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// Copyright 2024 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/startup/default_browser_prompt/default_browser_prompt_manager.h"
#include <memory>
#include "base/containers/contains.h"
#include "base/functional/bind.h"
#include "base/functional/callback_helpers.h"
#include "base/metrics/histogram_functions.h"
#include "base/time/time.h"
#include "base/timer/timer.h"
#include "build/build_config.h"
#include "chrome/browser/browser_process.h"
#include "chrome/browser/ui/browser.h"
#include "chrome/browser/ui/browser_list.h"
#include "chrome/browser/ui/startup/default_browser_prompt/default_browser_infobar_delegate.h"
#include "chrome/browser/ui/startup/default_browser_prompt/default_browser_prompt_prefs.h"
#include "chrome/browser/ui/ui_features.h"
#include "chrome/common/pref_names.h"
#include "components/infobars/core/confirm_infobar_delegate.h"
#include "components/infobars/core/infobar.h"
#include "components/prefs/pref_service.h"
#include "content/public/browser/web_contents.h"
#if BUILDFLAG(IS_WIN)
#include "chrome/browser/win/taskbar_manager.h"
#include "chrome/installer/util/install_util.h"
#include "chrome/installer/util/shell_util.h"
#endif
namespace {
#if !BUILDFLAG(IS_ANDROID) && !BUILDFLAG(IS_CHROMEOS)
bool ShouldShowPrompts() {
PrefService* local_state = g_browser_process->local_state();
const int declined_count =
local_state->GetInteger(prefs::kDefaultBrowserDeclinedCount);
const base::Time last_declined_time =
local_state->GetTime(prefs::kDefaultBrowserLastDeclinedTime);
constexpr int kMaxPromptCount = 5;
constexpr int kRepromptDurationDays = 21;
// A negative value for the max prompt count indicates that the prompt
// should be shown indefinitely. Otherwise, don't show the prompt if
// declined count equals or exceeds the max prompt count. A max prompt count
// of zero should mean that the prompt is never shown.
if (declined_count >= kMaxPromptCount) {
return false;
}
// Show if the user has never declined the prompt.
if (declined_count == 0) {
return true;
}
// Show if it has been long enough since the last declined time
return (base::Time::Now() - last_declined_time) >
base::Days(kRepromptDurationDays);
}
#endif // !BUILDFLAG(IS_ANDROID) && !BUILDFLAG(IS_CHROMEOS)
} // namespace
// static
DefaultBrowserPromptManager* DefaultBrowserPromptManager::GetInstance() {
return base::Singleton<DefaultBrowserPromptManager>::get();
}
void DefaultBrowserPromptManager::InitTabStripTracker() {
browser_tab_strip_tracker_ =
std::make_unique<BrowserTabStripTracker>(this, this);
// This will trigger a call to `OnTabStripModelChanged`, which will create
// the info bar.
browser_tab_strip_tracker_->Init();
}
bool DefaultBrowserPromptManager::MaybeShowPrompt() {
#if BUILDFLAG(IS_ANDROID) || BUILDFLAG(IS_CHROMEOS)
NOTREACHED() << "Unsupported platforms for showing default browser prompts.";
#else
SetAppMenuItemVisibility(true);
if (!ShouldShowPrompts()) {
return false;
}
#if BUILDFLAG(IS_WIN)
// On Windows, before showing the info bar, determine whether or not to
// offer to pin to taskbar, and store that result in `this`.
if (base::FeatureList::IsEnabled(
features::kOfferPinToTaskbarWhenSettingToDefault)) {
// base::Unretained is safe because DefaultBrowserPromptManager is a
// global singleton.
