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// Copyright (c) 2011 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_EXTENSIONS_EXTENSION_SPECIAL_STORAGE_POLICY_H_
#define CHROME_BROWSER_EXTENSIONS_EXTENSION_SPECIAL_STORAGE_POLICY_H_
#pragma once
#include <map>
#include <string>
#include "base/synchronization/lock.h"
#include "googleurl/src/gurl.h"
#include "webkit/quota/special_storage_policy.h"
class Extension;
// Special rights are granted to 'extensions' and 'applications'. The
// storage subsystems and the browsing data remover query this interface
// to determine which origins have these rights.
class ExtensionSpecialStoragePolicy : public quota::SpecialStoragePolicy {
public:
ExtensionSpecialStoragePolicy();
// SpecialStoragePolicy methods used by storage subsystems and the browsing
// data remover. These methods are safe to call on any thread.
virtual bool IsStorageProtected(const GURL& origin);
virtual bool IsStorageUnlimited(const GURL& origin);
virtual bool IsFileHandler(const std::string& extension_id);
// Methods used by the ExtensionService to populate this class.
void GrantRightsForExtension(const Extension* extension);
void RevokeRightsForExtension(const Extension* extension);
void RevokeRightsForAllExtensions();
protected:
virtual ~ExtensionSpecialStoragePolicy();
private:
class SpecialCollection {
public:
SpecialCollection();
~SpecialCollection();
bool Contains(const GURL& origin);
bool ContainsExtension(const std::string& extension_id);
void Add(const Extension* extension);
void Remove(const Extension* extension);
void Clear();
private:
typedef std::map<GURL, bool> CachedResults;
typedef std::map<std::string, scoped_refptr<const Extension> > Extensions;
Extensions extensions_;
CachedResults cached_results_;
};
base::Lock lock_; // Synchronize all access to the collections.
SpecialCollection protected_apps_;
SpecialCollection unlimited_extensions_;
SpecialCollection file_handler_extensions_;
};
#endif // CHROME_BROWSER_EXTENSIONS_EXTENSION_SPECIAL_STORAGE_POLICY_H_
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