text: /*
   * Copyright (c) 2018-2020, Andreas Kling <kling@serenityos.org>
   *
   * SPDX-License-Identifier: BSD-2-Clause
   */
  
  #pragma once
  
  #include <AK/Function.h>
  #include <AK/URL.h>
  #include <LibCore/Object.h>
  #include <LibWeb/Loader/Resource.h>
  
  namespace Protocol {
  class RequestClient;
  }
  
  namespace Web {
  
  #if ARCH(I386)
  #    define CPU_STRING "x86"
  #else
  #    define CPU_STRING "x86_64"
  #endif
  
  constexpr auto default_user_agent = "Mozilla/4.0 (SerenityOS; " CPU_STRING ") LibWeb+LibJS (Not KHTML, nor Gecko) LibWeb";
  
  class ResourceLoader : public Core::Object {
      C_OBJECT(ResourceLoader)
  public:
      static ResourceLoader& the();
  
      RefPtr<Resource> load_resource(Resource::Type, LoadRequest&);
  
      void load(LoadRequest&, Function<void(ReadonlyBytes, const HashMap<String, String, CaseInsensitiveStringTraits>& response_headers, Optional<u32> status_code)> success_callback, Function<void(const String&, Optional<u32> status_code)> error_callback = nullptr);
      void load(const AK::URL&, Function<void(ReadonlyBytes, const HashMap<String, String, CaseInsensitiveStringTraits>& response_headers, Optional<u32> status_code)> success_callback, Function<void(const String&, Optional<u32> status_code)> error_callback = nullptr);
      void load_sync(LoadRequest&, Function<void(ReadonlyBytes, const HashMap<String, String, CaseInsensitiveStringTraits>& response_headers, Optional<u32> status_code)> success_callback, Function<void(const String&, Optional<u32> status_code)> error_callback = nullptr);
  
      Function<void()> on_load_counter_change;
  
      int pending_loads() const { return m_pending_loads; }
  
      Protocol::RequestClient& protocol_client() { return *m_protocol_client; }
  
      const String& user_agent() const { return m_user_agent; }
      void set_user_agent(const String& user_agent) { m_user_agent = user_agent; }
  
      void clear_cache();
  
  private:
      ResourceLoader();
      static bool is_port_blocked(int port);
  
      int m_pending_loads { 0 };
  
      RefPtr<Protocol::RequestClient> m_protocol_client;
      String m_user_agent;
  };
  
  }
  