mirror of
https://github.com/salvadordf/CEF4Delphi.git
synced 2024-11-16 00:05:55 +01:00
380 lines
16 KiB
ObjectPascal
380 lines
16 KiB
ObjectPascal
// ************************************************************************
|
|
// ***************************** CEF4Delphi *******************************
|
|
// ************************************************************************
|
|
//
|
|
// CEF4Delphi is based on DCEF3 which uses CEF3 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
|
|
//
|
|
// Copyright © 2019 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 uCEFResourceHandler;
|
|
|
|
{$IFDEF FPC}
|
|
{$MODE OBJFPC}{$H+}
|
|
{$ENDIF}
|
|
|
|
{$IFNDEF CPUX64}{$ALIGN ON}{$ENDIF}
|
|
{$MINENUMSIZE 4}
|
|
|
|
{$I cef.inc}
|
|
|
|
interface
|
|
|
|
uses
|
|
uCEFBaseRefCounted, uCEFInterfaces, uCEFTypes;
|
|
|
|
type
|
|
TCefResourceHandlerRef = class(TCefBaseRefCountedRef, ICefResourceHandler)
|
|
protected
|
|
function open(const request: ICefRequest; var handle_request: boolean; const callback: ICefCallback): boolean;
|
|
function ProcessRequest(const request: ICefRequest; const callback: ICefCallback): Boolean; // deprecated
|
|
procedure GetResponseHeaders(const response: ICefResponse; out responseLength: Int64; out redirectUrl: ustring);
|
|
function skip(bytes_to_skip: int64; var bytes_skipped: Int64; const callback: ICefResourceSkipCallback): boolean;
|
|
function read(const data_out: Pointer; bytes_to_read: Integer; var bytes_read: Integer; const callback: ICefResourceReadCallback): boolean;
|
|
function ReadResponse(const dataOut: Pointer; bytesToRead: Integer; var bytesRead: Integer; const callback: ICefCallback): Boolean; // deprecated
|
|
procedure Cancel;
|
|
|
|
public
|
|
class function UnWrap(data: Pointer): ICefResourceHandler;
|
|
end;
|
|
|
|
TCefResourceHandlerOwn = class(TCefBaseRefCountedOwn, ICefResourceHandler)
|
|
protected
|
|
function open(const request: ICefRequest; var handle_request: boolean; const callback: ICefCallback): boolean; virtual;
|
|
function ProcessRequest(const request: ICefRequest; const callback: ICefCallback): Boolean; virtual; // deprecated
|
|
procedure GetResponseHeaders(const response: ICefResponse; out responseLength: Int64; out redirectUrl: ustring); virtual;
|
|
function skip(bytes_to_skip: int64; var bytes_skipped: Int64; const callback: ICefResourceSkipCallback): boolean; virtual;
|
|
function read(const data_out: Pointer; bytes_to_read: Integer; var bytes_read: Integer; const callback: ICefResourceReadCallback): boolean; virtual;
|
|
function ReadResponse(const dataOut: Pointer; bytesToRead: Integer; var bytesRead: Integer; const callback: ICefCallback): Boolean; virtual; // deprecated
|
|
procedure Cancel; virtual;
|
|
|
|
public
|
|
constructor Create(const browser: ICefBrowser; const frame: ICefFrame; const schemeName: ustring; const request: ICefRequest); virtual;
|
|
end;
|
|
|
|
TCefResourceHandlerClass = class of TCefResourceHandlerOwn;
|
|
|
|
implementation
|
|
|
