mirror of
https://github.com/salvadordf/CEF4Delphi.git
synced 2024-11-16 00:05:55 +01:00
374 lines
15 KiB
ObjectPascal
374 lines
15 KiB
ObjectPascal
// ************************************************************************
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// ***************************** CEF4Delphi *******************************
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// ************************************************************************
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//
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// CEF4Delphi is based on DCEF3 which uses CEF to embed a chromium-based
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// browser in Delphi applications.
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//
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// The original license of DCEF3 still applies to CEF4Delphi.
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//
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// For more information about CEF4Delphi visit :
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// https://www.briskbard.com/index.php?lang=en&pageid=cef
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//
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// Copyright © 2019 Salvador Diaz Fau. All rights reserved.
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//
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// ************************************************************************
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// ************ vvvv Original license and comments below vvvv *************
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// ************************************************************************
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(*
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* Delphi Chromium Embedded 3
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*
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* Usage allowed under the restrictions of the Lesser GNU General Public License
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* or alternatively the restrictions of the Mozilla Public License 1.1
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*
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* Software distributed under the License is distributed on an "AS IS" basis,
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* WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License for
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* the specific language governing rights and limitations under the License.
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*
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* Unit owner : Henri Gourvest <hgourvest@gmail.com>
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* Web site : http://www.progdigy.com
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* Repository : http://code.google.com/p/delphichromiumembedded/
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* Group : http://groups.google.com/group/delphichromiumembedded
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*
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* Embarcadero Technologies, Inc is not permitted to use or redistribute
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* this source code without explicit permission.
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*
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*)
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unit uCEFServerComponent;
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{$IFDEF FPC}
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{$MODE OBJFPC}{$H+}
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{$ENDIF}
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{$IFNDEF CPUX64}{$ALIGN ON}{$ENDIF}
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{$MINENUMSIZE 4}
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{$I cef.inc}
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interface
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uses
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{$IFDEF DELPHI16_UP}
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{$IFDEF MSWINDOWS}WinApi.Windows, WinApi.Messages, WinApi.ActiveX,{$ENDIF}
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System.Classes, Vcl.Controls, Vcl.Graphics, Vcl.Forms, System.Math,
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{$ELSE}
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{$IFDEF MSWINDOWS}Windows, ActiveX,{$ENDIF} Classes, Forms, Controls, Graphics, Math,
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{$IFDEF FPC}
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LCLProc, LCLType, LCLIntf, LResources, LMessages, InterfaceBase,
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{$ELSE}
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Messages,
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{$ENDIF}
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{$ENDIF}
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uCEFTypes, uCEFInterfaces, uCEFServer, uCEFServerEvents, uCEFServerHandler;
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const
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DEFAULT_CEFSERVER_ADDRESS = '127.0.0.1';
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DEFAULT_CEFSERVER_PORT = 8099;
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DEFAULT_CEFSERVER_BACKLOG = 10;
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type
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{$IFNDEF FPC}{$IFDEF DELPHI16_UP}[ComponentPlatformsAttribute(pidWin32 or pidWin64)]{$ENDIF}{$ENDIF}
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TCEFServerComponent = class(TComponent, IServerEvents)
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protected
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FHandler : ICefServerHandler;
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FServer : ICefServer;
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FInitialized : boolean;
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// IServerEvents
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FOnServerCreated : TOnServerCreated;
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FOnServerDestroyed : TOnServerDestroyed;
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FOnClientConnected : TOnClientConnected;
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FOnClientDisconnected : TOnClientDisconnected;
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FOnHttpRequest : TOnHttpRequest;
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FOnWebSocketRequest : TOnWebSocketRequest;
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FOnWebSocketConnected : TOnWebSocketConnected;
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FOnWebSocketMessage : TOnWebSocketMessage;
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function GetInitialized : boolean;
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function GetIsRunning : boolean;
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function GetAddress : ustring;
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function GetHasConnection : boolean;
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// IServerEvents
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procedure doOnServerCreated(const server: ICefServer); virtual;
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procedure doOnServerDestroyed(const server: ICefServer); virtual;
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procedure doOnClientConnected(const server: ICefServer; connection_id: Integer); virtual;
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procedure doOnClientDisconnected(const server: ICefServer; connection_id: Integer); virtual;
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procedure doOnHttpRequest(const server: ICefServer; connection_id: Integer; const client_address: ustring; const request: ICefRequest); virtual;
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procedure doOnWebSocketRequest(const server: ICefServer; connection_id: Integer; const client_address: ustring; const request: ICefRequest; const callback: ICefCallback); virtual;
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procedure doOnWebSocketConnected(const server: ICefServer; connection_id: Integer); virtual;
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procedure doOnWebSocketMessage(const server: ICefServer; connection_id: Integer; const data: Pointer; data_size: NativeUInt); virtual;
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procedure InitializeEvents;
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public
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constructor Create(AOwner: TComponent); override;
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destructor Destroy; override;
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procedure CreateServer(const address : ustring = DEFAULT_CEFSERVER_ADDRESS; port : uint16 = DEFAULT_CEFSERVER_PORT; backlog : Integer = DEFAULT_CEFSERVER_BACKLOG);
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procedure Shutdown;
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function IsValidConnection(connection_id: Integer) : boolean;
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procedure SendHttp200response(connection_id: Integer; const content_type: ustring; const data: Pointer; data_size: NativeUInt);
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procedure SendHttp404response(connection_id: Integer);
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procedure SendHttp500response(connection_id: Integer; const error_message: ustring);
