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// Copyright (c) 2010 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 CHROME_BROWSER_IN_PROCESS_WEBKIT_DOM_STORAGE_AREA_H_
#define CHROME_BROWSER_IN_PROCESS_WEBKIT_DOM_STORAGE_AREA_H_
#pragma once
#include "base/hash_tables.h"
#include "base/nullable_string16.h"
#include "base/ref_counted.h"
#include "base/scoped_ptr.h"
#include "base/string16.h"
#include "chrome/common/dom_storage_common.h"
#include "googleurl/src/gurl.h"
#include "third_party/WebKit/WebKit/chromium/public/WebStorageArea.h"
class DOMStorageDispatcherHost;
class DOMStorageNamespace;
class HostContentSettingsMap;
// Only use on the WebKit thread. DOMStorageNamespace manages our registration
// with DOMStorageContext.
class DOMStorageArea {
public:
DOMStorageArea(const string16& origin,
int64 id,
DOMStorageNamespace* owner,
HostContentSettingsMap* host_content_settings_map);
~DOMStorageArea();
unsigned Length();
NullableString16 Key(unsigned index);
NullableString16 GetItem(const string16& key);
// The DOMStorageDispatcherHost parameter is required in case we get a
// CONTENT_SETTING_ASK response from the HostContentettingsMap. If we do,
// we'll need to let the renderer know that it'll need to run a nested message
// loop.
NullableString16 SetItem(
const string16& key, const string16& value,
WebKit::WebStorageArea::Result* result,
DOMStorageDispatcherHost* sender);
NullableString16 RemoveItem(const string16& key);
bool Clear();
void PurgeMemory();
int64 id() const { return id_; }
DOMStorageNamespace* owner() const { return owner_; }
private:
// Creates the underlying WebStorageArea on demand.
void CreateWebStorageAreaIfNecessary();
// Used to see if setItem has permission to do its thing.
bool CheckContentSetting(const string16& key, const string16& value,
DOMStorageDispatcherHost* sender);
// The origin this storage area represents.
string16 origin_;
GURL origin_url_;
// The storage area we wrap.
scoped_ptr<WebKit::WebStorageArea> storage_area_;
// Our storage area id. Unique to our parent WebKitContext.
int64 id_;
// The DOMStorageNamespace that owns us.
DOMStorageNamespace* owner_;
scoped_refptr<HostContentSettingsMap> host_content_settings_map_;
DISALLOW_IMPLICIT_CONSTRUCTORS(DOMStorageArea);
};
#if defined(COMPILER_GCC)
namespace __gnu_cxx {
template<>
struct hash<DOMStorageArea*> {
std::size_t operator()(DOMStorageArea* const& p) const {
return reinterpret_cast<std::size_t>(p);
}
};
} // namespace __gnu_cxx
#endif
#endif // CHROME_BROWSER_IN_PROCESS_WEBKIT_DOM_STORAGE_AREA_H_
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