File: default_browser_notification_handler.cc

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// Copyright 2026 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/default_browser/default_browser_notification_handler.h"

#include <utility>

#include "base/functional/bind.h"
#include "base/functional/callback_helpers.h"
#include "base/memory/scoped_refptr.h"
#include "chrome/browser/browser_process.h"
#include "chrome/browser/notifications/notification_display_service.h"
#include "chrome/browser/notifications/notification_display_service_factory.h"
#include "chrome/browser/notifications/system_notification_helper.h"
#include "chrome/browser/shell_integration.h"
#include "chrome/grit/branded_strings.h"
#include "chrome/grit/chrome_unscaled_resources.h"
#include "chrome/grit/generated_resources.h"
#include "ui/base/l10n/l10n_util.h"
#include "ui/base/resource/resource_bundle.h"
#include "ui/message_center/public/cpp/notification.h"
#include "ui/message_center/public/cpp/notification_types.h"
#include "ui/message_center/public/cpp/notifier_id.h"

namespace default_browser {

namespace {

void HandleDefaultBrowserNotificationClick(std::optional<int> button_index) {
  // The user clicked "Yes" (button 0) or the notification body.
  if (!button_index.has_value() || button_index.value() == 0) {
    // TODO(https://crbug.com/454597786): Implement guided settings-panel
    // setter. This should follow the rule of the setter in place.
  }

  // If the "No, thanks" button (index 1) is clicked, we do nothing and let
  // the notification close.
}

}  // namespace

DefaultBrowserNotificationHandler::DefaultBrowserNotificationHandler(
    DefaultBrowserManager& manager)
    : manager_(manager) {
  default_browser_change_subscription_ =
      manager.RegisterDefaultBrowserChanged(base::BindRepeating(
          &DefaultBrowserNotificationHandler::OnDefaultBrowserStateChanged,
          base::Unretained(this)));
}

DefaultBrowserNotificationHandler::~DefaultBrowserNotificationHandler() =
    default;

void DefaultBrowserNotificationHandler::OnDefaultBrowserStateChanged(
    DefaultBrowserState state) {
  if (state != shell_integration::NOT_DEFAULT) {
    return;
  }

  auto delegate =
      base::MakeRefCounted<message_center::HandleNotificationClickDelegate>(
          base::BindRepeating(&HandleDefaultBrowserNotificationClick));

  message_center::RichNotificationData optional_fields;
  optional_fields.buttons.emplace_back(
      l10n_util::GetStringUTF16(IDS_DEFAULT_BROWSER_CHANGED_YES_BUTTON));
  optional_fields.buttons.emplace_back(
      l10n_util::GetStringUTF16(IDS_DEFAULT_BROWSER_CHANGED_NO_THANKS_BUTTON));
  optional_fields.accessible_name =
      l10n_util::GetStringUTF16(IDS_DEFAULT_BROWSER_CHANGED_MESSAGE);

  const gfx::Image product_logo =
      ui::ResourceBundle::GetSharedInstance().GetImageNamed(
          IDR_PRODUCT_LOGO_128);

  message_center::Notification notification(
      message_center::NOTIFICATION_TYPE_SIMPLE, kNotificationId,
      l10n_util::GetStringUTF16(IDS_DEFAULT_BROWSER_CHANGED_TITLE),
      l10n_util::GetStringUTF16(IDS_DEFAULT_BROWSER_CHANGED_MESSAGE),
      ui::ImageModel::FromImage(product_logo),
      l10n_util::GetStringUTF16(IDS_PRODUCT_NAME), GURL(),
      message_center::NotifierId(message_center::NotifierType::SYSTEM_COMPONENT,
                                 kNotificationId),
      optional_fields, delegate);

  SystemNotificationHelper::GetInstance()->Display(std::move(notification));
}

}  // namespace default_browser