david
111d889bc6
git-svn-id: https://192.168.0.254/svn/Componentes.Terceros.DevExpressVCL@32 05c56307-c608-d34a-929d-697000501d7a
689 lines
21 KiB
ObjectPascal
689 lines
21 KiB
ObjectPascal
{*******************************************************************}
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{ }
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{ ExpressWeb Framework by Developer Express }
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{ Designer Module }
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{ }
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{ Copyright (c) 2000-2009 Developer Express Inc. }
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{ ALL RIGHTS RESERVED }
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{ }
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{ The entire contents of this file is protected by U.S. and }
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{ International Copyright Laws. Unauthorized reproduction, }
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{ reverse-engineering, and distribution of all or any portion of }
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{ the code contained in this file is strictly prohibited and may }
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{ result in severe civil and criminal penalties and will be }
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{ prosecuted to the maximum extent possible under the law. }
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{ }
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{ RESTRICTIONS }
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{ }
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{ THIS SOURCE CODE AND ALL RESULTING INTERMEDIATE FILES }
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{ (DCU, OBJ, DLL, ETC.) ARE CONFIDENTIAL AND PROPRIETARY TRADE }
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{ SECRETS OF DEVELOPER EXPRESS INC. THE REGISTERED DEVELOPER IS }
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{ LICENSED TO DISTRIBUTE THE EXPRESSWEB FRAMEWORK AND ALL }
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{ ACCOMPANYING VCL CLASSES AS PART OF AN EXECUTABLE WEB }
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{ APPLICATION ONLY. }
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{ }
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{ THE SOURCE CODE CONTAINED WITHIN THIS FILE AND ALL RELATED }
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{ FILES OR ANY PORTION OF ITS CONTENTS SHALL AT NO TIME BE }
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{ COPIED, TRANSFERRED, SOLD, DISTRIBUTED, OR OTHERWISE MADE }
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{ AVAILABLE TO OTHER INDIVIDUALS WITHOUT EXPRESS WRITTEN CONSENT }
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{ AND PERMISSION FROM DEVELOPER EXPRESS INC. }
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{ }
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{ CONSULT THE END USER LICENSE AGREEMENT FOR INFORMATION ON }
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{ ADDITIONAL RESTRICTIONS. }
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{ }
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{*******************************************************************}
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unit cxWebDsgnWebContext;
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interface
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{$I cxVer.inc}
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uses SysUtils, Classes, DesignIntf,
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{$IFDEF VCL}
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Windows;
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{$ELSE}
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Qt;
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{$ENDIF}
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function cxGetDesignWebContent(ADesigner: IDesigner): string;
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implementation
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uses
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TypInfo, HTTPApp, HTTPProd, WebCntxt,
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cxWebIntf, cxWebSess, cxWebDsgnBaseModules, cxWebDsgnHTMLSource,
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cxWebDsgnUtils, cxWebFileCacheManager, cxWebPathConst;
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var
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FWebContext: TAbstractWebContext;
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function cxGetWebContext: TAbstractWebContext;
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begin
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Result := FWebContext;
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end;
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procedure cxSetWebContext(AWebContext: TAbstractWebContext);
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begin
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FWebContext := AWebContext;
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end;
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type
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TcxWebDesignPageInfo = class(TAbstractWebPageInfo)
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private
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FPageModule: TComponent;
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FDesigner: IDesigner;
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protected
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constructor Create(const APageModule: TComponent; ADesigner: IDesigner);
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function GetPageFile: string; override;
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function GetPageName: string; override;
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end;
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constructor TcxWebDesignPageInfo.Create(const APageModule: TComponent; ADesigner: IDesigner);
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begin
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FPageModule := APageModule;
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FDesigner := ADesigner;
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end;
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function TcxWebDesignPageInfo.GetPageFile: string;
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var
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AHTMLSource: TcxWebDsgnHTMLSource;
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begin
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AHTMLSource := TcxWebDsgnHTMLSource.Create('', FDesigner);
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if AHTMLSource.HasHTMLFile then
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Result := FPageModule.Name + '.html'
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else Result := '';
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AHTMLSource.Free;
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end;
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function TcxWebDesignPageInfo.GetPageName: string;
