{************************************************************}
{                 Delphi VCL Extensions                      }
{                                                            }
{                     XML Interface                          }
{                                                            }
{           Copyright (c) 2013 SoftGold software company     }
{                                                            }
{************************************************************}
unit XMLInterface;
{$INCLUDE SGDXF.INC}
interface

uses
  Windows, SysUtils, Classes, Graphics, Menus, Properties, DXFConv, CADExport,
  CADImage, sgXMLParser, sgConsts, sgFunction, Controls, Forms, sgLists,
  {sgCADXML,} sgDrawingNavigator
{$IFDEF SG_USE_PNG}
  , pngimage
{$ELSE}
  {$IFDEF SGDEL_XE2}
  , Vcl.Imaging.jpeg
  {$ELSE}
  , jpeg
  {$ENDIF}
{$ENDIF}
{$IFDEF SGDEL_XE2}
  ,System.Types
{$ENDIF}
  ;

type
  TsgXMLKey = (xkUndefined, xkGet, xkAdd, xkSelect, xkApply, xkDelete, xkLoad,
    xkUnload, xkSwitchDrawing, xkGetImage, xkContextMenu, xkRibbon, xkCommand,
    xkGetSelected, xkFitToSize, xkSignToEvent, xkUnSelect, xkGetViewRect,
    xkSetViewRect, xkGetBox, xkShowSelectedEntities, xkSave, xkCreateHatch,
    xkGetDrawingChanged, xkGetView, xkSetView, xkCustomSelectMode, xkEditor,
    xkRegistration, xkSetSpecialCustomInsert, xkSupportedCommandsList,
    xkSupportedClassesList, xkHelp, (*xkItem,*) xkMenuItemClick, (*xkChanged*,)
    (*xkExportParams,*) (*xkSelected,*) xkGetExternalFiles, xkInvalidate,
    xkGetDrawingsList, xkCaptureScreen (*, xkSuccess*),
    xkSetDrawingChanged, xkMenuButton, xkGetCADPoint
    );

  TsgXMLKeyUsesCADEditor = set of TsgXMLKey;

  TsgXMLEvent = (xeUndefined, xeOnMouseMove, xeOnMouseDown, xeOnMouseUp,
    xeOnMouseWheel, xeOnSelectEntities, xeOnConfirmEntitiesDeletion,
    xeOnChangeEntities, xeOnCopyEntities, xeOnCreateEntities, xeOnDeleteEntities,
    xeOnCancelEntities, xeOnLayoutBeforeChange, xeOnLayoutAfterChange,
    xeOnPasteEntities, xeOnRedoEntities, xeOnUndoEntities, xeOnKeyDown,
    xeOnKeyUp, xeOnKeyPress, xeOnPaint, xeOnContextClick, xeOnButtonClick,
    xeApplicationExeption);

const
  cnstEvents: array[TsgXMLEvent] of record
    Name: string;
    ValueType: TsgDataType;
    Description: string;
  end = (
    (Name: 'OnUndefined';                ValueType: dtUndefined;   Description: 'Abstract event'),
    (Name: 'OnMouseMove';                ValueType: dtParameters;  Description: 'Return values: X="Screen X" Y="Screen Y" point="x,y,z"'),
    (Name: 'OnMouseDown';                ValueType: dtParameters;  Description: 'Return values: X="Screen X" Y="Screen Y" point="x,y,z"'),
    (Name: 'OnMouseUp';                  ValueType: dtParameters;  Description: 'Return values: X="Screen X" Y="Screen Y" point="x,y,z"'),
    (Name: 'OnMouseWheel';               ValueType: dtParameters;  Description: 'Return values: X="Screen X" Y="Screen Y" WheelDelta="DELTA" point="x,y,z"'),
    (Name: 'OnSelectEntity';             ValueType: dtString;      Description: 'Return values: Result handle="handle of selected entity"'),
    (Name: 'OnConfirmEntitiesDeletion';  ValueType: dtString;  Description: 'Event returns handles of the entities to be deleted. Parent application can call a confirmation dialog and delete the entities by <delete/> command.'), // command line
    (Name: 'OnChangeEntities';           ValueType: dtString;  Description: 'Return values: Result handle="handle of selected entity'),
    (Name: 'OnCopyEntities';             ValueType: dtString;  Description: 'Return values: Result handle="handle of selected entity'),
    (Name: 'OnCreateEntities';           ValueType: dtString;  Description: 'Return values: Result handle="handle of selected entity'),
    (Name: 'OnDeleteEntities';           ValueType: dtString;  Description: 'Return values: Result handle="handle of selected entity'),
    (Name: 'OnCancelEntities';           ValueType: dtString;  Description: 'Return values: Result handle="handle of selected entity'),
    (Name: 'OnLayoutBeforeChange';       ValueType: dtString;  Description: 'Return values: Result handle="handle of selected entity'),
    (Name: 'OnLayoutAfterChange';        ValueType: dtString;  Description: 'Return values: Result handle="handle of selected entity'),
    (Name: 'OnPasteEntities';            ValueType: dtString;  Description: 'Return values: Result handle="handle of selected entity'),
    (Name: 'OnRedoEntities';             ValueType: dtString;  Description: 'Return values: Result handle="handle of selected entity'),
    (Name: 'OnUndoEntities';             ValueType: dtString;  Description: 'Return values: Result handle="handle of selected entity'),
    (Name: 'OnKeyDown';                  ValueType: dtParameters;  Description: 'Return values: Key="KEYCHAR"'),
    (Name: 'OnKeyUp';                    ValueType: dtParameters;  Description: 'Return values: Key="KEYCHAR"'),
    (Name: 'OnKeyPress';                 ValueType: dtParameters;  Description: 'Return values: Key="KEY"'),
    (Name: 'OnPaint';                    ValueType: dtUndefined;   Description: ''),
    (Name: 'OnMenuConterxClick';         ValueType: dtParameters;   Description: 'Return values: Caption and Index of menu'),
    (Name: 'OnMenuButtonClick';          ValueType: dtParameters;   Description: 'Return values: Caption and Handle of button'),
    (Name: 'OnApplicationExeption';      ValueType: dtParameters;  Description: 'Return values: info of an exception')
  );

const
  cnstKeyNotUsedCADEditor: TsgXMLKeyUsesCADEditor = [xkUndefined, xkLoad,
    xkContextMenu, xkRibbon, xkCommand, xkRegistration, xkSupportedCommandsList,
    xkSupportedClassesList, xkHelp, (*xkItem,*) xkMenuItemClick, xkGetDrawingsList,
    xkGetViewRect, xkSetViewRect, xkMenuButton];

type
  TsgProxyEditor = class(TInterfacedObject)
  private
    FOnPasteEntities: TCADNotifyEvent;
    FOnChangeEntities: TCADNotifyEvent;
    FOnConfirmEntitiesDeletion: TCADConfirmEvent;
    FOnUndoEntities: TCADNotifyEvent;
    FOnRedoEntities: TCADNotifyEvent;
    FOnDeleteEntities: TCADNotifyEvent;
    FOnLayoutChange: TCADNotifyEvent;
    FOnLayoutBeforeChange: TCADNotifyEvent;
    FOnSelectEntities: TCADNotifyEvent;
    FOnCreateEntities: TCADNotifyEvent;
    FOnCopyEntities: TCADNotifyEvent;
    FOnCancelEntities: TCADNotifyEvent;

    FOnMouseDownEvent: TMouseEvent;
    FOnMouseMoveEvent: TMouseMoveEvent;
    FOnMouseUpEvent: TMouseEvent;
    FOnMouseWheel: TMouseWheelEvent;
    FOnKeyDown: TKeyEvent;
    FOnKeyPress: TKeyPressEvent;
    FOnKeyUp: TKeyEvent;
    FOnPaint: TNotifyEvent;
  protected
    function GetCoordsMDown: TFPoint; virtual; abstract;
    function GetCoordsMMove: TFPoint; virtual; abstract;
    function GetCoordsMUp: TFPoint; virtual; abstract;
    function GetImageCoords(const APoint: TPoint): TFPoint; virtual; abstract;
    function GetViewRect: TRect;  virtual; abstract;
    function GetViewFRect: TFRect;  virtual; abstract;
    function GetReadOnly: Boolean; virtual; abstract;
    procedure SetReadOnly(const AValue: Boolean); virtual; abstract;

    procedure DoChangeEntities(const Image, AEntities: TObject);
    function DoCanDeleteEntities(const Image, AEntities: TObject): Integer;
    procedure DoCopyEntities(const Image, AEntities: TObject);
    procedure DoCreateEntities(const Image, AEntities: TObject);
    procedure DoDeleteEntities(const Image, AEntities: TObject);
    procedure DoLayoutChange(const Image, AEntities: TObject);
    procedure DoLayoutBeforeChange(const Image, AEntities: TObject);
    procedure DoPasteEntities(const Image, AEntities: TObject);
    procedure DoRedoEntities(const Image, AEntities: TObject);
    procedure DoSelectEntities(const Image, AEntities: TObject);
    procedure DoUndoEntities(const Image, AEntities: TObject);
    procedure DoCancelEntities(const Image, AEntities: TObject);

    procedure DoMouseDown(Sender: TObject; Button: TMouseButton;
      Shift: TShiftState; X, Y: Integer);
    procedure DoMouseMove(Sender: TObject; Shift: TShiftState;
      X, Y: Integer);
    procedure DoMouseUp(Sender: TObject; Button: TMouseButton;
      Shift: TShiftState; X, Y: Integer);
    procedure DoMouseWheel(Sender: TObject; Shift: TShiftState;
      WheelDelta: Integer; X, Y: Integer; var AHadnled: Boolean);
    procedure DoKeyDown(Sender: TObject; var Key: Word; Shift: TShiftState);
    procedure DoKeyUp(Sender: TObject; var Key: Word; Shift: TShiftState);
    procedure DoKeyPress(Sender: TObject; var Key: Char);
    procedure DoPaint(Sender: TObject);
  public
    constructor Create(const AOwner: TObject); virtual;
    procedure BeginEnt(const AEnt: TsgDXFEntity; const AInternal: Boolean);virtual; abstract;
    procedure BeginList(const AList: TList; const ACount: Integer; const AInternal: Boolean);virtual; abstract;

{use this function to change selected entitites}
    function AfterChange: Integer;  virtual; abstract;
    function BeforeChange(const AEntities: TList): Integer;  virtual; abstract;

    procedure CalcExtents; virtual; abstract;
    procedure Changed;virtual; abstract;
    function CreatingHatch(const APatternName: string;
      const AScale, AAngle: Double; const AColor1: PsgColorCAD;
      const AColor2: PsgColorCAD = nil): TsgDXFEntity; virtual; abstract;
    procedure DeleteEntities; virtual; abstract;
    procedure ShowCADRect(ARect: TFRect);  virtual; abstract;
    procedure ShowWindowRect(ARect: TRect);  virtual; abstract;
    procedure EndEnt(const AEnt: TsgDXFEntity);virtual; abstract;
    procedure EndList(const AList: TList; const ACount: Integer);virtual; abstract;
    procedure FitToSize; virtual; abstract;
    procedure GetSelectedEntities(const AList: TList); virtual; abstract;
    function GetCurrentDrawingGuid: TGUID; virtual;
    procedure Invalidate; virtual; abstract;
    procedure InvalidateFRect(const ARect: TFRect); virtual; abstract;
    function IsChanged: Boolean; virtual; abstract;
    function IsOnlyCommand: Boolean; virtual;
    function LispRun(const AText: string; AResults: TStrings = nil): Integer; virtual; abstract;
    procedure OpenVPort; virtual; abstract;
    function SaveImage(const AName: string; const AIsDWG: Boolean;
      AVer: TsgDWGVersion = acR2004;
      IsConvertImageToOLE: Boolean = True): Boolean; virtual; abstract;
    function GetCustomDrawParams(const AHandle: UInt64): TsgCustomSelectMode; virtual; abstract;
    procedure GetShowEntitySettings(var AMethod: TsgShowEntityMethod;
      var APrecision: Double); virtual; abstract;
    procedure SetCustomDrawParams(const AHandle: UInt64;
      const ACustomDraw: TsgCustomSelectMode;
      const AUnregister: Boolean); virtual; abstract;
    function SetSelectedEntities(const AList: TList): Integer; virtual; abstract;
    procedure SetShowEntitySettings(const AMethod: TsgShowEntityMethod;
      const APrecision: Double = 10); virtual; abstract;
    procedure ShowSelectEntities; virtual; abstract;
    procedure RecreateBlockAsTemplate; virtual; abstract;

    property CoordsMDown: TFPoint read GetCoordsMDown;
    property CoordsMMove: TFPoint read GetCoordsMMove;
    property CoordsMUp: TFPoint read GetCoordsMUp;
    property OnChangeEntities: TCADNotifyEvent read FOnChangeEntities write
      FOnChangeEntities;
    property OnConfirmEntitiesDeletion: TCADConfirmEvent read
      FOnConfirmEntitiesDeletion write FOnConfirmEntitiesDeletion;
    property OnCopyEntities: TCADNotifyEvent read FOnCopyEntities write
      FOnCopyEntities;
    property OnCreateEntities: TCADNotifyEvent read FOnCreateEntities write
      FOnCreateEntities;
    property OnDeleteEntities: TCADNotifyEvent read FOnDeleteEntities write
      FOnDeleteEntities;
    property OnLayoutAfterChange: TCADNotifyEvent read FOnLayoutChange write
      FOnLayoutChange;
    property OnLayoutBeforeChange: TCADNotifyEvent read FOnLayoutBeforeChange write
      FOnLayoutBeforeChange;
    property OnPasteEntities: TCADNotifyEvent read FOnPasteEntities write
      FOnPasteEntities;
    property OnRedoEntities: TCADNotifyEvent read FOnRedoEntities write
      FOnRedoEntities;
    property OnSelectEntities: TCADNotifyEvent read FOnSelectEntities write
      FOnSelectEntities;
    property OnUndoEntities: TCADNotifyEvent read FOnUndoEntities write
      FOnUndoEntities;
    property OnCancelEntities: TCADNotifyEvent read FOnCancelEntities write
      FOnCancelEntities;

    property OnMouseDown: TMouseEvent read FOnMouseDownEvent write
      FOnMouseDownEvent;
    property OnMouseMove: TMouseMoveEvent read FOnMouseMoveEvent write
      FOnMouseMoveEvent;
    property OnMouseUp: TMouseEvent read FOnMouseUpEvent write
      FOnMouseUpEvent;
    property OnMouseWheel: TMouseWheelEvent read FOnMouseWheel write
      FOnMouseWheel;

    property OnKeyDown: TKeyEvent read FOnKeyDown write
      FOnKeyDown;
    property OnKeyPress: TKeyPressEvent read FOnKeyPress write
      FOnKeyPress;
    property OnKeyUp: TKeyEvent read FOnKeyUp write
      FOnKeyUp;

    property OnPaint: TNotifyEvent read FOnPaint write FOnPaint;

    property ReadOnly: Boolean read GetReadOnly write SetReadOnly;
  end;

  TsgXMLIDE = class(TsgInterfacedObject, IsgXMLIde, IsgResultNode, IsgXMLOut)
  private
    FResult: string;
    FXMLInp: TsgParser;
    FRootOut: TsgNode;
    FResultNode: TsgNode;
    FSelectedHandles: TsgInt64List;
    FHWNDMainForm: HWND;
    FXMLOut: TsgParser;
    FCADImage: TsgCADImage;
    FInstructions: TStringList;
    FCADEditor: TsgProxyEditor;
    FOnXMLMessage: TsgXMLMessage;
    FPathToXMLExamples: string;
    FXMLEvents: set of TsgXMLEvent;
    //Used to describe the parameters for the search in the current command
    FXMLCommParameterList: TStringList;
    FOnApplicationExeptionPrev: TExceptionEvent;
    function CreateResultEvent(const AName: string): TsgNode;
    procedure DoXMLParserError(const AMessage: string;
      const APosition: PPoint);
    procedure SendEvents(const AEventResult: TsgNode;
      const AImage: TObject; AImgGuid: PGUID = nil);
    procedure CreateResultNode(AName: string);
    procedure CheckResults;
    //procedure DoTrialMessage;
    function GetResult: TsgNode;
    function GetOutput: TsgNode;
    function GetErrors: TsgNode;
    function GetIResultNode: IsgResultNode;
    function GetImageGuid: TGUID;
    function GetKey(const AStr: string): TsgXMLKey;
    function GetEntityByNode(const ANode: TsgNodeSample;
      const AErrorsNode: TsgNode;
      AHandles: TsgInt64List = nil; AEntityList: TList = nil): TsgDXFEntity;
    function GetXMLOutString: string;
    function GetOnXMLMessage: TsgXMLMessage;
    procedure SetCADImage(const Value: TsgCADImage);
    function SaveConverterToXML: string;
    function SaveEntityToXML(AEntity: TsgListObject): string;
    function AddSelectEntity(AEntity: TsgDXFEntity;
      const ANode: TsgNodeSample): Boolean;
    function SetSelectEntities(AEntities: TList;
      const ANode: TsgNodeSample; const AMode: Integer = 0): Boolean;
    procedure AddEntitiesToNode(const ANode: TsgNode;
      const Image, AEntities: TObject);
    procedure AddExceptionToNode(const ANode: TsgNode;
      const AException: Exception);
    procedure SaveToFileWithExportParams(ANode: TsgNodeSample);
    procedure ConvertStreamToOutputBase64(AStream: TStream;
      AOutput: TsgNode; AFormat: TsgExportFormat);

    procedure AddAttribsNoUseInFilter(const ANode: TsgNode; const Attribs: TList);
    procedure ApplyFilter(const AFilter: TsgNode; const AEntities: TList);
    function ExtractAttribsNoUseInFilter(const ANode: TsgNode; const Attribs: TList): Boolean;
    function GetEntitiesByNodeWithFilter(const ANode: TsgNodeSample;
      const AErrorsNode: TsgNode; AHandles: TsgInt64List; AEntityList: TList): Boolean;


    function FilterElement(const AEnt: TsgDXFEntity;
      const AFindEnt: TsgDXFEntity): Boolean;
    function FilterCurElement(const AEnt: TsgDXFEntity;
      const AFindEnt: TsgDXFEntity): Boolean;
    function FilterBlockEnt(const ABlock: TsgDXFBlock;
      const AFindEnt: TsgDXFEntity): Boolean;
    function ScanBlocks(const AGroup: TsgDXFGroup;
      const AFindEnt: TsgDXFEntity): Boolean;
    function ScanElements(const AGroup: TsgDXFGroup;
      const AFindEnt: TsgDXFEntity): Boolean;
    function IsCanDelete(AObject: TsgDXFEntity;
      var AParent: TsgDXFGroup): Boolean;

    procedure SetCADEditor(const Value: TsgProxyEditor);
    procedure SetOnXMLMessage(const Value: TsgXMLMessage);
    procedure InitRoot(var AParser: TsgParser; var ARoot: TsgNode);
    function CommandToXMLNode(const ANode: TsgNode;
      const AResult: TsgNode; ACommand: TsgXMLKey): Integer;

