blob: 44e74b02429e0122e7f9687cc579ba5e27722475 [file] [log] [blame]
// Copyright 2017 The Chromium Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#include "chrome/browser/metrics/tab_stats_data_store.h"
#include <algorithm>
#include "chrome/browser/ui/browser.h"
#include "chrome/browser/ui/browser_list.h"
#include "chrome/browser/ui/tabs/tab_strip_model.h"
#include "chrome/common/pref_names.h"
#include "components/prefs/pref_service.h"
namespace metrics {
TabStatsDataStore::TabsStats::TabsStats()
: total_tab_count(0U),
total_tab_count_max(0U),
max_tab_per_window(0U),
window_count(0U),
window_count_max(0U) {}
TabStatsDataStore::TabStatsDataStore(PrefService* pref_service)
: pref_service_(pref_service) {
DCHECK(pref_service != nullptr);
tab_stats_.total_tab_count_max =
pref_service->GetInteger(prefs::kTabStatsTotalTabCountMax);
tab_stats_.max_tab_per_window =
pref_service->GetInteger(prefs::kTabStatsMaxTabsPerWindow);
tab_stats_.window_count_max =
pref_service->GetInteger(prefs::kTabStatsWindowCountMax);
}
void TabStatsDataStore::OnWindowAdded() {
DCHECK_CALLED_ON_VALID_SEQUENCE(sequence_checker_);
tab_stats_.window_count++;
UpdateWindowCountMaxIfNeeded();
}
void TabStatsDataStore::OnWindowRemoved() {
DCHECK_CALLED_ON_VALID_SEQUENCE(sequence_checker_);
DCHECK_GT(tab_stats_.window_count, 0U);
tab_stats_.window_count--;
}
void TabStatsDataStore::OnTabsAdded(size_t tab_count) {
DCHECK_CALLED_ON_VALID_SEQUENCE(sequence_checker_);
tab_stats_.total_tab_count += tab_count;
UpdateTotalTabCountMaxIfNeeded();
}
void TabStatsDataStore::OnTabsRemoved(size_t tab_count) {
DCHECK_CALLED_ON_VALID_SEQUENCE(sequence_checker_);
DCHECK_LE(tab_count, tab_stats_.total_tab_count);
tab_stats_.total_tab_count -= tab_count;
}
void TabStatsDataStore::UpdateMaxTabsPerWindowIfNeeded(size_t value) {
DCHECK_CALLED_ON_VALID_SEQUENCE(sequence_checker_);
if (value <= tab_stats_.max_tab_per_window)
return;
tab_stats_.max_tab_per_window = value;
pref_service_->SetInteger(prefs::kTabStatsMaxTabsPerWindow, value);
}
void TabStatsDataStore::ResetMaximumsToCurrentState() {
DCHECK_CALLED_ON_VALID_SEQUENCE(sequence_checker_);
// Set the maximums to 0 and call the Update* functions to reset it to the
// current value and update the pref registry.
tab_stats_.max_tab_per_window = 0;
tab_stats_.window_count_max = 0;
tab_stats_.total_tab_count_max = 0;
UpdateTotalTabCountMaxIfNeeded();
UpdateWindowCountMaxIfNeeded();
// Iterates over the list of browsers to find the one with the maximum number
// of tabs opened.
BrowserList* browser_list = BrowserList::GetInstance();
for (Browser* browser : *browser_list) {
UpdateMaxTabsPerWindowIfNeeded(
static_cast<size_t>(browser->tab_strip_model()->count()));
}
}
void TabStatsDataStore::UpdateTotalTabCountMaxIfNeeded() {
DCHECK_CALLED_ON_VALID_SEQUENCE(sequence_checker_);
if (tab_stats_.total_tab_count <= tab_stats_.total_tab_count_max)
return;
tab_stats_.total_tab_count_max = tab_stats_.total_tab_count;
pref_service_->SetInteger(prefs::kTabStatsTotalTabCountMax,
tab_stats_.total_tab_count_max);
}
void TabStatsDataStore::UpdateWindowCountMaxIfNeeded() {
DCHECK_CALLED_ON_VALID_SEQUENCE(sequence_checker_);
if (tab_stats_.window_count <= tab_stats_.window_count_max)
return;
tab_stats_.window_count_max = tab_stats_.window_count;
pref_service_->SetInteger(prefs::kTabStatsWindowCountMax,
tab_stats_.window_count_max);
}
} // namespace metrics