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begin
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Result := FPageModule.Name;
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end;
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type
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TcxWebDesignModuleFactory = class(TAbstractWebPageModuleFactory)
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private
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FPageModule: TComponent;
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FPageInfo: TcxWebDesignPageInfo;
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protected
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function GetModuleName: string; override;
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function GetIsAppModule: Boolean; override;
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function GetCreateMode: TWebModuleCreateMode; override;
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function GetCacheMode: TWebModuleCacheMode; override;
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function GetComponentClass: TComponentClass; override;
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function GetWebPageInfo: TAbstractWebPageInfo; override;
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public
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constructor Create(APageModule: TComponent; ADesigner: IDesigner);
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destructor Destroy; override;
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function GetModule: TComponent; override;
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procedure PreventDestruction; override;
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end;
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constructor TcxWebDesignModuleFactory.Create(APageModule: TComponent; ADesigner: IDesigner);
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begin
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FPageModule := APageModule;
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FPageInfo := TcxWebDesignPageInfo.Create(APageModule, ADesigner);
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FPageInfo.SetFactory(self);
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end;
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destructor TcxWebDesignModuleFactory.Destroy;
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begin
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FPageInfo.Free;
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inherited Destroy;
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end;
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function TcxWebDesignModuleFactory.GetModule: TComponent;
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begin
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Result := FPageModule;
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end;
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procedure TcxWebDesignModuleFactory.PreventDestruction;
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begin
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end;
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function TcxWebDesignModuleFactory.GetModuleName: string;
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begin
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Result := FPageModule.ClassName;
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end;
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function TcxWebDesignModuleFactory.GetIsAppModule: Boolean;
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begin
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Result := False;
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end;
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function TcxWebDesignModuleFactory.GetCreateMode: TWebModuleCreateMode;
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begin
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Result := crOnDemand;
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end;
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function TcxWebDesignModuleFactory.GetCacheMode: TWebModuleCacheMode;
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begin
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Result := caDestroy;
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end;
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function TcxWebDesignModuleFactory.GetComponentClass: TComponentClass;
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begin
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Result := TComponentClass(FPageModule.ClassInfo)
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end;
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function TcxWebDesignModuleFactory.GetWebPageInfo: TAbstractWebPageInfo;
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begin
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Result := FPageInfo;
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end;
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type
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TcxWebDesignModuleList = class(TAbstractWebModuleList)
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private
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FPageModule: TComponent;
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FModuleFactory: TcxWebDesignModuleFactory;
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protected
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function GetItem(I: Integer): TComponent; override;
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function GetItemCount: Integer; override;
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function GetOnModuleAdded: TModuleAddedProc; override;
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function GetFactoryCount: Integer; override;
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function GetFactory(I: Integer): TAbstractWebModuleFactory; override;
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procedure SetOnModuleAdded(AProc: TModuleAddedProc); override;
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public
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constructor Create(const APageModule: TComponent; ADesigner: IDesigner);
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destructor Destroy; override;
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function FindModuleClass(AClass: TComponentClass): TComponent; override;
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function FindModuleName(const AName: string): TComponent; override;
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function AddModuleClass(AClass: TComponentClass): TComponent; override;
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function AddModuleName(const AName: string): TComponent; override;
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end;
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constructor TcxWebDesignModuleList.Create(const APageModule: TComponent; ADesigner: IDesigner);
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begin
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FPageModule := APageModule;
