src/include/cef_request_context_handler.h

// Copyright (c) 2013 Marshall A. Greenblatt. All rights reserved.
//
// Redistribution and use in source and binary forms, with or without
// modification, are permitted provided that the following conditions are
// met:
//
//    * Redistributions of source code must retain the above copyright
// notice, this list of conditions and the following disclaimer.
//    * Redistributions in binary form must reproduce the above
// copyright notice, this list of conditions and the following disclaimer
// in the documentation and/or other materials provided with the
// distribution.
//    * Neither the name of Google Inc. nor the name Chromium Embedded
// Framework nor the names of its contributors may be used to endorse
// or promote products derived from this software without specific prior
// written permission.
//
// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
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// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
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// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
//
// ---------------------------------------------------------------------------
//
// The contents of this file must follow a specific format in order to
// support the CEF translator tool. See the translator.README.txt file in the
// tools directory for more information.
//

#ifndef CEF_INCLUDE_CEF_REQUEST_CONTEXT_HANDLER_H_
#define CEF_INCLUDE_CEF_REQUEST_CONTEXT_HANDLER_H_
#pragma once

#include "include/cef_base.h"
#include "include/cef_browser.h"
#include "include/cef_frame.h"
#include "include/cef_request.h"
#include "include/cef_resource_request_handler.h"
#include "include/cef_web_plugin.h"

///
// Implement this interface to provide handler implementations. The handler
// instance will not be released until all objects related to the context have
// been destroyed.
///
/*--cef(source=client,no_debugct_check)--*/
class CefRequestContextHandler : public virtual CefBaseRefCounted {
 public:
  typedef cef_plugin_policy_t PluginPolicy;

  ///
  // Called on the browser process UI thread immediately after the request
  // context has been initialized.
  ///
  /*--cef()--*/
  virtual void OnRequestContextInitialized(
      CefRefPtr<CefRequestContext> request_context) {}

  ///
  // Called on multiple browser process threads before a plugin instance is
  // loaded. |mime_type| is the mime type of the plugin that will be loaded.
  // |plugin_url| is the content URL that the plugin will load and may be empty.
  // |is_main_frame| will be true if the plugin is being loaded in the main
  // (top-level) frame, |top_origin_url| is the URL for the top-level frame that
  // contains the plugin when loading a specific plugin instance or empty when
  // building the initial list of enabled plugins for 'navigator.plugins'
  // JavaScript state. |plugin_info| includes additional information about the
  // plugin that will be loaded. |plugin_policy| is the recommended policy.
  // Modify |plugin_policy| and return true to change the policy. Return false
  // to use the recommended policy. The default plugin policy can be set at
  // runtime using the `--plugin-policy=[allow|detect|block]` command-line flag.
  // Decisions to mark a plugin as disabled by setting |plugin_policy| to
  // PLUGIN_POLICY_DISABLED may be cached when |top_origin_url| is empty. To
  // purge the plugin list cache and potentially trigger new calls to this
  // method call CefRequestContext::PurgePluginListCache.
  ///
  /*--cef(optional_param=plugin_url,optional_param=top_origin_url)--*/
  virtual bool OnBeforePluginLoad(const CefString& mime_type,
                                  const CefString& plugin_url,
                                  bool is_main_frame,
                                  const CefString& top_origin_url,
                                  CefRefPtr<CefWebPluginInfo> plugin_info,
                                  PluginPolicy* plugin_policy) {
    return false;
  }

  ///
  // Called on the browser process IO thread before a resource request is
  // initiated. The |browser| and |frame| values represent the source of the
  // request, and may be NULL for requests originating from service workers or
  // CefURLRequest. |request| represents the request contents and cannot be
  // modified in this callback. |is_navigation| will be true if the resource
  // request is a navigation. |is_download| will be true if the resource request
  // is a download. |request_initiator| is the origin (scheme + domain) of the
  // page that initiated the request. Set |disable_default_handling| to true to
  // disable default handling of the request, in which case it will need to be
  // handled via CefResourceRequestHandler::GetResourceHandler or it will be
  // canceled. To allow the resource load to proceed with default handling
  // return NULL. To specify a handler for the resource return a
  // CefResourceRequestHandler object. This method will not be called if the
  // client associated with |browser| returns a non-NULL value from
  // CefRequestHandler::GetResourceRequestHandler for the same request
  // (identified by CefRequest::GetIdentifier).
  ///
  /*--cef(optional_param=browser,optional_param=frame,
          optional_param=request_initiator)--*/
  virtual CefRefPtr<CefResourceRequestHandler> GetResourceRequestHandler(
      CefRefPtr<CefBrowser> browser,
      CefRefPtr<CefFrame> frame,
      CefRefPtr<CefRequest> request,
      bool is_navigation,
      bool is_download,
      const CefString& request_initiator,
      bool& disable_default_handling) {
    return nullptr;
  }
};

#endif  // CEF_INCLUDE_CEF_REQUEST_CONTEXT_HANDLER_H_