|
+} |
+ |
+void KioskAppIconLoader::NotifyClient() { |
+ if (!client_) |
+ return; |
+ |
+ if (load_result_ == SUCCESS) |
khmel
2017/03/27 22:56:32
You set and read load_results_ from different thre
|
+ client_->OnIconLoadSuccess(icon_); |
+ else |
+ client_->OnIconLoadFailure(); |
+} |
+ |
+void KioskAppIconLoader::ReportResultOnUIThread() { |
+ DCHECK_CURRENTLY_ON(BrowserThread::UI); |
+ |
+ NotifyClient(); |
+ delete this; |
+} |
+ |
+} // namespace chromeos |