mirror of
https://github.com/salvadordf/CEF4Delphi.git
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382 lines
16 KiB
ObjectPascal
382 lines
16 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 © 2023 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 uCEFResourceHandler;
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{$IFDEF FPC}
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{$MODE OBJFPC}{$H+}
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{$ENDIF}
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{$I cef.inc}
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{$IFNDEF TARGET_64BITS}{$ALIGN ON}{$ENDIF}
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{$MINENUMSIZE 4}
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interface
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uses
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uCEFBaseRefCounted, uCEFInterfaces, uCEFTypes;
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type
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TCefResourceHandlerRef = class(TCefBaseRefCountedRef, ICefResourceHandler)
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protected
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function open(const request: ICefRequest; var handle_request: boolean; const callback: ICefCallback): boolean;
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function ProcessRequest(const request: ICefRequest; const callback: ICefCallback): Boolean; // deprecated
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procedure GetResponseHeaders(const response: ICefResponse; out responseLength: Int64; out redirectUrl: ustring);
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function skip(bytes_to_skip: int64; var bytes_skipped: Int64; const callback: ICefResourceSkipCallback): boolean;
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function read(const data_out: Pointer; bytes_to_read: Integer; var bytes_read: Integer; const callback: ICefResourceReadCallback): boolean;
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function ReadResponse(const dataOut: Pointer; bytesToRead: Integer; var bytesRead: Integer; const callback: ICefCallback): Boolean; // deprecated
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procedure Cancel;
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public
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class function UnWrap(data: Pointer): ICefResourceHandler;
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end;
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TCefResourceHandlerOwn = class(TCefBaseRefCountedOwn, ICefResourceHandler)
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protected
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function open(const request: ICefRequest; var handle_request: boolean; const callback: ICefCallback): boolean; virtual;
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function ProcessRequest(const request: ICefRequest; const callback: ICefCallback): Boolean; virtual; // deprecated
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procedure GetResponseHeaders(const response: ICefResponse; out responseLength: Int64; out redirectUrl: ustring); virtual;
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function skip(bytes_to_skip: int64; var bytes_skipped: Int64; const callback: ICefResourceSkipCallback): boolean; virtual;
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function read(const data_out: Pointer; bytes_to_read: Integer; var bytes_read: Integer; const callback: ICefResourceReadCallback): boolean; virtual;
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function ReadResponse(const dataOut: Pointer; bytesToRead: Integer; var bytesRead: Integer; const callback: ICefCallback): Boolean; virtual; // deprecated
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procedure Cancel; virtual;
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public
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constructor Create(const browser: ICefBrowser; const frame: ICefFrame; const schemeName: ustring; const request: ICefRequest); virtual;
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end;
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TCefResourceHandlerClass = class of TCefResourceHandlerOwn;
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implementation
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uses
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uCEFMiscFunctions, uCEFLibFunctions, uCEFCallback, uCEFRequest, uCEFResponse,
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uCEFResourceSkipCallback, uCEFResourceReadCallback;
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// TCefResourceHandlerOwn
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function cef_resource_handler_open(self : PCefResourceHandler;
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request : PCefRequest;
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handle_request : PInteger;
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callback : PCefCallback): Integer; stdcall;
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var
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TempObject : TObject;
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TempHandleRequest : Boolean;
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begin
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Result := Ord(False);
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TempObject := CefGetObject(self);
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TempHandleRequest := False;
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if (TempObject <> nil) and (TempObject is TCefResourceHandlerOwn) then
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Result := Ord(TCefResourceHandlerOwn(TempObject).Open(TCefRequestRef.UnWrap(request),
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TempHandleRequest,
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TCefCallbackRef.UnWrap(callback)));
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handle_request^ := Ord(TempHandleRequest);
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end;
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function cef_resource_handler_process_request(self : PCefResourceHandler;
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request : PCefRequest;
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callback : PCefCallback): Integer; stdcall;
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var
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TempObject : TObject;
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begin
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Result := Ord(False);
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TempObject := CefGetObject(self);
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if (TempObject <> nil) and (TempObject is TCefResourceHandlerOwn) then
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Result := Ord(TCefResourceHandlerOwn(TempObject).ProcessRequest(TCefRequestRef.UnWrap(request),
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TCefCallbackRef.UnWrap(callback)));
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end;
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procedure cef_resource_handler_get_response_headers(self : PCefResourceHandler;
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response : PCefResponse;
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response_length : PInt64;
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redirectUrl : PCefString); stdcall;
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var
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TempRedirect : ustring;
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TempObject : TObject;
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begin
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TempRedirect := '';
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TempObject := CefGetObject(self);
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if (TempObject <> nil) and (TempObject is TCefResourceHandlerOwn) then
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begin
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TCefResourceHandlerOwn(TempObject).GetResponseHeaders(TCefResponseRef.UnWrap(response),
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response_length^,
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TempRedirect);
