File: group_suggestions_manager.h

package info (click to toggle)
chromium 139.0.7258.127-1
  • links: PTS, VCS
  • area: main
  • in suites:
  • size: 6,122,068 kB
  • sloc: cpp: 35,100,771; ansic: 7,163,530; javascript: 4,103,002; python: 1,436,920; asm: 946,517; xml: 746,709; pascal: 187,653; perl: 88,691; sh: 88,436; objc: 79,953; sql: 51,488; cs: 44,583; fortran: 24,137; makefile: 22,147; tcl: 15,277; php: 13,980; yacc: 8,984; ruby: 7,485; awk: 3,720; lisp: 3,096; lex: 1,327; ada: 727; jsp: 228; sed: 36
file content (101 lines) | stat: -rw-r--r-- 3,908 bytes parent folder | download | duplicates (3)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
// Copyright 2025 The Chromium Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.

#ifndef COMPONENTS_VISITED_URL_RANKING_INTERNAL_URL_GROUPING_GROUP_SUGGESTIONS_MANAGER_H_
#define COMPONENTS_VISITED_URL_RANKING_INTERNAL_URL_GROUPING_GROUP_SUGGESTIONS_MANAGER_H_

#include "base/containers/flat_set.h"
#include "base/functional/callback_forward.h"
#include "base/memory/weak_ptr.h"
#include "components/visited_url_ranking/internal/url_grouping/group_suggestions_tracker.h"
#include "components/visited_url_ranking/internal/url_grouping/grouping_heuristics.h"
#include "components/visited_url_ranking/public/url_grouping/group_suggestions.h"
#include "components/visited_url_ranking/public/url_grouping/group_suggestions_delegate.h"
#include "components/visited_url_ranking/public/url_grouping/group_suggestions_service.h"
#include "components/visited_url_ranking/public/visited_url_ranking_service.h"

class PrefService;

namespace visited_url_ranking {

// Tracks and runs computation of suggestions.
class GroupSuggestionsManager {
 public:
  GroupSuggestionsManager(VisitedURLRankingService* visited_url_ranking_service,
                          PrefService* pref_service);
  ~GroupSuggestionsManager();

  GroupSuggestionsManager(const GroupSuggestionsManager&) = delete;
  GroupSuggestionsManager& operator=(const GroupSuggestionsManager&) = delete;

  // Compute the suggestions based on latest events and tab state, called when
  // new events were observed to try looking for suggestions.
  void MaybeTriggerSuggestions(const GroupSuggestionsService::Scope& scope);

  // Register and unregister delegate, see SuggestionsDelegate.
  void RegisterDelegate(GroupSuggestionsDelegate* delegate,
                        const GroupSuggestionsService::Scope& scope);
  void UnregisterDelegate(GroupSuggestionsDelegate* delegate);

  void set_suggestion_computed_callback_for_testing(
      base::RepeatingClosure callback) {
    suggestion_computed_callback_ = std::move(callback);
  }

  void set_consecutive_computation_delay_for_testing(base::TimeDelta delay) {
    consecutive_computation_delay_ = delay;
  }

  // Retrieves the last cached suggestions for the given scope.
  // Does not clear the cache.
  std::optional<CachedSuggestions> GetCachedSuggestions(
      const GroupSuggestionsService::Scope& scope);

  // Invalidates the cached suggestions in the tracker.
  void InvalidateCache();

 private:
  friend class GroupSuggestionsManagerTest;

  class GroupSuggestionComputer;

  struct DelegateMetadata {
    raw_ptr<GroupSuggestionsDelegate> delegate;
    GroupSuggestionsService::Scope scope;
  };

  void OnFinishComputeSuggestions(const GroupSuggestionsService::Scope& scope,
                                  GroupingHeuristics::SuggestionsResult result);

  void ShowSuggestion(
      const GroupSuggestionsService::Scope& scope,
      GroupSuggestions suggestions,
      const std::vector<scoped_refptr<segmentation_platform::InputContext>>&
          inputs);

  void OnSuggestionResult(
      const GroupSuggestion& shown_suggestion,
      const std::vector<scoped_refptr<segmentation_platform::InputContext>>&
          inputs,
      UserResponseMetadata user_response);

  const raw_ptr<VisitedURLRankingService> visited_url_ranking_service_;
  base::flat_map<GroupSuggestionsDelegate*, DelegateMetadata>
      registered_delegates_;

  base::TimeDelta consecutive_computation_delay_;

  base::RepeatingClosure suggestion_computed_callback_;

  std::unique_ptr<GroupSuggestionComputer> suggestion_computer_;
  std::unique_ptr<GroupSuggestionsTracker> suggestion_tracker_;

  base::Time last_computation_time_;

  base::WeakPtrFactory<GroupSuggestionsManager> weak_ptr_factory_{this};
};

}  // namespace visited_url_ranking

#endif  // COMPONENTS_VISITED_URL_RANKING_INTERNAL_URL_GROUPING_GROUP_SUGGESTIONS_MANAGER_H_