    procedure CommandSupportedCommandsList(ANode: TsgNodeSample; AResult: IsgResultNode);
    procedure CommandSupportedClassesList(ANode: TsgNodeSample; AResult: IsgResultNode);
    procedure CommandGet(ANode: TsgNodeSample; AResult: IsgResultNode);
    procedure CommandGetBox(ANode: TsgNodeSample; AResult: IsgResultNode);
    procedure CommandGetCADPoint(ANode: TsgNodeSample; AResult: IsgResultNode);
    procedure CommandGetExternalFiles(ANode: TsgNodeSample; AResult: IsgResultNode);
    procedure CommandAdd(ANode: TsgNodeSample; AResult: IsgResultNode);
    procedure CommandFitToSize(ANode: TsgNodeSample; AResult: IsgResultNode);
    procedure CommandSelect(ANode: TsgNodeSample; AResult: IsgResultNode);
    procedure CommandUnSelect(ANode: TsgNodeSample; AResult: IsgResultNode);
    procedure CommandApply(ANode: TsgNodeSample; AResult: IsgResultNode);
    procedure CommandApplyXML(ANode: TsgNodeSample; AResult: IsgResultNode;
      const AUseChilds: Boolean);
    procedure CommandDelete(ANode: TsgNodeSample; AResult: IsgResultNode);
    procedure CommandLoad(ANode: TsgNodeSample; AResult: IsgResultNode);
    procedure CommandUnLoad(ANode: TsgNodeSample; AResult: IsgResultNode);
    procedure CommandSwitchDrawing(ANode: TsgNodeSample; AResult: IsgResultNode);
    procedure CommandGetDrawingsList(ANode: TsgNodeSample; AResult: IsgResultNode);
    procedure CommandGetImage(ANode: TsgNodeSample; AResult: IsgResultNode);
    procedure CommandContextMenu(ANode: TsgNodeSample; AResult: IsgResultNode);
    procedure CommandMenuButton(ANode: TsgNodeSample; AResult: IsgResultNode);
    procedure CommandRibbon(ANode: TsgNodeSample; AResult: IsgResultNode);
    procedure CommandCommand(ANode: TsgNodeSample; AResult: IsgResultNode);
    procedure CommandGetSelected(ANode: TsgNodeSample; AResult: IsgResultNode);
    procedure CommandSignToEvent(ANode: TsgNodeSample; AResult: IsgResultNode);
    procedure CommandSaveToFile(ANode: TsgNodeSample; AResult: IsgResultNode);
    procedure CommandGetDrawingChanged(ANode: TsgNodeSample; AResult: IsgResultNode);
    procedure CommandSetDrawingChanged(ANode: TsgNodeSample; AResult: IsgResultNode);
    procedure CommandGetView(ANode: TsgNodeSample; AResult: IsgResultNode);
    procedure CommandSetView(ANode: TsgNodeSample; AResult: IsgResultNode);
    procedure CommandCustomSelectMode(ANode: TsgNodeSample; AResult: IsgResultNode);
    procedure CommandEditorAttribs(ANode: TsgNodeSample; AResult: IsgResultNode);
    procedure CommandSetShowEntitySettings(ANode: TsgNodeSample; AResult: IsgResultNode);
    procedure CommandShowSelectEntities(ANode: TsgNodeSample; AResult: IsgResultNode);
    procedure CommandCreateHatch(ANode: TsgNodeSample; AResult: IsgResultNode);
    procedure CommandRegistration(ANode: TsgNodeSample; AResult: IsgResultNode);
    procedure CommandSetSpecialCustomInsert(ANode: TsgNodeSample; AResult: IsgResultNode);
    procedure CommandInvalidate(ANode: TsgNodeSample; AResult: IsgResultNode);
    procedure CommandGetViewRect(ANode: TsgNodeSample; AResult: IsgResultNode);
    procedure CommandSetViewRect(ANode: TsgNodeSample; AResult: IsgResultNode);
    procedure CommandCaptureScreen(ANode: TsgNodeSample; AResult: IsgResultNode);
    function CommandHelp(ANode: TsgNodeSample): string;
    procedure SaveToHTMLHelp(AFileName: string);

    procedure OnMouseEvent(const AType: TsgXMLEvent; Sender: TObject;
      Button: TMouseButton; Shift: TShiftState; X, Y, WheelDelta: Integer);
    procedure OnEventCustom(const AType: TsgXMLEvent;
      const Image, AEntities: TObject;
      const AttribNames, AttribValues: array of string;
      const ANeedGuid: Boolean);
  public
    MainApplication: IsgMainApplication;
    constructor Create;
    destructor Destroy; override;
    function CheckXMLInterfaceVersion(const AMainNode: TsgNodeSample): Boolean;
    procedure GetHints(ANodeName: string; var Hints: TStringList);
    // main function of XML IDE:
    function ProcessXML(AInput: string): string;
    property CADImage: TsgCADImage read FCADImage write SetCADImage;
    property CADEditor: TsgProxyEditor read FCADEditor write SetCADEditor;
    property HWNDMainForm: HWND read FHWNDMainForm write FHWNDMainForm;
    // funcion of IsgXMLOut
    procedure AddToOutput(const Attribs: TStrings);
    procedure AddToOutputNV(const AName, AValue: string);
    procedure AddToError(const Attribs: TStrings);
    procedure AddToErrorNV(const AName, AValue: string);
    //mouse events
    procedure OnMouseUp(Sender: TObject; Button: TMouseButton;
      Shift: TShiftState; X, Y: Integer);
    procedure OnMouseMove(Sender: TObject;
      Shift: TShiftState; X, Y: Integer);
    procedure OnMouseDown(Sender: TObject; Button: TMouseButton;
      Shift: TShiftState; X, Y: Integer);
    procedure OnMouseWheel(Sender: TObject; Shift: TShiftState;
      WheelDelta: Integer; MousePos: TPoint; var Handled: Boolean);
    //MainApplication event
    procedure OnApplicationExeption(Sender: TObject; E: Exception);
    procedure OnContextMenuClick(Sender: TObject);
    procedure OnButtonMenuClick(const AHandle: THandle;
      const ACaption: string);
    //editor events
    procedure OnChangeEntities(const Image, AEntities: TObject);
    procedure OnCopyEntities(const Image, AEntities: TObject);
    procedure OnCreateEntities(const Image, AEntities: TObject);
    procedure OnDeleteEntities(const Image, AEntities: TObject);
    procedure OnCancelEntities(const Image, AEntities: TObject);
    procedure OnLayoutAfterChange(const Image, AEntities: TObject);
    procedure OnLayoutBeforeChange(const Image, AEntities: TObject);
    procedure OnPasteEntities(const Image, AEntities: TObject);
    procedure OnRedoEntities(const Image, AEntities: TObject);
    procedure OnUndoEntities(const Image, AEntities: TObject);
    procedure OnConfirmEntitiesDeletion(const Image, AEntities: TObject;
      var AValue: Integer);
    procedure OnSelectEntities(const Image, AEntities: TObject);
    //key events
    procedure OnKeyDown(Sender: TObject; var Key: Word; Shift: TShiftState);
    procedure OnKeyUp(Sender: TObject; var Key: Word; Shift: TShiftState);
    procedure OnKeyPress(Sender: TObject; var Key: Char);
    //main events
    procedure OnPaint(Sender: TObject);

    property OnXMLMessage: TsgXMLMessage read GetOnXMLMessage write SetOnXMLMessage;
  end;

const
  cnstXMLCmdComment = 'Comment';
  cnstXMLCmdBox = 'Box';
  cnstXMLMode = 'Mode';
  cnstXMLCmdRect = 'Rect';
  cnstXMLCmdAdd = 'add';
  cnstXMLCmdApply = 'apply';
  cnstXMLCmdBase64 = 'base64';
  cnstXMLCmdCaption = 'caption';
  cnstXMLCmdColor = 'color';
  cnstXMLCmdCommand = 'command';
  cnstXMLCmdContextMenu = 'ContextMenu';
  cnstXMLCmdCreateHatch = 'CreateHatch';
  cnstXMLCmdCurrent = 'current';
  cnstXMLCmdDelete = 'delete';
  cnstXMLCmdEvent = 'Event';
  cnstXMLCmdFile = 'file';
  cnstXMLCmdFittoSize = 'FitToSize';
  cnstXMLCmdGet = 'get';
  cnstXMLCmdGetBox = 'getbox';
  cnstXMLCmdGetImage = 'getimage';
  cnstXMLCmdGetSelected = 'getselected';
  cnstXMLCmdGlobalX = 'globalx';
  cnstXMLCmdGlobalY = 'globaly';
  cnstXMLCmdHandle = 'handle';
  cnstXMLCmdGuid = 'guid';
  cnstXMLCmdPathName = 'pathname';
  cnstXMLCmdHatchName = 'hatchname';
  cnstXMLCmdIndex = 'index';
  cnstXMLCmdItem = 'item';
  cnstXMLCmdItems = 'items';
  cnstXMLCmdLine = 'line';
  cnstXMLCmdLoad = 'load';
  cnstXMLCmdMarker = 'marker';
  cnstXMLCmdBoxCad = 'BoxCad';
  cnstXMLCmdMenuItemClick = 'menuItemClick';
  cnstXMLCmdMessage = 'message';
  cnstXMLCmdMode = 'mode';
  cnstXMLCmdName = 'name';
  cnstXMLCmdOnClick = 'onClick';
  cnstXMLCmdOnPopup = 'onPopup';
  cnstXMLCmdOut = 'out';
  cnstXMLCmdPoint = 'point';
  cnstXMLCmdPoint1 = 'point1';
  cnstXMLCmdPolyline = 'polyline';
  cnstXMLCmdResult = 'Result';
  cnstXMLCmdRibbon = 'ribbon';
  cnstXMLCmdSave = 'save';
  cnstXMLCmdSaveERROR = 'file is not saved';
  cnstXMLCmdSaveHandle = 'savehandle';
  cnstXMLCmdSaveOK = 'file is saved';
  cnstXMLCmdSelect = 'select';
  cnstXMLCmdSelected = 'selected';
  cnstXMLCmdSelectedCount = 'SelectedCount';
  cnstXMLCmdSelectEntities = 'selectEntities';
  cnstXMLCmdConfirmEntitiesDeletion = 'ConfirmEntitiesDeletion';
  cnstXMLCmdSender = 'sender';
  cnstXMLCmdGetViewRect = 'getviewrect';
  cnstXMLCmdSetViewRect = 'setviewrect';
  cnstXMLCmdShowSelectedEntities = 'showselectedentities';
  cnstXMLCmdSignToEvent = 'signtoevent';
  cnstXMLCmdSwitchDrawing = 'switchdrawing';
  cnstXMLGetDrawingsList = 'getdrawingslist';
  cnstXMLCaptureScreen = 'capturescreen';
  cnstXMLCmdText = 'text';
  cnstXMLCmdType = 'type';
  cnstXMLCmdUnload = 'unload';
  cnstXMLCmdUnselect = 'unselect';
  cnstXMLCmdVersion = 'version';
  cnstXMLCmdVertex = 'vertex';
  cnstXMLCmdVisible = 'visible';
  cnstXMLCmdAngle = 'angle';
  cnstXMLCmdPatternScale = 'patternscale';
  cnstXMLCmdGetDrawingChanged = 'getdrawingchanged';
  cnstXMLCmdSetDrawingChanged = 'setdrawingchanged';
  cnstXMLCmdButtonMenu = 'buttonmenu';
  cnstXMLCMDDrawingNavigator = 'DrawingNavigator';
  cnstXMLCmdGetCADCoords = 'getcadcoords';
  cnstXMLCmdChanged = 'changed';
  cnstXMLCmdIsConvertImageToOle = 'isconvertimagetoole';
  cnstXMLCmdGetView = 'GetView';
  cnstXMLCmdSetView = 'SetView';
  cnstXMLCmdCustomSelectMode = 'CustomSelectMode';
  cnstXMLCmdReadOnly = 'ReadOnly';
  cnstXMLCmdShowEntityMethod = 'ShowEntityMethod';
  cnstXMLCmdShowEntityPrecision = 'ShowEntityPrecision';
  cnstXMLCmdEditor = 'Editor';
  cnstXMLCmdDrawMatrix = 'DrawMatrix';
  cnstXMLCmdDrawing = 'Drawing';
  cnstXMLCmdEx = 'Ex';
  cnstXMLCmdEy = 'Ey';
  cnstXMLCmdEz = 'Ez';
  cnstXMLCmdE0 = 'E0';
  cnstXMLCmdShowSelectEntities = 'ShowSelectEntities';
//  cnstXMLNotSupported = 'NotSupported';//use cnstXMLUnsupported
  cnstXMLCmdUser = 'User';
  cnstXMLCmdEMail = 'EMail';
  cnstXMLCmdKey = 'Key';
  cnstXMLCmdRegistration = 'Registration';
  cnstXMLCmdSetSpecialCustomInsert = 'SetCustomInsert';
  cnstXMLCmdValue = 'value';
  cnstXmlCmdCustomDraw = 'CustomDraw';
  cnstXmlCmdAskOnDelete = 'AskOnDelete';
  cnstXmlCmdHeight = 'Height';
  cnstXmlCmdWeight = 'Weight';
  cnstXmlCmdWidth = 'Width';
  cnstXmlCmdTop = 'Top';
  cnstXmlCmdLeft = 'Left';
  cnstXmlCmdRight = 'Right';
  cnstXmlCmdBottom = 'Bottom';
  cnstXmlCmdSupportedInstructionsList = 'SupportedInstructionsList';
  cnstXMLDiscriptionSupportedInstructionsList = 'Returns all command supported by XML interface';
  cnstXmlCmdSupportedCommandsList = 'SupportedCommandsList';
  cnstXmlSupportedClassesList = 'SupportedClassesList';
  cnstXMLCMdParam = 'Param';
  cnstXMLCMdDecription = 'Description';
  cnstXMLCMdInputParam = 'Input params';
  cnstXMLCMdReturningValues = 'Returning values';
  cnstXMLCmdButton = 'Button';
  cnstXMLCmdLButton = 'LBUTTON';
  cnstXMLCmdRButton = 'RBUTTON';
  cnstXMLCmdMButton = 'MBUTTON';
  cnstXMLCmdX = 'X';
  cnstXMLCmdY = 'Y';
  cnstXMLCmdShift = 'Shift';
  cnstXMLCmdKeyChar = 'Key';
  cnstXMLCmdWheelDelta = 'WheelDelta';
  cnstXmlCmdClipMode = 'ClipMode';
  cnstXmlCmdClipRect = 'ClipRect';

  cnstXmlCmdModeInterfacce = 'INTERFACE';

  cnstXMLCmdCommandDeleteError = 'Object with handle %s can not be removed';
  cnstXMLCmdCommandDeleteResult = 'Object with handle %s removed';

  //Errors message
  cnstXMLMessageUnsupportedCommand = 'Unsupported command <%s>';
  cnstXMLMessageNotHasNode = 'Does not have node';

  cnstXMLInputParamParamsGet = '[' + cnstXMLCmdHandle + ']';
  cnstXMLInputParamSelect = cnstXMLCmdHandle;

  cnstXMLInputParamApply = 'Any object''s attribute, that has no read-only modifier, can be used as a parameter';
  cnstXMLInputParamLoad = 'File name';
  cnstXMLInputParamUnload = cnstXMLCmdGuid+'|'+cnstXMLCmdCurrent;
  cnstXMLInputParamSwitch = cnstXMLCmdGuid;
  cnstXMLInputParamGetImage = cnstXMLCmdTop + ', ' + cnstXMLCmdLeft+
    ', ' + cnstXMLCmdRight + ', ' + cnstXMLCmdBottom +
    '[' + cnstXMLCmdWeight + ', ' + cnstXMLCmdHeight + ']';
  cnstXMLInputParamContextMenu = cnstXMLCmdMode;
  cnstXMLInputParamRibbon = cnstXMLCmdVisible;
  cnstXMLInputParamCommand = 'All supported command line';
  cnstXMLInputParamSelected = cnstXMLCmdHandle;
  cnstXMLInputParamSignToEvent = cnstXMLCmdEvent;
  cnstXMLInputParamUnselect = cnstXMLCmdHandle+'[' + cnstXMLCmdMarker + ']';
  cnstXMLInputParamSave = cnstXMLCmdFile +
    ', [ ' + cnstXMLCmdVersion + ', ' +
    cnstXMLCmdType + ', ' + cnstXMLCmdIsConvertImageToOle+']';
  cnstXMLInputParamCreateHatch = cnstXMLCmdHatchName +
    ', [ ' + cnstXMLCmdAngle + ', ' + cnstXMLCmdPatternScale +']';
  cnstXMLInputParamGetDrawingChanged = '';
  cnstXMLInputParamGetView = '';
  cnstXMLInputParamSetView = 'CircleZoomPercent, UCSOrigin, UCSXDir, UCSYDir, '+
    'UCSVP, ViewAspectRatio, ViewCenterPoint, ViewDirection, ViewTarget, ' +
    'ViewHeight, ViewTwistAngle';
  cnstXMLInputParamCustomSelectMode = cnstXMLCmdHandle+ ', ' +
    cnstXMLCmdCustomDraw+ ', ' +  cnstXMLCmdReadOnly+ ', ' + cnstXMLCmdAskOnDelete;
  cnstXMLInputParamEditor = cnstXMLCmdReadOnly+ ', ' +
    cnstXMLCmdShowEntityMethod + ', ' + cnstXMLCmdShowEntityPrecision;
  cnstXMLInputParamRegistration = cnstXMLCmdUser + ', ' +
    cnstXMLCmdEMail + ', ' + cnstXMLCmdKey;

  cnstXMLDiscriptionSupportedCommandsList = 'Returns all command supported by XML interface';
  cnstXMLDiscriptionSupportedClassesList = 'Returns classes of objects (lines, sections, layers, etc.) supported by the XML interface. All objects are returned with default values.';
  cnstXMLEmptyParams = 'The command has no params';
  cnstXMLHelp = 'Help';
  csntNestedStructure = 'NestedStructure';
  cnstExportParams = 'ExportParams';
  cntSelected = 'Selected';
  cnstGetExternalFiles = 'GetExternalFiles';
  cnstXMLInvalidate = 'Invalidate';

//create buttons event message
  cnstXMLNotEnteredPageName = 'Page name not entered';
  cnstXMLNotEnteredToolbarName = 'Toolbar name not entered';
  cnstXMLNotEnteredButtonCaption = 'Button caption not entered';
  cnstXMLNotEnteredMode = 'Mode(ADD/DEL) not entered';
  cnstXMLPageNotFound = 'Page not found';
  cnstXMLToolbarNotFound = 'Toolbar not found';
  cnstXMLButtonNotFound = 'Button not found';
  cnstXMLButtonAlreadyExist = 'Button already exists';
  cnstXMLButtonDelete = 'Button deleted';
  cnstXMLButtonAdded = 'Button added';
  cnstXMLButtonEnabled = 'Button is enable';
  cnstXMLButtonDisabled = 'Button is disable';

type

  TXMLCommParameter = (cpDrawingData, cpHandle, cpFileName, cpCaption, cpText,
    cpParameters, cpShowEntityPrecision, cpShowEntityMethod, cpTop, cpLeft,
    cpRight, cpBottom, cpWidth, cpHeight, cpBase64, cpCalcs, cpItems, cpMode,
    cpReadOnly, cpCustomDraw, cpAskOnDelete, cpEnabled,
    {save params:} cpProportional, cpBitPerPixel, cpQuality, cpMeasureInPixels,
    cpTransparent, cpDPUX, cpDPUY, cpCompression, cpPageWidth, cpPageHeight,
    cpAuthor, cpLayoutExportMode, cpLayoutNameExportMode, cpVersion,
    cpIsConvertImageToOLE,{/save} cpMarker, cpPathToXMLExamples, cpPathname,
    {add <- in the end event and result} cpEvent, cpResult,
    cpSelectedCount, cpGuid, cpIndex, cpHatchName, cpAngle, cpPatternScale,
    cpColor, cpLineWeight, cpOutput, cpErrors, cpInstruction, cpItem,
    cpExportParams, cpBox, cpCreated, cpUpdated, cpChanged, cpSelected,
    cpFormat, cpDrawing, cpExternalFile, cpVisibleArea, cpCADArea, cpRect,
    cpUser, cpEMail, cpKey, cpRegistration, cpVisible, cpSetDrawingMode,
    cpDrawingMode, cpButtonCaption, cpPoint, cpSelectMode);