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CefStringFree(redirectUrl);
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if (redirectUrl <> nil) then redirectUrl^ := CefStringAlloc(TempRedirect);
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end;
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end;
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function cef_resource_handler_skip(self : PCefResourceHandler;
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bytes_to_skip : int64;
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bytes_skipped : PInt64;
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callback : PCefResourceSkipCallback): Integer; stdcall;
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var
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TempObject : TObject;
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TempBytesSkipped : int64;
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begin
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Result := Ord(False);
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TempObject := CefGetObject(self);
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TempBytesSkipped := bytes_skipped^;
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if (TempObject <> nil) and (TempObject is TCefResourceHandlerOwn) then
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Result := Ord(TCefResourceHandlerOwn(TempObject).Skip(bytes_to_skip,
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TempBytesSkipped,
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TCefResourceSkipCallbackRef.UnWrap(callback)));
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bytes_skipped^ := TempBytesSkipped;
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end;
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function cef_resource_handler_read(self : PCefResourceHandler;
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data_out : Pointer;
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bytes_to_read : Integer;
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bytes_read : PInteger;
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callback : PCefResourceReadCallback): Integer; stdcall;
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var
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TempObject : TObject;
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TempBytesRead : integer;
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begin
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Result := Ord(False);
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TempObject := CefGetObject(self);
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TempBytesRead := bytes_read^;
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if (TempObject <> nil) and (TempObject is TCefResourceHandlerOwn) then
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Result := Ord(TCefResourceHandlerOwn(TempObject).Read(data_out,
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bytes_to_read,
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TempBytesRead,
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TCefResourceReadCallbackRef.UnWrap(callback)));
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bytes_read^ := TempBytesRead;
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end;
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function cef_resource_handler_read_response(self : PCefResourceHandler;
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data_out : Pointer;
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bytes_to_read : Integer;
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bytes_read : PInteger;
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callback : PCefCallback): Integer; stdcall;
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var
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TempObject : TObject;
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TempBytesRead : integer;
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begin
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Result := Ord(False);
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TempObject := CefGetObject(self);
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TempBytesRead := bytes_read^;
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if (TempObject <> nil) and (TempObject is TCefResourceHandlerOwn) then
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Result := Ord(TCefResourceHandlerOwn(TempObject).ReadResponse(data_out,
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bytes_to_read,
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TempBytesRead,
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TCefCallbackRef.UnWrap(callback)));
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bytes_read^ := TempBytesRead;
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end;
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procedure cef_resource_handler_cancel(self: PCefResourceHandler); stdcall;
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var
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TempObject : TObject;
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begin
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TempObject := CefGetObject(self);
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if (TempObject <> nil) and (TempObject is TCefResourceHandlerOwn) then
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TCefResourceHandlerOwn(TempObject).Cancel;
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end;
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procedure TCefResourceHandlerOwn.Cancel;
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begin
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//
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end;
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constructor TCefResourceHandlerOwn.Create(const browser : ICefBrowser;
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const frame : ICefFrame;
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const schemeName : ustring;
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const request : ICefRequest);
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begin
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inherited CreateData(SizeOf(TCefResourceHandler));
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with PCefResourceHandler(FData)^ do
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begin
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open := {$IFDEF FPC}@{$ENDIF}cef_resource_handler_open;
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process_request := {$IFDEF FPC}@{$ENDIF}cef_resource_handler_process_request;
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get_response_headers := {$IFDEF FPC}@{$ENDIF}cef_resource_handler_get_response_headers;
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skip := {$IFDEF FPC}@{$ENDIF}cef_resource_handler_skip;
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read := {$IFDEF FPC}@{$ENDIF}cef_resource_handler_read;
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read_response := {$IFDEF FPC}@{$ENDIF}cef_resource_handler_read_response;
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cancel := {$IFDEF FPC}@{$ENDIF}cef_resource_handler_cancel;
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end;
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end;
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procedure TCefResourceHandlerOwn.GetResponseHeaders(const response : ICefResponse;
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out responseLength : Int64;
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out redirectUrl : ustring);
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begin
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//
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end;
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function TCefResourceHandlerOwn.open(const request : ICefRequest;
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var handle_request : boolean;
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const callback : ICefCallback): boolean;
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begin
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Result := False;
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handle_request := False;
