chrome/browser/browsing_data/browsing_data_channel_id_helper.h

   1 // Copyright 2014 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_BROWSING_DATA_CHANNEL_ID_HELPER_H_
   6 #define CHROME_BROWSER_BROWSING_DATA_BROWSING_DATA_CHANNEL_ID_HELPER_H_
   7
   8 #include <map>
   9 #include <string>
  10
  11 #include "base/callback.h"
  12 #include "net/ssl/channel_id_store.h"
  13
  14 namespace net {
  15 class URLRequestContextGetter;
  16 }
  17
  18 // BrowsingDataChannelIDHelper is an interface for classes dealing with
  19 // aggregating and deleting browsing data stored in the channel ID store.
  20 // A client of this class need to call StartFetching from the UI thread to
  21 // initiate the flow, and it'll be notified by the callback in its UI thread at
  22 // some later point.
  23 class BrowsingDataChannelIDHelper
  24     : public base::RefCountedThreadSafe<BrowsingDataChannelIDHelper> {
  25  public:
  26   // Create a BrowsingDataChannelIDHelper instance for the given
  27   // |request_context|.
  28   static BrowsingDataChannelIDHelper* Create(
  29       net::URLRequestContextGetter* request_context);
  30
  31   typedef base::Callback<
  32       void(const net::ChannelIDStore::ChannelIDList&)>
  33       FetchResultCallback;
  34
  35   // Starts the fetching process, which will notify its completion via
  36   // callback.
  37   // This must be called only in the UI thread.
  38   virtual void StartFetching(const FetchResultCallback& callback) = 0;
  39   // Requests a single channel ID to be deleted.  This must be called in
  40   // the UI thread.
  41   virtual void DeleteChannelID(const std::string& server_id) = 0;
  42
  43  protected:
  44   friend class base::RefCountedThreadSafe<BrowsingDataChannelIDHelper>;
  45   virtual ~BrowsingDataChannelIDHelper() {}
  46 };
  47
  48 // This class is a thin wrapper around BrowsingDataChannelIDHelper that
  49 // does not fetch its information from the ChannelIDService, but gets them
  50 // passed as a parameter during construction.
  51 class CannedBrowsingDataChannelIDHelper
  52     : public BrowsingDataChannelIDHelper {
  53  public:
  54   CannedBrowsingDataChannelIDHelper();
  55
  56   // Add an ChannelID to the set of canned channel IDs that is
  57   // returned by this helper.
  58   void AddChannelID(
  59       const net::ChannelIDStore::ChannelID& channel_id);
  60
  61   // Clears the list of canned channel IDs.
  62   void Reset();
  63
  64   // True if no ChannelIDs are currently stored.
  65   bool empty() const;
  66
  67   // Returns the current number of channel IDs.
  68   size_t GetChannelIDCount() const;
  69
  70   // BrowsingDataChannelIDHelper methods.
  71   void StartFetching(const FetchResultCallback& callback) override;
  72   void DeleteChannelID(const std::string& server_id) override;
  73
  74  private:
  75   ~CannedBrowsingDataChannelIDHelper() override;
  76
  77   void FinishFetching();
  78
  79   typedef std::map<std::string, net::ChannelIDStore::ChannelID>
  80       ChannelIDMap;
  81   ChannelIDMap channel_id_map_;
  82
  83   FetchResultCallback completion_callback_;
  84
  85   DISALLOW_COPY_AND_ASSIGN(CannedBrowsingDataChannelIDHelper);
  86 };
  87
  88 #endif  // CHROME_BROWSER_BROWSING_DATA_BROWSING_DATA_CHANNEL_ID_HELPER_H_