  TXMLCommParameters = set of TXMLCommParameter;

const

 cntKeyWords: array [TsgXMLKey] of record
    Name: string;
    Description: string;
  end = (
    (Name: 'Undefined'; Description:'';),//xkUndefined
    (Name: cnstXMLCmdGet; Description: 'The GET instruction returns properties of an entity specified by handle or the structure of the drawing if no parameters are given.'),//xkGet
    (Name: cnstXMLCmdAdd; Description: 'The ADD instruction adds entities and Drawing Structure Data to the current drawing.'),//xkAdd
    (Name: cnstXMLCmdSelect; Description: 'The SELECT Instruction selects entity(ies) by its(their) handle(s)'),//xkSelect
    (Name: cnstXMLCmdApply; Description: 'The APPLY instruction assigns new values to the entity attributes. The entity must be selected beforhand by using the Select Instruction, by mouse, etc.'),//xkApply
    (Name: cnstXMLCmdDelete; Description: 'The DELETE instruction deletes the selected entities.'),//xkDelete
    (Name: cnstXMLCmdLoad; Description: 'The LOAD instruction loads a file from the HDD or from a URL.'),//xkLoad
    (Name: cnstXMLCmdUnload; Description: 'Closes the specified drawing. The drawing can be specified by guid, index or current parameter.'),//xkUnload
    (Name: cnstXMLCmdSwitchDrawing; Description: 'Switches the active drawing. The drawing can be specified by guid or index.'),//xkSwitch
    (Name: cnstXMLCmdGetImage; Description: 'Returns am image of the current view in Base64 encoding.'),//xkGetImage
    (Name: cnstXMLCmdContextMenu; Description: 'Changes the context menu. ' + cnstXMLInputParamContextMenu),//xkContextMenu
    (Name: cnstXMLCmdRibbon; Description: 'Defines the ribbon visibility. Use the instruction with the on/off switch.'),//xkRibbon
    (Name: cnstXMLCmdCommand; Description: 'The Command instruction executes Command line with parameters described in the Text attribute.'),//xkInstruction
    (Name: cnstXMLCmdGetSelected; Description: 'The GETSELECTED Instruction returns the handles of the selected entities.'),//xkGetSelected
    (Name: cnstXMLCmdFittoSize; Description: 'The FITTOSIZE instruction fits the drawing to the display area proportionally.'),//xkFitToSize
    (Name: cnstXMLCmdSignToEvent; Description: 'The SignToEvent Instruction signs for particular events to accept callbacks with XML data.'),//xkSignToEvent
    (Name: cnstXMLCmdUnselect; Description: 'The UNSELECT instruction unselects entities which are specified by Handles.'),//xkUnSelect
    (Name: cnstXMLCmdGetViewRect; Description: 'Unsupported'),//xkGetViewRect,
    (Name: cnstXMLCmdSetViewRect; Description: 'Unsupported'),//xkSetViewRect,
    (Name: cnstXMLCmdGetBox; Description: 'Returns the 3D box that encloses the selected entities.'),//xkGetBox
    (Name: cnstXMLCmdShowSelectedEntities; Description: 'The SHOWSELECTEDENTITIES instruction zooms view to show the selected entities. Parameters are set in the <a href="#Editor">Editor</a> Instruction.'),//xkShowSelectedEntities
    (Name: cnstXMLCmdSave; Description: 'Saves the current drawing. The ExportParams attribute must be defined.'),//xkSave
    (Name: cnstXMLCmdCreateHatch; Description: 'The CREATEHATCH instruction creates Hatch using selected entities as contours. Please select an entity by mouse or by Select xml Instruction before calling this Instruction.'),//xkCreateHatch
    (Name: cnstXMLCmdGetDrawingChanged; Description: 'Returns a true or false value depending on the changes applied to the current drawing.'),//xkGetDrawingChanged,
    (Name: cnstXMLCmdGetView; Description: 'The GETVIEW instruction asks current view area as <a href="#cstVport">cstVport</a> data. Use with SETVIEW instruction.'),//xkGetView
    (Name: cnstXMLCmdSetView; Description: 'The SETVIEW instruction zooms the display area to given <a href="#cstVport">cstVport</a> data. Use with GETVIEW instruction.'),//xkSetView
    (Name: cnstXMLCmdCustomSelectMode; Description: 'The CUSTOMSELECTMODE instruction allows defining custom selections and turning on the read-only mode with a possibility to select certain entities.'),//xkCustomSelectMode
    (Name: cnstXMLCmdEditor; Description: 'The EDITOR instruction specifies parameters for the CAD editor.'),//xkEditor
    (Name: cnstXMLCmdRegistration; Description: 'The REGISTRATION instruction can be used to input a license key for CADSoftTools software.'),//xkRegistration
    (Name: cnstXMLCmdSetSpecialCustomInsert; Description: 'For special use.'),//xkSetSpecialCustomInsert
    (Name: cnstXmlCmdSupportedInstructionsList; Description: cnstXmlDiscriptionSupportedInstructionsList),//xkSupportedInstructionsList
    (Name: cnstXmlSupportedClassesList; Description: cnstXmlDiscriptionSupportedClassesList),//xkSupportedClassesList
    (Name: cnstXMLHelp; Description: 'Creates CAD XML API help in html format'),//xkHelp
    //structures
   // (Name: 'Item'; Description: 'Creates a context menu item with a caption from the parameter "caption". This caption is returned as result data when the item is clicked.'), //
    (Name: cnstXMLCmdMenuItemClick; Description: 'MenuItemClick is a result instruction only. it returns the caption of a clicked context menu item and its index.'), //
   // (Name: 'Changed'; Description: 'CHANGED is a result of the GETDRAWINGCHANGED instruction. CHANGED returns True if any changes were implemented in a Drawing.'),
  //  (Name: cntExportParams; Description: 'ExportParams is a child attribute of the SAVE instruction.'),
    //(Name: cntSelected; Description: 'SELECTED is a result node of the <a href=#GETSELECTED> GETSELECTED </a> instruction, which stores handles of the selected entities.'),
    (Name: cnstGetExternalFiles; Description: 'Returns a list of referenced files with paths.'),
    (Name: cnstXMLInvalidate; Description: 'Invalidates the current layout or area specified by the Box attribute.'),
    (Name: cnstXMLGetDrawingsList; Description: 'Returns guids for all opened drawings.'),
    (Name: cnstXMLCaptureScreen; Description: 'Unsupported.'),
    //(Name: 'Success'; Description: 'SUCCESS is a result node when ProcessXML is called successfully.')
    (Name: cnstXMLCmdSetDrawingChanged; Description: 'Set true or false value depending on changes were applied to the drawing by guid or Mode. If do not find GUID then Mode = 1(current drawing)'),
    (Name: cnstXMLCmdButtonMenu; Description: 'Add or delete button by tools palette'),
    (name: cnstXMLCmdGetCADCoords; Description: 'Convert point to cad coordinat system')
    );

const

 cnsTXMLCommParameters: array[TXMLCommParameter] of record
    Name: string;
    ValueType: TsgDataType;
    Description: string;
  end = (
    (Name: 'DrawingData';          ValueType: dtList;        Description: 'Drawing data structure'), //add, get
    (Name: 'Handle';               ValueType: dtEntHandle;   Description: 'Handle can be given directly via $ or indirectly via @ attributes, it also accepts a list of handles divided by the ";" sign. For example: Handle="$24", Handle="@1", Handle="@;$27;$28"'), //load, save
    (Name: 'File';                 ValueType: dtString;      Description: 'Path to the file'), //load, save
    (Name: cnstXMLCmdCaption;      ValueType: dtString;      Description: 'Caption of a menu item'),
    (Name: 'Text';                 ValueType: dtString;      Description: 'Text for the console command line, help, etc.'), // command line
    (Name: 'Parameters';           ValueType: dtString;      Description: 'Any object''s attribute that has no read-only modifiers can be used as a parameter'), //apply
    (Name: 'ShowEntityPrecision';  ValueType: dtDouble;      Description: 'Property of the ShowSelectEntities instruction, a value of the precision calculation.'), //
    (Name: 'ShowEntityMethod';     ValueType: dtByte;        Description: 'Property of the ShowSelectEntities instruction, the type of the precision calculation. Possible parameters are (0: Proportional, 1: Absolute, 2: FitToSize)'), //
    (Name: cnstXmlCmdTop;          ValueType: dtInteger;     Description: 'Top'), //
    (Name: cnstXmlCmdLeft;         ValueType: dtInteger;     Description: 'Left'), //
    (Name: cnstXmlCmdRight;        ValueType: dtInteger;     Description: 'Right'), //
    (Name: cnstXmlCmdBottom;       ValueType: dtInteger;     Description: 'Bottom'), //
    (Name: cnstXmlCmdWidth;        ValueType: dtInteger;     Description: 'Width'), //
    (Name: cnstXmlCmdHeight;       ValueType: dtInteger;     Description: 'Height'), //
    (Name: cnstXMLCmdBase64;       ValueType: dtBase64;      Description: 'Picture in Base64 encoding.'), //
    (Name: 'Calcs';                ValueType: dtList;        Description: 'Accepts <a href="#Calc">Calc</a> child nodes.'), //
    (Name: 'Items';                ValueType: dtList;        Description: 'Accepts <a href="#cmdItem">Item</a> child nodes.'), //
    (Name: 'Mode';                 ValueType: dtInteger;     Description: 'Context menu mode: 0: replace, 1: add to bottom, 2: add to top'), //
    (Name: 'ReadOnly';             ValueType: dtBool;        Description: 'Read-only status'), //
    (Name: 'CustomDraw';           ValueType: dtBool;        Description: 'The selected entities are drawn with custom color and lineweight'), //
    (Name: 'AskOnDelete';          ValueType: dtBool;        Description: 'If true, the library asks before deleting entities, whose handles are specified in the CUSTOMSELECTMODE parameters '), //
    (Name: 'Enabled';              ValueType: dtBool;        Description: 'Enabled (True) or Disabled (False)'), //
    {save}
    (Name: 'Proportional';         ValueType: dtBool;        Description: ''),
    (Name: 'BitPerPixel';          ValueType: dtByte;        Description: ''),
    (Name: 'Quality';              ValueType: dtDouble;      Description: ''),
    (Name: 'MeasureInPixels';      ValueType: dtBool;        Description: ''),
    (Name: 'Transparent';          ValueType: dtBool;        Description: 'Sets transparency for GIF'),
    (Name: 'DPUX';                 ValueType: dtByte;        Description: 'DPI X'),
    (Name: 'DPUY';                 ValueType: dtByte;        Description: 'DPI Y'),
    (Name: 'Compression';          ValueType: dtString;      Description: 'Compression for raster: LZW, Deflate, JPEG, CCITT3, CCITT4, CCITT6, Rle, Auto, None'),
    (Name: 'PageWidth';            ValueType: dtInteger;     Description: 'Page Width'),
    (Name: 'PageHeight';           ValueType: dtInteger;     Description: 'Page Height'),
    (Name: 'Author';               ValueType: dtString;      Description: 'Author'),
    (Name: 'LayoutExportMode';     ValueType: dtByte;        Description: 'Selects layouts to be exported: 0: Model; 1: AllLayouts; 2:LayoutByName; 3:AllPaperSpaces; 4:CurrentLayout.'),
    (Name: 'LayoutNameExportMode'; ValueType: dtString;      Description: 'Layout name, used if layouts export mode is "LayoutByName."'),
    (Name: 'Version';              ValueType: dtString;      Description: 'DWG or DXF version. For instance: acR2004, acR2000.'),
    (Name: 'IsConvertImageToOLE';  ValueType: dtBool;        Description: 'Converts external images to OLE in DWG/DXF export.'),
    {/save}
    (Name: 'Marker';               ValueType: dtBool;        Description: 'Shows (True) or does not show (False) editor markers for the selected entity.'), //
    (Name: 'PathToXMLExamples';    ValueType: dtString;      Description: 'The path to the parent XML examples directory for using them in the HTML Help.'), //
    (Name: 'PathName';             ValueType: dtString;      Description: 'A set of symbols showing the location of the named sections or objects in the Converter name space (which is similar to the DXF structure). As a separator the sign ";" is used.'), //
    (Name: 'Event';                ValueType: dtString;      Description: 'The accepted event names are: <a href="#OnSelectEntity"> "OnSelectEntity" </a>, <a href="#OnMouseDown">"OnMouseDown"</a> , <a href="#OnConfirmEntitiesDeletion">OnConfirmEntitiesDeletion</a>.'), //
    (Name: 'Result';               ValueType: dtList;        Description: 'Result data.'), //
    (Name: 'SelectedCount';        ValueType: dtInteger;     Description: 'The number of the selected entities'),
    (Name: 'Guid';                 ValueType: dtString;      Description: 'Drawing Guid'),
    (Name: 'Index';                ValueType: dtInteger;     Description: 'Drawing Index'),
    (Name: 'HatchName';            ValueType: dtString;      Description: 'Hatch name'), //
    (Name: 'Angle';                ValueType: dtDouble;      Description: 'Angle'),
    (Name: 'PatternScale';         ValueType: dtDouble;      Description: 'Pattern scale'),
    (Name: 'Color';                ValueType: dtColorCAD;    Description: 'Color CAD'),
    (Name: 'LineWeight';           ValueType: dtDouble;      Description: 'Line weight'),
    (Name: 'Output';               ValueType: dtList;        Description: 'Contains the result of the command'),
    (Name: 'Errors';               ValueType: dtList;        Description: 'Contains the errors of the command'),
    (Name: 'Instruction';          ValueType: dtString;      Description: 'The name of the command which the result is for'),
    (Name: 'Item';                 ValueType: dtListItem;    Description: 'Creates a context menu item with the caption from parameter "caption". This caption is returned as result data when the item is clicked.'),
    (Name: cnstExportParams;       ValueType: dtList;        Description: 'ExportParams is a child attribute of the SAVE instruction.'),
    (Name: 'Box';                  ValueType: dtTFRect;      Description: 'Box '),
    (Name: 'Created';              ValueType: dtListItem;    Description: 'Created '),
    (Name: 'Updated';              ValueType: dtListItem;    Description: 'Updated '),
    (Name: 'Changed';              ValueType: dtBool;        Description: 'CHANGED returns True if any changes were implemented in a Drawing.'),
    (Name: 'Selected';             ValueType: dtListItem;    Description: 'Stores handles of the selected entities'),
    (Name: 'Format';               ValueType: dtString;      Description: 'Output file format'),
    (Name: 'Drawing';              ValueType: dtListItem;    Description: 'Drawing item'),
    (Name: 'ExternalFile';         ValueType: dtListItem;    Description: 'External file item'),
    (Name: 'VisibleArea';          ValueType: dtListItem;    Description: 'VisibleArea item'),
    (Name: 'CADArea';              ValueType: dtListItem;    Description: 'CADArea item'),
    (Name: 'Rect';                 ValueType: dtTFRect;      Description: 'Rect'),
    (Name: 'User';                 ValueType: dtString;      Description: 'User'),
    (Name: 'EMail';                ValueType: dtString;      Description: 'EMail'),
    (Name: 'Key';                  ValueType: dtString;      Description: 'Key'),
    (Name: 'Registration';         ValueType: dtInteger;     Description: 'Registration'),
    (Name: 'Visible';              ValueType: dtBool;        Description: 'Visible'),
    (Name: 'Mode';                 ValueType: dtInteger;     Description: '0 - by guid, 1 - current drawing, 2 - all drawings'),
    (Name: 'Mode';                 ValueType: dtInteger;     Description: 'Full drawing mode'),
    (Name: 'Caption';              ValueType: dtString;      Description: 'Caption of button'),
    (name: 'Point';                ValueType: dtFPoints2DOr3D; Description: 'points for conversion to cad coordinate system'),
    (name: 'Mode';                 ValueType: dtInteger;     Description: '0 - set, 1 - remove, 2 - add')
  );

  cnstTypeSaveFormat: array[0..1]
    of record
    TypeFormat: string;
    IsDWG: Boolean;
  end = (
    (TypeFormat:'dwg'; IsDWG: True),
    (TypeFormat:'dxf'; IsDWG: False)
    );

  cnstVersionFile: array[TsgDWGVersion]
    of string =('acR09', 'acR10', 'acR11', 'acR12', 'acR13', 'acR14', 'acR2000',
    'acR2004', 'acR2007', 'acR2010', 'acR2013');

  cnstDecimalSeparatorNames = cnstCommaPoint;

type
  TsgSupportDWGVersion = set of TsgDWGVersion;

const
  cnstSupportDWGVersion: TsgSupportDWGVersion = [acR2000, acR2004];

implementation


uses
{$IFDEF SGAPPPROTECT}
  AppProtect,
{$ENDIF}
  ActiveX;

type
  TsgDXFEntityAccess = class(TsgDXFEntity);
  TsgDXFConverterAccess = class(TsgDXFConverter);
  TsgDrawingNavigatorAccess = class(TsgDrawingNavigator);
  TsgDXFVportAccess = class(TsgDXFVport);
  TsgCADImageAccess = class(TsgCADImage);

var
  KeyWords: TsgStringList = nil;

{ TsgXMLIDE }

procedure DoMessageError(const ANodeResult: TsgNode; const AMessage: string;
  const ANode: TsgNodeSample);
var
  vError: TsgNode;
begin
  vError := ANodeResult.AddChildNV(cnstXMLError);
  vError.AddAttribNV(cnstXMLCmdMessage, AMessage);
  if Assigned(ANode) and ANode.HasPosition then
    vError.AddAttribNV(cnstXMLPosition).ValueData.ValueAsPoint :=
      Point(ANode.Position.X, ANode.Position.Y);
end;

function ShiftToStr(const AShift: TShiftState): string;
var
  vShift: Integer absolute AShift;
begin
  if AShift = [] then
    Result := ''
  else
    Result := IntToStr(vShift);
end;

procedure AddAttribShift(const ANode: TsgNode; const AShift: TShiftState);
var
  vValue: string;
begin
  vValue := ShiftToStr(AShift);
  if Length(vValue) > 0 then
    ANode.AddAttribNV(cnstXMLCmdShift).ValueAsStr := vValue;
end;

function GetMarkerSelectMode(const ANode: TsgNodeSample): Boolean;
var
  vAttrib: TsgNodeSample;
begin
  Result := True;
  vAttrib := ANode.GetAttributeByName(cnstXMLCmdMarker);
  if Assigned(vAttrib) then
    Result := vAttrib.ValueAsBool;
end;

procedure DrawingXMLDataToNode(const AData: TsgDrawingXMLData; const ANode: TsgNode);
begin
  ANode.AddAttribNV(cnstXMLCmdGuid).ValueAsStr := GUIDToString(AData.Guid);
  ANode.AddAttribNV(cnstXMLCmdFile).ValueAsStr := AData.Name;
  ANode.AddAttribNV(cnstXMLCmdIndex).ValueAsInt := AData.Index;
  ANode.AddAttribNV(cnstXMLCmdMode).ValueAsInt := AData.Mode;
end;

procedure DrawingXMLDataFromNode(const ANode: TsgNode; var AData: TsgDrawingXMLData);
begin
  FillChar(AData, SizeOf(AData), 0);
  AData.Guid := StringToGUID(ANode.GetAttributeByName(cnstXMLCmdGuid).ValueAsStr);
  AData.Name := GetAttributeStr(ANode, cnstXMLCmdFile);
  AData.Index := GetAttributeInt(ANode, cnstXMLCmdIndex, -1);
  AData.Mode := GetAttributeInt(ANode, cnstXMLCmdMode, 0);
end;

function TsgXMLIDE.AddSelectEntity(AEntity: TsgDXFEntity;
  const ANode: TsgNodeSample): Boolean;
var
  vAddEntity: TList;
begin
  vAddEntity := TList.Create;
  try
    vAddEntity.Add(AEntity);
    Result := SetSelectEntities(vAddEntity, ANode, 2);
  finally
    vAddEntity.Free;
  end;
end;

function CheckAttribs(const AChild, AFilterChild: TsgNode): Boolean;
var
  J, K: Integer;
  vAttrib, vFilterAttrib: TsgNodeSample;
begin
  Result := False;
  if Assigned(AChild) then
  begin
    K := 0;
    for J := 0 to AFilterChild.AttributeNodesCount - 1 do
    begin
      vFilterAttrib := AFilterChild.AttributeNodes[J];
      vAttrib := AChild.GetAttributeByName(vFilterAttrib.Name);
      if not Assigned(vAttrib) then
        Break;
      if not vFilterAttrib.ValueData.IsEqual(vAttrib.ValueData) then
        Break;
      Inc(K);
    end;
    Result := K = AFilterChild.AttributeNodesCount;
  end;
end;

