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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 CHROME_BROWSER_BROWSING_DATA_BROWSING_DATA_APPCACHE_HELPER_H_
#define CHROME_BROWSER_BROWSING_DATA_BROWSING_DATA_APPCACHE_HELPER_H_
#include <map>
#include "base/callback.h"
#include "base/memory/ref_counted.h"
#include "content/public/browser/appcache_service.h"
#include "url/gurl.h"
namespace content {
class BrowserContext;
}
// This class fetches appcache information on behalf of a caller
// on the UI thread.
class BrowsingDataAppCacheHelper
: public base::RefCountedThreadSafe<BrowsingDataAppCacheHelper> {
public:
typedef std::map<GURL, content::AppCacheInfoVector> OriginAppCacheInfoMap;
explicit BrowsingDataAppCacheHelper(content::BrowserContext* browser_context);
virtual void StartFetching(const base::Closure& completion_callback);
virtual void DeleteAppCacheGroup(const GURL& manifest_url);
content::AppCacheInfoCollection* info_collection() const {
DCHECK(!is_fetching_);
return info_collection_.get();
}
protected:
friend class base::RefCountedThreadSafe<BrowsingDataAppCacheHelper>;
virtual ~BrowsingDataAppCacheHelper();
base::Closure completion_callback_;
scoped_refptr<content::AppCacheInfoCollection> info_collection_;
private:
void OnFetchComplete(int rv);
bool is_fetching_;
content::AppCacheService* appcache_service_;
DISALLOW_COPY_AND_ASSIGN(BrowsingDataAppCacheHelper);
};
// This class is a thin wrapper around BrowsingDataAppCacheHelper that does not
// fetch its information from the appcache service, but gets them passed as
// a parameter during construction.
class CannedBrowsingDataAppCacheHelper : public BrowsingDataAppCacheHelper {
public:
explicit CannedBrowsingDataAppCacheHelper(
content::BrowserContext* browser_context);
// Add an appcache to the set of canned caches that is returned by this
// helper.
void AddAppCache(const GURL& manifest_url);
// Clears the list of canned caches.
void Reset();
// True if no appcaches are currently stored.
bool empty() const;
// Returns the number of app cache resources.
size_t GetAppCacheCount() const;
// Returns a current map with the |AppCacheInfoVector|s per origin.
const OriginAppCacheInfoMap& GetOriginAppCacheInfoMap() const;
// BrowsingDataAppCacheHelper methods.
void StartFetching(const base::Closure& completion_callback) override;
void DeleteAppCacheGroup(const GURL& manifest_url) override;
private:
~CannedBrowsingDataAppCacheHelper() override;
DISALLOW_COPY_AND_ASSIGN(CannedBrowsingDataAppCacheHelper);
};
#endif // CHROME_BROWSER_BROWSING_DATA_BROWSING_DATA_APPCACHE_HELPER_H_
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