chrome/browser/profile_resetter/resettable_settings_snapshot.h

   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_RESETTABLE_SETTINGS_SNAPSHOT_H_
   6 #define CHROME_BROWSER_PROFILE_RESETTER_RESETTABLE_SETTINGS_SNAPSHOT_H_
   7
   8 #include "base/basictypes.h"
   9 #include "chrome/browser/prefs/session_startup_pref.h"
  10
  11 namespace base {
  12 class ListValue;
  13 }
  14
  15 // ResettableSettingsSnapshot captures some settings values at constructor. It
  16 // can calculate the difference between two snapshots. That is, modified fields.
  17 class ResettableSettingsSnapshot {
  18  public:
  19   // ExtensionList is a vector of pairs. The first component is the extension
  20   // id, the second is the name.
  21   typedef std::vector<std::pair<std::string, std::string> > ExtensionList;
  22   // All types of settings handled by this class.
  23   enum Field {
  24     STARTUP_MODE = 1 << 0,
  25     HOMEPAGE = 1 << 1,
  26     DSE_URL = 1 << 2,
  27     EXTENSIONS = 1 << 3,
  28
  29     ALL_FIELDS = STARTUP_MODE | HOMEPAGE | DSE_URL | EXTENSIONS,
  30   };
  31
  32   explicit ResettableSettingsSnapshot(Profile* profile);
  33   ~ResettableSettingsSnapshot();
  34
  35   // Getters.
  36   const std::vector<GURL>& startup_urls() const { return startup_.urls; }
  37
  38   SessionStartupPref::Type startup_type() const { return startup_.type; }
  39
  40   const std::string& homepage() const { return homepage_; }
  41
  42   bool homepage_is_ntp() const { return homepage_is_ntp_; }
  43
  44   const std::string& dse_url() const { return dse_url_; }
  45
  46   const ExtensionList& enabled_extensions() const {
  47     return enabled_extensions_;
  48   }
  49
  50   // Substitutes |enabled_extensions_| with
  51   // |enabled_extensions_|\|snapshot.enabled_extensions_|.
  52   void Subtract(const ResettableSettingsSnapshot& snapshot);
  53
  54   // For each member 'm' compares |this->m| with |snapshot.m| and sets the
  55   // corresponding |ResetableSettingsSnapshot::Field| bit to 1 in case of
  56   // difference.
  57   // The return value is a bit mask of Field values signifying which members
  58   // were different.
  59   int FindDifferentFields(const ResettableSettingsSnapshot& snapshot) const;
  60
  61  private:
  62   // Startup pages. URLs are always stored sorted.
  63   SessionStartupPref startup_;
  64
  65   std::string homepage_;
  66   bool homepage_is_ntp_;
  67
  68   // Default search engine.
  69   std::string dse_url_;
  70
  71   // List of pairs [id, name] for enabled extensions. Always sorted.
  72   ExtensionList enabled_extensions_;
  73
  74   DISALLOW_COPY_AND_ASSIGN(ResettableSettingsSnapshot);
  75 };
  76
  77 // The caller of ResettableSettingsSnapshot.
  78 enum SnapshotCaller {
  79   PROFILE_RESET_WEBUI = 0,
  80   PROFILE_RESET_PROMPT,
  81 };
  82
  83 // Serializes specified |snapshot| members to JSON format. |field_mask| is a bit
  84 // mask of ResettableSettingsSnapshot::Field values.
  85 std::string SerializeSettingsReport(const ResettableSettingsSnapshot& snapshot,
  86                                     int field_mask);
  87
  88 // Sends |report| as a feedback. |report| is supposed to be result of
  89 // SerializeSettingsReport().
  90 void SendSettingsFeedback(const std::string& report,
  91                           Profile* profile,
  92                           SnapshotCaller caller);
  93
  94 // Returns list of key/value pairs for all reported information from the
  95 // |profile| and some additional fields.
  96 base::ListValue* GetReadableFeedback(Profile* profile);
  97
  98 #endif  // CHROME_BROWSER_PROFILE_RESETTER_RESETTABLE_SETTINGS_SNAPSHOT_H_