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FModuleFactory := TcxWebDesignModuleFactory.Create(APageModule, ADesigner);
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end;
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destructor TcxWebDesignModuleList.Destroy;
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begin
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FModuleFactory.Free;
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inherited Destroy;
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end;
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function TcxWebDesignModuleList.FindModuleClass(AClass: TComponentClass): TComponent;
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begin
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if AClass = TComponentClass(FPageModule.ClassType) then
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Result := FPageModule
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else Result := nil;
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end;
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function TcxWebDesignModuleList.FindModuleName(const AName: string): TComponent;
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begin
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if CompareText(AName, FPageModule.Name) = 0 then
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Result := FPageModule
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else Result := nil;
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end;
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function TcxWebDesignModuleList.AddModuleClass(AClass: TComponentClass): TComponent;
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begin
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Result := nil;
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end;
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function TcxWebDesignModuleList.AddModuleName(const AName: string): TComponent;
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begin
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Result := nil;
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end;
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function TcxWebDesignModuleList.GetItem(I: Integer): TComponent;
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begin
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if I = 0 then
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Result := FPageModule
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else Result := nil;
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end;
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function TcxWebDesignModuleList.GetItemCount: Integer;
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begin
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Result := 1;
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end;
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function TcxWebDesignModuleList.GetOnModuleAdded: TModuleAddedProc;
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begin
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end;
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function TcxWebDesignModuleList.GetFactoryCount: Integer;
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begin
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Result := 1;
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end;
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function TcxWebDesignModuleList.GetFactory(I: Integer): TAbstractWebModuleFactory;
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begin
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if I = 0 then
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Result := FModuleFactory
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else Result := nil;
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end;
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procedure TcxWebDesignModuleList.SetOnModuleAdded(AProc: TModuleAddedProc);
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begin
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end;
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type
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TcxWebDesignRequest = class(TWebRequest)
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protected
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function GetStringVariable(Index: Integer): string; override;
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function GetDateVariable(Index: Integer): TDateTime; override;
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function GetIntegerVariable(Index: Integer): Integer; override;
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function GetInternalPathInfo: string; override;
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function GetInternalScriptName: string; override;
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public
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function GetFieldByName(const Name: string): string; override;
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function ReadClient(var Buffer; Count: Integer): Integer; override;
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function ReadString(Count: Integer): string; override;
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function TranslateURI(const URI: string): string; override;
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function WriteClient(var Buffer; Count: Integer): Integer; override;
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function WriteString(const AString: string): Boolean; override;
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function WriteHeaders(StatusCode: Integer; const StatusString, Headers: string): Boolean; override;
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end;
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function TcxWebDesignRequest.GetFieldByName(const Name: string): string;
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begin
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Result := '';
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end;
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function TcxWebDesignRequest.ReadClient(var Buffer; Count: Integer): Integer;
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begin
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Result := 0;
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end;
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function TcxWebDesignRequest.ReadString(Count: Integer): string;
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begin
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Result := '';
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end;
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function TcxWebDesignRequest.TranslateURI(const URI: string): string;
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begin
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Result := '';
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end;
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function TcxWebDesignRequest.WriteClient(var Buffer; Count: Integer): Integer;
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begin
