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| 1 // Copyright 2016 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_UI_LOW_DISK_NOTIFICATION_H_ |
| 6 #define CHROME_BROWSER_CHROMEOS_UI_LOW_DISK_NOTIFICATION_H_ |
| 7 |
| 8 #include <stdint.h> |
| 9 |
| 10 #include "base/macros.h" |
| 11 #include "base/memory/weak_ptr.h" |
| 12 #include "base/threading/thread_checker.h" |
| 13 #include "base/time/time.h" |
| 14 |
| 15 namespace message_center { |
| 16 class Notification; |
| 17 class MessageCenter; |
| 18 } |
| 19 |
| 20 namespace chromeos { |
| 21 |
| 22 // LowDiskNotification manages the notification informing the user of low disk |
| 23 // space. It is responsible for both creating the notifications in message |
| 24 // center as well as throttling notifications shown to the user. |
| 25 // This class should be created after DBus has been initialized and destroyed |
| 26 // before DBus has been shutdown. |
| 27 // This class must be instantiated on the UI thread. |
| 28 class LowDiskNotification { |
| 29 public: |
| 30 // Registers this class as the CryptohomeClient LowDiskSpaceHandler. |
| 31 LowDiskNotification(); |
| 32 |
| 33 // Resets CryptohomeClient LowDiskSpaceHandler. |
| 34 ~LowDiskNotification(); |
| 35 |
| 36 // Called when the device is running low on disk space. This is responsible |
| 37 // for deciding whether a notification should be shown or not and showing it |
| 38 // if appropriate. This must be called from the thread that instantiated this |
| 39 // object. |
| 40 void OnLowDiskSpace(uint64_t free_disk_bytes); |
| 41 |
| 42 private: |
| 43 friend class LowDiskNotificationTest; |
| 44 |
| 45 enum Severity { NONE = -1, MEDIUM = 0, HIGH = 1 }; |
| 46 |
| 47 // Creates a notification for the specified severity. If the severity does |
| 48 // not match a known value MEDIUM is used by default. |
| 49 std::unique_ptr<message_center::Notification> CreateNotification( |
| 50 Severity severity); |
| 51 |
| 52 // Gets the severity of the low disk status based on the amount of free space |
| 53 // left on the disk. |
| 54 Severity GetSeverity(uint64_t free_disk_bytes); |
| 55 |
| 56 // Sets the MessageCenter instance to use. Should only be used in tests. |
| 57 void SetMessageCenterForTest(message_center::MessageCenter* message_center); |
| 58 |
| 59 // Sets the minimum time to wait between notifications of the same severity. |
| 60 // Should only be used in tests. |
| 61 void SetNotificationIntervalForTest(base::TimeDelta interval); |
| 62 |
| 63 base::Time last_notification_time_; |
| 64 Severity last_notification_severity_; |
| 65 message_center::MessageCenter* message_center_; |
| 66 base::TimeDelta notification_interval_; |
| 67 base::ThreadChecker thread_checker_; |
| 68 base::WeakPtrFactory<LowDiskNotification> weak_ptr_factory_; |
| 69 |
| 70 DISALLOW_COPY_AND_ASSIGN(LowDiskNotification); |
| 71 }; |
| 72 |
| 73 } // namespace chromeos |
| 74 |
| 75 #endif // CHROME_BROWSER_CHROMEOS_UI_LOW_DISK_NOTIFICATION_H_ |
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