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// Copyright 2015 The Chromium Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#include "components/browsing_data/core/counters/browsing_data_counter.h"
#include <memory>
#include <utility>
#include <vector>
#include "base/functional/bind.h"
#include "base/trace_event/trace_event.h"
#include "components/browsing_data/core/browsing_data_utils.h"
#include "components/browsing_data/core/pref_names.h"
#include "components/prefs/pref_service.h"
namespace browsing_data {
namespace {
static const int kDelayUntilShowCalculatingMs = 140;
static const int kDelayUntilReadyToShowResultMs = 1000;
}
BrowsingDataCounter::BrowsingDataCounter()
: initialized_(false), use_delay_(true), state_(State::IDLE) {}
BrowsingDataCounter::~BrowsingDataCounter() = default;
void BrowsingDataCounter::Init(PrefService* pref_service,
ClearBrowsingDataTab clear_browsing_data_tab,
ResultCallback callback) {
DCHECK(!initialized_);
callback_ = std::move(callback);
clear_browsing_data_tab_ = clear_browsing_data_tab;
pref_.Init(GetPrefName(), pref_service,
base::BindRepeating(&BrowsingDataCounter::Restart,
base::Unretained(this)));
period_.Init(GetTimePeriodPreferenceName(GetTab()), pref_service,
base::BindRepeating(&BrowsingDataCounter::Restart,
base::Unretained(this)));
initialized_ = true;
OnInitialized();
}
void BrowsingDataCounter::InitWithoutPeriodPref(
PrefService* pref_service,
ClearBrowsingDataTab clear_browsing_data_tab,
base::Time begin_time,
ResultCallback callback) {
DCHECK(!initialized_);
callback_ = std::move(callback);
clear_browsing_data_tab_ = clear_browsing_data_tab;
pref_.Init(GetPrefName(), pref_service,
base::BindRepeating(&BrowsingDataCounter::Restart,
base::Unretained(this)));
begin_time_ = begin_time;
initialized_ = true;
OnInitialized();
}
void BrowsingDataCounter::InitWithoutPref(base::Time begin_time,
ResultCallback callback) {
DCHECK(!initialized_);
use_delay_ = false;
callback_ = std::move(callback);
clear_browsing_data_tab_ = ClearBrowsingDataTab::ADVANCED;
begin_time_ = begin_time;
initialized_ = true;
OnInitialized();
}
void BrowsingDataCounter::OnInitialized() {}
base::Time BrowsingDataCounter::GetPeriodStart() {
if (period_.GetPrefName().empty())
return begin_time_;
return CalculateBeginDeleteTime(static_cast<TimePeriod>(*period_));
}
base::Time BrowsingDataCounter::GetPeriodEnd() {
if (period_.GetPrefName().empty())
return base::Time::Max();
return CalculateEndDeleteTime(static_cast<TimePeriod>(*period_));
}
void BrowsingDataCounter::Restart() {
DCHECK(initialized_);
TRACE_EVENT_NESTABLE_ASYNC_BEGIN1(
"browsing_data", "BrowsingDataCounter::Restart", TRACE_ID_LOCAL(this),
"data_type", GetPrefName());
if (state_ == State::IDLE) {
DCHECK(!timer_.IsRunning());
DCHECK(!staged_result_);
} else {
timer_.Stop();
staged_result_.reset();
}
state_ = State::RESTARTED;
state_transitions_.clear();
state_transitions_.push_back(state_);
if (use_delay_) {
timer_.Start(FROM_HERE, base::Milliseconds(kDelayUntilShowCalculatingMs),
this, &BrowsingDataCounter::TransitionToShowCalculating);
} else {
state_ = State::READY_TO_REPORT_RESULT;
}
TRACE_EVENT1("browsing_data", "BrowsingDataCounter::Count", "data_type",
GetPrefName());
Count();
}
void BrowsingDataCounter::SetBeginTime(base::Time begin_time) {
