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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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