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CEF4Delphi/source/uCEFCompletionCallback.pas

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// ************************************************************************
// ***************************** 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.
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//
// ************************************************************************
// ************ 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 uCEFCompletionCallback;
{$IFDEF FPC}
{$MODE OBJFPC}{$H+}
{$ENDIF}
{$IFNDEF CPUX64}{$ALIGN ON}{$ENDIF}
{$MINENUMSIZE 4}
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{$I cef.inc}
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interface
uses
uCEFBaseRefCounted, uCEFInterfaces, uCEFWaitableEvent;
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type
TCefCompletionCallbackOwn = class(TCefBaseRefCountedOwn, ICefCompletionCallback)
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protected
procedure OnComplete; virtual;
public
constructor Create; virtual;
end;
TCefFastCompletionCallback = class(TCefCompletionCallbackOwn)
protected
FProc: TCefCompletionCallbackProc;
procedure OnComplete; override;
public
constructor Create(const proc: TCefCompletionCallbackProc); reintroduce;
end;
TCefEventCompletionCallback = class(TCefCompletionCallbackOwn)
protected
FEvent : ICefWaitableEvent;
procedure OnComplete; override;
public
constructor Create(const event : ICefWaitableEvent); reintroduce;
destructor Destroy; override;
end;
TCefCustomCompletionCallback = class(TCefCompletionCallbackOwn)
protected
FEvents : Pointer;
public
constructor Create(const aEvents : IChromiumEvents); reintroduce;
destructor Destroy; override;
end;
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implementation
uses
uCEFMiscFunctions, uCEFLibFunctions, uCEFTypes;
procedure cef_completion_callback_on_complete(self: PCefCompletionCallback); stdcall;
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var
TempObject : TObject;
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begin
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TempObject := CefGetObject(self);
if (TempObject <> nil) and (TempObject is TCefCompletionCallbackOwn) then
TCefCompletionCallbackOwn(TempObject).OnComplete;
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end;
// TCefCompletionHandlerOwn
constructor TCefCompletionCallbackOwn.Create;
begin
inherited CreateData(SizeOf(TCefCompletionCallback));
PCefCompletionCallback(FData)^.on_complete := {$IFDEF FPC}@{$ENDIF}cef_completion_callback_on_complete;
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end;
procedure TCefCompletionCallbackOwn.OnComplete;
begin
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//
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end;
// TCefFastCompletionHandler
constructor TCefFastCompletionCallback.Create(const proc: TCefCompletionCallbackProc);
begin
inherited Create;
FProc := proc;
end;
procedure TCefFastCompletionCallback.OnComplete;
begin
FProc();
end;
// TCefEventCompletionCallback
constructor TCefEventCompletionCallback.Create(const event : ICefWaitableEvent);
begin
inherited Create;
FEvent := event;
end;
destructor TCefEventCompletionCallback.Destroy;
begin
FEvent := nil;
inherited Destroy;
end;
procedure TCefEventCompletionCallback.OnComplete;
begin
if (FEvent <> nil) then FEvent.Signal;
end;
// TCefCustomCompletionCallback
constructor TCefCustomCompletionCallback.Create(const aEvents : IChromiumEvents);
begin
inherited Create;
FEvents := Pointer(aEvents);
end;
destructor TCefCustomCompletionCallback.Destroy;
begin
FEvents := nil;
inherited Destroy;
end;
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end.