procedure SelectWithFilter(const AFilter: TsgNode; const AEntity: TsgDXFEntity;
  const ASelectEntities: TList; AParentNode: TsgNode);
const
  cnstXMLMode: TsgXMLModes = [xmAddSubEntities, xmlGetDefaultValue];
var
  vEntityNode, vFilterChild: TsgNode;
begin
  vEntityNode := nil;
  AParentNode.Clear;
  if AFilter.ChildNodesCount > 0 then
  begin
    vFilterChild := TsgNode(AFilter.GetChildByName(TsgDXFEntityAccess(AEntity).GetXMLName));
    if Assigned(vFilterChild) then
    begin
      AEntity.ToXML(AParentNode, cnstXMLMode);
      vEntityNode := TsgNode(AParentNode.ChildNodes[0]);
      if not CheckAttribs(vEntityNode, vFilterChild) then
        vEntityNode := nil;
    end;
  end
  else
  begin
    AEntity.ToXML(AParentNode, cnstXMLMode);
    vEntityNode := TsgNode(AParentNode.ChildNodes[0]);
  end;
  if Assigned(vEntityNode) then
  begin
    if CheckAttribs(vEntityNode, AFilter) then
      ASelectEntities.Add(AEntity);
  end;
end;

procedure TsgXMLIDE.ApplyFilter(const AFilter: TsgNode; const AEntities: TList);
var
  I, J: Integer;
  vSelect: TList;
  vParentNode: TsgNode;
  vEntity: TsgDXFEntity;
begin
  if AEntities.Count < 1 then
    Exit;
  vSelect := TList.Create;
  vParentNode := TsgNode.Create;
  try
    vSelect.Capacity := AEntities.Count;
    for I := 0 to AEntities.Count - 1 do
    begin
      vEntity := AEntities.List[I];
      for J := 0 to vEntity.Count - 1 do
        SelectWithFilter(AFilter, vEntity.Entities[J], vSelect, vParentNode);
    end;
    AEntities.Count := 0;
    CopyLists(AEntities, vSelect);
  finally
    vParentNode.Free;
    vSelect.Free;
  end;
end;

function TsgXMLIDE.CreateResultEvent(const AName: string): TsgNode;
begin
  Result := TsgNode.Create;
  Result.Name := cnstXMLResult;
  Result.AddAttribNV(cnstXMLInstruction).ValueAsStr := AName;
  Result.AddAttribNV(cnstXMLType).ValueAsStr := cnstXMLTypeEvent;
end;

procedure TsgXMLIDE.AddExceptionToNode(const ANode: TsgNode;
  const AException: Exception);
var
  vErrors: TsgNode;
begin
  vErrors := TsgNode(ANode.GetChildByName(cnstXMLErrors));
  if not Assigned(vErrors) then
    vErrors := ANode.AddChildNV(cnstXMLErrors);
  DoMessageError(vErrors, AException.{$IFDEF SGDEL_2009}ToString{$ELSE}ClassName{$ENDIF}, ANode);
end;

procedure TsgXMLIDE.AddAttribsNoUseInFilter(const ANode: TsgNode;
  const Attribs: TList);
var
  I: Integer;
begin
  for I := 0 to Attribs.Count -  1 do
    ANode.AddAttrib(Attribs[I]);
  Attribs.Count := 0;
end;

function TsgXMLIDE.ExtractAttribsNoUseInFilter(const ANode: TsgNode;
  const Attribs: TList): Boolean;
const
  cnstExtractAttribs: array [0..3] of string = (cnstXMLCmdPathName,
    cnstXMLCmdHandle, cnstXMLCmdMarker, cnstXMLCmdMode);

  procedure Extract(const AName: string);
  var
    vAttrib: TsgNodeSample;
  begin
    vAttrib := ANode.GetAttributeByName(AName);
    if Assigned(vAttrib) then
    begin
      ANode.RemoveAttrib(vAttrib);
      Attribs.Add(vAttrib);
    end;
  end;

var
  I: Integer;
begin
  for I := Low(cnstExtractAttribs) to High(cnstExtractAttribs) do
    Extract(cnstExtractAttribs[I]);
  Result := ANode.AttributeNodesCount + ANode.ChildNodesCount > 0;
end;

procedure TsgXMLIDE.AddEntitiesToNode(const ANode: TsgNode;
  const Image, AEntities: TObject);

  procedure AddEntity(const AEntity: TsgDXFEntity);
  var
    vNode: TsgNode;
  begin
    vNode := ANode.AddChildNV(cnstXMLCmdSelected, '');
    vNode.AddAttribNV(cnstXMLCmdHandle).ValueAsHandle := AEntity.Handle;
  end;

var
  I, vCount: Integer;
  vList: TList absolute AEntities;
begin
  vCount := 0;
  if AEntities is TList then
  begin
    vCount := vList.Count;
    for I := 0 to vCount - 1 do
      AddEntity(TsgDXFEntity(vList[I]));
  end
  else
  begin
    if AEntities is TsgDXFEntity then
    begin
      vCount := 1;
      AddEntity(TsgDXFEntity(AEntities));
    end;
  end;
  ANode.AddAttribNV(cnstXMLCmdSelectedCount).ValueAsInt := vCount;
end;

procedure TsgXMLIDE.AddToOutput(const Attribs: TStrings);
begin
  GetOutput.AddAttribs(Attribs);
end;

procedure TsgXMLIDE.AddToOutputNV(const AName, AValue: string);
begin
  GetOutput.AddAttribNV(AName, AValue);
end;

procedure TsgXMLIDE.AddToError(const Attribs: TStrings);
begin
  GetErrors.AddChildNV(cnstXMLError).AddAttribs(Attribs);
end;

procedure TsgXMLIDE.AddToErrorNV(const AName, AValue: string);
begin
  GetErrors.AddChildNV(cnstXMLError).AddAttribNV(AName, AValue);
end;

function TsgXMLIDE.CheckXMLInterfaceVersion(const AMainNode: TsgNodeSample): Boolean;
var
  vNodeVersion: TsgNodeSample;
  vVersion: TsgVersion;
begin
  Result := False;
  vNodeVersion := AMainNode.GetAttributeByName(cnstXMLCmdVersion);
  if Assigned(vNodeVersion) then
  begin
    vVersion := vNodeVersion.ValueData.ValueAsVersion;
    Result := vVersion.Major = cnstXMLIntfaceVersion.Major;
  end;
end;

constructor TsgXMLIDE.Create;
begin
  FInstructions := nil;
  FXMLInp := TsgParser.Create;
  InitRoot(FXMLOut, FRootOut);
  FCADEditor := nil;
  FXMLCommParameterList := TStringList.Create;
  FOnApplicationExeptionPrev := Application.OnException;
  Application.OnException := OnApplicationExeption;
end;

procedure TsgXMLIDE.CreateResultNode(AName: string);
var
  vResultsNode: TsgNode;
begin
  vResultsNode := TsgNode(FRootOut.GetChildByName(cnstXMLResults));
  if not Assigned(vResultsNode) then
  begin
    vResultsNode := FRootOut.AddChildNV(cnstXMLResults);
  end;
  FResultNode := vResultsNode.AddChildNV(cnstXMLResult);
  FResultNode.AddAttribNV(cnstXMLInstruction, AName);
end;

procedure TsgXMLIDE.CommandCustomSelectMode(ANode: TsgNodeSample;
  AResult: IsgResultNode);
var
  I: Integer;
  vEntity: TsgDXFEntity;
  vList: TsgInt64List;
  vEntities: TList;

  procedure SetMode(const ANode: TsgNodeSample; const AMode: TsgEntityMode;
    var AModes: TsgEntityModes; var AUnregister: Boolean);
  begin
    if Assigned(ANode) then
    begin
      AUnregister := False;
      if ANode.ValueAsBool then
        Include(AModes, AMode)
      else
        Exclude(AModes, AMode);
    end;
  end;

  procedure SetCustomSelectModeForHandle(ANodeSample: TsgNodeSample; AHandle: Int64);
  var
    vNodeAttrib, vAttribCustomDraw, vAttribReadOnly, vAttribAskOnDelete: TsgNodeSample;
    vCustomDraw: TsgCustomSelectMode;
    vUnregister: Boolean;
  begin
    vCustomDraw := CADEditor.GetCustomDrawParams(AHandle);
    if (vCustomDraw.Mode = []) and (AHandle <> cnstBadHandle) then
    begin
      vCustomDraw := CADEditor.GetCustomDrawParams(cnstBadHandle);//set default params
      vCustomDraw.Mode := [];
    end;
    vNodeAttrib := ANode.GetAttributeByName(cnstXMLNames[xmlColor].Name);
    if Assigned(vNodeAttrib) then
      vCustomDraw.Color := ConvertColorCADToRGB(StrToColorCAD(vNodeAttrib.ValueAsStr));
    vNodeAttrib := ANode.GetAttributeByName(cnstXMLNames[xmlLineWeight].Name);
    if Assigned(vNodeAttrib) then
      vCustomDraw.LineWidth := Round(vNodeAttrib.ValueAsDouble);
    vAttribCustomDraw := ANode.GetAttributeByName(cnstXmlCmdCustomDraw);
    vAttribReadOnly := ANode.GetAttributeByName(cnstXmlCmdReadOnly);
    vAttribAskOnDelete := ANode.GetAttributeByName(cnstXmlCmdAskOnDelete);
    vUnregister := True;
    SetMode(vAttribCustomDraw, emCustomDraw, vCustomDraw.Mode, vUnregister);
    SetMode(vAttribReadOnly, emReadOnly, vCustomDraw.Mode, vUnregister);
    SetMode(vAttribAskOnDelete, emAskOnDelete, vCustomDraw.Mode, vUnregister);
    FCADEditor.SetCustomDrawParams(AHandle, vCustomDraw, vUnregister);
  end;

begin
  if not Assigned(CADEditor) then
    Exit;

  vList := TsgInt64List.Create;
  vEntities := TList.Create;
  try
    vEntity := GetEntityByNode(ANode, AResult.Errors, vList, vEntities);
    if Assigned(vEntity) then
    begin
      if vEntities.Count > 1 then
      begin
        for I := vEntities.Count - 1 downto 0 do
        begin
          SetCustomSelectModeForHandle(ANode, TsgDXFEntity(vEntities[I]).Handle);
        end;
      end
      else
      begin
        SetCustomSelectModeForHandle(ANode, vEntity.Handle);
      end;
    end
    else
      SetCustomSelectModeForHandle(ANode, cnstBadHandle);
  finally
    vList.Free;
    vEntities.Free;
  end;
end;

procedure TsgXMLIDE.CommandCreateHatch(ANode: TsgNodeSample;
  AResult: IsgResultNode);
var
  vHatch: TsgCADHatch;
  vNode: TsgNode;
  vNodeAttr: TsgNodeAttrib;
  vColor: TsgColorCAD;
  vPColor1, vPColor2: PsgColorCAD;
  vScale, vAngle: Double;
  vHatchName: string;
begin
  if not Assigned(CADEditor) then
    Exit;
  vHatchName := sSOLID;
  vNodeAttr := TsgNodeAttrib(ANode.GetAttributeByName(cnstXMLCmdHatchName));
  if Assigned(vNodeAttr) and (Length(vNodeAttr.ValueAsStr) > 0) then
    vHatchName := vNodeAttr.ValueAsStr;
  vAngle := 0;
  vScale := 1;
  if Assigned(ANode.GetAttributeByName(cnstXMLCmdAngle)) then
    vAngle := ANode.GetAttributeByName(cnstXMLCmdAngle).ValueAsDouble;
  if Assigned(ANode.GetAttributeByName(cnstXMLCmdPatternScale)) then
    vScale := ANode.GetAttributeByName(cnstXMLCmdPatternScale).ValueAsDouble;
  vPColor1 := nil;
  vPColor2 := nil;
  vNodeAttr := TsgNodeAttrib(ANode.GetAttributeByName(cnstXMLNames[xmlColor].Name));
  if Assigned(vNodeAttr) then
  begin
    vColor := StrToColorCAD(vNodeAttr.ValueAsStr);
    vPColor1 := @vColor;
  end;
  vHatch := TsgCADHatch(CADEditor.CreatingHatch(vHatchName, vScale, vAngle,
    vPColor1, vPColor2));
  if Assigned(vHatch) then
  begin
    CADImage.Converter.Loads(vHatch);
    vNode := AResult.Output.AddChildNV(cnstXMLCmdSelected);
    vNodeAttr := vNode.AddAttribNV(cnstXMLCmdHandle, '');
    vNodeAttr.ValueAsHandle := vHatch.Handle;
  end
  else
  begin
    vNode := AResult.Errors.AddChildNV(cnstXMLError);
    vNode.AddAttribNV(cnstXMLMessage, sXMLInterfaceHatchCreatingError);
  end;
end;

procedure TsgXMLIDE.CommandGetDrawingChanged(ANode: TsgNodeSample;
  AResult: IsgResultNode);
var
  vNodeAttr: TsgNodeAttrib;
  vNode: TsgNode;
begin
  if not Assigned(CADEditor) then
    Exit;
  vNode := AResult.Output;
  vNodeAttr := vNode.AddAttribNV(cnstXMLCmdChanged, '');
  vNodeAttr.ValueAsBool := CADEditor.IsChanged;
end;

procedure TsgXMLIDE.CommandSetDrawingChanged(ANode: TsgNodeSample;
  AResult: IsgResultNode);
var
  vNodeChange, vNodeMode, vNodeGuid: TsgNodeSample;
  vMode: Integer;
  vGuid: TGUID;
begin
  if not Assigned(CADEditor) then
    Exit;
  vNodeChange := ANode.GetAttributeByName(cnstXMLCmdChanged);
  if Assigned(vNodeChange) then
  begin
    vMode := 0;
    vGuid := cnstFailNewDrawing;
    vNodeMode := ANode.GetAttributeByName(cnstXMLCmdMode);
    if Assigned(vNodeMode) then
      vMode := vNodeMode.ValueAsInt;
    vNodeGuid := ANode.GetAttributeByName(cnstXMLCmdGuid);
    if Assigned(vNodeGuid) then
      vGuid := StringToGUID(vNodeGuid.ValueAsStr)
    else
    begin
      if vMode = 0 then
        vMode := 1;
    end;
    MainApplication.SetDrawingChange(vGuid, vMode, vNodeChange.ValueAsBool);
  end
  else
    DoMessageError(AResult.Errors, cnstXMLInterfaceSetValueNotFoundError, ANode);
end;

procedure TsgXMLIDE.CommandGetExternalFiles(ANode: TsgNodeSample;
  AResult: IsgResultNode);
var
  I: Integer;
  vList: TStringList;
  vNode: TsgNode;
begin
  vList := TStringList.Create;
  try
    FCADImage.GetExternalFiles(vList);
  finally
    if vList.Count = 0 then
    begin
      vNode  :=  AResult.Errors.AddChildNV(cnstXMLError);
      vNode.AddAttribNV(cnstXMLMessage).Value := sXMLInterfaceFileNotFoundError;
    end
    else
      vNode := AResult.Output;
      for I := 0 to vList.Count - 1 do
        vNode.AddChildNV(cnstXMLExternalFile).
          AddAttribNV(cnstXMLFileName).ValueAsStr := vList[I];
    vList.Free;
  end;
end;

procedure TsgXMLIDE.CommandGetView(ANode: TsgNodeSample;
  AResult: IsgResultNode);
var
  vNode: TsgNode;
  vVPort: TsgDXFVport;
begin
  vVPort :=  TsgCADImageAccess(FCADImage).CreateDefaultVPort(0);
  try
  vNode := vVPort.ToXML(AResult.Output);
  vNode.RemoveAttributeByName(cnstXMLNames[xmlHandle].Name);
  vNode.RemoveAttributeByName(cnstXMLNames[xmlName].Name);
  finally
    vVPort.Free;
  end;
end;

procedure TsgXMLIDE.CommandGetViewRect(ANode: TsgNodeSample;
  AResult: IsgResultNode);
var
  vNode: TsgNode;
begin
  if not Assigned(CADEditor) then
    Exit;
  vNode := AResult.Output.AddChildNV('VisibleArea');
  vNode.AddAttribNV(cnstXMLHeight).ValueAsInt := GetRectHeight(CADEditor.GetViewRect);
  vNode.AddAttribNV(cnstXMLWidth).ValueAsInt := GetRectWidth(CADEditor.GetViewRect);
  vNode := AResult.Output.AddChildNV('CADArea');
  vNode.AddAttribNV(cnstXMLCmdRect).ValueAsFRect := CADEditor.GetViewFRect;
end;

procedure TsgXMLIDE.CommandSetShowEntitySettings(ANode: TsgNodeSample;
  AResult: IsgResultNode);
var
  vNode: TsgNodeSample;
  vMethod: TsgShowEntityMethod;
  vPrecision: Double;
begin
  if not Assigned(CADEditor) then
    Exit;
  CADEditor.GetShowEntitySettings(vMethod, vPrecision);
  vNode := ANode.GetAttributeByName(cnstXMLCmdShowEntityMethod);
  if Assigned(vNode) then
    vMethod := TsgShowEntityMethod(vNode.ValueAsInt);
  vNode := ANode.GetAttributeByName(cnstXMLCmdShowEntityPrecision);
  if Assigned(vNode) then
    vPrecision := vNode.ValueAsDouble;
  CADEditor.SetShowEntitySettings(vMethod, vPrecision);
end;

procedure TsgXMLIDE.CommandSetSpecialCustomInsert(ANode: TsgNodeSample;
  AResult: IsgResultNode);
var
  vNodeColor, vNodeWeight: TsgNodeSample;
  vEntity: TsgDXFEntity;
begin
  if not Assigned(CADEditor) then
    Exit;
  vEntity := GetEntityByNode(ANode, AResult.Errors);
  if Assigned(vEntity) and (vEntity.EntType = ceInsert) then
  begin
    vNodeColor := ANode.GetAttributeByName(cnstXMLNames[xmlColor].Name);
    vNodeWeight := ANode.GetAttributeByName(cnstXMLNames[xmlLineWeight].Name);
    if Assigned(vNodeColor) or Assigned(vNodeWeight) then
    begin
      CADEditor.BeginEnt(vEntity, True);
      if Assigned(vNodeColor) then
        vEntity.ColorCAD := vNodeColor.ValueData.ValueAsColorCAD;
      if Assigned(vNodeWeight) then
        vEntity.LineWeight := vNodeWeight.ValueData.ValueAsDouble;
      CADEditor.EndEnt(vEntity);
      CADEditor.Changed;
    end;
    AddSelectEntity(vEntity, ANode);
    CADEditor.RecreateBlockAsTemplate;
  end;
end;

procedure TsgXMLIDE.CommandInvalidate(ANode: TsgNodeSample;
  AResult: IsgResultNode);
var
  vNode: TsgNodeSample;
  vBox: TFRect;
begin
  if not Assigned(CADEditor) then
    Exit;
  vNode := ANode.GetAttributeByName(cnstXMLCmdBox);
  vBox := cnstBadRect;
  if Assigned(vNode) then
    vBox := vNode.ValueAsFRect;
  if Assigned(CADEditor) then
  begin
    if IsBadRect(vBox) then
      CADEditor.Invalidate
    else
      CADEditor.InvalidateFRect(vBox)
  end;
end;

procedure TsgXMLIDE.CommandSetView(ANode: TsgNodeSample;
  AResult: IsgResultNode);
var
  vNodeVPort: TsgNodeSample;
  vVPort: TsgDXFVport;
begin
  if not Assigned(CADEditor) then
    Exit;
  vVPort := TsgDXFVport.Create;
  try
    vNodeVPort := ANode.GetChildByName(TsgDXFVportAccess(vVPort).GetNodeName);
    if Assigned(vNodeVPort) then
    begin
      vVPort.FromXML(vNodeVPort, AResult);
      FCADImage.Converter.ActiveVPort.AssignEntity(vVPort);
      FCADImage.Converter.ActiveVPort := FCADImage.Converter.ActiveVPort;
      CADEditor.OpenVPort;
    end;
  finally
    vVPort.Free;
  end;
end;

procedure TsgXMLIDE.CommandSetViewRect(ANode: TsgNodeSample;
  AResult: IsgResultNode);
var
  vNodeRect: TsgNodeSample;
  vRect: TFRect;
begin
  if not Assigned(CADEditor) then
    Exit;
  vNodeRect := ANode.GetAttributeByName(cnstXMLCmdRect);
  if Assigned(vNodeRect) then
  begin
    vRect := vNodeRect.ValueAsFRect;
    CADEditor.ShowCADRect(vRect);
  end;
end;

procedure TsgXMLIDE.CommandShowSelectEntities(ANode: TsgNodeSample;
  AResult: IsgResultNode);
var
  vMethod: TsgShowEntityMethod;
  vPrecision: Double;
begin
  if not Assigned(CADEditor) then
    Exit;
  CADEditor.GetShowEntitySettings(vMethod, vPrecision);
  try
    CommandSetShowEntitySettings(ANode, AResult);
    FCADEditor.ShowSelectEntities;
  finally
    CADEditor.SetShowEntitySettings(vMethod, vPrecision);
  end;
end;

destructor TsgXMLIDE.Destroy;
begin
  Application.OnException := FOnApplicationExeptionPrev;
  FSelectedHandles := nil;
  if FInstructions <> nil then
    FreeAndNil(FInstructions);
  FXMLCommParameterList.Free;
  FreeAndNil(FXMLInp);
  FreeAndNil(FXMLOut);
  inherited;
end;

procedure TsgXMLIDE.OnButtonMenuClick(const AHandle: THandle;
  const ACaption: string);
begin
  OnEventCustom(xeOnButtonClick, nil, nil,
    [cnstXMLCmdCaption, cnstXMLCmdHandle], [ACaption, HandleToStr(AHandle)], False);
end;

