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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_APPCACHE_HELPER_H_
#define CHROME_BROWSER_BROWSING_DATA_APPCACHE_HELPER_H_
#pragma once
#include "base/callback.h"
#include "base/memory/scoped_ptr.h"
#include "net/base/completion_callback.h"
#include "googleurl/src/gurl.h"
#include "webkit/appcache/appcache_service.h"
class Profile;
namespace content {
class ResourceContext;
}
// This class fetches appcache information on behalf of a caller
// on the UI thread.
class BrowsingDataAppCacheHelper
: public base::RefCountedThreadSafe<BrowsingDataAppCacheHelper> {
public:
explicit BrowsingDataAppCacheHelper(Profile* profile);
virtual void StartFetching(const base::Closure& completion_callback);
virtual void DeleteAppCacheGroup(const GURL& manifest_url);
appcache::AppCacheInfoCollection* info_collection() const {
DCHECK(!is_fetching_);
return info_collection_;
}
protected:
friend class base::RefCountedThreadSafe<BrowsingDataAppCacheHelper>;
virtual ~BrowsingDataAppCacheHelper();
base::Closure completion_callback_;
scoped_refptr<appcache::AppCacheInfoCollection> info_collection_;
private:
void OnFetchComplete(int rv);
bool is_fetching_;
content::ResourceContext* resource_context_;
net::CancelableCompletionCallback appcache_info_callback_;
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(Profile* profile);
// Return a copy of the appcache helper. Only one consumer can use the
// StartFetching method at a time, so we need to create a copy of the helper
// every time we instantiate a cookies tree model for it.
CannedBrowsingDataAppCacheHelper* Clone();
// 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;
// BrowsingDataAppCacheHelper methods.
virtual void StartFetching(const base::Closure& completion_callback) OVERRIDE;
private:
virtual ~CannedBrowsingDataAppCacheHelper();
Profile* profile_;
DISALLOW_COPY_AND_ASSIGN(CannedBrowsingDataAppCacheHelper);
};
#endif // CHROME_BROWSER_BROWSING_DATA_APPCACHE_HELPER_H_
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