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// Copyright 2015 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/memory/tab_manager_web_contents_data.h"
#include "base/metrics/histogram.h"
#include "base/time/tick_clock.h"
#include "chrome/browser/browser_process.h"
#include "chrome/browser/engagement/site_engagement_service.h"
#include "chrome/browser/profiles/profile.h"
#include "content/public/browser/browser_thread.h"
#include "content/public/browser/web_contents.h"
using base::TimeTicks;
using content::WebContents;
DEFINE_WEB_CONTENTS_USER_DATA_KEY(memory::TabManager::WebContentsData);
namespace memory {
TabManager::WebContentsData::WebContentsData(content::WebContents* web_contents)
: WebContentsObserver(web_contents), test_tick_clock_(nullptr) {}
TabManager::WebContentsData::~WebContentsData() {}
void TabManager::WebContentsData::DidStartLoading() {
// Marks the tab as no longer discarded if it has been reloaded from another
// source (ie: context menu).
SetDiscardState(false);
}
void TabManager::WebContentsData::WebContentsDestroyed() {
// If Chrome is shutting down, ignore this event.
if (g_browser_process->IsShuttingDown())
return;
// If the tab has been previously discarded but is not currently discarded
// (ie. it has been reloaded), we want to record the time it took between the
// reload event and the closing of the tab.
if (tab_data_.discard_count_ > 0 && !tab_data_.is_discarded_) {
auto delta = NowTicks() - tab_data_.last_reload_time_;
// Capped to one day for now, will adjust if necessary.
UMA_HISTOGRAM_CUSTOM_TIMES("TabManager.Discarding.ReloadToCloseTime", delta,
base::TimeDelta::FromSeconds(1),
base::TimeDelta::FromDays(1), 100);
}
}
bool TabManager::WebContentsData::IsDiscarded() {
return tab_data_.is_discarded_;
}
void TabManager::WebContentsData::SetDiscardState(bool state) {
if (tab_data_.is_discarded_ && !state) {
static int reload_count = 0;
tab_data_.last_reload_time_ = NowTicks();
UMA_HISTOGRAM_CUSTOM_COUNTS("TabManager.Discarding.ReloadCount",
++reload_count, 1, 1000, 50);
auto delta = tab_data_.last_reload_time_ - tab_data_.last_discard_time_;
// Capped to one day for now, will adjust if necessary.
UMA_HISTOGRAM_CUSTOM_TIMES("TabManager.Discarding.DiscardToReloadTime",
delta, base::TimeDelta::FromSeconds(1),
base::TimeDelta::FromDays(1), 100);
// Record the site engagement score if available.
if (tab_data_.engagement_score_ >= 0.0) {
UMA_HISTOGRAM_COUNTS_100("TabManager.Discarding.ReloadedEngagementScore",
tab_data_.engagement_score_);
}
if (tab_data_.last_inactive_time_ != base::TimeTicks::UnixEpoch()) {
delta = tab_data_.last_reload_time_ - tab_data_.last_inactive_time_;
UMA_HISTOGRAM_CUSTOM_TIMES("TabManager.Discarding.InactiveToReloadTime",
delta, base::TimeDelta::FromSeconds(1),
base::TimeDelta::FromDays(1), 100);
}
} else if (!tab_data_.is_discarded_ && state) {
static int discard_count = 0;
UMA_HISTOGRAM_CUSTOM_COUNTS("TabManager.Discarding.DiscardCount",
++discard_count, 1, 1000, 50);
tab_data_.last_discard_time_ = NowTicks();
// Record the site engagement score if available.
if (SiteEngagementService::IsEnabled()) {
SiteEngagementService* service = SiteEngagementService::Get(
Profile::FromBrowserContext(web_contents()->GetBrowserContext()));
if (service) {
tab_data_.engagement_score_ =
service->GetScore(web_contents()->GetLastCommittedURL());
UMA_HISTOGRAM_COUNTS_100(
"TabManager.Discarding.DiscardedEngagementScore",
tab_data_.engagement_score_);
}
}
}
tab_data_.is_discarded_ = state;
}
int TabManager::WebContentsData::DiscardCount() {
return tab_data_.discard_count_;
}
void TabManager::WebContentsData::IncrementDiscardCount() {
tab_data_.discard_count_++;
}
bool TabManager::WebContentsData::IsRecentlyAudible() {
return tab_data_.is_recently_audible_;
}
void TabManager::WebContentsData::SetRecentlyAudible(bool state) {
tab_data_.is_recently_audible_ = state;
}
TimeTicks TabManager::WebContentsData::LastAudioChangeTime() {
return tab_data_.last_audio_change_time_;
}
void TabManager::WebContentsData::SetLastAudioChangeTime(TimeTicks timestamp) {
tab_data_.last_audio_change_time_ = timestamp;
}
TimeTicks TabManager::WebContentsData::LastInactiveTime() {
return tab_data_.last_inactive_time_;
}
void TabManager::WebContentsData::SetLastInactiveTime(TimeTicks timestamp) {
tab_data_.last_inactive_time_ = timestamp;
}
// static
void TabManager::WebContentsData::CopyState(
content::WebContents* old_contents,
content::WebContents* new_contents) {
// Only copy if an existing state is found.
if (FromWebContents(old_contents)) {
CreateForWebContents(new_contents);
FromWebContents(new_contents)->tab_data_ =
FromWebContents(old_contents)->tab_data_;
FromWebContents(new_contents)->test_tick_clock_ =
FromWebContents(old_contents)->test_tick_clock_;
}
}
void TabManager::WebContentsData::set_test_tick_clock(
base::TickClock* test_tick_clock) {
test_tick_clock_ = test_tick_clock;
}
TimeTicks TabManager::WebContentsData::NowTicks() const {
if (!test_tick_clock_)
return TimeTicks::Now();
return test_tick_clock_->NowTicks();
}
TabManager::WebContentsData::Data::Data()
: is_discarded_(false),
discard_count_(0),
is_recently_audible_(false),
last_audio_change_time_(TimeTicks::UnixEpoch()),
last_discard_time_(TimeTicks::UnixEpoch()),
last_reload_time_(TimeTicks::UnixEpoch()),
last_inactive_time_(TimeTicks::UnixEpoch()),
engagement_score_(-1.0) {}
bool TabManager::WebContentsData::Data::operator==(const Data& right) const {
return is_discarded_ == right.is_discarded_ &&
is_recently_audible_ == right.is_recently_audible_ &&
last_audio_change_time_ == right.last_audio_change_time_ &&
last_discard_time_ == right.last_discard_time_ &&
last_reload_time_ == right.last_reload_time_ &&
last_inactive_time_ == right.last_inactive_time_ &&
engagement_score_ == right.engagement_score_;
}
bool TabManager::WebContentsData::Data::operator!=(const Data& right) const {
return !(*this == right);
}
} // namespace memory
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