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Result := 0;
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end;
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function TcxWebDesignRequest.WriteString(const AString: string): Boolean;
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begin
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Result := False;
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end;
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function TcxWebDesignRequest.WriteHeaders(StatusCode: Integer; const StatusString, Headers: string): Boolean;
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begin
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Result := False;
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end;
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function TcxWebDesignRequest.GetStringVariable(Index: Integer): string;
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begin
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Result := '';
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end;
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function TcxWebDesignRequest.GetDateVariable(Index: Integer): TDateTime;
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begin
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Result := Date;
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end;
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function TcxWebDesignRequest.GetIntegerVariable(Index: Integer): Integer;
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begin
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Result := 0;
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end;
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function TcxWebDesignRequest.GetInternalPathInfo: string;
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begin
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Result := '';
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end;
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function TcxWebDesignRequest.GetInternalScriptName: string;
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begin
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Result := '';
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end;
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type
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TcxWebDesignResponse = class(TWebResponse)
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private
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FContent: string;
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protected
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function GetContent: string; override;
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function GetDateVariable(Index: Integer): TDateTime; override;
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function GetIntegerVariable(Index: Integer): Integer; override;
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function GetLogMessage: string; override;
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function GetStatusCode: Integer; override;
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function GetStringVariable(Index: Integer): string; override;
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procedure SetContent(const Value: string); override;
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procedure SetDateVariable(Index: Integer; const Value: TDateTime); override;
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procedure SetIntegerVariable(Index: Integer; Value: Integer); override;
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procedure SetLogMessage(const Value: string); override;
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procedure SetStatusCode(Value: Integer); override;
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procedure SetStringVariable(Index: Integer; const Value: string); override;
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public
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procedure SendResponse; override;
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procedure SendRedirect(const URI: string); override;
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procedure SendStream(AStream: TStream); override;
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function Sent: Boolean; override;
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end;
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procedure TcxWebDesignResponse.SendResponse;
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begin
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end;
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procedure TcxWebDesignResponse.SendRedirect(const URI: string);
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begin
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end;
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procedure TcxWebDesignResponse.SendStream(AStream: TStream);
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begin
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end;
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function TcxWebDesignResponse.Sent: Boolean;
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begin
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Result := False;
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end;
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function TcxWebDesignResponse.GetContent: string;
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begin
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Result := FContent;
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end;
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function TcxWebDesignResponse.GetDateVariable(Index: Integer): TDateTime;
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begin
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Result := Date;
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end;
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function TcxWebDesignResponse.GetIntegerVariable(Index: Integer): Integer;
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begin
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Result := 0;
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end;
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function TcxWebDesignResponse.GetLogMessage: string;
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begin
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Result := '';
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end;
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function TcxWebDesignResponse.GetStatusCode: Integer;
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begin
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Result := 0;
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end;
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function TcxWebDesignResponse.GetStringVariable(Index: Integer): string;
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begin
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Result := '';
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end;
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procedure TcxWebDesignResponse.SetContent(const Value: string);
