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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/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/common/pref_names.h"
#include "components/prefs/pref_service.h"
#include "components/tabs/public/tab_interface.h"
#include "content/public/browser/navigation_entry.h"
#include "content/public/browser/navigation_handle.h"
#include "content/public/common/url_constants.h"
namespace new_tab_footer {
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));
local_state_pref_change_registrar_.Add(
prefs::kEnterpriseCustomLabelForBrowser,
base::BindRepeating(&NewTabFooterController::UpdateFooterVisibility,
weak_factory_.GetWeakPtr(),
/*log_on_load_metric=*/false));
local_state_pref_change_registrar_.Add(
prefs::kEnterpriseLogoUrlForBrowser,
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) {
if (navigation_handle->HasCommitted() &&
navigation_handle->IsInPrimaryMainFrame()) {
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 show_managed = ShouldShowManagedFooter(url);
const bool show_extension = ShouldShowExtensionFooter(url);
const bool show = show_managed || show_extension;
if (show) {
footer_->ShowUI(load_start_timestamp, url);
} else {
footer_->CloseUI();
}
if (!log_on_load_metric) {
return;
}
if (ntp_footer::IsNtp(url, web_contents(), profile_)) {
base::UmaHistogramBoolean("NewTabPage.Footer.VisibleOnLoad", show);
}
if (show_managed) {
base::UmaHistogramEnumeration("NewTabPage.Footer.NoticeItem",
FooterNoticeItem::kManagementNotice);
}
if (show_extension) {
base::UmaHistogramEnumeration("NewTabPage.Footer.NoticeItem",
FooterNoticeItem::kExtensionAttribution);
}
}
void NewTabFooterController::OnActiveTabChanged(
BrowserWindowInterface* browser) {
Observe(browser->GetActiveTabInterface()->GetContents());
UpdateFooterVisibility(/*log_on_load_metric=*/true);
}
bool NewTabFooterController::ShouldSkipForErrorPage() const {
if (skip_error_page_check_for_testing_) {
return false;
}
return web_contents()->GetSiteInstance()->GetSiteURL().SchemeIs(
content::kChromeErrorScheme);
}
bool NewTabFooterController::ShouldShowManagedFooter(const GURL& url) {
if (ShouldSkipForErrorPage()) {
return false;
}
return ntp_footer::IsNtp(url, web_contents(), profile_) &&
enterprise_util::CanShowEnterpriseBadgingForNTPFooter(profile_);
}
bool NewTabFooterController::ShouldShowExtensionFooter(const GURL& url) {
if (ShouldSkipForErrorPage()) {
return false;
}
return ntp_footer::IsExtensionNtp(url, profile_) &&
profile_->GetPrefs()->GetBoolean(
prefs::kNTPFooterExtensionAttributionEnabled) &&
profile_->GetPrefs()->GetBoolean(prefs::kNtpFooterVisible);
}
} // namespace new_tab_footer
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