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      1 // Copyright (c) 2013 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_PROFILE_RESETTER_PROFILE_RESETTER_H_
      6 #define CHROME_BROWSER_PROFILE_RESETTER_PROFILE_RESETTER_H_
      7 
      8 #include "base/basictypes.h"
      9 #include "base/callback.h"
     10 #include "base/threading/non_thread_safe.h"
     11 #include "chrome/browser/browsing_data/browsing_data_remover.h"
     12 #include "chrome/browser/profile_resetter/brandcoded_default_settings.h"
     13 #include "chrome/browser/search_engines/template_url_service.h"
     14 
     15 class Profile;
     16 
     17 // This class allows resetting certain aspects of a profile to default values.
     18 // It is used in case the profile has been damaged due to malware or bad user
     19 // settings.
     20 class ProfileResetter : public base::NonThreadSafe,
     21                         public BrowsingDataRemover::Observer {
     22  public:
     23   // Flags indicating what aspects of a profile shall be reset.
     24   enum Resettable {
     25     DEFAULT_SEARCH_ENGINE = 1 << 0,
     26     HOMEPAGE = 1 << 1,
     27     CONTENT_SETTINGS = 1 << 2,
     28     COOKIES_AND_SITE_DATA = 1 << 3,
     29     EXTENSIONS = 1 << 4,
     30     STARTUP_PAGES = 1 << 5,
     31     PINNED_TABS = 1 << 6,
     32     // Update ALL if you add new values and check whether the type of
     33     // ResettableFlags needs to be enlarged.
     34     ALL = DEFAULT_SEARCH_ENGINE | HOMEPAGE | CONTENT_SETTINGS |
     35           COOKIES_AND_SITE_DATA | EXTENSIONS | STARTUP_PAGES | PINNED_TABS
     36   };
     37 
     38   // Bit vector for Resettable enum.
     39   typedef uint32 ResettableFlags;
     40 
     41   COMPILE_ASSERT(sizeof(ResettableFlags) == sizeof(Resettable),
     42                  type_ResettableFlags_doesnt_match_Resettable);
     43 
     44   explicit ProfileResetter(Profile* profile);
     45   virtual ~ProfileResetter();
     46 
     47   // Resets |resettable_flags| and calls |callback| on the UI thread on
     48   // completion. |default_settings| allows the caller to specify some default
     49   // settings. |default_settings| shouldn't be NULL.
     50   void Reset(ResettableFlags resettable_flags,
     51              scoped_ptr<BrandcodedDefaultSettings> master_settings,
     52              const base::Closure& callback);
     53 
     54   bool IsActive() const;
     55 
     56  private:
     57   // Marks |resettable| as done and triggers |callback_| if all pending jobs
     58   // have completed.
     59   void MarkAsDone(Resettable resettable);
     60 
     61   void ResetDefaultSearchEngine();
     62   void ResetHomepage();
     63   void ResetContentSettings();
     64   void ResetCookiesAndSiteData();
     65   void ResetExtensions();
     66   void ResetStartupPages();
     67   void ResetPinnedTabs();
     68 
     69   // BrowsingDataRemover::Observer:
     70   virtual void OnBrowsingDataRemoverDone() OVERRIDE;
     71 
     72   // Callback for when TemplateURLService has loaded.
     73   void OnTemplateURLServiceLoaded();
     74 
     75   Profile* const profile_;
     76   scoped_ptr<BrandcodedDefaultSettings> master_settings_;
     77   TemplateURLService* template_url_service_;
     78 
     79   // Flags of a Resetable indicating which reset operations we are still waiting
     80   // for.
     81   ResettableFlags pending_reset_flags_;
     82 
     83   // Called on UI thread when reset has been completed.
     84   base::Closure callback_;
     85 
     86   // If non-null it means removal is in progress. BrowsingDataRemover takes care
     87   // of deleting itself when done.
     88   BrowsingDataRemover* cookies_remover_;
     89 
     90   scoped_ptr<TemplateURLService::Subscription> template_url_service_sub_;
     91 
     92   DISALLOW_COPY_AND_ASSIGN(ProfileResetter);
     93 };
     94 
     95 #endif  // CHROME_BROWSER_PROFILE_RESETTER_PROFILE_RESETTER_H_
     96