browser_util::ShouldOfferToPin(
ShellUtil::GetBrowserModelId(InstallUtil::IsPerUserInstall()),
base::BindOnce(&DefaultBrowserPromptManager::OnCanPinToTaskbarResult,
base::Unretained(this)));
return true;
}
#endif // BUILDFLAG(IS_WIN)
InitTabStripTracker();
return true;
#endif // BUILDFLAG(IS_ANDROID) || BUILDFLAG(IS_CHROMEOS)
}
void DefaultBrowserPromptManager::OnCanPinToTaskbarResult(
bool should_offer_to_pin) {
can_pin_to_taskbar_ = should_offer_to_pin;
InitTabStripTracker();
}
void DefaultBrowserPromptManager::CloseAllPrompts(CloseReason close_reason) {
#if BUILDFLAG(IS_ANDROID) || BUILDFLAG(IS_CHROMEOS)
NOTREACHED() << "Unsupported platforms for showing default browser prompts.";
#else
CloseAllInfoBars();
if (close_reason == CloseReason::kAccept) {
SetAppMenuItemVisibility(false);
}
#endif
}
DefaultBrowserPromptManager::DefaultBrowserPromptManager() = default;
DefaultBrowserPromptManager::~DefaultBrowserPromptManager() = default;
void DefaultBrowserPromptManager::CreateInfoBarForWebContents(
content::WebContents* web_contents,
Profile* profile) {
// Ensure that an infobar hasn't already been created.
CHECK(!infobars_.contains(web_contents));
infobars::InfoBar* infobar = DefaultBrowserInfoBarDelegate::Create(
infobars::ContentInfoBarManager::FromWebContents(web_contents), profile,
can_pin_to_taskbar_);
if (infobar == nullptr) {
// Infobar may be null if `InfoBarManager::ShouldShowInfoBar` returns false,
// in which case this function should do nothing. One case where this can
// happen is if the --headless command line switch is present.
return;
}
infobars_[web_contents] = infobar;
static_cast<ConfirmInfoBarDelegate*>(infobar->delegate())->AddObserver(this);
auto* infobar_manager =
infobars::ContentInfoBarManager::FromWebContents(web_contents);
infobar_manager->AddObserver(this);
}
void DefaultBrowserPromptManager::CloseAllInfoBars() {
browser_tab_strip_tracker_.reset();
for (const auto& infobars_entry : infobars_) {
infobars_entry.second->owner()->RemoveObserver(this);
infobars_entry.second->RemoveSelf();
}
infobars_.clear();
}
void DefaultBrowserPromptManager::SetAppMenuItemVisibility(bool show) {
show_app_menu_item_ = show;
}
bool DefaultBrowserPromptManager::ShouldTrackBrowser(Browser* browser) {
return browser->is_type_normal() &&
!browser->profile()->IsIncognitoProfile() &&
!browser->profile()->IsGuestSession();
}
void DefaultBrowserPromptManager::OnTabStripModelChanged(
TabStripModel* tab_strip_model,
const TabStripModelChange& change,
const TabStripSelectionChange& selection) {
if (change.type() == TabStripModelChange::kInserted) {
for (const auto& contents : change.GetInsert()->contents) {
if (!base::Contains(infobars_, contents.contents)) {
CreateInfoBarForWebContents(contents.contents,
tab_strip_model->profile());
}
}
}
}
void DefaultBrowserPromptManager::OnInfoBarRemoved(infobars::InfoBar* infobar,
bool animate) {
auto infobars_entry = std::ranges::find(
infobars_, infobar, &decltype(infobars_)::value_type::second);
if (infobars_entry == infobars_.end()) {
return;
}
infobar->owner()->RemoveObserver(this);
infobars_.erase(infobars_entry);
static_cast<ConfirmInfoBarDelegate*>(infobar->delegate())
->RemoveObserver(this);
if (user_initiated_info_bar_close_pending_.has_value()) {
CloseAllPrompts(user_initiated_info_bar_close_pending_.value());
user_initiated_info_bar_close_pending_.reset();
}
}
void DefaultBrowserPromptManager::OnAccept() {
base::UmaHistogramCounts100("DefaultBrowser.InfoBar.TimesShownBeforeAccept",
g_browser_process->local_state()->GetInteger(
prefs::kDefaultBrowserDeclinedCount) +
1);
user_initiated_info_bar_close_pending_ = CloseReason::kAccept;
}
void DefaultBrowserPromptManager::OnDismiss() {
user_initiated_info_bar_close_pending_ = CloseReason::kDismiss;
}
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