text: // Copyright (c) 2012 The Chromium Authors. All rights reserved.
  // Use of this source code is governed by a BSD-style license that can be
  // found in the LICENSE file.
  
  #ifndef STORAGE_BROWSER_FILE_SYSTEM_FILE_SYSTEM_QUOTA_CLIENT_H_
  #define STORAGE_BROWSER_FILE_SYSTEM_FILE_SYSTEM_QUOTA_CLIENT_H_
  
  #include <string>
  
  #include "base/component_export.h"
  #include "base/memory/ref_counted.h"
  #include "base/sequence_checker.h"
  #include "base/thread_annotations.h"
  #include "storage/browser/quota/quota_client.h"
  #include "storage/common/file_system/file_system_types.h"
  #include "third_party/blink/public/mojom/quota/quota_types.mojom.h"
  
  namespace base {
  class SequencedTaskRunner;
  }
  
  namespace url {
  class Origin;
  }
  
  namespace storage {
  
  class FileSystemContext;
  
  // All of the public methods of this class are called by the quota manager
  // (except for the constructor/destructor).
  class COMPONENT_EXPORT(STORAGE_BROWSER) FileSystemQuotaClient
      : public QuotaClient {
   public:
    explicit FileSystemQuotaClient(FileSystemContext* file_system_context);
  
    FileSystemQuotaClient(const FileSystemQuotaClient&) = delete;
    FileSystemQuotaClient& operator=(const FileSystemQuotaClient&) = delete;
  
    // QuotaClient methods.
    void GetOriginUsage(const url::Origin& origin,
                        blink::mojom::StorageType type,
                        GetOriginUsageCallback callback) override;
    void GetOriginsForType(blink::mojom::StorageType type,
                           GetOriginsForTypeCallback callback) override;
    void GetOriginsForHost(blink::mojom::StorageType type,
                           const std::string& host,
                           GetOriginsForHostCallback callback) override;
    void DeleteOriginData(const url::Origin& origin,
                          blink::mojom::StorageType type,
                          DeleteOriginDataCallback callback) override;
    void PerformStorageCleanup(blink::mojom::StorageType type,
                               PerformStorageCleanupCallback callback) override;
  
    // Converts FileSystemType |type| to/from the StorageType |storage_type| that
    // is used for the unified quota system.
    // (Basically this naively maps TEMPORARY storage type to TEMPORARY filesystem
    // type, PERSISTENT storage type to PERSISTENT filesystem type and vice
    // versa.)
    static FileSystemType QuotaStorageTypeToFileSystemType(
        blink::mojom::StorageType storage_type);
  
   private:
    ~FileSystemQuotaClient() override;
  
    base::SequencedTaskRunner* file_task_runner() const;
  
    SEQUENCE_CHECKER(sequence_checker_);
  
    const scoped_refptr<FileSystemContext> file_system_context_
        GUARDED_BY_CONTEXT(sequence_checker_);
  };
  
  }  // namespace storage
  
  #endif  // STORAGE_BROWSER_FILE_SYSTEM_FILE_SYSTEM_QUOTA_CLIENT_H_
  