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begin
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FContent := Value;
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end;
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procedure TcxWebDesignResponse.SetDateVariable(Index: Integer; const Value: TDateTime);
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begin
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end;
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procedure TcxWebDesignResponse.SetIntegerVariable(Index: Integer; Value: Integer);
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begin
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end;
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procedure TcxWebDesignResponse.SetLogMessage(const Value: string);
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begin
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end;
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procedure TcxWebDesignResponse.SetStatusCode(Value: Integer);
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begin
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end;
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procedure TcxWebDesignResponse.SetStringVariable(Index: Integer; const Value: string);
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begin
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end;
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type
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TcxWebDesignerFileManager = class(TInterfacedObject, IDesignerFileManager)
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private
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FRoot: TComponent;
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FDesigner: IDesigner;
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function GetGlobalPath: string;
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function GetJSScriptPath: string;
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function GetImagePath: string;
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protected
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function QualifyFileName(const AFileName: string): string;
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function GetStream(const AFileName: string; var AOwned: Boolean): TStream;
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constructor Create(ARoot: TComponent; ADesigner: IDesigner);
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end;
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constructor TcxWebDesignerFileManager.Create(ARoot: TComponent; ADesigner: IDesigner);
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begin
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FRoot := ARoot;
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FDesigner := ADesigner;
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end;
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function TcxWebDesignerFileManager.GetGlobalPath: string;
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begin
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Result := ExcludeTrailingPathDelimiter(ExtractFilePath(cxGetDesignerApplicationFileName));
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if ExtractFileName(Result) = 'Lib' then
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Result := ExtractFilePath(Result) // old installation
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else
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Result := ExtractFilePath(ExcludeTrailingPathDelimiter(ExtractFilePath(Result))); // new installation
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end;
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function TcxWebDesignerFileManager.GetJSScriptPath: string;
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begin
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Result := GetGlobalPath + cxWebJScriptDTPath + PathDelim;
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end;
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function TcxWebDesignerFileManager.GetImagePath: string;
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begin
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Result := GetGlobalPath + cxWebImageDTPath + PathDelim;
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end;
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function TcxWebDesignerFileManager.QualifyFileName(const AFileName: string): string;
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var
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AExt: string;
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begin
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AExt := UpperCase(ExtractFileExt(AFileName));
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if (AExt <> '') and (AExt[1] = '.') then
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AExt := Copy(AExt, 2, Length(AExt));
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if AExt = 'JS' then
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Result := GetJSScriptPath + AFileName
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else
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if (AExt = 'GIF') or (AExt = 'JPEG') or (AExt = 'BMP') or
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(AExt = 'JPG') then
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Result := GetImagePath + AFileName
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else Result := AFileName;
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Result := StringReplace(Result, '\', '/', [rfReplaceAll, rfIgnoreCase]);
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end;
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function TcxWebDesignerFileManager.GetStream(const AFileName: string; var AOwned: Boolean): TStream;
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var
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AHTMLSource: TcxWebDsgnHTMLSource;
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AFile: string;
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AFileStream: TFileStream;
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begin
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AHTMLSource := TcxWebDsgnHTMLSource.Create('', FDesigner);
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try
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if (Pos(FRoot.Name, AFileName) = 1) and
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(Length(AFileName) > Length(FRoot.Name)) and
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(AFileName[Length(FRoot.Name) + 1] = '.') then
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Result := TStringStream.Create(AHTMLSource.HTML)
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else
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begin
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AFile := ExtractFilePath(AHTMLSource.SourceEditor.FileName) + AFileName;
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if FileExists(AFile) then
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begin
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AFileStream := TFileStream.Create(AFile, fmOpenRead, fmShareDenyNone);