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end;
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function TCefResourceHandlerOwn.skip( bytes_to_skip : int64;
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var bytes_skipped : Int64;
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const callback : ICefResourceSkipCallback): boolean;
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begin
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Result := False;
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end;
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function TCefResourceHandlerOwn.read(const data_out : Pointer;
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bytes_to_read : Integer;
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var bytes_read : Integer;
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const callback : ICefResourceReadCallback): boolean;
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begin
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bytes_read := -1;
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Result := False;
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end;
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function TCefResourceHandlerOwn.ProcessRequest(const request : ICefRequest;
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const callback : ICefCallback): Boolean;
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begin
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Result := False;
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end;
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function TCefResourceHandlerOwn.ReadResponse(const dataOut : Pointer;
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bytesToRead : Integer;
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var bytesRead : Integer;
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const callback : ICefCallback): Boolean;
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begin
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Result := False;
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end;
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// TCefResourceHandlerRef
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class function TCefResourceHandlerRef.UnWrap(data: Pointer): ICefResourceHandler;
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begin
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if (data <> nil) then
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Result := Create(data) as ICefResourceHandler
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else
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Result := nil;
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end;
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function TCefResourceHandlerRef.open(const request : ICefRequest;
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var handle_request : boolean;
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const callback : ICefCallback): boolean;
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var
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TempHandleRequest : integer;
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begin
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TempHandleRequest := Ord(False);
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Result := PCefResourceHandler(FData)^.open(PCefResourceHandler(FData),
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CefGetData(request),
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@TempHandleRequest,
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CefGetData(callback)) <> 0;
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handle_request := TempHandleRequest <> 0;
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end;
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function TCefResourceHandlerRef.ProcessRequest(const request : ICefRequest;
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const callback : ICefCallback): boolean;
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begin
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Result := PCefResourceHandler(FData)^.process_request(PCefResourceHandler(FData),
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CefGetData(request),
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CefGetData(callback)) <> 0;
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end;
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procedure TCefResourceHandlerRef.GetResponseHeaders(const response : ICefResponse;
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out responseLength : Int64;
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out redirectUrl : ustring);
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var
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TempRedirectURL : TCefString;
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begin
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TempRedirectURL := CefString(redirectUrl);
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PCefResourceHandler(FData)^.get_response_headers(PCefResourceHandler(FData),
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CefGetData(response),
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@responseLength,
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@TempRedirectURL);
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redirectUrl := CefString(@TempRedirectURL);
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end;
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function TCefResourceHandlerRef.skip( bytes_to_skip : int64;
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var bytes_skipped : Int64;
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const callback : ICefResourceSkipCallback): boolean;
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begin
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Result := PCefResourceHandler(FData)^.skip(PCefResourceHandler(FData),
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bytes_to_skip,
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@bytes_skipped,
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CefGetData(callback)) <> 0;
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end;
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function TCefResourceHandlerRef.read(const data_out : Pointer;
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bytes_to_read : Integer;
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var bytes_read : Integer;
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const callback : ICefResourceReadCallback): boolean;
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begin
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Result := PCefResourceHandler(FData)^.read(PCefResourceHandler(FData),
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data_out,
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bytes_to_read,
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@bytes_read,
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CefGetData(callback)) <> 0;
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end;
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function TCefResourceHandlerRef.ReadResponse(const dataOut : Pointer;
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bytesToRead : Integer;
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var bytesRead : Integer;
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const callback : ICefCallback): boolean;
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begin
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Result := PCefResourceHandler(FData)^.read_response(PCefResourceHandler(FData),
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dataOut,
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bytesToRead,
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@bytesRead,
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CefGetData(callback)) <> 0;
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end;
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procedure TCefResourceHandlerRef.Cancel;
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begin
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PCefResourceHandler(FData)^.Cancel(PCefResourceHandler(FData));
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end;
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end.
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