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CEF4Delphi/source/uCEFResponseFilter.pas
Salvador Díaz Fau 769aa4f384 Fixed IME support in OSR mode
- Added lots of conditional compiler directives to build CEF4DElphi in Linux using Lazarus/FPC
- Updated copyright year
2019-01-08 19:15:25 +01:00

166 lines
5.8 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 uCEFResponseFilter;
{$IFDEF FPC}
{$MODE OBJFPC}{$H+}
{$ENDIF}
{$IFNDEF CPUX64}{$ALIGN ON}{$ENDIF}
{$MINENUMSIZE 4}
{$I cef.inc}
interface
uses
uCEFBaseRefCounted, uCEFInterfaces, uCEFTypes;
type
TOnFilterEvent = procedure(Sender: TObject; data_in: Pointer; data_in_size: NativeUInt; var data_in_read: NativeUInt; data_out: Pointer; data_out_size : NativeUInt; var data_out_written: NativeUInt; var aResult : TCefResponseFilterStatus) of object;
TOnInitFilterEvent = procedure(Sender: TObject; var aResult : boolean) of object;
TCefResponseFilterOwn = class(TCefBaseRefCountedOwn, ICefResponseFilter)
protected
function InitFilter: Boolean; virtual; abstract;
function Filter(data_in: Pointer; data_in_size: NativeUInt; var data_in_read: NativeUInt; data_out: Pointer; data_out_size : NativeUInt; var data_out_written: NativeUInt): TCefResponseFilterStatus; virtual; abstract;
public
constructor Create; virtual;
end;
TCustomResponseFilter = class(TCefResponseFilterOwn)
protected
FOnFilter : TOnFilterEvent;
FOnInitFilter : TOnInitFilterEvent;
function InitFilter: Boolean; override;
function Filter(data_in: Pointer; data_in_size: NativeUInt; var data_in_read: NativeUInt; data_out: Pointer; data_out_size : NativeUInt; var data_out_written: NativeUInt): TCefResponseFilterStatus; override;
public
constructor Create; override;
property OnFilter : TOnFilterEvent read FOnFilter write FOnFilter;
property OnInitFilter : TOnInitFilterEvent read FOnInitFilter write FOnInitFilter;
end;
implementation
uses
uCEFMiscFunctions, uCEFLibFunctions;
// TCefResponseFilterOwn
function cef_response_filter_init_filter(self: PCefResponseFilter): Integer; stdcall;
var
TempObject : TObject;
begin
Result := Ord(True);
TempObject := CefGetObject(self);
if (TempObject <> nil) and (TempObject is TCefResponseFilterOwn) then
Result := Ord(TCefResponseFilterOwn(TempObject).InitFilter());
end;
function cef_response_filter_filter( self : PCefResponseFilter;
data_in : Pointer;
data_in_size : NativeUInt;
var data_in_read : NativeUInt;
data_out : Pointer;
data_out_size : NativeUInt;
var data_out_written : NativeUInt): TCefResponseFilterStatus; stdcall;
var
TempObject : TObject;
begin
Result := RESPONSE_FILTER_DONE;
TempObject := CefGetObject(self);
if (TempObject <> nil) and (TempObject is TCefResponseFilterOwn) then
Result := TCefResponseFilterOwn(TempObject).Filter(data_in, data_in_size, data_in_read,
data_out, data_out_size, data_out_written);
end;
constructor TCefResponseFilterOwn.Create;
begin
inherited CreateData(SizeOf(TCefResponseFilter));
with PCefResponseFilter(FData)^ do
begin
init_filter := {$IFDEF FPC}@{$ENDIF}cef_response_filter_init_filter;
filter := {$IFDEF FPC}@{$ENDIF}cef_response_filter_filter;
end;
end;
// TCustomResponseFilter
constructor TCustomResponseFilter.Create;
begin
inherited Create;
FOnFilter := nil;
FOnInitFilter := nil;
end;
function TCustomResponseFilter.InitFilter: Boolean;
begin
Result := True;
if assigned(FOnInitFilter) then FOnInitFilter(self, Result);
end;
function TCustomResponseFilter.Filter( data_in : Pointer;
data_in_size : NativeUInt;
var data_in_read : NativeUInt;
data_out : Pointer;
data_out_size : NativeUInt;
var data_out_written : NativeUInt) : TCefResponseFilterStatus;
begin
Result := RESPONSE_FILTER_DONE;
if assigned(FOnFilter) then
FOnFilter(self,
data_in, data_in_size, data_in_read,
data_out, data_out_size, data_out_written,
Result);
end;
end.