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CEF4Delphi/source/uCEFDomVisitor.pas
2019-06-16 10:31:13 +02:00

155 lines
4.0 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 uCEFDomVisitor;
{$IFDEF FPC}
{$MODE OBJFPC}{$H+}
{$ENDIF}
{$IFNDEF CPUX64}{$ALIGN ON}{$ENDIF}
{$MINENUMSIZE 4}
{$I cef.inc}
interface
uses
uCEFBaseRefCounted, uCEFInterfaces;
type
TCefDomVisitorOwn = class(TCefBaseRefCountedOwn, ICefDomVisitor)
protected
procedure visit(const document: ICefDomDocument); virtual;
public
constructor Create; virtual;
end;
TCefFastDomVisitor = class(TCefDomVisitorOwn)
protected
FProc : TCefDomVisitorProc;
procedure visit(const document: ICefDomDocument); override;
public
constructor Create(const proc: TCefDomVisitorProc); reintroduce; virtual;
end;
TCefFastDomVisitor2 = class(TCefDomVisitorOwn)
protected
FProc : TCefDomVisitorProc2;
FBrowser : ICefBrowser;
FFrame : ICefFrame;
procedure visit(const document: ICefDomDocument); override;
public
constructor Create(const browser: ICefBrowser; const frame: ICefFrame; const proc: TCefDomVisitorProc2); reintroduce; virtual;
destructor Destroy; override;
end;
implementation
uses
uCEFMiscFunctions, uCEFLibFunctions, uCEFTypes, uCEFDomDocument;
procedure cef_dom_visitor_visite(self: PCefDomVisitor; document: PCefDomDocument); stdcall;
var
TempObject : TObject;
begin
TempObject := CefGetObject(self);
if (TempObject <> nil) and (TempObject is TCefDomVisitorOwn) then
TCefDomVisitorOwn(TempObject).visit(TCefDomDocumentRef.UnWrap(document));
end;
// TCefDomVisitorOwn
constructor TCefDomVisitorOwn.Create;
begin
inherited CreateData(SizeOf(TCefDomVisitor));
PCefDomVisitor(FData)^.visit := {$IFDEF FPC}@{$ENDIF}cef_dom_visitor_visite;
end;
procedure TCefDomVisitorOwn.visit(const document: ICefDomDocument);
begin
end;
// TCefFastDomVisitor
constructor TCefFastDomVisitor.Create(const proc: TCefDomVisitorProc);
begin
inherited Create;
FProc := proc;
end;
procedure TCefFastDomVisitor.visit(const document: ICefDomDocument);
begin
FProc(document);
end;
// TCefFastDomVisitor2
constructor TCefFastDomVisitor2.Create(const browser: ICefBrowser; const frame: ICefFrame; const proc: TCefDomVisitorProc2);
begin
inherited Create;
FBrowser := browser;
FFrame := frame;
FProc := proc;
end;
destructor TCefFastDomVisitor2.Destroy;
begin
FBrowser := nil;
FFrame := nil;
inherited Destroy;
end;
procedure TCefFastDomVisitor2.visit(const document: ICefDomDocument);
begin
FProc(FBrowser, FFrame, document);
end;
end.