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CEF4Delphi/source/uCEFUrlRequestClientComponent.pas

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// ************************************************************************
// ***************************** CEF4Delphi *******************************
// ************************************************************************
//
// CEF4Delphi is based on DCEF3 which uses CEF to embed a chromium-based
// browser in Delphi applications.
//
// The original license of DCEF3 still applies to CEF4Delphi.
//
// For more information about CEF4Delphi visit :
// https://www.briskbard.com/index.php?lang=en&pageid=cef
//
2021-01-01 12:11:30 +02:00
// Copyright � 2021 Salvador Diaz Fau. All rights reserved.
//
// ************************************************************************
// ************ vvvv Original license and comments below vvvv *************
// ************************************************************************
(*
* Delphi Chromium Embedded 3
*
* Usage allowed under the restrictions of the Lesser GNU General Public License
* or alternatively the restrictions of the Mozilla Public License 1.1
*
* Software distributed under the License is distributed on an "AS IS" basis,
* WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License for
* the specific language governing rights and limitations under the License.
*
* Unit owner : Henri Gourvest <hgourvest@gmail.com>
* Web site : http://www.progdigy.com
* Repository : http://code.google.com/p/delphichromiumembedded/
* Group : http://groups.google.com/group/delphichromiumembedded
*
* Embarcadero Technologies, Inc is not permitted to use or redistribute
* this source code without explicit permission.
*
*)
unit uCEFUrlRequestClientComponent;
{$IFDEF FPC}
{$MODE OBJFPC}{$H+}
{$ENDIF}
{$IFNDEF CPUX64}{$ALIGN ON}{$ENDIF}
{$MINENUMSIZE 4}
{$I cef.inc}
interface
uses
{$IFDEF DELPHI16_UP}
{$IFDEF MSWINDOWS}WinApi.Windows, WinApi.Messages, WinApi.ActiveX,{$ENDIF}
System.Classes, System.Math,
{$ELSE}
{$IFDEF MSWINDOWS}Windows, ActiveX,{$ENDIF} Classes, Math,
{$IFDEF FPC}
LCLProc, LCLType, LCLIntf, LResources, LMessages, InterfaceBase,
{$ELSE}
Messages,
{$ENDIF}
{$ENDIF}
uCEFTypes, uCEFInterfaces, uCEFUrlRequestClientEvents, uCEFUrlrequestClient, uCEFUrlRequest;
type
{$IFNDEF FPC}{$IFDEF DELPHI16_UP}[ComponentPlatformsAttribute(pidWin32 or pidWin64)]{$ENDIF}{$ENDIF}
TCEFUrlRequestClientComponent = class(TComponent, ICEFUrlRequestClientEvents)
protected
FClient : ICefUrlrequestClient;
FThreadID : TCefThreadId;
FOnRequestComplete : TOnRequestComplete;
FOnUploadProgress : TOnUploadProgress;
FOnDownloadProgress : TOnDownloadProgress;
FOnDownloadData : TOnDownloadData;
FOnGetAuthCredentials : TOnGetAuthCredentials;
FOnCreateURLRequest : TNotifyEvent;
// ICefUrlrequestClient
procedure doOnRequestComplete(const request: ICefUrlRequest);
procedure doOnUploadProgress(const request: ICefUrlRequest; current, total: Int64);
procedure doOnDownloadProgress(const request: ICefUrlRequest; current, total: Int64);
procedure doOnDownloadData(const request: ICefUrlRequest; data: Pointer; dataLength: NativeUInt);
function doOnGetAuthCredentials(isProxy: Boolean; const host: ustring; port: Integer; const realm, scheme: ustring; const callback: ICefAuthCallback): Boolean;
// Custom
procedure doOnCreateURLRequest;
procedure DestroyRequestClient;
public
constructor Create(AOwner: TComponent); override;
procedure AfterConstruction; override;
procedure BeforeDestruction; override;
procedure AddURLRequest;
property Client : ICefUrlrequestClient read FClient;
property ThreadID : TCefThreadId read FThreadID write FThreadID;
published
property OnRequestComplete : TOnRequestComplete read FOnRequestComplete write FOnRequestComplete;
property OnUploadProgress : TOnUploadProgress read FOnUploadProgress write FOnUploadProgress;
property OnDownloadProgress : TOnDownloadProgress read FOnDownloadProgress write FOnDownloadProgress;
property OnDownloadData : TOnDownloadData read FOnDownloadData write FOnDownloadData;
