cef/include/cef_urlrequest.h

// Copyright (c) 2012 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
// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
// 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_URLREQUEST_H_
#define CEF_INCLUDE_CEF_URLREQUEST_H_
#pragma once

#include "include/cef_auth_callback.h"
#include "include/cef_base.h"
#include "include/cef_request.h"
#include "include/cef_request_context.h"
#include "include/cef_response.h"

class CefURLRequestClient;

///
// Class used to make a URL request. URL requests are not associated with a
// browser instance so no CefClient callbacks will be executed. URL requests
// can be created on any valid CEF thread in either the browser or render
// process. Once created the methods of the URL request object must be accessed
// on the same thread that created it.
///
/*--cef(source=library)--*/
class CefURLRequest : public virtual CefBaseRefCounted {
 public:
  typedef cef_urlrequest_status_t Status;
  typedef cef_errorcode_t ErrorCode;

  ///
  // Create a new URL request. Only GET, POST, HEAD, DELETE and PUT request
  // methods are supported. Multiple post data elements are not supported and
  // elements of type PDE_TYPE_FILE are only supported for requests originating
  // from the browser process. Requests originating from the render process will
  // receive the same handling as requests originating from Web content -- if
  // the response contains Content-Disposition or Mime-Type header values that
  // would not normally be rendered then the response may receive special
  // handling inside the browser (for example, via the file download code path
  // instead of the URL request code path). The |request| object will be marked
  // as read-only after calling this method. In the browser process if
  // |request_context| is empty the global request context will be used. In the
  // render process |request_context| must be empty and the context associated
  // with the current renderer process' browser will be used.
  ///
  /*--cef(optional_param=request_context)--*/
  static CefRefPtr<CefURLRequest> Create(
      CefRefPtr<CefRequest> request,
      CefRefPtr<CefURLRequestClient> client,
      CefRefPtr<CefRequestContext> request_context);

  ///
  // Returns the request object used to create this URL request. The returned
  // object is read-only and should not be modified.
  ///
  /*--cef()--*/
  virtual CefRefPtr<CefRequest> GetRequest() = 0;

  ///
  // Returns the client.
  ///
  /*--cef()--*/
  virtual CefRefPtr<CefURLRequestClient> GetClient() = 0;

  ///
  // Returns the request status.
  ///
  /*--cef(default_retval=UR_UNKNOWN)--*/
  virtual Status GetRequestStatus() = 0;

  ///
  // Returns the request error if status is UR_CANCELED or UR_FAILED, or 0
  // otherwise.
  ///
  /*--cef(default_retval=ERR_NONE)--*/
  virtual ErrorCode GetRequestError() = 0;

  ///
  // Returns the response, or NULL if no response information is available.
  // Response information will only be available after the upload has completed.
  // The returned object is read-only and should not be modified.
  ///
  /*--cef()--*/
  virtual CefRefPtr<CefResponse> GetResponse() = 0;

  ///
  // Returns true if the response body was served from the cache. This includes
  // responses for which revalidation was required.
  ///
  /*--cef()--*/
  virtual bool ResponseWasCached() = 0;

  ///
  // Cancel the request.
  ///
  /*--cef()--*/
  virtual void Cancel() = 0;
};

///
// Interface that should be implemented by the CefURLRequest client. The
// methods of this class will be called on the same thread that created the
// request unless otherwise documented.
///
/*--cef(source=client)--*/
class CefURLRequestClient : public virtual CefBaseRefCounted {
 public:
  ///
  // Notifies the client that the request has completed. Use the
  // CefURLRequest::GetRequestStatus method to determine if the request was
  // successful or not.
  ///
  /*--cef()--*/
  virtual void OnRequestComplete(CefRefPtr<CefURLRequest> request) = 0;

  ///
  // Notifies the client of upload progress. |current| denotes the number of
  // bytes sent so far and |total| is the total size of uploading data (or -1 if
  // chunked upload is enabled). This method will only be called if the
  // UR_FLAG_REPORT_UPLOAD_PROGRESS flag is set on the request.
  ///
  /*--cef()--*/
  virtual void OnUploadProgress(CefRefPtr<CefURLRequest> request,
                                int64 current,
                                int64 total) = 0;

  ///
  // Notifies the client of download progress. |current| denotes the number of
  // bytes received up to the call and |total| is the expected total size of the
  // response (or -1 if not determined).
  ///
  /*--cef()--*/
  virtual void OnDownloadProgress(CefRefPtr<CefURLRequest> request,
                                  int64 current,
                                  int64 total) = 0;

  ///
  // Called when some part of the response is read. |data| contains the current
  // bytes received since the last call. This method will not be called if the
  // UR_FLAG_NO_DOWNLOAD_DATA flag is set on the request.
  ///
  /*--cef()--*/
  virtual void OnDownloadData(CefRefPtr<CefURLRequest> request,
                              const void* data,
                              size_t data_length) = 0;

  ///
  // Called on the IO thread when the browser needs credentials from the user.
  // |isProxy| indicates whether the host is a proxy server. |host| contains the
  // hostname and |port| contains the port number. Return true to continue the
  // request and call CefAuthCallback::Continue() when the authentication
  // information is available. Return false to cancel the request. This method
  // will only be called for requests initiated from the browser process.
  ///
  /*--cef(optional_param=realm)--*/
  virtual bool GetAuthCredentials(bool isProxy,
                                  const CefString& host,
                                  int port,
                                  const CefString& realm,
                                  const CefString& scheme,
                                  CefRefPtr<CefAuthCallback> callback) = 0;
};

#endif  // CEF_INCLUDE_CEF_URLREQUEST_H_