(*procedure TsgXMLIDE.DoTrialMessage;
{$IFDEF SGAPPPROTECT}
const
  cnstTrialMessage1: string = 'The trial period is over.';
  cnstTrialMessage2: string = 'Please contact us at info@cadsofttools.com';
{$IFDEF SG_CADEDITORX}
  function AddText(const AText: string; const H, X, Y, Z: Double): TFRect;
  var
    vText: TsgDXFText;
  begin
    vText := TsgDXFText.Create;
    FCADImage.CurrentLayout.AddEntity(vText);
    vText.Layer := FCADImage.Converter.LayerByName(cnstTrialMessage1);
    vText.Layer.ColorCAD := MakeColorCAD(acRGBColor, clRed);
    vText.Layer.Locked := True;
    vText.Layer.Visible := True;
    vText.Layer.Visibility := True;
    vText.Text := AText;
    vText.ColorCAD := vText.Layer.ColorCAD;
    vText.Height := H;
    vText.Point := MakeFPoint(X, Y, Z);
    FCADImage.Converter.Loads(vText);
    Result := vText.Box;
  end;

  function AddPoly(const APoints: array of TFPoint; const AClosed: Boolean): TFRect;
  var
    I: Integer;
    vPoly: TsgDXFPolyline;
  begin
    vPoly := TsgDXFPolyline.Create;
    FCADImage.CurrentLayout.AddEntity(vPoly);
    vPoly.ColorCAD := MakeColorCAD(acRGBColor, clRed);
    vPoly.Layer := FCADImage.Converter.LayerByName(cnstTrialMessage1);
    for I := Low(APoints) to High(APoints) do
      AddVertexInPolyline(vPoly, APoints[I]);
    vPoly.Closed := AClosed;
    FCADImage.Converter.Loads(vPoly);
    Result := vPoly.Box;
  end;

var
  vExtents: TFRect;
  vHeight: Double;
  vBox: TFRect;
{$ENDIF}
begin
{$IFDEF SG_CADEDITORX}
  if Assigned(FCADImage) then
  begin
    vExtents := FCADImage.CurrentLayout.Box;
    if IsBadRect(vExtents) then
      vExtents := MakeFRect(0, 210, 0, 297, 0, 0);
    vHeight := Abs(vExtents.Top - vExtents.Bottom);
    if vHeight <= 0 then
      vHeight := 2.5;
    vBox := cnstBadRect;
    UnionFRect(vBox, AddText(cnstTrialMessage1, vHeight * 0.35, vExtents.Left, vExtents.Bottom + vHeight * 0.1, vExtents.Z1));
    UnionFRect(vBox, AddText(cnstTrialMessage2, vHeight * 0.35, vExtents.Left, vExtents.Bottom + vHeight * 0.5, vExtents.Z1));
    vBox.Top := vExtents.Top;
    vBox.Bottom := vExtents.Bottom;
    AddPoly([vBox.TopLeft, MakeFPoint(vBox.Right, vBox.Top, vBox.Z1),
      vBox.BottomRight, MakeFPoint(vBox.Left, vBox.Bottom, vBox.Z2),
      vBox.TopLeft], True);
    if Assigned(FCADImage) then
    begin
      CADEditor.CalcExtents;
      CADEditor.FitToSize;
    end;
  end;
{$ENDIF}
  DoMessageError(FRootOut, cnstTrialMessage1 + ' ' + cnstTrialMessage2, nil);
{$ELSE}
begin
{$ENDIF}
end;//*)

procedure TsgXMLIDE.DoXMLParserError(const AMessage: string;
  const APosition: PPoint);
var
  vError: TsgNode;
begin
  CreateResultNode(cnstXMLParserError);
  vError := GetIResultNode.Errors.AddChildNV(cnstXMLError);
  vError.AddAttribNV(cnstXMLCmdMessage, AMessage);
  if APosition <> nil then
    vError.AddAttribNV(cnstXMLPosition).ValueData.ValueAsPoint := APosition^;
end;

procedure TsgXMLIDE.CommandEditorAttribs(ANode: TsgNodeSample;
  AResult: IsgResultNode);
var
  vNode: TsgNodeSample;
begin
  if not Assigned(CADEditor) then
    Exit;
  vNode := ANode.GetAttributeByName(cnstXMLCmdReadOnly);
  if Assigned(vNode) then
    CADEditor.ReadOnly := vNode.ValueAsBool;
  CommandSetShowEntitySettings(ANode, AResult);
end;

procedure TsgXMLIDE.CommandGetBox(ANode: TsgNodeSample;
  AResult: IsgResultNode);
var
  vEntity: TsgDXFEntity;
  I: Integer;
  vBox: TFRect;
  vList: TsgInt64List;
  vEntities: TList;
  vSelectedEntities: TList;
  vBoxCAD: Boolean;
  vBoxCADAttrib: TsgNodeSample;
  vResult: TsgNode;

  function GetBoxByEntityList(const AEntities: TList): TFRect;
  var
    I: Integer;
  begin
    Result := cnstBadRect;
    if AEntities.Count > 0 then
      for I := AEntities.Count - 1 downto 0 do
        UnionFRect(Result,TsgDXFEntity(AEntities[I]).Box);
  end;

  procedure SetBox(var ABox: TFRect);
  begin
    if vEntities.Count > 0 then
    begin
      if vEntities.Count > 1 then
        ABox := GetBoxByEntityList(vEntities)
      else
        ABox := vEntity.Box;
    end
    else
      ABox := FCADImage.CurrentLayout.Box;
  end;

begin
  vResult := AResult.Output;
  vBoxCADAttrib := ANode.GetAttributeByName(cnstXMLCmdBoxCad);
  if Assigned(vBoxCADAttrib) then
  begin
    vBoxCAD := vBoxCADAttrib.ValueAsBool;
    if vBoxCAD then
    begin
      vResult.AddAttribNV(cnstXMLHeight).ValueAsDouble := FCADImage.AbsHeight;
      vResult.AddAttribNV(cnstXMLWidth).ValueAsDouble := FCADImage.AbsWidth;
      vBox := FCADImage.Extents;
    end
    else
      vBox := FCADImage.CurrentLayout.Box;
    vResult.AddAttribNV(cnstXMLCmdBox).ValueAsFRect := vBox;
    Exit;
  end;
  vBox := cnstBadRect;
  vList := TsgInt64List.Create;
  vEntities := TList.Create;
  try
    vEntity := GetEntityByNode(ANode, AResult.Errors, vList, vEntities);
    if (not Assigned(vEntity)) then
    begin // Process selecter entity
      if ANode.AttributeNodesCount > 0 then
        Exit;
      if FSelectedHandles.Count > 0 then
      begin
        for I := 0 to FSelectedHandles.Count - 1 do
        begin
          vEntity := FCADImage.Converter.FindObjByHandle(FSelectedHandles[I]);
          if vEntity = nil then
            Continue;
          vEntities.Add(vEntity);
        end;
      end;

      if Assigned(CADEditor) then
      begin
        vSelectedEntities := TList.Create;
        try
          CADEditor.BeforeChange(vSelectedEntities);
          try
            if vSelectedEntities.Count > 0 then
            begin
              for I := 0 to vSelectedEntities.Count - 1 do
                vEntities.Add(vSelectedEntities[I]);
            end;
          finally
            CADEditor.AfterChange;
          end;
        finally
          vSelectedEntities.Free;
        end;
      end;
      if vEntities.Count > 0 then
        vEntity := vEntities[0];
      SetBox(vBox);
    end
    else
      SetBox(vBox);
  finally
    vList.Free;
    vEntities.Free;
  end;

  vResult.AddAttribNV(cnstXMLCmdBox).ValueAsFRect := vBox;
end;

procedure TsgXMLIDE.CommandGetCADPoint(ANode: TsgNodeSample; AResult: IsgResultNode);
var
  vAtributePoint: TsgNodeSample;
  vPoint: TFPoint;
begin
  if Assigned(FCADEditor) then
  begin
    vAtributePoint := ANode.GetAttributeByName(cnstXMLCmdPoint);
    if Assigned(vAtributePoint) then
    begin
      vPoint := CADEditor.GetImageCoords(vAtributePoint.ValueData.ValueAsPoint);
      AResult.Output.AddAttribNV(cnstXMLCmdPoint).ValueAsFPoint := vPoint;
    end
    else
      DoMessageError(AResult.Errors, sXMLInterfaceEntityNotSelectError, ANode);
  end;
end;

procedure TsgXMLIDE.CommandGet(ANode: TsgNodeSample;
   AResult: IsgResultNode);
var
  vOut: TsgNode;
  vEntity: TsgDXFEntity;
  I: Integer;
  vBox: TFRect;
  vList: TsgInt64List;
  vEntities: TList;
  vMode: TsgXMLModes;
  vModeAttrib: TsgNodeSample;
  vApplyFilter: Boolean;
begin
  vOut := AResult.Output;
  vList := TsgInt64List.Create;
  vEntities := TList.Create;
  try
    vMode := cnstDefaultXMLMode + [xmAddSectionEntities];
    vModeAttrib := ANode.GetAttributeByName(cnstXMLMode);
    if Assigned(vModeAttrib) then
    // ModeAttrib.ValueAsInt is bit coded
    // 0 bit xmAddSubEntities
    // 1 bit xmAddSectionEntities
    // 2 bit xmNoSubEntitiesNode
    // 3 bit xmCallHelp
    // 4 bit xmOnlyChildNodes
    vMode := sgIntToXMLModes(vModeAttrib.ValueAsInt);
    vApplyFilter := GetEntitiesByNodeWithFilter(ANode, AResult.Errors, vList, vEntities);
    vEntity := nil;
    if vEntities.Count > 0 then
      vEntity := vEntities.First;
    if not Assigned(vEntity) then
    begin
      if not vApplyFilter then
      begin
        FCADImage.Converter.ToXML(vOut, vMode);
        vBox := FCADImage.CurrentLayout.Box;
      end;
    end
    else
    begin
      if vEntities.Count > 1 then
      begin
        vBox := cnstBadRect;
        for I := vEntities.Count - 1 downto 0 do
        begin
          TsgDXFEntity(vEntities[I]).ToXML(vOut, vMode);
          UnionFRect(vBox,TsgDXFEntity(vEntities[I]).Box);
        end;
      end
      else
      begin
        vBox := vEntity.Box;
        vEntity.ToXML(vOut, vMode);
      end;
    end;
  finally
    vList.Free;
    vEntities.Free;
  end;
  if not IsBadRect(vBox) then
    vOut.AddAttribNV(cnstXMLCmdBox).ValueAsFRect := vBox;
end;

procedure TsgXMLIDE.CommandAdd(ANode: TsgNodeSample;
  AResult: IsgResultNode);
begin
  FCADImage.Converter.FromXML(ANode, AResult);
  if Assigned(CADEditor) then
    CADEditor.Changed;
end;

procedure TsgXMLIDE.CommandFitToSize(ANode: TsgNodeSample;
  AResult: IsgResultNode);
begin
  if not Assigned(CADEditor) then
    Exit;
  CADEditor.CalcExtents;
  CADEditor.FitToSize;
end;

procedure TsgXMLIDE.CommandSelect(ANode: TsgNodeSample;
   AResult: IsgResultNode);
var
  I: Integer;
  vEntity: TsgDXFEntity;
  vIndex: Integer;
  AList: TsgInt64List;
  AEntities: TList;
  vSelect, vGroup, vMarker: Boolean;
  vMode: Integer;

  procedure DoMsgError(const AEntity: TsgDXFEntity; const AGroup: Boolean);
  var
    I: Integer;
    vNode: TsgNode;
  begin
    if AGroup then
      DoMessageError(AResult.Errors, sXMLInterfaceEntityNotSelectError, ANode)
    else
      if Assigned(AEntity) then
      begin
        vNode := AEntity.ToXML(AResult.Result, [xmNoSubEntitiesNode]);
        if Assigned(vNode.Childs) then
          vNode.Childs.ClearNodes;
        I := 0;
        while I < vNode.AttributeNodesCount do
        begin
          case GetXMLId(vNode.AttributeNodes[I].Name) of
            xmlName, xmlHandle:
              Inc(I);
          else
            vNode.Attributes.Delete(I);
          end;
        end;
      end
      else
        DoMessageError(AResult.Errors, sXMLInterfaceEntityNotFoundError, ANode);
  end;

begin
  vSelect := False;
  vGroup := False;
  vEntity := nil;
  AList := TsgInt64List.Create;
  AEntities := TList.Create;
  try
    GetEntitiesByNodeWithFilter(ANode, AResult.Errors, AList, AEntities);
    if AEntities.Count > 0 then
      vEntity := AEntities.First;
    if AEntities.Count > 0 then
    begin
      if AEntities.Count > 1 then
      begin
        vGroup := True;
        vEntity := nil;
      end;
      vMarker := GetMarkerSelectMode(ANode);
      if not Assigned(CADEditor) then
        vMarker := False;
      vSelect := True;
      if vMarker then
      begin
        vSelect := False;
        if Assigned(CADEditor)then
        begin
          vMode := GetAttributeInt(ANode, cnsTXMLCommParameters[cpSelectMode].Name, 0);
          vSelect := SetSelectEntities(AEntities, ANode, vMode);
        end;
      end
      else
      begin
        for I := 0 to AEntities.Count - 1 do
        begin
          vIndex := FSelectedHandles.IndexOf(TsgDXFEntity(AEntities[I]).Handle);
          if vIndex < 0 then
            FSelectedHandles.Add(TsgDXFEntity(AEntities[I]).Handle);
        end;
      end;
    end;
  finally
    AList.Free;
    AEntities.Free;
    if not vSelect then
      DoMsgError(vEntity, vGroup);
  end;
end;

procedure TsgXMLIDE.CommandUnSelect(ANode: TsgNodeSample;
  AResult: IsgResultNode);
var
  I, vIndex: Integer;
  AList: TsgInt64List;
  AEntities: TList;
  vMarker: Boolean;
begin
  AList := TsgInt64List.Create;
  AEntities := TList.Create;
  try
    GetEntityByNode(ANode, AResult.Errors, AList, AEntities);
    vMarker := GetMarkerSelectMode(ANode);
    if not Assigned(CADEditor) then
      vMarker := False;
    if AEntities.Count > 0 then
    begin
      if vMarker then
      begin
        if Assigned(CADEditor) then
          SetSelectEntities(AEntities, ANode, 1);
      end
      else
      begin
        for I := 0 to AEntities.Count - 1 do
        begin
          vIndex := FSelectedHandles.IndexOf(TsgDXFEntity(AEntities[I]).Handle);
          if vIndex >= 0 then
            FSelectedHandles.Delete(vIndex);
        end;
      end;
    end
    else
    begin
      if vMarker then
        CADEditor.SetSelectedEntities(nil)
      else
        FSelectedHandles.Clear;
    end;
  finally
    AList.Free;
    AEntities.Free;
  end;
end;

procedure TsgXMLIDE.CommandApply(ANode: TsgNodeSample;
  AResult: IsgResultNode);
var
  vOldBox: TFRect;
  I: Integer;
  vEntity: TsgDXFEntity;
  vSelectedEntities: TList;
  vChanged: Boolean;
  vMode: TsgNodeSample;
begin
  vMode := ANode.GetAttributeByName(cnstXMLMode);
  if Assigned(vMode) and (AnsiUpperCase(vMode.ValueAsStr) = cnstXmlCmdModeInterfacce) then
    CommandApplyXML(ANode, AResult, True)
  else
  begin
    if FSelectedHandles.Count > 0 then
    begin
      vOldBox := cnstBadRect;
      vChanged := False;
      for I := 0 to FSelectedHandles.Count - 1 do
      begin
        vEntity := FCADImage.Converter.FindObjByHandle(FSelectedHandles[I]);
        if vEntity = nil then
          Continue;
        UnionFRect(vOldBox, vEntity.Box);
        if TsgDXFEntity(vEntity) is TsgDXFBlock then
          TsgDXFBlock(vEntity).IsLoaded := False;
        vEntity.FromXML(ANode, AResult);
        FCADImage.Converter.Loads(vEntity);
        if not vChanged then
          vChanged := True;
        UnionFRect(vOldBox, vEntity.Box);
      end;
      if Assigned(CADEditor) then
      begin
        if not IsBadRect(vOldBox) then
          CADEditor.InvalidateFRect(vOldBox)
        else
          if vChanged then
            CADEditor.Invalidate;
      end;
    end;
    if Assigned(CADEditor) then
    begin
      vSelectedEntities := TList.Create;
      try
        CADEditor.BeforeChange(vSelectedEntities);
        try
          if vSelectedEntities.Count > 0 then
          begin
            for I := 0 to vSelectedEntities.Count - 1 do
            begin
              if TsgDXFEntity(vSelectedEntities[I]) is TsgDXFBlock then
                TsgDXFBlock(vSelectedEntities[I]).IsLoaded := False;
              TsgListObject(vSelectedEntities[I]).FromXML(ANode, AResult);
              FCADImage.Converter.Loads(vSelectedEntities[I]);
            end;
          end;
        finally
          CADEditor.AfterChange;
        end;
      finally
        vSelectedEntities.Free;
      end;
    end;
  end;
end;

procedure TsgXMLIDE.CommandApplyXML(ANode: TsgNodeSample; AResult: IsgResultNode; const AUseChilds: Boolean);
var
  I: Integer;
  vInXML: string;
begin
  if Assigned(MainApplication) then
  begin
    if AUseChilds then
    begin
      for I := 0 to ANode.ChildNodesCount - 1 do
        CommandApplyXML(ANode.ChildNodes[I], AResult, False);
    end
    else
    begin
      vInXML := SaveNodeToXMLString(ANode);
      MainApplication.ApplyXML(vInXML, Self);
    end;
  end
  else
    DoMessageError(AResult.Errors, '', ANode);
end;

function TsgXMLIDE.FilterElement(const AEnt: TsgDXFEntity;
  const AFindEnt: TsgDXFEntity): Boolean;
begin
  Result := AEnt = AFindEnt;
end;

