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// Copyright 2023 The Chromium Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#ifndef CHROME_BROWSER_UI_TABS_ORGANIZATION_TRIGGER_H_
#define CHROME_BROWSER_UI_TABS_ORGANIZATION_TRIGGER_H_
#include <memory>
#include "base/functional/callback.h"
class BackoffLevelProvider;
class TabStripModel;
class Profile;
// Decides whether to trigger the nudge UI. Can incorporate considerations such
// as rate limiting / backoff, historical score distribution, historical CTR for
// this user, etc.
class TriggerPolicy {
public:
virtual ~TriggerPolicy() = default;
virtual bool ShouldTrigger(float score) = 0;
};
using TriggerScoringFunction = base::RepeatingCallback<float(TabStripModel*)>;
// Decides when to trigger the tab organization proactive nudge UI by scoring
// potential trigger moments and picking the best one based on a score threshold
// and trigger policy.
class TabOrganizationTrigger {
public:
// `scoring_function` calculates how good of a trigger moment this is.
// `score_threshold` determines how good of a trigger moment is good enough.
// If this trigger moment is good enough, `policy` decides whether we trigger
// now or bide our time.
TabOrganizationTrigger(TriggerScoringFunction scoring_function,
float score_threshold,
std::unique_ptr<TriggerPolicy> policy);
~TabOrganizationTrigger();
bool ShouldTrigger(TabStripModel* inputs) const;
private:
TriggerScoringFunction scoring_function_;
float score_threshold_;
std::unique_ptr<TriggerPolicy> policy_;
};
TriggerScoringFunction GetTriggerScoringFunction();
float GetTriggerScoreThreshold();
float GetSensitivityThreshold();
std::unique_ptr<TriggerPolicy> GetTriggerPolicy(
BackoffLevelProvider* backoff_level_provider,
Profile* profile);
std::unique_ptr<TabOrganizationTrigger> MakeTrigger(
BackoffLevelProvider* backoff_level_provider,
Profile* profile);
#endif // CHROME_BROWSER_UI_TABS_ORGANIZATION_TRIGGER_H_
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