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// 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 WEBKIT_QUOTA_QUOTA_CLIENT_H_
#define WEBKIT_QUOTA_QUOTA_CLIENT_H_
#include <list>
#include <set>
#include <string>
#include "base/callback.h"
#include "googleurl/src/gurl.h"
#include "webkit/quota/quota_types.h"
#include "webkit/storage/webkit_storage_export.h"
namespace quota {
// An abstract interface for quota manager clients.
// Each storage API must provide an implementation of this interface and
// register it to the quota manager.
// All the methods are assumed to be called on the IO thread in the browser.
class WEBKIT_STORAGE_EXPORT QuotaClient {
public:
typedef base::Callback<void(int64)> GetUsageCallback; // NOLINT
typedef base::Callback<void(const std::set<GURL>&, StorageType)>
GetOriginsCallback;
typedef base::Callback<void(QuotaStatusCode)> DeletionCallback;
virtual ~QuotaClient() {}
enum ID {
kUnknown = 1 << 0,
kFileSystem = 1 << 1,
kDatabase = 1 << 2,
kAppcache = 1 << 3,
kIndexedDatabase = 1 << 4,
kAllClientsMask = -1,
};
virtual ID id() const = 0;
// Called when the quota manager is destroyed.
virtual void OnQuotaManagerDestroyed() = 0;
// Called by the QuotaManager.
// Gets the amount of data stored in the storage specified by
// |origin_url| and |type|.
// Note it is safe to fire the callback after the QuotaClient is destructed.
virtual void GetOriginUsage(const GURL& origin_url,
StorageType type,
const GetUsageCallback& callback) = 0;
// Called by the QuotaManager.
// Returns a list of origins that has data in the |type| storage.
// Note it is safe to fire the callback after the QuotaClient is destructed.
virtual void GetOriginsForType(StorageType type,
const GetOriginsCallback& callback) = 0;
// Called by the QuotaManager.
// Returns a list of origins that match the |host|.
// Note it is safe to fire the callback after the QuotaClient is destructed.
virtual void GetOriginsForHost(StorageType type,
const std::string& host,
const GetOriginsCallback& callback) = 0;
// Called by the QuotaManager.
// Note it is safe to fire the callback after the QuotaClient is destructed.
virtual void DeleteOriginData(const GURL& origin,
StorageType type,
const DeletionCallback& callback) = 0;
};
// TODO(dmikurube): Replace it to std::vector for efficiency.
typedef std::list<QuotaClient*> QuotaClientList;
} // namespace quota
#endif // WEBKIT_QUOTA_QUOTA_CLIENT_H_
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