function TsgXMLIDE.FilterCurElement(const AEnt: TsgDXFEntity;
  const AFindEnt: TsgDXFEntity): Boolean;
var
  vMLineStyle: TsgMLineStyle;
  vMLineEnt: TsgMLineEntry;
  I: Integer;
begin
  Result := False;
  if AEnt = nil then Exit;
  if AEnt is TsgMLineStyle then
  begin
    vMLineStyle := TsgMLineStyle(AEnt);
    for I := 0 to vMLineStyle.Count - 1 do
    begin
      vMLineEnt := vMLineStyle.Entries[I];
      if Assigned(vMLineEnt.LineType) then
        Result := Result or FilterElement(vMLineEnt.LineType, AFindEnt);
    end;
  end;
  if AEnt is TsgDXFLayer then
  begin
    if TsgDXFLayer(AEnt).XrefLink then
      Result := Result or FilterElement(AEnt, AFindEnt);
  end;
  if Assigned(AEnt.Layer) then
    Result := Result or FilterElement(AEnt.Layer, AFindEnt);
  if Assigned(AEnt.LineType) then
    Result := Result or FilterElement(AEnt.LineType, AFindEnt);
  case AEnt.EntType of
    ceDimension:
      begin
        if Assigned(TsgDXFDimension(AEnt).Style) then
          Result := Result or FilterElement(TsgDXFDimension(AEnt).Style, AFindEnt);
        if Assigned(TsgDXFDimension(AEnt).TextStyle) then
          Result := Result or FilterElement(TsgDXFDimension(AEnt).TextStyle, AFindEnt);
        if Assigned(TsgDXFInsert(AEnt).Block) then
          Result := Result or FilterElement(TsgDXFInsert(AEnt).Block, AFindEnt);
        if FilterBlockEnt(TsgDXFInsert(AEnt).Block, AFindEnt) then
          Result := True;
      end;
    ceText:
      if Assigned(TsgDXFText(AEnt).Style) then
        Result := Result or FilterElement(TsgDXFText(AEnt).Style, AFindEnt);
    ceMText:
      if Assigned(TsgDXFMText(AEnt).Style) then
        Result := Result or FilterElement(TsgDXFMText(AEnt).Style, AFindEnt);
    ceInsert:
      begin
        if Assigned(TsgDXFInsert(AEnt).Block) then
          Result := Result or FilterElement(TsgDXFInsert(AEnt).Block, AFindEnt);
        if FilterBlockEnt(TsgDXFInsert(AEnt).Block, AFindEnt) then
          Result := True;
      end;
    ceLeader:
      if Assigned(TsgDXFLeader(AEnt).DimStyle) then
        Result := Result or FilterElement(TsgDXFLeader(AEnt).DimStyle, AFindEnt);
    ceTolerance:
      if Assigned(TsgDXFTolerance(AEnt).DimStyle) then
        Result := Result or FilterElement(TsgDXFTolerance(AEnt).DimStyle, AFindEnt);
    ceMLine:
      if Assigned(TsgCADMLine(AEnt).Style) then
        Result := Result or FilterElement(TsgCADMLine(AEnt).Style, AFindEnt);
  end;
end;

function TsgXMLIDE.FilterBlockEnt(const ABlock: TsgDXFBlock;
  const AFindEnt: TsgDXFEntity): Boolean;
var
  I: Integer;
begin
  Result := False;
  if ABlock = nil then Exit;
  for I := 0 to ABlock.Count - 1 do
  begin
    Result := FilterCurElement(ABlock.Entities[I], AFindEnt);
    if Result then
      Break;
  end;
end;

function TsgXMLIDE.ScanBlocks(const AGroup: TsgDXFGroup;
  const AFindEnt: TsgDXFEntity): Boolean;
var
  I: Integer;
begin
  Result := False;
  if AGroup = nil then Exit;
  for I := 0 to AGroup.Count - 1 do
    if AGroup.Entities[I] is TsgDXFBlock then
    begin
      Result := FilterBlockEnt(TsgDXFBlock(AGroup.Entities[I]), AFindEnt);
      if Result then
        Break;
    end;
end;

function TsgXMLIDE.ScanElements(const AGroup: TsgDXFGroup;
  const AFindEnt: TsgDXFEntity): Boolean;
var
  I: Integer;
  vEnt: TsgDXFEntity;
begin
  Result := False;
  if AGroup = nil then Exit;
  for I := 0 to AGroup.Count - 1 do
  begin
    vEnt := AGroup.Entities[I];
    Result := FilterCurElement(vEnt, AFindEnt);
    if Result then
      Break;
  end;
end;

procedure TsgXMLIDE.InitRoot(var AParser: TsgParser; var ARoot: TsgNode);
begin
  AParser := TsgParser.Create;
  ARoot := AParser.CreateRootNode(cnstXMLRootNode, True);
  ARoot.AddAttribNV(cnstXMLCmdVersion).ValueData.ValueAsVersion :=
    cnstXMLIntfaceVersion;
end;

function TsgXMLIDE.IsCanDelete(AObject: TsgDXFEntity; var AParent: TsgDXFGroup): Boolean;
const
  cnstGroupFind: array[0..3] of TConvSection = (csEntities, csBlocks, csLayers,
    csMLineStyles);
var
  vGroup: TsgDXFGroup;
  vBlock: TsgDXFBlock;
  vStyle: TsgDXFStyle;
  vLayer: TsgDXFLayer;
  vDimStyle: TsgDXFDimensionStyle;
  vLineType: TsgDXFLineType;
  vMLineStyle: TsgMLineStyle;
  vBlockIsWork, vResult: Boolean;
  I: Integer;
begin
  AParent := nil;
  Result := False;
  if AObject is TsgDXFBlock then
  begin
    vGroup := FCADImage.Converter.Sections[csBlocks];
    for I := 0 to vGroup.Count - 1 do
    if vGroup.Entities[I] is TsgDXFBlock then
    begin
      vBlock := TsgDXFBlock(vGroup.Entities[I]);
      if vBlock = AObject then
      begin
        vBlockIsWork := (vBlock.Layout <> nil) or (vBlock.IsBlockIntetnal) or (Copy(vBlock.Name, 1, 1) = '*')
          or (Copy(vBlock.Name, 1, 1) = '_');
        if not vBlockIsWork then
          Result := True;
        AParent := vGroup;
      end;
    end;
  end;

  if AObject is TsgDXFStyle then
  begin
    vGroup := FCADImage.Converter.Sections[csStyles];
    for I := 0 to vGroup.Count - 1 do
    if vGroup.Entities[I] is TsgDXFStyle then
    begin
      vStyle := TsgDXFStyle(vGroup.Entities[I]);
      if vStyle = AObject then
      begin
        Result := True;
        AParent := vGroup;
      end;
    end;
  end;

  if AObject is TsgDXFLayer then
  begin
    vGroup := FCADImage.Converter.Sections[csLayers];
    for I := 0 to vGroup.Count - 1 do
    if vGroup.Entities[I] is TsgDXFLayer then
    begin
      vLayer := TsgDXFLayer(vGroup.Entities[I]);
      if vLayer = AObject then
      begin
        if (vLayer.Name = sLayerDefPoints) then
          Result := False
        else
          Result := True;
        AParent := vGroup;
      end;
    end;
  end;

  if AObject is TsgDXFDimensionStyle then
  begin
    vGroup := FCADImage.Converter.Sections[csDimStyles];
    for I := 0 to vGroup.Count - 1 do
    if vGroup.Entities[I] is TsgDXFDimensionStyle then
    begin
      vDimStyle := TsgDXFDimensionStyle(vGroup.Entities[I]);
      if vDimStyle = AObject then
      begin
        Result := True;
        AParent := vGroup;
      end;
    end;
  end;

  if AObject is TsgDXFLineType then
  begin
    vGroup := FCADImage.Converter.Sections[csLTypes];
    for I := 0 to vGroup.Count - 1 do
    if vGroup.Entities[I] is TsgDXFLineType then
    begin
      vLineType := TsgDXFLineType(vGroup.Entities[I]);
      if vLineType = AObject then
      begin
        if (vLineType.Name = sByBlock) or (vLineType.Name = sByLayer) or (vLineType.Name = sContinuous) then
          REsult := False
        else
          Result := True;
        AParent := vGroup;
      end;
    end;
  end;

  if AObject is TsgMLineStyle then
  begin
    vGroup := FCADImage.Converter.Sections[csMLineStyles];
    for I := 0 to vGroup.Count - 1 do
    if vGroup.Entities[I] is TsgMLineStyle then
    begin
      vMLineStyle := TsgMLineStyle(vGroup.Entities[I]);
      if vMLineStyle = AObject then
      begin
        Result := True;
        AParent := vGroup;
      end;
    end;
  end;

  if not Result then
    Exit;

  for I := Low(cnstGroupFind) to High(cnstGroupFind) do
  begin
    if cnstGroupFind[I] = csBlocks then
      vResult :=ScanBlocks(CADImage.Converter.Sections[csBlocks], AObject)
    else
      vResult := ScanElements(CADImage.Converter.Sections[cnstGroupFind[I]], AObject);
    if vResult then
    begin
      Result := False;
      Exit;
    end;
  end;
end;

procedure TsgXMLIDE.CommandDelete(ANode: TsgNodeSample; AResult: IsgResultNode);
var
  vParent: TsgDXFGroup;
  I: Integer;
  vEntity: TsgDXFEntity;
begin
  if FSelectedHandles.Count > 0 then
  begin
    I := 0;
    while I < FSelectedHandles.Count do
    begin
      vEntity := FCADImage.Converter.FindObjByHandle(FSelectedHandles[I]);
      if vEntity = nil then
      begin
        Inc(I);
        Continue;
      end;

      if IsCanDelete(vEntity, vParent) then
      begin
        FSelectedHandles.Delete(I);
        if Assigned(vParent) then
        begin
          if Assigned(CADEditor) then
            CADEditor.BeginEnt(vEntity, False);
          try
            vParent.RemoveEntity(vEntity);
            AResult.Output.AddChildNV(cnstXMLDeleted).
              AddAttribNV(cnstXMLNames[xmlHandle].Name).ValueAsHandle := vEntity.Handle;
          finally
            if Assigned(CADEditor) then
              CADEditor.EndEnt(nil);
          end;
        end;
      end
      else
      begin
      begin
        DoMessageError(AResult.Errors,Format(cnstXMLCmdCommandDeleteError,
          [HandleToStr(vEntity.Handle)]), ANode);
        Inc(I);
      end;
      end;
    end;
    if Assigned(CADEditor) then
      CADEditor.Invalidate;
  end;
  if Assigned(FCADEditor) then
    CADEditor.DeleteEntities;
end;

procedure TsgXMLIDE.CommandLoad(ANode: TsgNodeSample; AResult: IsgResultNode);
var
  vFileName, vExt: string;
  vStream: TStream;
  vFileNameAttrib, vBase64Attrib, vFormatAttrib: TsgNodeSample;

  procedure DoMsgError(const AMessage: string);
  begin
    CADImage := nil;
    DoMessageError(AResult.Errors, AMessage, ANode);
  end;

  function DoAfterOpen: Boolean;
  var
    I: Integer;
    vGuid: TGUID;
  begin
    vGuid := MainApplication.CurrentDrawingGuid;
    I := 0;
    Result := False;
    while (I < MainApplication.DrawingsCount) and not Result do
      if not IsEqualGUID(MainApplication.DrawingGuid[I].Guid, vGuid) then
        Inc(I)
      else
        Inc(Result);
    if Result then
      DrawingXMLDataToNode(MainApplication.DrawingGuid[I], AResult.Output);
  end;

begin
  if not Assigned(MainApplication) then
  begin
    DoMessageError(AResult.Errors, sXMLInterfaceMainApplicationError, ANode);
    Exit;
  end;

  vFileNameAttrib := ANode.GetAttributeByName(cnstXMLCmdFile);
  if Assigned(vFileNameAttrib) then
    vFileName := vFileNameAttrib.ValueAsStr
  else
    vFileName := '';
  if Length(vFileName) > 0 then
    vFileName := Trim(vFileName);
  vBase64Attrib := ANode.GetAttributeByName(cnstXMLCmdBase64);
  if Assigned(vBase64Attrib) then
  begin
    vStream := TMemoryStream.Create;
    try
      DecodeBase64(vBase64Attrib.ValueAsStr, nil, vStream);
      vFormatAttrib := ANode.GetAttributeByName(cnstXMLFormat);
      if Assigned(vFormatAttrib) then
        vExt := vFormatAttrib.ValueAsStr
      else
        vExt := '';
      if (vExt <> '') and (vExt[1] <> '.') then
        vExt := '.' + vExt;
      vStream.Position := 0;
      if Assigned(MainApplication) then
      begin
        if MainApplication.LoadFromStream(vStream, vExt) then
          DoAfterOpen
        else
          DoMsgError(sXMLInterfaceFileLoadError);
      end;
    finally
      vStream.Free;
    end;
  end
  else
    if FileExists(vFileName) or (Copy(vFileName, 1, 4) = 'http') then
    begin
      if Assigned(MainApplication) then
      begin
        if MainApplication.OpenFile(vFileName, True) then
          DoAfterOpen
        else
          DoMsgError(sXMLInterfaceFileLoadError);
      end;
    end
    else
      DoMsgError(sXMLInterfaceFileNotFoundError);
end;

procedure TsgXMLIDE.CommandUnLoad(ANode: TsgNodeSample; AResult: IsgResultNode);
var
  vAttrib: TsgNodeSample;
  vGuidNode: TsgNodeSample;
  vGuid: TGUID;
  vOk: Boolean;
  vIndex: Integer;
begin
  if not Assigned(MainApplication) then
  begin
    DoMessageError(AResult.Errors, sXMLInterfaceMainApplicationError, ANode);
    Exit;
  end;

  vOk := False;
  vGuidNode := ANode.GetAttributeByName(cnstXMLCmdGuid);
  if Assigned(vGuidNode) then
  begin
    try
      vGuid := StringToGUID(vGuidNode.ValueAsStr);
      if Assigned(MainApplication) then
      begin
        MainApplication.CurrentDrawingGuid := vGuid;
        if IsEqualGUID(MainApplication.CurrentDrawingGuid, vGuid) then
          vOk := True;
      end;
    except on EConvertError do
      DoMessageError(AResult.Errors, sXMLInterfaceInvalidGuid, vGuidNode);
    end;
  end;

  if not vOk then
  begin
    vAttrib := ANode.GetAttributeByName(cnstXMLCmdCurrent);
    if Assigned(vAttrib) then
    begin
      vGuid := MainApplication.CurrentDrawingGuid;
      vOk := True;
    end
  end;

  if not vOk then
  begin
    vAttrib := ANode.GetAttributeByName(cnstXMLCmdIndex);
    if Assigned(vAttrib) and Assigned(MainApplication) then
    begin
      vIndex := vAttrib.ValueAsInt;
      if (vIndex >= 0) and (vIndex < MainApplication.DrawingsCount) then
      begin
        vGuid := MainApplication.DrawingGuid[vIndex].Guid;
        vOk := True;
      end
      else
        DoMessageError(AResult.Errors, sXMLInterfaceInvalidIndex, vAttrib);
    end;
  end;

  if vOk then
    MainApplication.CloseDrawingGuid(vGuid);
end;

procedure TsgXMLIDE.CommandSwitchDrawing(ANode: TsgNodeSample;
  AResult: IsgResultNode);
var
  vNode: TsgNodeSample;
  vIndex: Integer;
  vGuid: TGUID;
  vOk: Boolean;
begin
  if not Assigned(MainApplication) then
  begin
    DoMessageError(AResult.Errors, sXMLInterfaceMainApplicationError, ANode);
    Exit;
  end;

  vOk := False;
  vNode := ANode.GetAttributeByName(cnstXMLCmdGuid);
  if Assigned(vNode) then
  begin
    try
      vGuid := StringToGUID(vNode.ValueAsStr);
      if Assigned(MainApplication) then
      begin
        MainApplication.CurrentDrawingGuid := vGuid;
        if IsEqualGUID(MainApplication.CurrentDrawingGuid, vGuid) then
          vOk := True;
      end;
    except on EConvertError do
      DoMessageError(AResult.Errors, sXMLInterfaceInvalidGuid, vNode);
    end;
  end;

  if not vOk then
  begin
    vNode := ANode.GetAttributeByName(cnstXMLCmdIndex);
    if Assigned(vNode) and Assigned(MainApplication) then
    begin
      vIndex := vNode.ValueAsInt;
      if (vIndex >= 0) and (vIndex < MainApplication.DrawingsCount) then
      begin
        vGuid := MainApplication.DrawingGuid[vIndex].Guid;
        MainApplication.CurrentDrawingGuid := vGuid;
        if IsEqualGUID(MainApplication.CurrentDrawingGuid, vGuid) then
          vOk := True;
      end
      else
        DoMessageError(AResult.Errors, sXMLInterfaceInvalidIndex, vNode);
    end;
  end;

  if not vOk then
    DoMessageError(AResult.Errors, cnstXMLValueError, ANode);
end;

procedure TsgXMLIDE.CommandGetDrawingsList(ANode: TsgNodeSample;
  AResult: IsgResultNode);
var
  I: Integer;
begin
  if not Assigned(MainApplication) then
  begin
    DoMessageError(AResult.Errors, sXMLInterfaceMainApplicationError, ANode);
    Exit;
  end;
  for I := 0 to MainApplication.DrawingsCount - 1 do
    DrawingXMLDataToNode(MainApplication.DrawingGuid[I], AResult.Output.AddChildNV(cnstXMLCmdDrawing));
end;

function TsgXMLIDE.CommandToXMLNode(const ANode: TsgNode;
  const AResult: TsgNode; ACommand: TsgXMLKey): Integer;
var
  vResult, vTempResult: TsgNode;
  vPseudoResult: TsgNode;
  vTempNode: TsgNode;

  procedure AddParam(AInternalNode: TsgNode; AParam: TXMLCommParameter);
  begin
    FXMLCommParameterList.AddObject(cnsTXMLCommParameters[AParam].Name, Pointer(AParam));
    AInternalNode.AddAttribNV(cnsTXMLCommParameters[AParam].Name).ValueAsStr := cnstDataTypes[cnsTXMLCommParameters[AParam].ValueType].Name;
  end;

  procedure AddParams(AInternalNode: TsgNode; AParams: array of TXMLCommParameter);
  var
    I: Integer;
  begin
    for I := Low(AParams) to High(AParams) do
      AddParam(AInternalNode, AParams[I]);
  end;

  function AddChildParam(AInternalNode: TsgNode; AParam: TXMLCommParameter): TsgNode;
  begin
    FXMLCommParameterList.AddObject(cnsTXMLCommParameters[AParam].Name, Pointer(AParam));
    Result := AInternalNode.AddChildNV(cnsTXMLCommParameters[AParam].Name);
    Result.ValueAsStr := cnstDataTypes[cnsTXMLCommParameters[AParam].ValueType].Name;
  end;

  procedure AddChildParams(AInternalNode: TsgNode; AParams: array of TXMLCommParameter);
  var
    I: Integer;
  begin
    for I := Low(AParams) to High(AParams) do
      AddChildParam(AInternalNode, AParams[I]);
  end;


  function CreateOutput(AInternalResult: TsgNode): TsgNode;
  begin
    AInternalResult.Name := cnstXMLResult;
    AddParam(AInternalResult, cpInstruction);
    Result := AddChildParam(AInternalResult, cpOutput);
    AddChildParam(AInternalResult, cpErrors);
  end;