property OnGetAuthCredentials : TOnGetAuthCredentials read FOnGetAuthCredentials write FOnGetAuthCredentials;
property OnCreateURLRequest : TNotifyEvent read FOnCreateURLRequest write FOnCreateURLRequest;
end;
{$IFDEF FPC}
procedure Register;
{$ENDIF}
// *********************************************************
// ********************** ATTENTION ! **********************
// *********************************************************
// ** **
// ** MANY OF THE EVENTS IN CEF4DELPHI COMPONENTS LIKE **
// ** TCHROMIUM, TFMXCHROMIUM OR TCEFAPPLICATION ARE **
// ** EXECUTED IN A CEF THREAD BY DEFAULT. **
// ** **
// ** WINDOWS CONTROLS MUST BE CREATED AND DESTROYED IN **
// ** THE SAME THREAD TO AVOID ERRORS. **
// ** SOME OF THEM RECREATE THE HANDLERS IF THEY ARE **
// ** MODIFIED AND CAN CAUSE THE SAME ERRORS. **
// ** **
// ** DON'T CREATE, MODIFY OR DESTROY WINDOWS CONTROLS **
// ** INSIDE THE CEF4DELPHI EVENTS AND USE **
// ** SYNCHRONIZATION OBJECTS TO PROTECT VARIABLES AND **
// ** FIELDS IF THEY ARE ALSO USED IN THE MAIN THREAD. **
// ** **
// ** READ THIS FOR MORE INFORMATION : **
// ** https://www.briskbard.com/index.php?pageid=cef **
// ** **
// ** USE OUR FORUMS FOR MORE QUESTIONS : **
// ** https://www.briskbard.com/forum/ **
// ** **
// *********************************************************
// *********************************************************
implementation
uses
{$IFDEF DELPHI16_UP}
System.SysUtils,
{$ELSE}
SysUtils,
{$ENDIF}
uCEFRequest, uCEFTask, uCEFMiscFunctions;
constructor TCEFUrlRequestClientComponent.Create(AOwner: TComponent);
begin
inherited Create(AOwner);
FClient := nil;
FThreadID := TID_UI;
FOnRequestComplete := nil;
FOnUploadProgress := nil;
FOnDownloadProgress := nil;
FOnDownloadData := nil;
FOnGetAuthCredentials := nil;
FOnCreateURLRequest := nil;
end;
procedure TCEFUrlRequestClientComponent.AfterConstruction;
begin
inherited AfterConstruction;
if not(csDesigning in ComponentState) then
FClient := TCustomCefUrlrequestClient.Create(self);
end;
procedure TCEFUrlRequestClientComponent.BeforeDestruction;
begin
DestroyRequestClient;
inherited BeforeDestruction;
end;
procedure TCEFUrlRequestClientComponent.DestroyRequestClient;
begin
try
if (FClient <> nil) then
begin
FClient.RemoveReferences;
FClient := nil;
end;
except
on e : exception do
if CustomExceptionHandler('TCEFUrlRequestClientComponent.DestroyRequestClient', e) then raise;
end;
end;
procedure TCEFUrlRequestClientComponent.doOnRequestComplete(const request: ICefUrlRequest);
begin
if assigned(FOnRequestComplete) then FOnRequestComplete(self, request);
end;
procedure TCEFUrlRequestClientComponent.doOnUploadProgress(const request: ICefUrlRequest; current, total: Int64);
begin
if assigned(FOnUploadProgress) then FOnUploadProgress(self, request, current, total);
end;
procedure TCEFUrlRequestClientComponent.doOnDownloadProgress(const request: ICefUrlRequest; current, total: Int64);
begin
if assigned(FOnDownloadProgress) then FOnDownloadProgress(self, request, current, total);
end;
procedure TCEFUrlRequestClientComponent.doOnDownloadData(const request: ICefUrlRequest; data: Pointer; dataLength: NativeUInt);
begin
if assigned(FOnDownloadData) then FOnDownloadData(self, request, data, datalength);
end;
function TCEFUrlRequestClientComponent.doOnGetAuthCredentials(isProxy: Boolean; const host: ustring; port: Integer; const realm, scheme: ustring; const callback: ICefAuthCallback): Boolean;
begin
Result := False;
if assigned(FOnGetAuthCredentials) then FOnGetAuthCredentials(self, isProxy, host, port, realm, scheme, callback, Result);
end;
procedure TCEFUrlRequestClientComponent.doOnCreateURLRequest;
begin
if assigned(FOnCreateURLRequest) then FOnCreateURLRequest(self);
end;
procedure TCEFUrlRequestClientComponent.AddURLRequest;
var
TempTask : ICefTask;
begin
TempTask := TCefURLRequestTask.Create(self);
CefPostTask(FThreadID, TempTask);
end;
{$IFDEF FPC}
procedure Register;
begin
{$I res/tcefurlrequestclientcomponent.lrs}
RegisterComponents('Chromium', [TCEFUrlRequestClientComponent]);
end;
{$ENDIF}
end.