content/public/browser/indexed_db_context.h

// 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 CONTENT_PUBLIC_BROWSER_INDEXED_DB_CONTEXT_H_
#define CONTENT_PUBLIC_BROWSER_INDEXED_DB_CONTEXT_H_

#include <stdint.h>

#include <string>
#include <vector>

#include "base/files/file_path.h"
#include "base/memory/ref_counted_delete_on_sequence.h"
#include "content/common/content_export.h"

namespace base {
class SequencedTaskRunner;
}

namespace url {
class Origin;
}

namespace content {

struct StorageUsageInfo;

// Represents the per-BrowserContext IndexedDB data.
// Call these methods only via the exposed TaskRunner.
// Refcounted because this class is used throughout the codebase on different
// threads.
class IndexedDBContext
    : public base::RefCountedDeleteOnSequence<IndexedDBContext> {
 public:
  // Only call the below methods by posting to this TaskRunner.
  virtual base::SequencedTaskRunner* TaskRunner() = 0;

  // Methods used in response to QuotaManager requests.
  virtual std::vector<StorageUsageInfo> GetAllOriginsInfo() = 0;

  // Deletes all indexed db files for the given origin.
  virtual void DeleteForOrigin(const url::Origin& origin) = 0;

  // Copies the indexed db files from this context to another. The
  // indexed db directory in the destination context needs to be empty.
  virtual void CopyOriginData(const url::Origin& origin,
                              IndexedDBContext* dest_context) = 0;

  // Get the file name of the local storage file for the given origin.
  virtual base::FilePath GetFilePathForTesting(const url::Origin& origin) = 0;

  // Forget the origins/sizes read from disk.
  virtual void ResetCachesForTesting() = 0;

  // Disables the exit-time deletion of session-only data.
  virtual void SetForceKeepSessionState() = 0;

 protected:
  friend class base::RefCountedDeleteOnSequence<IndexedDBContext>;
  friend class base::DeleteHelper<IndexedDBContext>;

  IndexedDBContext(scoped_refptr<base::SequencedTaskRunner> owning_task_runner)
      : base::RefCountedDeleteOnSequence<IndexedDBContext>(
            std::move(owning_task_runner)) {}

  virtual ~IndexedDBContext() {}
};

}  // namespace content

#endif  // CONTENT_PUBLIC_BROWSER_INDEXED_DB_CONTEXT_H_