begin
  Result := 0;
  vPseudoResult := nil;
  if Assigned(AResult) then
    vResult := CreateOutput(AResult)
  else
  begin
    vPseudoResult := TsgNode.Create;
    vResult := CreateOutput(vPseudoResult);
  end;
  try
    case ACommand of
      xkUndefined: ;
      xkGet:
        begin
          AddParams(ANode, [cpHandle, cpPathname]);
          //result:
          AddChildParam(vResult, cpDrawingData);
        end;
      xkGetCADPoint:
        begin
          AddParams(ANode, [cpPoint]);
        end;
      xkAdd:
        begin
          AddParams(ANode, [cpDrawingData]);
          //result
          vTempResult := AddChildParam(vResult, cpCreated);
          AddParams(vTempResult, [cpHandle]);
          vTempResult := AddChildParam(vResult, cpUpdated);
          AddParams(vTempResult, [cpHandle]);
        end;
      xkSelect:
        begin
          AddParams(ANode, [cpHandle, cpMarker, cpPathname, cpSelectMode]);
        end;
      xkApply:
        begin
          AddParams(ANode, [cpParameters]);
        end;
      xkDelete: ;
      xkLoad:
        begin
          AddParams(ANode, [cpFileName, cpBase64]);
          //result
          AddParams(vResult, [cpGuid, cpFileName, cpIndex]);
        end;
      xkUnload:
        begin
          AddParams(ANode, [cpIndex, cpGuid]);
        end;
      xkSwitchDrawing:
        begin
          AddParams(ANode, [cpIndex, cpGuid]);
        end;
      xkGetDrawingsList:
        begin
          //result
          vTempResult := AddChildParam(vResult, cpDrawing);
          AddParams(vTempResult, [cpGuid, cpFileName, cpIndex, cpDrawingMode]);
        end;
      xkGetImage:
        begin
          AddParams(ANode, [cpTop, cpLeft, cpRight, cpBottom, cpWidth, cpHeight]);
          //result:
          AddChildParam(vResult,cpBase64);
        end;
      xkContextMenu:
      begin
        AddParams(ANode, [cpMode]);
        AddParams(AddChildParam(AddChildParam(ANode, cpItems), cpItem),[cpCaption]);
        //result:
        AddChildParam(vResult, cpParameters);
      end;
     /// xkItem: AddParams(ANode, [cpCaption]);
      xkRibbon:
        begin
          AddParams(ANode, [cpVisible]);
        end;
      xkCommand:
        begin
          AddParams(ANode, [cpText]);
          //result
          AddParams(vResult, [cpResult]);
        end;
      xkGetSelected:
        begin
          //result:
          AddParams(vResult, [cpSelectedCount]);
          vTempResult := AddChildParam(vResult, cpSelected);
          AddParams(vTempResult, [cpHandle]);
        end;
      xkFitToSize: ;
      xkSignToEvent:
      begin
        AddParams(ANode, [cpEvent, cpEnabled]);
      end;
      xkUnSelect:
        begin
          AddParams(ANode, [cpMarker, cpHandle, cpPathname]);
        end;
      xkGetViewRect:
        begin
          // result
          vTempResult := AddChildParam(vResult, cpVisibleArea);
          AddParams(vTempResult, [cpWidth, cpHeight]);
          vTempResult := AddChildParam(vResult, cpCADArea);
          AddParams(vTempResult, [cpRect]);
        end;
      xkSetViewRect:
        begin
          AddParams(ANode, [cpRect]);
        end;
      xkGetBox:
        begin
          AddParams(ANode, [cpHandle, cpPathname]);
          //result
          AddParams(vResult, [cpBox]);
        end;
      xkShowSelectedEntities:
        begin
          AddParams(ANode, [cpShowEntityMethod]);
        end;
      xkSave:
        begin
          vTempNode := AddChildParam(ANode, cpExportParams);
          AddChildParams(vTempNode, [cpWidth, cpHeight, cpProportional, cpBitPerPixel,
              cpMeasureInPixels, cpTransparent, cpDPUX, cpDPUY, cpCompression,
              cpPageHeight, cpAuthor, cpLayoutExportMode, cpLayoutNameExportMode,
              cpVersion, cpIsConvertImageToOLE]);
        end;
      xkCreateHatch:
        begin
          AddParams(ANode, [cpHatchName, cpAngle, cpPatternScale, cpColor]);
          //result
          vTempNode := AddChildParam(vResult, cpSelected);
          AddParams(vTempNode, [cpHandle]);
        end;
      xkGetDrawingChanged:
        begin
          //result
          AddParams(vResult, [cpChanged]);
        end;
      xkSetDrawingChanged:
        begin
          AddParams(ANode, [cpGuid, cpSetDrawingMode, cpChanged]);
        end;
      xkGetView:  ;
      xkSetView: {ANode.AddChildNV(TsgDXFVport.GetPropertyName).ValueAsStr := TsgDXFVport.GetPropertyName};
      xkCustomSelectMode:
      begin
        AddParams(ANode, [cpCustomDraw, cpReadOnly, cpAskOnDelete, cpColor,
          cpLineWeight, cpHandle]);
      end;
      xkEditor:
      begin
        AddParams(ANode, [cpReadOnly, cpShowEntityPrecision, cpShowEntityMethod]);
      end;
      xkRegistration:
        begin
          AddParams(ANode, [cpUser, cpEMail, cpKey]);
          // result
          AddParams(vResult, [cpRegistration]);
        end;
      xkSetSpecialCustomInsert:
        begin
          AddParams(ANode, [cpHandle, cpColor, cpLineWeight]);
        end;
      xkSupportedCommandsList: ;
      xkSupportedClassesList: ;
      xkInvalidate:
        begin
          AddParams(ANode, [cpBox]);
        end;
      xkHelp:
        begin
          AddParams(ANode, [cpText, cpFileName, cpPathToXMLExamples]);
          // result
        end;
      xkCaptureScreen:
        begin
          //result
          AddParams(vResult, [cpFormat, cpBase64]);
        end;
      xkGetExternalFiles:
        begin
          //result
          vTempNode := AddChildParam(vResult, cpExternalFile);
          AddParams(vTempNode, [cpFileName]);
        end;
      xkMenuButton:
        begin
           AddParams(ANode, [cpButtonCaption])
        end;
    end;
  finally
    if Assigned(vPseudoResult) then
      vPseudoResult.Free;
  end;
end;

procedure TsgXMLIDE.CommandGetImage(ANode: TsgNodeSample;
  AResult: IsgResultNode);
var
  vGraphic: TGraphic;
  vBitmap: Graphics.TBitmap;
  vStream: TMemoryStream;
  vStreamBase64:TStringStream;
  vNodeExportParams: TsgNode;
  vDrawRect: TRect;
  vExportParams: TsgCommonExportParams;
  vFileName: string;
  vBackgroundColor: Integer;
begin
  vFileName := '';
  vStream := nil;
  try
    vNodeExportParams := TsgNode(ANode.GetChildByName(cnstExportParams));
    if Assigned(vNodeExportParams) then
    begin
      vExportParams := TsgCommonExportParams.Create;
      try
        vExportParams.FromNode(vNodeExportParams, nil);
        if vExportParams.IsDestinationFile then
          vFileName := vExportParams.SaveFileName;
        case vExportParams.Cliping.ClipMode of
          6:
            begin
              vBitmap := TBitmap(MainApplication.GetActualGraphic(vExportParams));
              vStream := TMemoryStream.Create;
              if vExportParams.Format = efAuto then
                vExportParams.Format := efBitmap;
               MainApplication.SaveBitmapToStream(vBitmap, vExportParams, '', vStream);
            end;
        else
          vGraphic := MainApplication.GetActualGraphic(vExportParams);

          if Assigned(vGraphic) then
          begin
            vBackgroundColor := clEmpty;
            vDrawRect := Rect(0, 0, vExportParams.RasterExportParams.Width,
              vExportParams.RasterExportParams.Height);
            if vGraphic is TsgCADImage then
            begin
              vBackgroundColor := TsgCADImage(vGraphic).BackgroundColor;
              case vExportParams.Cliping.ClipMode of
                4:  vDrawRect := MakeRectFromFRect(vExportParams.Cliping.ClipRect);
              end;
            end;
            vBitmap := TBitmap.Create;
            try
              try
                vBitmap.PixelFormat := vExportParams.RasterExportParams.Depth;
                vBitmap.Width := vExportParams.RasterExportParams.Width;
                vBitmap.Height := vExportParams.RasterExportParams.Height;
                SetBitmapTransparent(vBitmap,
                  vExportParams.RasterExportParams.Transparent, vBackgroundColor);
                vBitmap.Canvas.StretchDraw(vDrawRect, vGraphic);
                vStream := TMemoryStream.Create;
                if vExportParams.Format = efAuto then
                  vExportParams.Format := efBitmap;
                MainApplication.SaveBitmapToStream(vBitmap, vExportParams, '', vStream);
              except
              end;
            finally
              vBitmap.Free;
            end;
          end;
        end;
      finally
        vExportParams.Free;
      end;
    end;
    if Assigned(vStream) and (vStream.Size > 0) then
    begin
      vStream.Position := 0;
      vStreamBase64 := TStringStream.Create('');
      try
        EncodeBase64(TStream(vStream), TStream(vStreamBase64));
        AResult.Output.AddAttribNV(cnstXMLCmdBase64).Value := vStreamBase64.DataString;
      finally
        FreeAndNil(vStreamBase64);
      end;
      if Length(vFileName) > 0 then
      begin
        vStream.Position := 0;
        try
          vStream.SaveToFile(vFileName);
        except
        end;
      end;
    end
    else
      DoMessageError(AResult.Errors, sXMLInterfaceComFrmError, ANode);
  finally
    FreeAndNil(vStream);
  end;
end;

procedure TsgXMLIDE.CommandContextMenu(ANode: TsgNodeSample;
  AResult: IsgResultNode);
var
  vList: TStringList;
  vClicks, vPopups: TList;
  vAttrib, vChildNode: TsgNodeSample;
  vMode: Integer;
  I: Integer;
  vClick, vPopup, vSelf: Pointer;
  vCaption: string;
  vItems: TsgNodeSample;
begin
  if not Assigned(MainApplication) then
  begin
    DoMessageError(AResult.Errors, sXMLInterfaceMainApplicationError, ANode);
    Exit;
  end;
  if ANode.HasAttribute(cnstXMLCmdMode) then
  begin
    vAttrib := ANode.GetAttributeByName(cnstXMLCmdMode);
    vMode := vAttrib.ValueAsInt
  end
  else
    vMode := 1;
  vItems := nil;
  if ANode.ChildNodesCount > 0 then
  begin
    vItems := ANode.GetChildByName(cnstXMLCmdItems);
    if not Assigned(vItems) then
      vItems := ANode;
  end;
  if Assigned(vItems) then
  begin
    vList := TStringList.Create;
    vClicks := TList.Create;
    vPopups := TList.Create;
    try
      for I := 0 to vItems.ChildNodesCount - 1 do
      begin
        vChildNode := vItems.ChildNodes[I];
        if CompareText(vChildNode.Name, cnstXMLCmdItem) = 0 then
        begin
          vAttrib := vChildNode.GetAttributeByName(cnstXMLCmdCaption);
          if Assigned(vAttrib) then
          begin
            vCaption := vAttrib.ValueAsStr;
            vClick := nil;
            vPopup := nil;
            vSelf := nil;

            vAttrib := vChildNode.GetAttributeByName(cnstXMLCmdSender);
            if Assigned(vAttrib) then
              vSelf := vAttrib.ValueAsPointer;

            vAttrib := vChildNode.GetAttributeByName(cnstXMLCmdOnClick);
            if Assigned(vAttrib) then
              vClick := vAttrib.ValueAsPointer;

            vAttrib := vChildNode.GetAttributeByName(cnstXMLCmdOnPopup);
            if Assigned(vAttrib) then
              vPopup := vAttrib.ValueAsPointer;

            vList.AddObject(vCaption, vSelf);
            vClicks.Add(vClick);
            vPopups.Add(vPopup);
          end;
        end;
      end;
      if Assigned(MainApplication) then
        MainApplication.CreateUserMenu(vList, vClicks, vPopups, vMode);
    finally
      vPopups.Free;
      vClicks.Free;
      vList.Free;
    end;
  end;
end;

procedure TsgXMLIDE.CommandMenuButton(ANode: TsgNodeSample; AResult: IsgResultNode);
begin
  CommandApplyXML(ANode, AResult, False);
end;

procedure TsgXMLIDE.CommandRegistration(ANode: TsgNodeSample;
  AResult: IsgResultNode);
var
  vUser, vEMail, vKey: string;
  vNode: TsgNode;
  vResult: Integer;
begin
  if not Assigned(MainApplication) then
  begin
    DoMessageError(AResult.Errors, sXMLInterfaceMainApplicationError, ANode);
    Exit;
  end;
  vUser := '';
  vEMail:= '';
  vKey:= '';
  if Assigned(ANode.GetAttributeByName(cnstXMLCmdUser)) then
    vUser := ANode.GetAttributeByName(cnstXMLCmdUser).ValueAsStr;
  if Assigned(ANode.GetAttributeByName(cnstXMLCmdEMail)) then
    vEMail := ANode.GetAttributeByName(cnstXMLCmdEMail).ValueAsStr;
  if Assigned(ANode.GetAttributeByName(cnstXMLCmdKey)) then
    vKey := ANode.GetAttributeByName(cnstXMLCmdKey).ValueAsStr;
{$IFDEF SGAPPPROTECT}
  vResult := AppProtect.StRg(PChar(vUser), PChar(vEMail), PChar(vKey));
{$ELSE}
  vResult := 0;
{$ENDIF}
  vNode := AResult.Output;
  vNode.AddAttribNV(cnstXMLCmdRegistration).ValueAsInt := vResult;
end;

procedure TsgXMLIDE.CommandRibbon(ANode: TsgNodeSample;
  AResult: IsgResultNode);
var
  vNode: TsgNodeSample;
begin
  if not Assigned(MainApplication) then
  begin
    DoMessageError(AResult.Errors, sXMLInterfaceMainApplicationError, ANode);
    Exit;
  end;
  if Assigned(MainApplication) then
  begin
    vNode := ANode.GetAttributeByName(cnstXMLCmdVisible);
    if Assigned(vNode) then
      MainApplication.SetRibbonVisible(vNode.ValueAsBool);
  end;
end;

procedure TsgXMLIDE.CommandCaptureScreen(ANode: TsgNodeSample;
  AResult: IsgResultNode);
var
  vBmp: TBitmap;
  vMemoryStream: TMemoryStream;
  vExportGraphic: TGraphic;
  vFormat: TsgExportFormat;

  function WindowSnap(AWindowHandle: HWND; ABmp: TBitmap): Boolean;
  var
    vRect: TRect;
    vUser32DLLHandle: THandle;
    vPrintWindowAPI: function(sourceHandle: HWND; destinationHandle: HDC;
      nFlags: UINT): BOOL; stdcall;
  begin
     Result := False;
     vUser32DLLHandle := GetModuleHandle(user32);
     if vUser32DLLHandle <> 0 then
     begin
       @vPrintWindowAPI := GetProcAddress(vUser32DLLHandle, 'PrintWindow');
       if @vPrintWindowAPI <> nil then
       begin
         GetWindowRect(AWindowHandle, vRect) ;
         ABmp.Width := vRect.Right - vRect.Left;
         ABmp.Height := vRect.Bottom - vRect.Top;
         ABmp.Canvas.Lock;
         try
           Result := vPrintWindowAPI(AWindowHandle, ABmp.Canvas.Handle, 0) ;
         finally
           ABmp.Canvas.Unlock;
         end;
       end;
     end;
  end;
begin
  vBmp := TBitmap.Create;
  try
    if WindowSnap(HWNDMainForm, vBmp) then
    begin
      vMemoryStream := TMemoryStream.Create;
{$IFDEF SG_USE_PNG}
      vExportGraphic :={$IFDEF SGDEL_2009}TPngImage{$ELSE}TPngObject{$ENDIF}.Create;
      vFormat := efPng;
{$ELSE}
      vExportGraphic := TJpegImage.Create;
      vFormat := efJpeg;
{$ENDIF}
      try
        vExportGraphic.Assign(vBmp);
        vBmp.SaveToStream(vMemoryStream);
        ConvertStreamToOutputBase64(vMemoryStream,
          AResult.Output, vFormat);
      finally
        vMemoryStream.Free;
        vExportGraphic.Free;
      end;
    end;
  finally
    vBmp.Free;
  end;
end;

procedure TsgXMLIDE.CommandCommand(ANode: TsgNodeSample;
  AResult: IsgResultNode);
var
  vResults: TStringList;
  vResCode: Integer;
  vResStr: string;
begin
  if not Assigned(CADEditor) then
    Exit;
  vResults := TStringList.Create;
  try
    vResults.Delimiter := cnstCommaPoint;
    vResCode := CADEditor.LispRun(ANode.GetAttributeByName(cnstXMLCmdText).Value, vResults);
    vResStr := vResults.DelimitedText;
    if vResults.Count = 1 then
      sgFunction.StringReplace(vResStr, string(vResults.QuoteChar), '');
    if vResCode > 0 then
      AResult.Errors.AddChildNV(cnstXMLError).AddAttribNV(cnstXMLCmdMessage,
        vResStr)
    else if vResults.Text <> '' then
      AResult.Output.AddAttribNV(cnstXMLCmdResult).ValueAsStr := vResStr;
  finally
    vResults.Free;
  end;
end;

procedure TsgXMLIDE.CommandGetSelected(ANode: TsgNodeSample;
  AResult: IsgResultNode);
var
  vSelectedEntities: TList;
  vNode: TsgNode;
  vAttrib: TsgNodeSample;
  I: Integer;
begin
  if not Assigned(CADEditor) then
   Exit;

  vSelectedEntities := TList.Create;
  try
    CADEditor.GetSelectedEntities(vSelectedEntities);
    AResult.Output.AddAttribNV(cnstXMLCmdSelectedCount).ValueAsInt :=
      vSelectedEntities.Count;
    for I := 0 to vSelectedEntities.Count - 1 do
    begin
       vNode := AResult.Output.AddChildNV(cnstXMLCmdSelected);
       vAttrib := vNode.AddAttribNV(cnstXMLCmdHandle, '');
       vAttrib.ValueAsHandle := TsgDXFEntity(vSelectedEntities[I]).Handle;
    end;
  finally
    vSelectedEntities.Free;
  end;
end;

procedure TsgXMLIDE.CommandSignToEvent(ANode: TsgNodeSample;
  AResult: IsgResultNode);
var
  vNodeEvent, vNodeEnabled: TsgNodeSample;
  vOutput: TsgNode;
  vSet: Boolean;
  vCmdStr: string;
  J, vEventType: TsgXMLEvent;
begin
  vNodeEvent := ANode.GetAttributeByName(cnstXMLCmdEvent);
  if Assigned(vNodeEvent) then
  begin
    vEventType := xeUndefined;
    vCmdStr := LowerCase(vNodeEvent.ValueAsStr);
    for J := Low(TsgXMLEvent) to High(TsgXMLEvent) do
    begin
      if CompareText(vCmdStr, cnstEvents[J].Name) = 0 then
      begin
        vEventType := J;
        Break;
      end;
    end;
    if vEventType <> xeUndefined then
    begin
      vSet := True;
      vNodeEnabled := ANode.GetAttributeByName(cnstXMLEnabled);
      if Assigned(vNodeEnabled) then
        vSet := vNodeEnabled.ValueAsBool;
      if vSet then
        Include(FXMLEvents, vEventType)
      else
        Exclude(FXMLEvents, vEventType);
    end;
  end
  else
  begin
    for J := Low(TsgXMLEvent) to High(TsgXMLEvent) do
    begin
      if J = xeUndefined then
        Continue;
      vOutput := AResult.Output.AddChildNV(cnstXMLCmdSignToEvent);
      vOutput.AddAttribNV(cnstXMLCmdEvent).ValueAsStr := cnstEvents[J].Name;
      vOutput.AddAttribNV(cnstXMLEnabled).ValueAsBool := J in FXMLEvents;
    end;
  end;
end;

procedure TsgXMLIDE.CommandSupportedClassesList(ANode: TsgNodeSample;
  AResult: IsgResultNode);
var
  vNode: TsgNode;
  I: Integer;
  vEntity: TsgListObject;
  vListObjectClass: TsgListObjectClass;
begin
  vNode := AResult.Output;
  vEntity := nil;
  for I := 0 to GlobalsgTypes.Count - 1 do
  begin
    vListObjectClass := TsgListObjectClass(GlobalsgTypes.Objects[I]);
    if (vListObjectClass = TsgDXFConverter) or (vListObjectClass = TsgDXFSectionEntities) then
      Continue
    else
      vEntity := TsgListObjectClass(GlobalsgTypes.Objects[I]).Create;
    if vEntity = nil then
      Continue;
    try
      vEntity.ToXML(vNode, [xmNoSubEntitiesNode]);
    finally
      FreeAndNil(vEntity);
    end;
  end;
  CommandHelp(FRootOut);
end;