DCHECK(period_.GetPrefName().empty());
begin_time_ = begin_time;
Restart();
}
void BrowsingDataCounter::ReportResult(ResultInt value) {
ReportResult(std::make_unique<FinishedResult>(this, value));
}
void BrowsingDataCounter::ReportResult(std::unique_ptr<Result> result) {
DCHECK(initialized_);
DCHECK(result->Finished());
TRACE_EVENT_NESTABLE_ASYNC_END1(
"browsing_data", "BrowsingDataCounter::Restart", TRACE_ID_LOCAL(this),
"data_type", GetPrefName());
switch (state_) {
case State::RESTARTED:
case State::READY_TO_REPORT_RESULT:
DoReportResult(std::move(result));
return;
case State::SHOW_CALCULATING:
staged_result_ = std::move(result);
return;
case State::IDLE:
DUMP_WILL_BE_NOTREACHED() << "State::IDLE";
return;
case State::REPORT_STAGED_RESULT:
NOTREACHED() << "State::REPORT_STAGED_RESULT";
}
}
void BrowsingDataCounter::DoReportResult(std::unique_ptr<Result> result) {
DCHECK(initialized_);
DCHECK(state_ == State::RESTARTED ||
state_ == State::REPORT_STAGED_RESULT ||
state_ == State::READY_TO_REPORT_RESULT);
state_ = State::IDLE;
state_transitions_.push_back(state_);
timer_.Stop();
staged_result_.reset();
callback_.Run(std::move(result));
}
const std::vector<BrowsingDataCounter::State>&
BrowsingDataCounter::GetStateTransitionsForTesting() {
return state_transitions_;
}
ClearBrowsingDataTab BrowsingDataCounter::GetTab() const {
return clear_browsing_data_tab_;
}
void BrowsingDataCounter::TransitionToShowCalculating() {
DCHECK(initialized_);
DCHECK_EQ(State::RESTARTED, state_);
state_ = State::SHOW_CALCULATING;
state_transitions_.push_back(state_);
callback_.Run(std::make_unique<Result>(this));
timer_.Start(FROM_HERE, base::Milliseconds(kDelayUntilReadyToShowResultMs),
this, &BrowsingDataCounter::TransitionToReadyToReportResult);
}
void BrowsingDataCounter::TransitionToReadyToReportResult() {
DCHECK(initialized_);
DCHECK_EQ(State::SHOW_CALCULATING, state_);
if (staged_result_) {
state_ = State::REPORT_STAGED_RESULT;
state_transitions_.push_back(state_);
DoReportResult(std::move(staged_result_));
} else {
state_ = State::READY_TO_REPORT_RESULT;
state_transitions_.push_back(state_);
}
}
// BrowsingDataCounter::Result -------------------------------------------------
BrowsingDataCounter::Result::Result(const BrowsingDataCounter* source)
: source_(source) {
DCHECK(source);
}
BrowsingDataCounter::Result::~Result() = default;
bool BrowsingDataCounter::Result::Finished() const {
return false;
}
// BrowsingDataCounter::FinishedResult -----------------------------------------
BrowsingDataCounter::FinishedResult::FinishedResult(
const BrowsingDataCounter* source,
ResultInt value)
: Result(source), value_(value) {}
BrowsingDataCounter::FinishedResult::~FinishedResult() = default;
bool BrowsingDataCounter::FinishedResult::Finished() const {
return true;
}
BrowsingDataCounter::ResultInt BrowsingDataCounter::FinishedResult::Value()
const {
return value_;
}
// BrowsingDataCounter::SyncResult -----------------------------------------
BrowsingDataCounter::SyncResult::SyncResult(const BrowsingDataCounter* source,
ResultInt value,
bool sync_enabled)
: FinishedResult(source, value), sync_enabled_(sync_enabled) {}
BrowsingDataCounter::SyncResult::~SyncResult() = default;
} // namespace browsing_data
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