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procedure SendHttpResponse(connection_id, response_code: Integer; const content_type: ustring; content_length: int64; const extra_headers: ICefStringMultimap);
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procedure SendRawData(connection_id: Integer; const data: Pointer; data_size: NativeUInt);
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procedure CloseConnection(connection_id: Integer);
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procedure SendWebSocketMessage(connection_id: Integer; const data: Pointer; data_size: NativeUInt);
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property Initialized : boolean read GetInitialized;
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property IsRunning : boolean read GetIsRunning;
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property Address : ustring read GetAddress;
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property HasConnection : boolean read GetHasConnection;
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published
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property OnServerCreated : TOnServerCreated read FOnServerCreated write FOnServerCreated;
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property OnServerDestroyed : TOnServerDestroyed read FOnServerDestroyed write FOnServerDestroyed;
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property OnClientConnected : TOnClientConnected read FOnClientConnected write FOnClientConnected;
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property OnClientDisconnected : TOnClientDisconnected read FOnClientDisconnected write FOnClientDisconnected;
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property OnHttpRequest : TOnHttpRequest read FOnHttpRequest write FOnHttpRequest;
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property OnWebSocketRequest : TOnWebSocketRequest read FOnWebSocketRequest write FOnWebSocketRequest;
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property OnWebSocketConnected : TOnWebSocketConnected read FOnWebSocketConnected write FOnWebSocketConnected;
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property OnWebSocketMessage : TOnWebSocketMessage read FOnWebSocketMessage write FOnWebSocketMessage;
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end;
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{$IFDEF FPC}
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procedure Register;
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{$ENDIF}
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// *********************************************************
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// ********************** ATTENTION ! **********************
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// *********************************************************
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// ** **
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// ** MANY OF THE EVENTS IN CEF4DELPHI COMPONENTS LIKE **
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// ** TCHROMIUM, TFMXCHROMIUM OR TCEFAPPLICATION ARE **
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// ** EXECUTED IN A CEF THREAD BY DEFAULT. **
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// ** **
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// ** WINDOWS CONTROLS MUST BE CREATED AND DESTROYED IN **
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// ** THE SAME THREAD TO AVOID ERRORS. **
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// ** SOME OF THEM RECREATE THE HANDLERS IF THEY ARE **
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// ** MODIFIED AND CAN CAUSE THE SAME ERRORS. **
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// ** **
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// ** DON'T CREATE, MODIFY OR DESTROY WINDOWS CONTROLS **
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// ** INSIDE THE CEF4DELPHI EVENTS AND USE **
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// ** SYNCHRONIZATION OBJECTS TO PROTECT VARIABLES AND **
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// ** FIELDS IF THEY ARE ALSO USED IN THE MAIN THREAD. **
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// ** **
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// ** READ THIS FOR MORE INFORMATION : **
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// ** https://www.briskbard.com/index.php?pageid=cef **
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// ** **
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// ** USE OUR FORUMS FOR MORE QUESTIONS : **
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// ** https://www.briskbard.com/forum/ **
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// ** **
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// *********************************************************
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// *********************************************************
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implementation
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uses
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uCEFLibFunctions, uCEFApplication, uCEFMiscFunctions;
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// For more information about the TCEFServerComponent properties and functions
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// read the code comments in the CEF source file /include/capi/cef_server_cap.h
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constructor TCEFServerComponent.Create(AOwner: TComponent);
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begin
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inherited Create(aOwner);
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FHandler := nil;
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FServer := nil;
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FInitialized := False;
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InitializeEvents;
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end;
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destructor TCEFServerComponent.Destroy;
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begin
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FServer := nil;
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FHandler := nil;
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inherited Destroy;
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end;
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procedure TCEFServerComponent.InitializeEvents;
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begin
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FOnServerCreated := nil;
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FOnServerDestroyed := nil;
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FOnClientConnected := nil;
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FOnClientDisconnected := nil;
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FOnHttpRequest := nil;
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FOnWebSocketRequest := nil;
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FOnWebSocketConnected := nil;
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FOnWebSocketMessage := nil;
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end;
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function TCEFServerComponent.GetInitialized : boolean;
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begin
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Result := FInitialized and (FHandler <> nil) and (FServer <> nil);
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end;
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function TCEFServerComponent.GetIsRunning : boolean;
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begin
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Result := Initialized and FServer.IsRunning;
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end;
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function TCEFServerComponent.GetAddress : ustring;
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begin
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if Initialized then
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Result := FServer.GetAddress
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else
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Result := '';
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end;
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function TCEFServerComponent.GetHasConnection : boolean;
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begin
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Result := Initialized and FServer.HasConnection;
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end;
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procedure TCEFServerComponent.doOnServerCreated(const server: ICefServer);
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begin
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if (FServer = nil) and
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(server <> nil) and
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server.IsRunning and
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not(server.HasConnection) then
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begin
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FServer := server;
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FInitialized := True;
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end;
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if assigned(FOnServerCreated) then FOnServerCreated(self, server);
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end;
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procedure TCEFServerComponent.doOnServerDestroyed(const server: ICefServer);
