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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/webui/new_tab_footer/new_tab_footer_handler.h"
#include <utility>
#include "base/strings/utf_string_conversions.h"
#include "chrome/browser/browser_process.h"
#include "chrome/browser/enterprise/browser_management/browser_management_service.h"
#include "chrome/browser/enterprise/browser_management/management_service_factory.h"
#include "chrome/browser/enterprise/util/managed_browser_utils.h"
#include "chrome/browser/extensions/settings_api_helpers.h"
#include "chrome/browser/profiles/profile.h"
#include "chrome/browser/ui/browser_window/public/browser_window_interface.h"
#include "chrome/browser/ui/managed_ui.h"
#include "chrome/browser/ui/webui/new_tab_footer/footer_context_menu.h"
#include "chrome/browser/ui/webui/new_tab_footer/new_tab_footer.mojom.h"
#include "chrome/browser/ui/webui/webui_embedding_context.h"
#include "chrome/common/pref_names.h"
#include "chrome/common/webui_url_constants.h"
#include "chrome/grit/branded_strings.h"
#include "chrome/grit/generated_resources.h"
#include "components/policy/core/common/cloud/machine_level_user_cloud_policy_manager.h"
#include "components/prefs/pref_service.h"
#include "components/strings/grit/components_strings.h"
#include "components/vector_icons/vector_icons.h"
#include "content/public/browser/web_contents.h"
#include "net/base/url_util.h"
#include "ui/base/interaction/element_identifier.h"
#include "ui/base/l10n/l10n_util.h"
#include "ui/base/page_transition_types.h"
#include "ui/base/webui/web_ui_util.h"
#include "ui/base/window_open_disposition.h"
#include "ui/color/color_provider.h"
#include "ui/gfx/image/image_skia_rep_default.h"
#include "ui/gfx/paint_vector_icon.h"
NewTabFooterHandler::NewTabFooterHandler(
mojo::PendingReceiver<new_tab_footer::mojom::NewTabFooterHandler>
pending_handler,
mojo::PendingRemote<new_tab_footer::mojom::NewTabFooterDocument>
pending_document,
base::WeakPtr<TopChromeWebUIController::Embedder> embedder,
content::WebContents* web_contents)
: embedder_(embedder),
profile_(Profile::FromBrowserContext(web_contents->GetBrowserContext())),
web_contents_(web_contents),
document_(std::move(pending_document)),
handler_{this, std::move(pending_handler)} {
extension_registry_observation_.Observe(
extensions::ExtensionRegistry::Get(profile_));
profile_pref_change_registrar_.Init(profile_->GetPrefs());
profile_pref_change_registrar_.Add(
prefs::kNTPFooterExtensionAttributionEnabled,
base::BindRepeating(&NewTabFooterHandler::UpdateNtpExtensionName,
base::Unretained(this)));
local_state_pref_change_registrar_.Init(g_browser_process->local_state());
local_state_pref_change_registrar_.Add(
prefs::kNTPFooterManagementNoticeEnabled,
base::BindRepeating(&NewTabFooterHandler::UpdateManagementNotice,
base::Unretained(this)));
local_state_pref_change_registrar_.Add(
prefs::kEnterpriseCustomLabelForBrowser,
base::BindRepeating(&NewTabFooterHandler::UpdateManagementNotice,
base::Unretained(this)));
}
NewTabFooterHandler::~NewTabFooterHandler() = default;
void NewTabFooterHandler::UpdateNtpExtensionName() {
std::string id;
std::string name;
bool attribution_enabled = profile_->GetPrefs()->GetBoolean(
prefs::kNTPFooterExtensionAttributionEnabled);
if (attribution_enabled) {
if (const extensions::Extension* ntp_extension =
extensions::GetExtensionOverridingNewTabPage(profile_)) {
id = ntp_extension->id();
name = ntp_extension->name();
}
}
curr_ntp_extension_id_ = id;
document_->SetNtpExtensionName(std::move(name));
}
void NewTabFooterHandler::OpenExtensionOptionsPageWithFallback() {
GURL options_url = GURL(chrome::kChromeUIExtensionsURL);
if (!curr_ntp_extension_id_.empty()) {
options_url = net::AppendOrReplaceQueryParameter(options_url, "id",
curr_ntp_extension_id_);
}
OpenUrlInCurrentTab(options_url);
}
void NewTabFooterHandler::ShowContextMenu(const gfx::Point& point) {
const bool is_managed =
enterprise_util::CanShowEnterpriseBadgingForNTPFooter(profile_);
// TODO(crbug.com/424878134): Add managed-specific behavior.
