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// Copyright 2021 The Chromium Authors
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#include "chrome/browser/ui/views/toolbar/chrome_labs/chrome_labs_view_controller.h"
#include <set>
#include <string>
#include <vector>
#include "base/callback_list.h"
#include "base/containers/contains.h"
#include "base/metrics/histogram_functions.h"
#include "base/numerics/safe_conversions.h"
#include "base/strings/string_number_conversions.h"
#include "base/strings/utf_string_conversions.h"
#include "base/time/time.h"
#include "build/build_config.h"
#include "chrome/browser/about_flags.h"
#include "chrome/browser/flag_descriptions.h"
#include "chrome/browser/lifetime/application_lifetime.h"
#include "chrome/browser/ui/browser.h"
#include "chrome/browser/ui/toolbar/chrome_labs/chrome_labs_model.h"
#include "chrome/browser/ui/toolbar/chrome_labs/chrome_labs_prefs.h"
#include "chrome/browser/ui/toolbar/chrome_labs/chrome_labs_utils.h"
#include "chrome/browser/ui/views/frame/browser_view.h"
#include "chrome/browser/ui/views/toolbar/chrome_labs/chrome_labs_bubble_view.h"
#include "chrome/browser/ui/views/toolbar/chrome_labs/chrome_labs_item_view.h"
#include "chrome/browser/ui/views/toolbar/toolbar_view.h"
#include "chrome/common/buildflags.h"
#include "components/prefs/scoped_user_pref_update.h"
#include "components/user_education/common/new_badge/new_badge_controller.h"
#include "components/webui/flags/feature_entry.h"
#include "components/webui/flags/flags_state.h"
#include "components/webui/flags/flags_storage.h"
#include "content/public/browser/browser_task_traits.h"
#include "content/public/browser/browser_thread.h"
#if BUILDFLAG(IS_CHROMEOS)
#include "chrome/browser/ash/settings/about_flags.h"
#include "chrome/browser/profiles/profile.h"
#else
#include "chrome/browser/browser_process.h"
#endif
namespace {
// These values are persisted to logs. Entries should not be renumbered and
// numeric values should never be reused.
enum class ChromeLabsSelectedLab {
kUnspecifiedSelected = 0,
// kReadLaterSelected = 1,
// kTabSearchSelected = 2,
// kTabScrollingSelected = 3,
// kSidePanelSelected = 4,
// kLensRegionSearchSelected = 5,
// kWebUITabStripSelected = 6,
// kTabSearchMediaTabsSelected = 7,
// kChromeRefresh2023Selected = 8,
// kTabGroupsSaveSelected = 9,
// kChromeWebuiRefresh2023Selected = 10,
kCustomizeChromeSidePanelSelected = 11,
kMaxValue = kCustomizeChromeSidePanelSelected,
};
void EmitToHistogram(const std::u16string& selected_lab_state,
const std::string& internal_name) {
const auto get_histogram_name = [](const std::u16string& selected_lab_state) {
if (selected_lab_state ==
base::ASCIIToUTF16(flags_ui::kGenericExperimentChoiceDefault)) {
return "Toolbar.ChromeLabs.DefaultLabAction";
}
if (selected_lab_state ==
base::ASCIIToUTF16(flags_ui::kGenericExperimentChoiceEnabled)) {
return "Toolbar.ChromeLabs.EnableLabAction";
}
if (selected_lab_state ==
base::ASCIIToUTF16(flags_ui::kGenericExperimentChoiceDisabled)) {
return "Toolbar.ChromeLabs.DisableLabAction";
}
return "";
};
const auto get_enum = [](const std::string& internal_name) {
return ChromeLabsSelectedLab::kUnspecifiedSelected;
};
const std::string histogram_name = get_histogram_name(selected_lab_state);
if (!histogram_name.empty()) {
base::UmaHistogramEnumeration(histogram_name, get_enum(internal_name));
}
}
// Returns the number of days since epoch (1970-01-01) in the local timezone.
uint32_t GetCurrentDay() {
base::TimeDelta delta = base::Time::Now() - base::Time::UnixEpoch();
return base::saturated_cast<uint32_t>(delta.InDays());
}
} // namespace
ChromeLabsViewController::ChromeLabsViewController(
const ChromeLabsModel* model,
ChromeLabsBubbleView* chrome_labs_bubble_view,
Browser* browser,
flags_ui::FlagsState* flags_state,
flags_ui::FlagsStorage* flags_storage)
: model_(model),
chrome_labs_bubble_view_(chrome_labs_bubble_view),
browser_(browser),
flags_state_(flags_state),
flags_storage_(flags_storage) {
ParseModelDataAndAddLabs();
SetRestartCallback();
}
int ChromeLabsViewController::GetIndexOfEnabledLabState(
const flags_ui::FeatureEntry* entry,
flags_ui::FlagsState* flags_state,
flags_ui::FlagsStorage* flags_storage) {
std::set<std::string> enabled_entries;
flags_state->GetSanitizedEnabledFlags(flags_storage, &enabled_entries);
for (int i = 0; i < entry->NumOptions(); i++) {
const std::string name = entry->NameForOption(i);
if (base::Contains(enabled_entries, name)) {
return i;
}
}
return 0;
}
void ChromeLabsViewController::ParseModelDataAndAddLabs() {
// Create each lab item.
