1 // Copyright (c) 2011 The Chromium Authors. All rights reserved. 2 // Use of this source code is governed by a BSD-style license that can be 3 // found in the LICENSE file. 4 5 #ifndef CHROME_BROWSER_BROWSING_DATA_APPCACHE_HELPER_H_ 6 #define CHROME_BROWSER_BROWSING_DATA_APPCACHE_HELPER_H_ 7 #pragma once 8 9 #include "base/memory/scoped_ptr.h" 10 #include "base/task.h" 11 #include "content/browser/appcache/chrome_appcache_service.h" 12 #include "googleurl/src/gurl.h" 13 #include "net/url_request/url_request_context_getter.h" 14 15 class Profile; 16 17 // This class fetches appcache information on behalf of a caller 18 // on the UI thread. 19 class BrowsingDataAppCacheHelper 20 : public base::RefCountedThreadSafe<BrowsingDataAppCacheHelper> { 21 public: 22 explicit BrowsingDataAppCacheHelper(Profile* profile); 23 24 virtual void StartFetching(Callback0::Type* completion_callback); 25 virtual void CancelNotification(); 26 virtual void DeleteAppCacheGroup(const GURL& manifest_url); 27 info_collection()28 appcache::AppCacheInfoCollection* info_collection() const { 29 DCHECK(!is_fetching_); 30 return info_collection_; 31 } 32 33 protected: 34 friend class base::RefCountedThreadSafe<BrowsingDataAppCacheHelper>; 35 virtual ~BrowsingDataAppCacheHelper(); 36 37 scoped_ptr<Callback0::Type> completion_callback_; 38 scoped_refptr<appcache::AppCacheInfoCollection> info_collection_; 39 40 private: 41 void OnFetchComplete(int rv); 42 ChromeAppCacheService* GetAppCacheService(); 43 44 scoped_refptr<net::URLRequestContextGetter> request_context_getter_; 45 bool is_fetching_; 46 scoped_refptr<net::CancelableCompletionCallback<BrowsingDataAppCacheHelper> > 47 appcache_info_callback_; 48 49 DISALLOW_COPY_AND_ASSIGN(BrowsingDataAppCacheHelper); 50 }; 51 52 // This class is a thin wrapper around BrowsingDataAppCacheHelper that does not 53 // fetch its information from the appcache service, but gets them passed as 54 // a parameter during construction. 55 class CannedBrowsingDataAppCacheHelper : public BrowsingDataAppCacheHelper { 56 public: 57 explicit CannedBrowsingDataAppCacheHelper(Profile* profile); 58 59 // Return a copy of the appcache helper. Only one consumer can use the 60 // StartFetching method at a time, so we need to create a copy of the helper 61 // everytime we instantiate a cookies tree model for it. 62 CannedBrowsingDataAppCacheHelper* Clone(); 63 64 // Add an appcache to the set of canned caches that is returned by this 65 // helper. 66 void AddAppCache(const GURL& manifest_url); 67 68 // Clears the list of canned caches. 69 void Reset(); 70 71 // True if no appcaches are currently stored. 72 bool empty() const; 73 74 // BrowsingDataAppCacheHelper methods. 75 virtual void StartFetching(Callback0::Type* completion_callback); CancelNotification()76 virtual void CancelNotification() {} 77 78 private: 79 virtual ~CannedBrowsingDataAppCacheHelper(); 80 81 Profile* profile_; 82 83 DISALLOW_COPY_AND_ASSIGN(CannedBrowsingDataAppCacheHelper); 84 }; 85 86 #endif // CHROME_BROWSER_BROWSING_DATA_APPCACHE_HELPER_H_ 87