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1 // Copyright 2017 The Chromium Authors. All rights reserved. | |
2 // Use of this source code is governed by a BSD-style license that can be | |
3 // found in the LICENSE file. | |
4 | |
5 #ifndef CHROME_BROWSER_CHROMEOS_APP_MODE_KIOSK_APP_ICON_LOADER_H_ | |
6 #define CHROME_BROWSER_CHROMEOS_APP_MODE_KIOSK_APP_ICON_LOADER_H_ | |
7 | |
8 #include "base/files/file_path.h" | |
9 #include "base/memory/ref_counted_memory.h" | |
10 #include "base/memory/weak_ptr.h" | |
11 #include "base/sequenced_task_runner.h" | |
12 #include "chrome/browser/image_decoder.h" | |
13 #include "ui/gfx/image/image_skia.h" | |
14 | |
15 namespace chromeos { | |
16 | |
17 // Loads locally stored icon data and decodes it. | |
18 class KioskAppIconLoader { | |
19 public: | |
20 enum LoadResult { | |
21 SUCCESS, | |
22 FAILED_TO_LOAD, | |
23 FAILED_TO_DECODE, | |
24 }; | |
25 | |
26 class Delegate { | |
27 public: | |
28 Delegate() = default; | |
29 | |
30 virtual void OnIconLoadSuccess(const gfx::ImageSkia& icon) = 0; | |
31 virtual void OnIconLoadFailure() = 0; | |
32 | |
33 protected: | |
34 virtual ~Delegate() = default; | |
35 | |
36 private: | |
37 DISALLOW_COPY_AND_ASSIGN(Delegate); | |
38 }; | |
39 | |
40 KioskAppIconLoader(const base::WeakPtr<Delegate>& client, | |
41 const base::FilePath& icon_path); | |
42 | |
43 void Start(); | |
44 | |
45 private: | |
46 friend class base::RefCountedThreadSafe<KioskAppIconLoader>; | |
47 | |
48 ~KioskAppIconLoader(); | |
49 | |
50 class IconImageRequest : public ImageDecoder::ImageRequest { | |
khmel
2017/03/27 22:56:34
nit: Move to cc file and use here only forward dec
Sergey Poromov
2017/03/28 15:25:55
Done. Thanks, missed the opportunity.
| |
51 public: | |
52 IconImageRequest( | |
53 const scoped_refptr<base::SequencedTaskRunner>& task_runner, | |
54 KioskAppIconLoader* icon_loader); | |
55 | |
56 void OnImageDecoded(const SkBitmap& decoded_image) override; | |
57 | |
58 void OnDecodeImageFailed() override; | |
59 | |
60 private: | |
61 ~IconImageRequest() override = default; | |
62 KioskAppIconLoader* icon_loader_; | |
63 }; | |
64 | |
65 // Loads the icon from locally stored |icon_path_| on the blocking pool | |
66 void LoadOnBlockingPool(); | |
67 void ReportResultOnBlockingPool(LoadResult result); | |
68 void NotifyClient(); | |
69 void ReportResultOnUIThread(); | |
70 | |
71 base::WeakPtr<Delegate> client_; | |
72 base::FilePath icon_path_; | |
73 | |
74 LoadResult load_result_; | |
75 scoped_refptr<base::SequencedTaskRunner> task_runner_; | |
76 | |
77 gfx::ImageSkia icon_; | |
78 scoped_refptr<base::RefCountedString> raw_icon_; | |
79 | |
80 DISALLOW_COPY_AND_ASSIGN(KioskAppIconLoader); | |
81 }; | |
82 | |
83 } // namespace chromeos | |
84 | |
85 #endif // CHROME_BROWSER_CHROMEOS_APP_MODE_KIOSK_APP_ICON_LOADER_H_ | |
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