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begin
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if assigned(FOnServerDestroyed) then FOnServerDestroyed(self, server);
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FServer := nil;
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FInitialized := False;
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end;
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procedure TCEFServerComponent.doOnClientConnected(const server: ICefServer; connection_id: Integer);
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begin
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if assigned(FOnClientConnected) then FOnClientConnected(self, server, connection_id);
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end;
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procedure TCEFServerComponent.doOnClientDisconnected(const server: ICefServer; connection_id: Integer);
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begin
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if assigned(FOnClientDisconnected) then FOnClientDisconnected(self, server, connection_id);
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end;
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procedure TCEFServerComponent.doOnHttpRequest(const server : ICefServer;
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connection_id : Integer;
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const client_address : ustring;
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const request : ICefRequest);
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begin
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if assigned(FOnHttpRequest) then FOnHttpRequest(self, server, connection_id, client_address, request);
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end;
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procedure TCEFServerComponent.doOnWebSocketRequest(const server : ICefServer;
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connection_id : Integer;
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const client_address : ustring;
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const request : ICefRequest;
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const callback : ICefCallback);
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begin
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if assigned(FOnWebSocketRequest) then FOnWebSocketRequest(self, server, connection_id, client_address, request, callback);
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end;
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procedure TCEFServerComponent.doOnWebSocketConnected(const server: ICefServer; connection_id: Integer);
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begin
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if assigned(FOnWebSocketConnected) then FOnWebSocketConnected(self, server, connection_id);
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end;
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procedure TCEFServerComponent.doOnWebSocketMessage(const server : ICefServer;
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connection_id : Integer;
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const data : Pointer;
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data_size : NativeUInt);
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begin
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if assigned(FOnWebSocketMessage) then FOnWebSocketMessage(self, server, connection_id, data, data_size);
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end;
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procedure TCEFServerComponent.CreateServer(const address : ustring; port : uint16; backlog : Integer);
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const
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CEFSERVER_MIN_PORT = 1025;
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CEFSERVER_MAX_PORT = 65535;
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var
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TempAddress : TCefString;
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TempPort : integer;
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begin
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if (GlobalCEFApp <> nil) and
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(GlobalCEFApp.Status = asInitialized) and
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not(Initialized) and
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(length(address) > 0) then
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begin
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if (FHandler = nil) then FHandler := TCustomServerHandler.Create(self);
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TempPort := max(CEFSERVER_MIN_PORT, min(CEFSERVER_MAX_PORT, port));
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TempAddress := CefString(address);
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cef_server_create(@TempAddress, TempPort, backlog, FHandler.Wrap);
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end;
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end;
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procedure TCEFServerComponent.Shutdown;
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begin
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if Initialized then FServer.shutdown;
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end;
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function TCEFServerComponent.IsValidConnection(connection_id: Integer) : boolean;
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begin
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Result := Initialized and FServer.IsValidConnection(connection_id);
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end;
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procedure TCEFServerComponent.SendHttp200response(connection_id : Integer;
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const content_type : ustring;
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const data : Pointer;
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data_size : NativeUInt);
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begin
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if Initialized then FServer.SendHttp200response(connection_id, content_type, data, data_size);
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end;
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procedure TCEFServerComponent.SendHttp404response(connection_id: Integer);
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begin
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if Initialized then FServer.SendHttp404response(connection_id);
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end;
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procedure TCEFServerComponent.SendHttp500response(connection_id: Integer; const error_message: ustring);
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begin
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if Initialized then FServer.SendHttp500response(connection_id, error_message);
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end;
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procedure TCEFServerComponent.SendHttpResponse(connection_id : Integer;
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response_code : Integer;
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const content_type : ustring;
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content_length : int64;
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const extra_headers : ICefStringMultimap);
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begin
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if Initialized then FServer.SendHttpResponse(connection_id, response_code, content_type, content_length, extra_headers);
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end;
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procedure TCEFServerComponent.SendRawData(connection_id: Integer; const data: Pointer; data_size: NativeUInt);
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begin
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if Initialized then FServer.SendRawData(connection_id, data, data_size);
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end;
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procedure TCEFServerComponent.CloseConnection(connection_id: Integer);
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begin
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if Initialized then FServer.CloseConnection(connection_id);
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end;
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procedure TCEFServerComponent.SendWebSocketMessage(connection_id: Integer; const data: Pointer; data_size: NativeUInt);
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begin
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if Initialized then FServer.SendWebSocketMessage(connection_id, data, data_size);
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end;
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{$IFDEF FPC}
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procedure Register;
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begin
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{$I res/tcefservercomponent.lrs}
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RegisterComponents('Chromium', [TCEFServerComponent]);
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end;
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{$ENDIF}
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end.
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