|
uses
|
|
uCEFMiscFunctions, uCEFLibFunctions, uCEFCallback, uCEFRequest, uCEFResponse,
|
|
uCEFResourceSkipCallback, uCEFResourceReadCallback;
|
|
|
|
|
|
// TCefResourceHandlerOwn
|
|
|
|
function cef_resource_handler_open(self : PCefResourceHandler;
|
|
request : PCefRequest;
|
|
handle_request : PInteger;
|
|
callback : PCefCallback): Integer; stdcall;
|
|
var
|
|
TempObject : TObject;
|
|
TempHandleRequest : Boolean;
|
|
begin
|
|
Result := Ord(False);
|
|
TempObject := CefGetObject(self);
|
|
TempHandleRequest := False;
|
|
|
|
if (TempObject <> nil) and (TempObject is TCefResourceHandlerOwn) then
|
|
Result := Ord(TCefResourceHandlerOwn(TempObject).Open(TCefRequestRef.UnWrap(request),
|
|
TempHandleRequest,
|
|
TCefCallbackRef.UnWrap(callback)));
|
|
|
|
handle_request^ := Ord(TempHandleRequest);
|
|
end;
|
|
|
|
function cef_resource_handler_process_request(self : PCefResourceHandler;
|
|
request : PCefRequest;
|
|
callback : PCefCallback): Integer; stdcall;
|
|
var
|
|
TempObject : TObject;
|
|
begin
|
|
Result := Ord(False);
|
|
TempObject := CefGetObject(self);
|
|
|
|
if (TempObject <> nil) and (TempObject is TCefResourceHandlerOwn) then
|
|
Result := Ord(TCefResourceHandlerOwn(TempObject).ProcessRequest(TCefRequestRef.UnWrap(request),
|
|
TCefCallbackRef.UnWrap(callback)));
|
|
end;
|
|
|
|
procedure cef_resource_handler_get_response_headers(self : PCefResourceHandler;
|
|
response : PCefResponse;
|
|
response_length : PInt64;
|
|
redirectUrl : PCefString); stdcall;
|
|
var
|
|
TempRedirect : ustring;
|
|
TempObject : TObject;
|
|
begin
|
|
TempRedirect := '';
|
|
TempObject := CefGetObject(self);
|
|
|
|
if (TempObject <> nil) and (TempObject is TCefResourceHandlerOwn) then
|
|
TCefResourceHandlerOwn(TempObject).GetResponseHeaders(TCefResponseRef.UnWrap(response),
|
|
response_length^,
|
|
TempRedirect);
|
|
|
|
if (TempRedirect <> '') then CefStringSet(redirectUrl, TempRedirect);
|
|
end;
|
|
|
|
function cef_resource_handler_skip(self : PCefResourceHandler;
|
|
bytes_to_skip : int64;
|
|
bytes_skipped : PInt64;
|
|
callback : PCefResourceSkipCallback): Integer; stdcall;
|
|
var
|
|
TempObject : TObject;
|
|
TempBytesSkipped : int64;
|
|
begin
|
|
Result := Ord(False);
|
|
TempObject := CefGetObject(self);
|
|
TempBytesSkipped := bytes_skipped^;
|
|
|
|
if (TempObject <> nil) and (TempObject is TCefResourceHandlerOwn) then
|
|
Result := Ord(TCefResourceHandlerOwn(TempObject).Skip(bytes_to_skip,
|
|
TempBytesSkipped,
|
|
TCefResourceSkipCallbackRef.UnWrap(callback)));
|
|
bytes_skipped^ := TempBytesSkipped;
|
|
end;
|
|
|
|
function cef_resource_handler_read(self : PCefResourceHandler;
|
|
data_out : Pointer;
|
|
bytes_to_read : Integer;
|
|
bytes_read : PInteger;
|
|
callback : PCefResourceReadCallback): Integer; stdcall;
|
|
var
|
|
|
|
TempObject : TObject;
|
|
TempBytesRead : integer;
|
|
begin
|
|
Result := Ord(False);
|
|
TempObject := CefGetObject(self);
|
|
TempBytesRead := bytes_read^;
|
|
|
|
