cef/include/capi/cef_scheme_capi.h

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

#include "include/capi/cef_base_capi.h"
#include "include/capi/cef_browser_capi.h"
#include "include/capi/cef_frame_capi.h"
#include "include/capi/cef_request_capi.h"
#include "include/capi/cef_resource_handler_capi.h"
#include "include/capi/cef_response_capi.h"

#ifdef __cplusplus
extern "C" {
#endif

struct _cef_scheme_handler_factory_t;

///
/// Structure that manages custom scheme registrations.
///
typedef struct _cef_scheme_registrar_t {
  ///
  /// Base structure.
  ///
  cef_base_scoped_t base;

  ///
  /// Register a custom scheme. This function should not be called for the
  /// built-in HTTP, HTTPS, FILE, FTP, ABOUT and DATA schemes.
  ///
  /// See cef_scheme_options_t for possible values for |options|.
  ///
  /// This function may be called on any thread. It should only be called once
  /// per unique |scheme_name| value. If |scheme_name| is already registered or
  /// if an error occurs this function will return false (0).
  ///
  int(CEF_CALLBACK* add_custom_scheme)(struct _cef_scheme_registrar_t* self,
                                       const cef_string_t* scheme_name,
                                       int options);
} cef_scheme_registrar_t;

///
/// Structure that creates cef_resource_handler_t instances for handling scheme
/// requests. The functions of this structure will always be called on the IO
/// thread.
///
typedef struct _cef_scheme_handler_factory_t {
  ///
  /// Base structure.
  ///
  cef_base_ref_counted_t base;

  ///
  /// Return a new resource handler instance to handle the request or an NULL
  /// reference to allow default handling of the request. |browser| and |frame|
  /// will be the browser window and frame respectively that originated the
  /// request or NULL if the request did not originate from a browser window
  /// (for example, if the request came from cef_urlrequest_t). The |request|
  /// object passed to this function cannot be modified.
  ///
  struct _cef_resource_handler_t*(CEF_CALLBACK* create)(
      struct _cef_scheme_handler_factory_t* self,
      struct _cef_browser_t* browser,
      struct _cef_frame_t* frame,
      const cef_string_t* scheme_name,
      struct _cef_request_t* request);
} cef_scheme_handler_factory_t;

///
/// Register a scheme handler factory with the global request context. An NULL
/// |domain_name| value for a standard scheme will cause the factory to match
/// all domain names. The |domain_name| value will be ignored for non-standard
/// schemes. If |scheme_name| is a built-in scheme and no handler is returned by
/// |factory| then the built-in scheme handler factory will be called. If
/// |scheme_name| is a custom scheme then you must also implement the
/// cef_app_t::on_register_custom_schemes() function in all processes. This
/// function may be called multiple times to change or remove the factory that
/// matches the specified |scheme_name| and optional |domain_name|. Returns
/// false (0) if an error occurs. This function may be called on any thread in
/// the browser process. Using this function is equivalent to calling cef_reques
/// t_context_t::cef_request_context_get_global_context()->register_scheme_handl
/// er_factory().
///
CEF_EXPORT int cef_register_scheme_handler_factory(
    const cef_string_t* scheme_name,
    const cef_string_t* domain_name,
    cef_scheme_handler_factory_t* factory);

///
/// Clear all scheme handler factories registered with the global request
/// context. Returns false (0) on error. This function may be called on any
/// thread in the browser process. Using this function is equivalent to calling
/// cef_request_context_t::cef_request_context_get_global_context()->clear_schem
/// e_handler_factories().
///
CEF_EXPORT int cef_clear_scheme_handler_factories(void);

#ifdef __cplusplus
}
#endif

#endif  // CEF_INCLUDE_CAPI_CEF_SCHEME_CAPI_H_