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Result := TMemoryStream.Create;
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Result.CopyFrom(AFileStream, AFileStream.Size);
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AFileStream.Free;
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if Result.Size > 0 then
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Result.Position := 0;
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end else Result := TStringStream.Create('');
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end;
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finally
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AHTMLSource.Free;
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end;
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end;
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type
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TRootReader = class(TReader)
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private
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FRoot: TComponent;
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procedure DoFindMethodEvent(Reader: TReader; const MethodName: string;
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var Address: Pointer; var Error: Boolean);
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procedure DoFindComponentClassEvent(Reader: TReader; const ClassName: string;
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var ComponentClass: TComponentClass);
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public
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constructor Create(ARoot: TComponent; AStream: TStream);
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end;
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constructor TRootReader.Create(ARoot: TComponent; AStream: TStream);
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begin
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inherited Create(AStream, 4096);
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FRoot := ARoot;
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OnFindMethod := DoFindMethodEvent;
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OnFindComponentClass := DoFindComponentClassEvent;
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end;
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procedure TRootReader.DoFindMethodEvent(Reader: TReader; const MethodName: string;
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var Address: Pointer; var Error: Boolean);
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begin
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Error := False;
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end;
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procedure TRootReader.DoFindComponentClassEvent(Reader: TReader; const ClassName: string;
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var ComponentClass: TComponentClass);
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var
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I: Integer;
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begin
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|
if ComponentClass <> nil then exit;
|
|
for I := 0 to FRoot.ComponentCount - 1 do
|
|
if CompareText(ClassName, FRoot.Components[I].ClassName) = 0 then
|
|
begin
|
|
ComponentClass := TComponentClass(FRoot.Components[I].ClassType);
|
|
break;
|
|
end;
|
|
end;
|
|
|
|
type
|
|
TComponentAccess = class(TComponent);
|
|
|
|
|
|
function cxGetDesignWebContent(ADesigner: IDesigner): string;
|
|
var
|
|
AModuleList: TcxWebDesignModuleList;
|
|
ARequest: TcxWebDesignRequest;
|
|
AResponse: TcxWebDesignResponse;
|
|
ASession: TAbstractWebSession;
|
|
ASaveDesignerFileManager: IDesignerFileManager;
|
|
ASaveWebContext: TAbstractWebContext;
|
|
ASaveGetWebContextProc: TGetWebContextProc;
|
|
ASaveSetWebContextProc: TSetWebContextProc;
|
|
ADummyRoot: TComponent;
|
|
|
|
|
|
function CreateDummyRootComponent: TComponent;
|
|
var
|
|
AStream: TMemoryStream;
|
|
AReader: TRootReader;
|
|
ATypeData: PTypeData;
|
|
ADesignerModule: IcxWebDesignerModule;
|
|
begin
|
|
ATypeData := GetTypeData(ADesigner.Root.ClassInfo);
|
|
Result := nil;
|
|
while (ATypeData <> nil) and not cxWebIsBasePageModule(ATypeData.ClassType) and
|
|
(ATypeData.ParentInfo <> nil) do
|
|
ATypeData := GetTypeData(ATypeData.ParentInfo^);
|
|
if (ATypeData = nil) or (ATypeData.ParentInfo = nil) then exit;
|
|
|
|
AStream := TMemoryStream.Create;
|
|
try
|
|
AStream.WriteComponent(ADesigner.Root);
|
|
AStream.Seek(0, soFromBeginning);
|
|
|
|
Result := TComponentClass(ATypeData.ClassType).Create(nil);
|
|
AReader := TRootReader.Create(ADesigner.Root, AStream);
|
|
try
|
|
Result := AReader.ReadRootComponent(Result);
|
|
TComponentAccess(Result).SetDesigning(True, False);
|
|
finally
|
|
AReader.Free;
|
|
end;
|
|
Result.Name := ADesigner.Root.Name;
|
|
if Supports(Result, IcxWebDesignerModule, ADesignerModule) then
|
|
ADesignerModule.SetIsDesignerPreviewModule(True);
|
|
finally
|
|
AStream.Free;
|
|
end;
|
|
end;
|
|
|
|
procedure InitWebContext;
|
|
begin
|
|
AModuleList := TcxWebDesignModuleList.Create(ADummyRoot, ADesigner);
|
|
ARequest := TcxWebDesignRequest.Create;
|
|
AResponse := TcxWebDesignResponse.Create(nil);
|
|
ASession := TcxWebSession.Create;
|
|
ASaveWebContext := WebContext;
|
|
ASaveSetWebContextProc := SetWebContextProc;
|
|
ASaveGetWebContextProc := GetWebContextProc;
|
|
SetWebContextProc := cxSetWebContext;
|
|
GetWebContextProc := cxGetWebContext;
|
|
TWebContext.Create(AModuleList, ARequest, AResponse, ASession);
|
|
WebContext.DispatchedPageName := ADummyRoot.Name;
|
|
ASaveDesignerFileManager := DesignerFileManager;
|
|
DesignerFileManager := TcxWebDesignerFileManager.Create(ADummyRoot, ADesigner);
|
|
TcxWebFileCacheManager.Instance.IncDesignerCount;
|
|
end;
|
|
|
|
procedure DestroyWebContext;
|
|
begin
|
|
TcxWebFileCacheManager.Instance.DecDesignerCount;
|
|
DesignerFileManager := ASaveDesignerFileManager;
|
|
WebContext.Free;
|
|
GetWebContextProc := ASaveGetWebContextProc;
|
|
SetWebContextProc := ASaveSetWebContextProc;
|
|
if Assigned(SetWebContextProc) then
|
|
SetWebContextProc(ASaveWebContext);
|
|
ARequest.Free;
|
|
AResponse.Free;
|
|
ASession.Free;
|
|
AModuleList.Free;
|
|
end;
|
|
|
|
var
|
|
AWebPage: IcxWebPage;
|
|
begin
|
|
if Supports(ADesigner.Root, IcxWebPage) then
|
|
begin
|
|
if Supports(ADesigner.Root, IcxWebPageModule) then // TODO
|
|
begin
|
|
Classes.RegisterClass(TComponentClass(ADesigner.Root.ClassType));
|
|
ADummyRoot := CreateDummyRootComponent;
|
|
end else ADummyRoot := ADesigner.Root;
|
|
if (ADummyRoot <> nil) and Supports(ADummyRoot, IcxWebPage, AWebPage) then
|
|
begin
|
|
try
|
|
InitWebContext;
|
|
try
|
|
if AWebPage.DispatchPage(ADummyRoot.Name, AResponse) then
|
|
Result := AResponse.Content
|
|
else Result := '';
|
|
except
|
|
on E: Exception do
|
|
if Result = '' then Result := E.Message;
|
|
end;
|
|
finally
|
|
if Supports(ADesigner.Root, IcxWebPageModule) then
|
|
ADummyRoot.Free;
|
|
DestroyWebContext;
|
|
end;
|
|
end else Result := '';
|
|
if Supports(ADesigner.Root, IcxWebPageModule) then
|
|
Classes.UnregisterClass(TComponentClass(ADesigner.Root.ClassType));
|
|
end else Result := '';
|
|
end;
|
|
|
|
end.
|