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| 1 // Copyright 2013 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_EXTENSIONS_API_SYSTEM_STORAGE_STORAGE_INFO_PROVIDER_H_ | |
| 6 #define CHROME_BROWSER_EXTENSIONS_API_SYSTEM_STORAGE_STORAGE_INFO_PROVIDER_H_ | |
| 7 | |
| 8 #include <set> | |
| 9 | |
| 10 #include "base/lazy_instance.h" | |
| 11 #include "base/memory/ref_counted.h" | |
| 12 #include "base/observer_list_threadsafe.h" | |
| 13 #include "base/timer/timer.h" | |
| 14 #include "chrome/browser/extensions/api/system_info/system_info_provider.h" | |
| 15 #include "chrome/common/extensions/api/system_storage.h" | |
| 16 | |
| 17 namespace storage_monitor { | |
| 18 class StorageInfo; | |
| 19 } | |
| 20 | |
| 21 namespace extensions { | |
| 22 | |
| 23 namespace systeminfo { | |
| 24 | |
| 25 // Build StorageUnitInfo struct from StorageInfo instance. The |unit| | |
| 26 // parameter is the output value. | |
| 27 void BuildStorageUnitInfo(const storage_monitor::StorageInfo& info, | |
| 28 api::system_storage::StorageUnitInfo* unit); | |
| 29 | |
| 30 } // namespace systeminfo | |
| 31 | |
| 32 typedef std::vector<linked_ptr< | |
| 33 api::system_storage::StorageUnitInfo> > | |
| 34 StorageUnitInfoList; | |
| 35 | |
| 36 class StorageInfoProvider : public SystemInfoProvider { | |
| 37 public: | |
| 38 typedef base::Callback<void(const std::string&, double)> | |
| 39 GetStorageFreeSpaceCallback; | |
| 40 | |
| 41 // Get the single shared instance of StorageInfoProvider. | |
| 42 static StorageInfoProvider* Get(); | |
| 43 | |
| 44 // SystemInfoProvider implementations | |
| 45 virtual void PrepareQueryOnUIThread() OVERRIDE; | |
| 46 virtual void InitializeProvider(const base::Closure& do_query_info_callback) | |
| 47 OVERRIDE; | |
| 48 | |
| 49 virtual double GetStorageFreeSpaceFromTransientIdOnFileThread( | |
| 50 const std::string& transient_id); | |
| 51 | |
| 52 const StorageUnitInfoList& storage_unit_info_list() const; | |
| 53 | |
| 54 static void InitializeForTesting(scoped_refptr<StorageInfoProvider> provider); | |
| 55 | |
| 56 protected: | |
| 57 StorageInfoProvider(); | |
| 58 | |
| 59 virtual ~StorageInfoProvider(); | |
| 60 | |
| 61 // Put all available storages' information into |info_|. | |
| 62 void GetAllStoragesIntoInfoList(); | |
| 63 | |
| 64 // The last information filled up by QueryInfo and is accessed on multiple | |
| 65 // threads, but the whole class is being guarded by SystemInfoProvider base | |
| 66 // class. | |
| 67 // | |
| 68 // |info_| is accessed on the UI thread while |is_waiting_for_completion_| is | |
| 69 // false and on the sequenced worker pool while |is_waiting_for_completion_| | |
| 70 // is true. | |
| 71 StorageUnitInfoList info_; | |
| 72 | |
| 73 private: | |
| 74 // SystemInfoProvider implementations. | |
| 75 // Override to query the available capacity of all known storage devices on | |
| 76 // the blocking pool, including fixed and removable devices. | |
| 77 virtual bool QueryInfo() OVERRIDE; | |
| 78 | |
| 79 static base::LazyInstance<scoped_refptr<StorageInfoProvider> > provider_; | |
| 80 | |
| 81 DISALLOW_COPY_AND_ASSIGN(StorageInfoProvider); | |
| 82 }; | |
| 83 | |
| 84 } // namespace extensions | |
| 85 | |
| 86 #endif // CHROME_BROWSER_EXTENSIONS_API_SYSTEM_STORAGE_STORAGE_INFO_PROVIDER_H_ | |
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Chromium Code Reviews
Issue 389633002:
Move system.* family of APIs to extensions/ (Closed)
Base URL: https://chromium.googlesource.com/chromium/src.git@master