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// Copyright 2025 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/new_tab_footer/footer_controller.h"
#include "base/metrics/histogram_functions.h"
#include "base/time/time.h"
#include "chrome/browser/browser_process.h"
#include "chrome/browser/enterprise/util/managed_browser_utils.h"
#include "chrome/browser/search/search.h"
#include "chrome/browser/ui/browser_window/public/browser_window_interface.h"
#include "chrome/browser/ui/ui_features.h"
#include "chrome/browser/ui/views/frame/browser_view.h"
#include "chrome/browser/ui/views/new_tab_footer/footer_web_view.h"
#include "chrome/browser/ui/webui/new_tab_footer/new_tab_footer_helper.h"
#include "chrome/browser/ui/webui/new_tab_page/new_tab_page_ui.h"
#include "chrome/browser/ui/webui/new_tab_page_third_party/new_tab_page_third_party_ui.h"
#include "chrome/browser/ui/webui/ntp/new_tab_ui.h"
#include "chrome/common/pref_names.h"
#include "components/prefs/pref_service.h"
#include "components/tabs/public/tab_interface.h"
#include "content/public/browser/navigation_entry.h"
namespace new_tab_footer {
namespace {
bool IsNtp(const GURL& url,
content::WebContents* web_contents,
Profile* profile) {
content::NavigationEntry* entry =
web_contents->GetController().GetLastCommittedEntry();
if (entry->IsInitialEntry()) {
entry = web_contents->GetController().GetVisibleEntry();
}
return NewTabUI::IsNewTab(url) || NewTabPageUI::IsNewTabPageOrigin(url) ||
NewTabPageThirdPartyUI::IsNewTabPageOrigin(url) ||
search::NavEntryIsInstantNTP(web_contents, entry) ||
ntp_footer::IsExtensionNtp(url, profile);
}
} // namespace
NewTabFooterController::NewTabFooterController(BrowserWindowInterface* browser,
NewTabFooterWebView* footer)
: browser_(browser), footer_(footer) {
profile_ = browser_->GetProfile();
pref_change_registrar_.Init(profile_->GetPrefs());
pref_change_registrar_.Add(
prefs::kNtpFooterVisible,
base::BindRepeating(&NewTabFooterController::UpdateFooterVisibility,
weak_factory_.GetWeakPtr(),
/*log_on_load_metric=*/false));
pref_change_registrar_.Add(
prefs::kNTPFooterExtensionAttributionEnabled,
base::BindRepeating(&NewTabFooterController::UpdateFooterVisibility,
weak_factory_.GetWeakPtr(),
/*log_on_load_metric=*/false));
#if BUILDFLAG(IS_WIN) || BUILDFLAG(IS_MAC) || BUILDFLAG(IS_LINUX)
local_state_pref_change_registrar_.Init(g_browser_process->local_state());
local_state_pref_change_registrar_.Add(
prefs::kNTPFooterManagementNoticeEnabled,
base::BindRepeating(&NewTabFooterController::UpdateFooterVisibility,
weak_factory_.GetWeakPtr(),
/*log_on_load_metric=*/false));
#endif
tab_activation_subscription_ = browser_->RegisterActiveTabDidChange(
base::BindRepeating(&NewTabFooterController::OnActiveTabChanged,
weak_factory_.GetWeakPtr()));
}
NewTabFooterController::~NewTabFooterController() = default;
void NewTabFooterController::TearDown() {
tab_activation_subscription_ = base::CallbackListSubscription();
pref_change_registrar_.Reset();
local_state_pref_change_registrar_.Reset();
profile_ = nullptr;
footer_ = nullptr;
browser_ = nullptr;
}
void NewTabFooterController::DidFinishNavigation(
content::NavigationHandle* navigation_handle) {
UpdateFooterVisibility(/*log_on_load_metric=*/true);
}
void NewTabFooterController::UpdateFooterVisibility(bool log_on_load_metric) {
base::TimeTicks load_start_timestamp = base::TimeTicks::Now();
// TODO(crbug.com/4438803): Support SideBySide. Currently, when it is enabled,
// footer_ will have no value.
if (!footer_) {
return;
}
GURL url = web_contents()->GetController().GetLastCommittedEntry()->GetURL();
if (url.is_empty()) {
url = web_contents()->GetController().GetVisibleEntry()->GetURL();
}
const bool is_ntp = IsNtp(url, web_contents(), profile_);
const bool managed_ntp =
is_ntp && enterprise_util::CanShowEnterpriseBadgingForNTPFooter(profile_);
const bool show =
managed_ntp ||
(profile_->GetPrefs()->GetBoolean(prefs::kNtpFooterVisible) &&
ntp_footer::CanShowExtensionFooter(url, profile_));
if (show) {
footer_->ShowUI(load_start_timestamp);
} else {
footer_->CloseUI();
}
if (is_ntp && log_on_load_metric) {
base::UmaHistogramBoolean("NewTabPage.Footer.VisibleOnLoad", show);
}
}
void NewTabFooterController::OnActiveTabChanged(
BrowserWindowInterface* browser) {
Observe(browser->GetActiveTabInterface()->GetContents());
UpdateFooterVisibility(/*log_on_load_metric=*/true);
}
} // namespace new_tab_footer
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