if (TempObject <> nil) and (TempObject is TCefResourceHandlerOwn) then
|
|
Result := Ord(TCefResourceHandlerOwn(TempObject).Read(data_out,
|
|
bytes_to_read,
|
|
TempBytesRead,
|
|
TCefResourceReadCallbackRef.UnWrap(callback)));
|
|
|
|
|
|
bytes_read^ := TempBytesRead;
|
|
|
|
end;
|
|
|
|
function cef_resource_handler_read_response(self : PCefResourceHandler;
|
|
data_out : Pointer;
|
|
bytes_to_read : Integer;
|
|
bytes_read : PInteger;
|
|
callback : PCefCallback): Integer; stdcall;
|
|
var
|
|
TempObject : TObject;
|
|
TempBytesRead : integer;
|
|
begin
|
|
Result := Ord(False);
|
|
TempObject := CefGetObject(self);
|
|
TempBytesRead := bytes_read^;
|
|
|
|
if (TempObject <> nil) and (TempObject is TCefResourceHandlerOwn) then
|
|
Result := Ord(TCefResourceHandlerOwn(TempObject).ReadResponse(data_out,
|
|
bytes_to_read,
|
|
TempBytesRead,
|
|
TCefCallbackRef.UnWrap(callback)));
|
|
|
|
bytes_read^ := TempBytesRead;
|
|
end;
|
|
|
|
procedure cef_resource_handler_cancel(self: PCefResourceHandler); stdcall;
|
|
var
|
|
TempObject : TObject;
|
|
begin
|
|
TempObject := CefGetObject(self);
|
|
|
|
if (TempObject <> nil) and (TempObject is TCefResourceHandlerOwn) then
|
|
TCefResourceHandlerOwn(TempObject).Cancel;
|
|
end;
|
|
|
|
procedure TCefResourceHandlerOwn.Cancel;
|
|
begin
|
|
//
|
|
end;
|
|
|
|
constructor TCefResourceHandlerOwn.Create(const browser : ICefBrowser;
|
|
const frame : ICefFrame;
|
|
const schemeName : ustring;
|
|
const request : ICefRequest);
|
|
begin
|
|
inherited CreateData(SizeOf(TCefResourceHandler));
|
|
|
|
with PCefResourceHandler(FData)^ do
|
|
begin
|
|
open := {$IFDEF FPC}@{$ENDIF}cef_resource_handler_open;
|
|
process_request := {$IFDEF FPC}@{$ENDIF}cef_resource_handler_process_request;
|
|
get_response_headers := {$IFDEF FPC}@{$ENDIF}cef_resource_handler_get_response_headers;
|
|
skip := {$IFDEF FPC}@{$ENDIF}cef_resource_handler_skip;
|
|
read := {$IFDEF FPC}@{$ENDIF}cef_resource_handler_read;
|
|
read_response := {$IFDEF FPC}@{$ENDIF}cef_resource_handler_read_response;
|
|
cancel := {$IFDEF FPC}@{$ENDIF}cef_resource_handler_cancel;
|
|
end;
|
|
end;
|
|
|
|
procedure TCefResourceHandlerOwn.GetResponseHeaders(const response : ICefResponse;
|
|
out responseLength : Int64;
|
|
out redirectUrl : ustring);
|
|
begin
|
|
//
|
|
end;
|
|
|
|
function TCefResourceHandlerOwn.open(const request : ICefRequest;
|
|
var handle_request : boolean;
|
|
const callback : ICefCallback): boolean;
|
|
begin
|
|
Result := False;
|
|
handle_request := False;
|
|
end;
|
|
|
|
function TCefResourceHandlerOwn.skip( bytes_to_skip : int64;
|
|
var bytes_skipped : Int64;
|
|
const callback : ICefResourceSkipCallback): boolean;
|
|
begin
|
|
Result := False;
|
|
end;
|
|
|
|
function TCefResourceHandlerOwn.read(const data_out : Pointer;
|
|
bytes_to_read : Integer;
|
|
var bytes_read : Integer;
|
|
const callback : ICefResourceReadCallback): boolean;
|
|
begin
|
|
bytes_read := -1;
|
|
Result := False;
|
|
end;
|
|
|
|
function TCefResourceHandlerOwn.ProcessRequest(const request : ICefRequest;
