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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_BROWSER_APPCACHE_CHROME_APPCACHE_SERVICE_H_
#define CONTENT_BROWSER_APPCACHE_CHROME_APPCACHE_SERVICE_H_
#pragma once
#include "base/compiler_specific.h"
#include "base/memory/ref_counted.h"
#include "base/message_loop_helpers.h"
#include "content/common/content_export.h"
#include "content/public/browser/browser_thread.h"
#include "webkit/appcache/appcache_policy.h"
#include "webkit/appcache/appcache_service.h"
#include "webkit/quota/special_storage_policy.h"
class FilePath;
namespace content {
class ResourceContext;
}
struct ChromeAppCacheServiceDeleter;
// An AppCacheService subclass used by the chrome. There is an instance
// associated with each BrowserContext. This derivation adds refcounting
// semantics since a browser context has multiple URLRequestContexts which refer
// to the same object, and those URLRequestContexts are refcounted independently
// of the owning browser context.
//
// All methods, except the ctor, are expected to be called on
// the IO thread (unless specifically called out in doc comments).
//
// TODO(dpranke): Fix dependencies on AppCacheService so that we don't have
// to worry about clients calling AppCacheService methods.
class CONTENT_EXPORT ChromeAppCacheService
: public base::RefCountedThreadSafe<ChromeAppCacheService,
ChromeAppCacheServiceDeleter>,
NON_EXPORTED_BASE(public appcache::AppCacheService),
NON_EXPORTED_BASE(public appcache::AppCachePolicy) {
public:
explicit ChromeAppCacheService(quota::QuotaManagerProxy* proxy);
void InitializeOnIOThread(
const FilePath& cache_path, // may be empty to use in-memory structures
content::ResourceContext* resource_context,
scoped_refptr<quota::SpecialStoragePolicy> special_storage_policy);
// AppCachePolicy overrides
virtual bool CanLoadAppCache(const GURL& manifest_url,
const GURL& first_party) OVERRIDE;
virtual bool CanCreateAppCache(const GURL& manifest_url,
const GURL& first_party) OVERRIDE;
protected:
virtual ~ChromeAppCacheService();
private:
friend class base::DeleteHelper<ChromeAppCacheService>;
friend class base::RefCountedThreadSafe<ChromeAppCacheService,
ChromeAppCacheServiceDeleter>;
friend struct ChromeAppCacheServiceDeleter;
void DeleteOnCorrectThread() const;
content::ResourceContext* resource_context_;
FilePath cache_path_;
DISALLOW_COPY_AND_ASSIGN(ChromeAppCacheService);
};
struct ChromeAppCacheServiceDeleter {
static void Destruct(const ChromeAppCacheService* service) {
service->DeleteOnCorrectThread();
}
};
#endif // CONTENT_BROWSER_APPCACHE_CHROME_APPCACHE_SERVICE_H_
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