const std::vector<LabInfo>& all_labs = model_->GetLabInfo();
for (const auto& lab : all_labs) {
const flags_ui::FeatureEntry* entry =
flags_state_->FindFeatureEntryByName(lab.internal_name);
if (IsChromeLabsFeatureValid(lab, browser_->profile())) {
bool valid_entry_type =
entry->type == flags_ui::FeatureEntry::FEATURE_VALUE ||
entry->type == flags_ui::FeatureEntry::FEATURE_WITH_PARAMS_VALUE;
DCHECK(valid_entry_type);
int default_index =
GetIndexOfEnabledLabState(entry, flags_state_, flags_storage_);
ChromeLabsItemView* lab_item = chrome_labs_bubble_view_->AddLabItem(
lab, default_index, entry, browser_,
base::BindRepeating(
[](ChromeLabsBubbleView* bubble_view, std::string internal_name,
flags_ui::FlagsStorage* flags_storage,
ChromeLabsItemView* item_view) {
size_t selected_index = item_view->GetSelectedIndex().value();
about_flags::SetFeatureEntryEnabled(
flags_storage,
internal_name + flags_ui::kMultiSeparatorChar +
base::NumberToString(selected_index),
true);
bubble_view->ShowRelaunchPrompt();
EmitToHistogram(
item_view->GetFeatureEntry()->DescriptionForOption(
selected_index),
internal_name);
},
chrome_labs_bubble_view_.get(), lab.internal_name,
flags_storage_));
lab_item->SetShowNewBadge(
ShouldLabShowNewBadge(browser_->profile(), lab));
}
}
}
void ChromeLabsViewController::RestartToApplyFlags() {
#if BUILDFLAG(IS_CHROMEOS)
// On Chrome OS be less intrusive and restart inside the user session after
// we apply the newly selected flags.
VLOG(1) << "Restarting to apply per-session flags...";
ash::about_flags::FeatureFlagsUpdate(
*flags_storage_, browser_->profile()->GetOriginalProfile()->GetPrefs())
.UpdateSessionManager();
#endif
// During the restart process some situations may cause previously active
// bubbles to deactivate. Since the restart action itself is not binded to any
// state, run the restart asynchronously. See crbug.com/1310212 where
// deactivation of bubbles is caused by the modal for downloads in progress
// being shown.
content::GetUIThreadTaskRunner({})->PostTask(
FROM_HERE, base::BindOnce(&chrome::AttemptRestart));
}
void ChromeLabsViewController::SetRestartCallback() {
restart_callback_ = chrome_labs_bubble_view_->RegisterRestartCallback(
base::BindRepeating(&ChromeLabsViewController::RestartToApplyFlags,
base::Unretained(this)));
}
user_education::DisplayNewBadge ChromeLabsViewController::ShouldLabShowNewBadge(
Profile* profile,
const LabInfo& lab) {
#if BUILDFLAG(IS_CHROMEOS)
ScopedDictPrefUpdate update(
profile->GetPrefs(), chrome_labs_prefs::kChromeLabsNewBadgeDictAshChrome);
#else
ScopedDictPrefUpdate update(g_browser_process->local_state(),
chrome_labs_prefs::kChromeLabsNewBadgeDict);
#endif
base::Value::Dict& new_badge_prefs = update.Get();
std::optional<int> start_day = new_badge_prefs.FindInt(lab.internal_name);
DCHECK(start_day);
uint32_t current_day = GetCurrentDay();
if (*start_day == chrome_labs_prefs::kChromeLabsNewExperimentPrefValue) {
// Set the dictionary value of this experiment to the number of days since
// epoch (1970-01-01). This value is the first day the user sees the new
// experiment in Chrome Labs and will be used to determine whether or not to
// show the new badge.
new_badge_prefs.Set(lab.internal_name, static_cast<int>(current_day));
return user_education::DisplayNewBadge(
base::PassKey<ChromeLabsViewController>(), true);
}
int days_elapsed = current_day - *start_day;
// Show the new badge for 7 days. If the users sets the clock such that the
// current day is now before |start_day| don’t show the new badge.
return user_education::DisplayNewBadge(
base::PassKey<ChromeLabsViewController>(),
days_elapsed >= 0 && days_elapsed < 7);
}
void ChromeLabsViewController::RestartToApplyFlagsForTesting() {
RestartToApplyFlags();
}
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