|
|
const callback : ICefCallback): Boolean;
|
|
begin
|
|
Result := False;
|
|
end;
|
|
|
|
function TCefResourceHandlerOwn.ReadResponse(const dataOut : Pointer;
|
|
bytesToRead : Integer;
|
|
var bytesRead : Integer;
|
|
const callback : ICefCallback): Boolean;
|
|
begin
|
|
Result := False;
|
|
end;
|
|
|
|
|
|
// TCefResourceHandlerRef
|
|
|
|
class function TCefResourceHandlerRef.UnWrap(data: Pointer): ICefResourceHandler;
|
|
begin
|
|
if (data <> nil) then
|
|
Result := Create(data) as ICefResourceHandler
|
|
else
|
|
Result := nil;
|
|
end;
|
|
|
|
function TCefResourceHandlerRef.open(const request : ICefRequest;
|
|
var handle_request : boolean;
|
|
const callback : ICefCallback): boolean;
|
|
var
|
|
TempHandleRequest : integer;
|
|
begin
|
|
TempHandleRequest := Ord(False);
|
|
Result := PCefResourceHandler(FData)^.open(PCefResourceHandler(FData),
|
|
CefGetData(request),
|
|
@TempHandleRequest,
|
|
CefGetData(callback)) <> 0;
|
|
handle_request := TempHandleRequest <> 0;
|
|
end;
|
|
|
|
function TCefResourceHandlerRef.ProcessRequest(const request : ICefRequest;
|
|
const callback : ICefCallback): boolean;
|
|
begin
|
|
Result := PCefResourceHandler(FData)^.process_request(PCefResourceHandler(FData),
|
|
CefGetData(request),
|
|
CefGetData(callback)) <> 0;
|
|
end;
|
|
|
|
procedure TCefResourceHandlerRef.GetResponseHeaders(const response : ICefResponse;
|
|
out responseLength : Int64;
|
|
out redirectUrl : ustring);
|
|
var
|
|
TempRedirectURL : TCefString;
|
|
begin
|
|
TempRedirectURL := CefString(redirectUrl);
|
|
PCefResourceHandler(FData)^.get_response_headers(PCefResourceHandler(FData),
|
|
CefGetData(response),
|
|
@responseLength,
|
|
@TempRedirectURL);
|
|
redirectUrl := CefString(@TempRedirectURL);
|
|
end;
|
|
|
|
function TCefResourceHandlerRef.skip( bytes_to_skip : int64;
|
|
var bytes_skipped : Int64;
|
|
const callback : ICefResourceSkipCallback): boolean;
|
|
begin
|
|
Result := PCefResourceHandler(FData)^.skip(PCefResourceHandler(FData),
|
|
bytes_to_skip,
|
|
@bytes_skipped,
|
|
CefGetData(callback)) <> 0;
|
|
end;
|
|
|
|
function TCefResourceHandlerRef.read(const data_out : Pointer;
|
|
bytes_to_read : Integer;
|
|
var bytes_read : Integer;
|
|
const callback : ICefResourceReadCallback): boolean;
|
|
begin
|
|
Result := PCefResourceHandler(FData)^.read(PCefResourceHandler(FData),
|
|
data_out,
|
|
bytes_to_read,
|
|
@bytes_read,
|
|
CefGetData(callback)) <> 0;
|
|
end;
|
|
|
|
function TCefResourceHandlerRef.ReadResponse(const dataOut : Pointer;
|
|
bytesToRead : Integer;
|
|
var bytesRead : Integer;
|
|
const callback : ICefCallback): boolean;
|
|
begin
|
|
Result := PCefResourceHandler(FData)^.read_response(PCefResourceHandler(FData),
|
|
dataOut,
|
|
bytesToRead,
|
|
@bytesRead,
|
|
CefGetData(callback)) <> 0;
|
|
end;
|
|
|
|
procedure TCefResourceHandlerRef.Cancel;
|
|
begin
|
|
PCefResourceHandler(FData)^.Cancel(PCefResourceHandler(FData));
|
|
end;
|
|
|
|
|
|
end.
|