if (embedder_ && !is_managed) {
embedder_->ShowContextMenu(point,
std::make_unique<FooterContextMenu>(profile_));
}
}
void NewTabFooterHandler::UpdateManagementNotice() {
if (!enterprise_util::CanShowEnterpriseBadgingForNTPFooter(profile_)) {
document_->SetManagementNotice(nullptr);
return;
}
auto notice = new_tab_footer::mojom::ManagementNotice::New();
notice->text = GetManagementNoticeText();
notice->bitmap_data_url =
GURL(webui::GetBitmapDataUrl(GetManagementNoticeIconBitmap()));
document_->SetManagementNotice(std::move(notice));
}
void NewTabFooterHandler::OpenUrlInCurrentTab(const GURL& url) {
auto* browser_window = webui::GetBrowserWindowInterface(web_contents_);
if (!browser_window || !url.is_valid()) {
return;
}
content::OpenURLParams params(url, content::Referrer(),
WindowOpenDisposition::CURRENT_TAB,
ui::PAGE_TRANSITION_LINK, false);
browser_window->OpenURL(params, /*navigation_handle_callback=*/{});
}
std::string NewTabFooterHandler::GetManagementNoticeText() {
CHECK(enterprise_util::CanShowEnterpriseBadgingForNTPFooter(profile_));
// Return "Managed by <label>" if custom label is set.
std::string custom_label = g_browser_process->local_state()->GetString(
prefs::kEnterpriseCustomLabelForBrowser);
if (!custom_label.empty()) {
return l10n_util::GetStringFUTF8(IDS_MANAGED_BY,
base::UTF8ToUTF16(custom_label));
}
// Return "Managed by <management domain>" if a cloud manager is known.
// Otherwise return the generic "Managed by your organization" message.
std::optional<std::string> cloud_policy_manager = GetDeviceManagerIdentity();
return cloud_policy_manager && !cloud_policy_manager->empty()
? l10n_util::GetStringFUTF8(
IDS_MANAGED_BY, base::UTF8ToUTF16(*cloud_policy_manager))
: l10n_util::GetStringUTF8(IDS_MANAGED);
}
SkBitmap NewTabFooterHandler::GetManagementNoticeIconBitmap() {
CHECK(enterprise_util::CanShowEnterpriseBadgingForNTPFooter(profile_));
// Return custom icon if set by policy.
gfx::Image* custom_icon =
policy::ManagementServiceFactory::GetForProfile(profile_)
->GetManagementIconForBrowser();
if (custom_icon && !custom_icon->IsEmpty()) {
return custom_icon->AsBitmap();
}
const gfx::ImageSkia default_management_icon =
gfx::CreateVectorIcon(gfx::IconDescription(
vector_icons::kBusinessIcon, 20,
web_contents_->GetColorProvider().GetColor(ui::kColorIcon)));
return default_management_icon.GetRepresentation(1.0f).GetBitmap();
}
void NewTabFooterHandler::OnExtensionReady(
content::BrowserContext* browser_context,
const extensions::Extension* extension) {
UpdateNtpExtensionName();
}
void NewTabFooterHandler::OnExtensionUnloaded(
content::BrowserContext* browser_context,
const extensions::Extension* extension,
extensions::UnloadedExtensionReason reason) {
UpdateNtpExtensionName();
}
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