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/*
* Copyright (C) 2008 Apple Inc. All Rights Reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY APPLE INC. ``AS IS'' AND ANY
* EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL APPLE INC. OR
* CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
* EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
* PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
* PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY
* OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
#ifndef StorageMap_h
#define StorageMap_h
#if ENABLE(DOM_STORAGE)
#include "PlatformString.h"
#include "StringHash.h"
#include <wtf/HashMap.h>
#include <wtf/PassRefPtr.h>
#include <wtf/RefCounted.h>
namespace WebCore {
class StorageMap : public RefCounted<StorageMap> {
public:
// Quota size mesured in bytes.
static PassRefPtr<StorageMap> create(unsigned quotaSize);
unsigned length() const;
String key(unsigned index);
String getItem(const String&) const;
PassRefPtr<StorageMap> setItem(const String& key, const String& value, String& oldValue, bool& quota_exception);
PassRefPtr<StorageMap> removeItem(const String&, String& oldValue);
bool contains(const String& key) const;
void importItem(const String& key, const String& value);
unsigned quota() const { return m_quotaSize; }
static const unsigned noQuota = UINT_MAX;
private:
StorageMap(unsigned quota);
PassRefPtr<StorageMap> copy();
void invalidateIterator();
void setIteratorToIndex(unsigned);
HashMap<String, String> m_map;
HashMap<String, String>::iterator m_iterator;
unsigned m_iteratorIndex;
unsigned m_quotaSize; // Measured in bytes.
unsigned m_currentLength; // Measured in UChars.
};
} // namespace WebCore
#endif // ENABLE(DOM_STORAGE)
#endif // StorageMap_h
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