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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/callback_forward.h" | |
9 #include "base/memory/ref_counted_memory.h" | |
10 #include "base/memory/weak_ptr.h" | |
11 #include "base/optional.h" | |
12 #include "base/sequenced_task_runner.h" | |
13 #include "ui/gfx/image/image_skia.h" | |
14 | |
15 namespace base { | |
16 class FilePath; | |
17 } | |
18 | |
19 namespace chromeos { | |
20 | |
21 // Loads locally stored icon data and decodes it. | |
22 class KioskAppIconLoader { | |
23 public: | |
24 enum LoadResult { | |
25 SUCCESS, | |
26 FAILED_TO_LOAD, | |
27 FAILED_TO_DECODE, | |
28 }; | |
29 | |
30 class Delegate { | |
31 public: | |
32 virtual void OnIconLoadSuccess(const gfx::ImageSkia& icon) = 0; | |
33 virtual void OnIconLoadFailure() = 0; | |
34 | |
35 protected: | |
36 virtual ~Delegate() = default; | |
37 }; | |
38 | |
39 using ResultCallback = | |
40 base::Callback<void(base::Optional<gfx::ImageSkia> result)>; | |
41 | |
42 explicit KioskAppIconLoader(Delegate* delegate); | |
43 | |
44 ~KioskAppIconLoader(); | |
45 | |
46 void Start(const base::FilePath& icon_path); | |
47 | |
48 private: | |
49 void OnImageDecodingFinished(base::Optional<gfx::ImageSkia> result); | |
50 | |
51 // Delegate always lives longer than this class as it's owned by delegate. | |
52 Delegate* const delegate_; | |
53 | |
54 scoped_refptr<base::SequencedTaskRunner> task_runner_; | |
55 | |
56 gfx::ImageSkia icon_; | |
57 | |
58 base::WeakPtrFactory<KioskAppIconLoader> weak_factory_; | |
59 | |
60 DISALLOW_COPY_AND_ASSIGN(KioskAppIconLoader); | |
61 }; | |
62 | |
63 } // namespace chromeos | |
64 | |
65 #endif // CHROME_BROWSER_CHROMEOS_APP_MODE_KIOSK_APP_ICON_LOADER_H_ | |
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