cef/include/capi/cef_browser_process_handler_capi.h

// Copyright (c) 2023 Marshall A. Greenblatt. All rights reserved.
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#ifndef CEF_INCLUDE_CAPI_CEF_BROWSER_PROCESS_HANDLER_CAPI_H_
#define CEF_INCLUDE_CAPI_CEF_BROWSER_PROCESS_HANDLER_CAPI_H_
#pragma once

#include "include/capi/cef_base_capi.h"
#include "include/capi/cef_client_capi.h"
#include "include/capi/cef_command_line_capi.h"
#include "include/capi/cef_preference_capi.h"
#include "include/capi/cef_values_capi.h"

#ifdef __cplusplus
extern "C" {
#endif

///
/// Structure used to implement browser process callbacks. The functions of this
/// structure will be called on the browser process main thread unless otherwise
/// indicated.
///
typedef struct _cef_browser_process_handler_t {
  ///
  /// Base structure.
  ///
  cef_base_ref_counted_t base;

  ///
  /// Provides an opportunity to register custom preferences prior to global and
  /// request context initialization.
  ///
  /// If |type| is CEF_PREFERENCES_TYPE_GLOBAL the registered preferences can be
  /// accessed via cef_preference_manager_t::GetGlobalPreferences after
  /// OnContextInitialized is called. Global preferences are registered a single
  /// time at application startup. See related cef_settings_t.cache_path and
  /// cef_settings_t.persist_user_preferences configuration.
  ///
  /// If |type| is CEF_PREFERENCES_TYPE_REQUEST_CONTEXT the preferences can be
  /// accessed via the cef_request_context_t after
  /// cef_request_context_handler_t::OnRequestContextInitialized is called.
  /// Request context preferences are registered each time a new
  /// cef_request_context_t is created. It is intended but not required that all
  /// request contexts have the same registered preferences. See related
  /// cef_request_context_settings_t.cache_path and
  /// cef_request_context_settings_t.persist_user_preferences configuration.
  ///
  /// Do not keep a reference to the |registrar| object. This function is called
  /// on the browser process UI thread.
  ///
  void(CEF_CALLBACK* on_register_custom_preferences)(
      struct _cef_browser_process_handler_t* self,
      cef_preferences_type_t type,
      struct _cef_preference_registrar_t* registrar);

  ///
  /// Called on the browser process UI thread immediately after the CEF context
  /// has been initialized.
  ///
  void(CEF_CALLBACK* on_context_initialized)(
      struct _cef_browser_process_handler_t* self);

  ///
  /// Called before a child process is launched. Will be called on the browser
  /// process UI thread when launching a render process and on the browser
  /// process IO thread when launching a GPU process. Provides an opportunity to
  /// modify the child process command line. Do not keep a reference to
  /// |command_line| outside of this function.
  ///
  void(CEF_CALLBACK* on_before_child_process_launch)(
      struct _cef_browser_process_handler_t* self,
      struct _cef_command_line_t* command_line);

  ///
  /// Called from any thread when work has been scheduled for the browser
  /// process main (UI) thread. This callback is used in combination with
  /// cef_settings_t.external_message_pump and cef_do_message_loop_work() in
  /// cases where the CEF message loop must be integrated into an existing
  /// application message loop (see additional comments and warnings on
  /// CefDoMessageLoopWork). This callback should schedule a
  /// cef_do_message_loop_work() call to happen on the main (UI) thread.
  /// |delay_ms| is the requested delay in milliseconds. If |delay_ms| is <= 0
  /// then the call should happen reasonably soon. If |delay_ms| is > 0 then the
  /// call should be scheduled to happen after the specified delay and any
  /// currently pending scheduled call should be cancelled.
  ///
  void(CEF_CALLBACK* on_schedule_message_pump_work)(
      struct _cef_browser_process_handler_t* self,
      int64_t delay_ms);

  ///
  /// Return the default client for use with a newly created browser window. If
  /// null is returned the browser will be unmanaged (no callbacks will be
  /// executed for that browser) and application shutdown will be blocked until
  /// the browser window is closed manually. This function is currently only
  /// used with the chrome runtime.
  ///
  struct _cef_client_t*(CEF_CALLBACK* get_default_client)(
      struct _cef_browser_process_handler_t* self);
} cef_browser_process_handler_t;

#ifdef __cplusplus
}
#endif

#endif  // CEF_INCLUDE_CAPI_CEF_BROWSER_PROCESS_HANDLER_CAPI_H_