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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 CONTENT_COMMON_INDEXED_DB_INDEXED_DB_KEY_H_
#define CONTENT_COMMON_INDEXED_DB_INDEXED_DB_KEY_H_
#include <vector>
#include "base/basictypes.h"
#include "base/memory/scoped_vector.h"
#include "base/string16.h"
#include "content/common/content_export.h"
#include "third_party/WebKit/Source/Platform/chromium/public/WebIDBKey.h"
namespace content {
class CONTENT_EXPORT IndexedDBKey {
public:
typedef std::vector<IndexedDBKey> KeyArray;
IndexedDBKey(); // Defaults to WebKit::WebIDBKey::InvalidType.
IndexedDBKey(WebKit::WebIDBKey::Type); // must be Null or Invalid
explicit IndexedDBKey(const KeyArray& array);
explicit IndexedDBKey(const string16& str);
IndexedDBKey(double number,
WebKit::WebIDBKey::Type type); // must be date or number
explicit IndexedDBKey(const WebKit::WebIDBKey& key);
~IndexedDBKey();
bool IsValid() const;
int Compare(const IndexedDBKey& other) const;
bool IsLessThan(const IndexedDBKey& other) const;
bool IsEqual(const IndexedDBKey& other) const;
WebKit::WebIDBKey::Type type() const { return type_; }
const std::vector<IndexedDBKey>& array() const { return array_; }
const string16& string() const { return string_; }
double date() const { return date_; }
double number() const { return number_; }
operator WebKit::WebIDBKey() const;
size_t size_estimate() const { return size_estimate_; }
private:
WebKit::WebIDBKey::Type type_;
std::vector<IndexedDBKey> array_;
string16 string_;
double date_;
double number_;
size_t size_estimate_;
// Very rough estimate of minimum key size overhead.
enum {
kOverheadSize = 16
};
};
} // namespace content
#endif // CONTENT_COMMON_INDEXED_DB_INDEXED_DB_KEY_H_
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