function TsgXMLIDE.CommandHelp(ANode: TsgNodeSample): string;

  procedure ProcessAttribs(ANodeHelp: TsgNodeSample);
  var
    J: Integer;
    S: string;
  begin
    for J := 0 to ANodeHelp.AttributeNodesCount - 1 do
    begin
      S := ANodeHelp.AttributeNodes[J].Name;
      if S <> csntNestedStructure then
        ANodeHelp.AttributeNodes[J].Value := GetXMLHelp(GetXMLType(ANodeHelp.AttributeNodes[J].Name));
    end;

  end;

var
  I: Integer;
  S: string;
  vStrList: TStringList;
  vNode: TsgNodeSample;
  vNodeAttr: TsgNode;
begin
  if ANode.ChildNodesCount = 0 then
  begin
    vNode := ANode.GetAttributeByName(cnsTXMLCommParameters[cpPathToXMLExamples].Name);
    if vNode <> nil then
      FPathToXMLExamples := vNode.Value;
    vNode := ANode.GetAttributeByName(cnsTXMLCommParameters[cpFileName].Name);
    if (vNode <> nil) and (vNode.Value <> '') then
      SaveToHTMLHelp(vNode.Value);
    vNode := ANode.GetAttributeByName(cnsTXMLCommParameters[cpText].Name);
    if vNode <> nil then
      S := vNode.Value;
    if S <> '' then
    begin
      vStrList := TStringList.Create;
      try
        GetHints(S, vStrList);
        vNodeAttr := FRootOut.AddChildNV('Attributes');
        for I := 0 to vStrList.Count - 1 do
          vNodeAttr.AddAttribNV(vStrList.Names[I]).Value := vStrList.ValueFromIndex[I];
      finally
        vStrList.Free;
      end;
    end;
    Exit;
  end;
  if FRootOut <> ANode then
  begin
    ProcessAttribs(ANode);
    S := ANode.Name;
    if (Copy(S, 1, 3) = cnstXMLPrefix) then
      Delete(S, 1, 3);
    S := InsertSpace(S);
    if (S <> 'Comment') then
      TsgNode(ANode).AddAttribNV('Description', S);
  end;
  for I := 0 to ANode.ChildNodesCount - 1 do
    CommandHelp(ANode.ChildNodes[I]);
end;

procedure TsgXMLIDE.CommandSupportedCommandsList(ANode: TsgNodeSample;
  AResult: IsgResultNode);
var
  vNode, vChild: TsgNode;
  //vParam: string;
  I: TsgXMLKey;
begin
  vNode := AResult.Output;
  for I := Low(TsgXMLKey) to High(TsgXMLKey) do
  begin
    if I in [xkGetBox] then
      Continue;
    vChild := vNode.AddChildNV(cntKeyWords[I].Name);
//    vParam := cntKeyWords[I].InputParams;
//    if vParam = '' then
//      vParam := cnstXmlEmptyParams;
    CommandToXMLNode(vChild, nil, TsgXMLKey(I));
   // vChild.AddAttribNV(cnstXMLCMdDecription).ValueAsStr := cntKeyWords[I].Description;
  //  vChild.AddAttribNV(cnstXMLCMdInputParam).ValueAsStr := vParam;
  //  vChild.AddAttribNV(cnstXMLCMdReturningValues).ValueAsStr := cntKeyWords[I].ReturningValues;
  end;
  CommandHelp(FRootOut);
end;

procedure TsgXMLIDE.CheckResults;
var
  vResultsNode: TsgNode;
  I, vErrorsSum: Integer;

  procedure CheckNodeName(const ANode: TsgNode; const AName: string;
    const ASum: PInteger);
  var
    vNode: TsgNode;
  begin
    vNode := TsgNode(ANode.GetChildByName(AName));
    if Assigned(vNode) then
    begin
      if ASum <> nil then
        ASum^ := ASum^ + vNode.ChildNodesCount;
      if (vNode.ChildNodesCount = 0) and (vNode.AttributeNodesCount = 0) then
      begin
        if ANode.RemoveChild(vNode) then
          vNode.Free;
      end;
    end;
  end;

begin
  vResultsNode := TsgNode(FRootOut.GetChildByName(cnstXMLResults));
  if Assigned(vResultsNode) then
  begin
    vErrorsSum := 0;
    for I := 0 to vResultsNode.ChildNodesCount - 1 do
    begin
      CheckNodeName(TsgNode(vResultsNode.ChildNodes[I]), cnstXMLOutput, nil);
      CheckNodeName(TsgNode(vResultsNode.ChildNodes[I]), cnstXMLErrors, @vErrorsSum);
    end;
    if vErrorsSum > 0 then
      vResultsNode.AddAttribNV(cnstXMLErrors).ValueAsInt := vErrorsSum;
  end
  else
    DoXMLParserError(cnstXMLMessageNotHasNode + ': ' + cnstXMLResults, nil);
end;

function TsgXMLIDE.GetResult: TsgNode;
begin
  Result := FResultNode;
end;

function TsgXMLIDE.GetOnXMLMessage: TsgXMLMessage;
begin
  Result := FOnXMLMessage;
end;

function TsgXMLIDE.GetOutput: TsgNode;
begin
  Result := nil;
  if Assigned(FResultNode) then
  begin
    Result := TsgNode(FResultNode.GetChildByName(cnstXMLOutput));
    if not Assigned(Result) then
    begin
      Result := TsgNode(FResultNode.AddChildNV(cnstXMLOutput));
    end;
  end;
end;

function TsgXMLIDE.GetErrors: TsgNode;
begin
  Result := nil;
  if Assigned(FResultNode) then
  begin
    Result := TsgNode(FResultNode.GetChildByName(cnstXMLErrors));
    if not Assigned(Result) then
    begin
      Result := TsgNode(FResultNode.AddChildNV(cnstXMLErrors));
    end;
  end;
end;

function TsgXMLIDE.GetKey(const AStr: string):  TsgXMLKey;
var
  I: TsgXMLKey;
  vIndex: Integer;
begin
  Result := xkUndefined;
  if not Assigned(KeyWords) then
  begin
    KeyWords := TsgStringList.Create;
    KeyWords.Sorted := True;
    KeyWords.CaseSensitive := False;
    KeyWords.Duplicates := dupIgnore;
    for I := Low(TsgXMLKey) to High(TsgXMLKey) do
      KeyWords.AddObject(cntKeyWords[I].Name, TObject(I));
  end;
  vIndex := KeyWords.IndexOf(AStr);
  if vIndex > -1 then
    Result := TsgXMLKey(KeyWords.Objects[vIndex]);
end;

function TsgXMLIDE.GetEntitiesByNodeWithFilter(const ANode: TsgNodeSample;
  const AErrorsNode: TsgNode; AHandles: TsgInt64List; AEntityList: TList): Boolean;
var
  vHasFilter: Boolean;
  vAttribsNoFilter: TList;
  vEntity: TsgDXFEntity;
  vLayout: TsgDXFLayout;
begin
  Result := False;
  vAttribsNoFilter := TList.Create;
  try
    vEntity := GetEntityByNode(ANode, AErrorsNode, AHandles, AEntityList);
    if (AEntityList.Count = 0) and Assigned(vEntity) then
      AEntityList.Add(vEntity);
    vHasFilter := ExtractAttribsNoUseInFilter(TsgNode(ANode), vAttribsNoFilter);
    try
      if vHasFilter then
      begin
        if AEntityList.Count = 0 then
        begin
          vLayout := CADImage.CurrentLayout;
          AEntityList.Add(vLayout);
        end;
        ApplyFilter(TsgNode(ANode), AEntityList);
        Result := True;
      end;
    finally
      AddAttribsNoUseInFilter(TsgNode(ANode), vAttribsNoFilter);
    end;
  finally
    vAttribsNoFilter.Free;
  end;
end;

function TsgXMLIDE.GetEntityByNode(const ANode: TsgNodeSample;
  const AErrorsNode: TsgNode; AHandles: TsgInt64List = nil;
  AEntityList: TList = nil): TsgDXFEntity;
var
  I: Integer;
  vParent: TsgDXFEntity;
  vStrValues: TsgStringList;
  vNodeHandle, vNodePathName: TsgNodeSample;
  vHandle: Int64;

  function GetEntityOnName(const AParent: TsgDXFEntity;
    const AName: string): TsgDXFEntity;
  var
    vConvSec: TConvSection;
    vSection: TsgDXFEntity;
  begin
    Result := nil;
    if Assigned(AParent) then
      Result := AParent.FindEntByName(AName)
    else
    begin
      for vConvSec := Low(TConvSection) to High(TConvSection) do
      begin
        vSection := FCADImage.Converter.Sections[vConvSec];
        if Assigned(vSection) and SameText(AName, vSection.Name) then
        begin
          Result := vSection;
          Break;
        end;
      end;
    end;
  end;
begin
  Result := nil;
  if Assigned(AHandles) then
    AHandles.Count := 0;
  if Assigned(AEntityList) then
    AEntityList.Count := 0;
  vNodePathName := ANode.GetAttributeByName(cnstXMLCmdPathName);
  // Priority PathName Handle
  if Assigned(vNodePathName) then
  begin
    vParent := nil;
    vStrValues := TsgStringList.Create;
    try
      vStrValues.LineBreak := cnstDecimalSeparatorNames;
      vStrValues.Text := vNodePathName.ValueAsStr;
      DeleteEmptyStrings(vStrValues);
      for I := 0 to vStrValues.Count - 1 do
      begin
        vParent := GetEntityOnName(vParent, vStrValues[I]);
        if not Assigned(vParent) then
          Break;
      end;
    finally
      vStrValues.Free;
    end;
    if Assigned(vParent) then
    begin
      Result := vParent;
      if Assigned(AHandles) then
        AHandles.Add(Result.Handle);
      if Assigned(AEntityList) then
        AEntityList.Add(Result);
    end
    else
     DoMessageError(AErrorsNode,
       Format(sXMLInterfaceObjectNotFindHandle, [vNodePathName.ValueAsStr]),
       vNodePathName);
  end
  else
  begin
    vNodeHandle := ANode.GetAttributeByName(cnstXMLCmdHandle);
    if Assigned(vNodeHandle) then
    begin
      if Assigned(AHandles) then
      begin
        vStrValues := TsgStringList.Create;
        try
          vStrValues.LineBreak := cnstDecimalSeparatorNames;
          vStrValues.Text := vNodeHandle.ValueAsStr;
          DeleteEmptyStrings(vStrValues);
          for I := 0 to vStrValues.Count - 1 do
          begin
            vHandle := TsgDXFConverterAccess(FCADImage.Converter).RestoreHandle(vStrValues[I]);
            if vHandle <> 0 then
              AHandles.Add(vHandle)
            else
              DoMessageError(AErrorsNode,
                Format(sXMLInterfaceObjectNotFindHandle,[vStrValues[I]]),
                vNodeHandle);
          end;
        finally
          vStrValues.Free;
        end;
      end;
      if Assigned(AHandles) then
      begin
        if AHandles.Count > 0 then
        begin
          Result := FCADImage.Converter.FindObjByHandle(AHandles[0]);
          if Assigned(AEntityList) then
            FCADImage.Converter.FindObjByHandles(AHandles, AEntityList);
          if AEntityList.Count <> AHandles.Count then
            DoMessageError(AErrorsNode, sXMLInterfaceObjectsNotFind, vNodeHandle);
        end;
      end
      else
      begin
        Result := FCADImage.Converter.FindObjByHandle(
          TsgDXFConverterAccess(FCADImage.Converter).
          RestoreHandle(vNodeHandle.Value));
        if not Assigned(Result) then
         DoMessageError(AErrorsNode,
           Format(sXMLInterfaceObjectNotFindHandle, [vNodeHandle.Value]),
           vNodeHandle);
      end;
    end;
  end;
end;

function TsgXMLIDE.GetXMLOutString: string;
begin
  CheckResults;
  Result := FXMLOut.XMLString;
end;

procedure TsgXMLIDE.GetHints(ANodeName: string; var Hints: TStringList);
var
  vNode: TsgNode;
  vXMLKey: TsgXMLKey;
  vInd: TsgXMLKey;
  I: Integer;
  J: TsgXMLId;
  vListObjectClass: TsgListObjectClass;
  vEntity: TsgListObject;
  S: string;
begin
  if FInstructions = nil then
  begin
    FInstructions := TStringList.Create;
    for vXMLKey := Low(cntKeyWords) to High(cntKeyWords) do
      FInstructions.AddObject(cntKeyWords[vXMLKey].Name, TObject(vXMLKey));
    FInstructions.Sort;
  end;
  if FInstructions.IndexOf(ANodeName) <> -1 then
  begin
    vInd := TsgXMLKey(FInstructions.Objects[FInstructions.IndexOf(ANodeName)]);
    vNode := TsgNode.Create;
    try
      CommandToXMLNode(vNode, nil, vInd);
      if vNode.Attributes <> nil then
        for I := 0 to vNode.Attributes.Count - 1 do
        begin
          if LowerCase(vNode.AttributeNodes[I].Name) = 'parameters' then
          begin
            for J := Low(cnstXMLNames) to High(cnstXMLNames) do
            begin
              S := cnstDataTypes[cnstXMLNames[J].ValueType].Name;
              if cnstXMLNames[J].Name <> '' then
                Hints.Add(cnstXMLNames[J].Name + '=' + S);
            end;
            Continue;
          end;
          Hints.Add(vNode.AttributeNodes[I].Name + '=' + vNode.AttributeNodes
            [I].Value);
        end;
    finally
      vNode.Free;
    end;
  end
  else
  begin
    S := ANodeName;
    if (Copy(S, 1, 3) = cnstXMLPrefix) then
      Delete(S, 1, 3);
    I := GlobalsgTypes.IndexOf(S);
    if I <> -1 then
    begin
      vListObjectClass := TsgListObjectClass(GlobalsgTypes.Objects[I]);
      if (vListObjectClass = TsgDXFConverter) or
        (vListObjectClass = TsgDXFSectionEntities) then
        Exit;
      vEntity := vListObjectClass.Create;
      vNode := TsgNode.Create;
      try
        vEntity.ToXML(vNode, [xmCallHelp]);
        if vNode.ChildNodesCount > 0 then
        begin
          vNode := TsgNode(vNode.ChildNodes[0]);
          if vNode.Attributes <> nil then
          begin
            for I := 0 to vNode.Attributes.Count - 1 do
            begin
              S := cnstDataTypes[cnstXMLNames[GetXMLType(vNode.AttributeNodes[I].Name).Id].ValueType].Name;
              // if S = '' then
              // S := InsertSpace(S);
              Hints.Add(vNode.AttributeNodes[I].Name + '=' + S);
            end;
            Hints.Add(cnstXMLNames[xmlHandleSave].Name + '=' + cnstDataTypes[cnstXMLNames[xmlHandleSave].ValueType].Name);
          end;
        end;
      finally
        vEntity.Free;
        vNode.Free;
      end;
    end;
  end;
end;

function TsgXMLIDE.GetImageGuid: TGUID;
begin
  Result := cntsErrorGuid;
  if CADEDitor <> nil then
    Result := CADEDitor.GetCurrentDrawingGuid
  else
    Result := CADImage.Guid;
end;

function TsgXMLIDE.GetIResultNode: IsgResultNode;
begin
  Result := Self;
end;

function TsgXMLIDE.ProcessXML(AInput: string): string;
var
  vMainNode: TsgNodeSample;
  J: Integer;
  vHandle: THandle;
  vImg: TsgCADImage absolute vHandle;
  vKey: TsgXMLKey;
  vNode, vError: TsgNode;
{$IFDEF SGAPPPROTECT}
  vCmdsCount: Integer;
{$ENDIF}
  vMessageXMLError: string;
  vPosition: TPoint;
begin
  FResult := '';
  if AInput = '' then
  begin
    Result := SaveConverterToXML;
    Exit;
  end;
  if FRootOut.HasChildNodes then
    FRootOut.Childs.ClearNodes;
  //
  if not IsValidXML(AInput, vMessageXMLError, @vPosition) then
  begin
    DoXMLParserError(vMessageXMLError, @vPosition);
    Result := GetXMLOutString;
    Exit;
  end;
  //vOut := FRootOut.AddChildNV(cnstXMLOut);
  try
  FXMLInp.DebugInfo := True;
  FXMLInp.LoadFromString(AInput);
{$IFDEF SGDEL_2009}
  GetEncodingCodePageName(FXMLInp.SaveEncoding);
{$ENDIF}
  vMainNode := FXMLInp.ROOT.NodeByName[cnstXMLRootNode];
  if not CheckXMLInterfaceVersion(vMainNode) then
  begin
    CreateResultNode(vMainNode.Name);
    DoMessageError(GetIResultNode.Errors, sXMLInterfaceVersionError, vMainNode);
    Result := GetXMLOutString;
    Exit;
  end;
{$IFDEF SGAPPPROTECT}
  vCmdsCount := 0;
{$ENDIF}
  for J := 0 to vMainNode.ChildNodesCount - 1 do
  begin
    vNode := TsgNode(vMainNode.ChildNodes[J]);
    // skip
    if vNode.NodeType <> ntElement then
      Continue;
    vKey := GetKey(vNode.Name);
    CreateResultNode(vNode.Name);
    if Assigned(MainApplication) then
    begin
      if vKey = xkCommand then
        MainApplication.MainUpdate(mumFullUpdate)
      else
        MainApplication.MainUpdate(mumXmlInterfaceUpdate);
    end;

    if (not (vKey in cnstKeyNotUsedCADEditor)) and (not Assigned(CADEditor) or
      CADEditor.IsOnlyCommand) then
    begin
      if Assigned(MainApplication) and IsEqualGUID(MainApplication.CreateDrawing, cnstFailNewDrawing) then
      begin
        vError :=  GetIResultNode.Errors.AddChildNV(cnstXMLError);
        vError.AddAttribNV(cnstXMLMessage,
          Format(cnstXMLMessageUnsupportedCommand,[vNode.Name]));
        Continue;
      end;
    end;
    if vKey = xkRegistration then
      CommandRegistration(vNode, GetIResultNode)
    else
{$IFDEF SGAPPPROTECT}
      if AppProtect.CheckTrial then
{$ENDIF}
      begin
        case vKey of
          xkGet: CommandGet(vNode, GetIResultNode);
          xkGetCADPoint: CommandGetCADPoint(vNode, GetIResultNode);
          xkAdd: CommandAdd(vNode, GetIResultNode);
          xkGetExternalFiles: CommandGetExternalFiles(vNode, GetIResultNode);
          xkGetBox: CommandGetBox(vNode, GetIResultNode);
          xkFitToSize: CommandFitToSize(vNode, GetIResultNode);
          xkSelect: CommandSelect(vNode, GetIResultNode);
          xkUnSelect: CommandUnSelect(vNode, GetIResultNode);
          xkApply: CommandApply(vNode, GetIResultNode);
          xkDelete: CommandDelete(vNode, GetIResultNode);
          xkLoad: CommandLoad(vNode, GetIResultNode);
          xkUnload: CommandUnLoad(vNode, GetIResultNode);
          xkSwitchDrawing: CommandSwitchDrawing(vNode, GetIResultNode);
          xkGetDrawingsList: CommandGetDrawingsList(vNode, GetIResultNode);
          xkGetImage: CommandGetImage(vNode, GetIResultNode);
          xkContextMenu: CommandContextMenu(vNode, GetIResultNode);
          xkRibbon: CommandRibbon(vNode, GetIResultNode);
          xkCommand: CommandCommand(vNode, GetIResultNode);
          xkGetSelected: CommandGetSelected(vNode, GetIResultNode);
          xkSignToEvent: CommandSignToEvent(vNode, GetIResultNode);
          xkShowSelectedEntities:  CommandShowSelectEntities(vNode, GetIResultNode);
          xkSave: CommandSaveToFile(vNode, GetIResultNode);
          xkCreateHatch: CommandCreateHatch(vNode, GetIResultNode);
          xkGetDrawingChanged: CommandGetDrawingChanged(vNode, GetIResultNode);
          xkSetDrawingChanged: CommandSetDrawingChanged(vNode, GetIResultNode);
          xkGetView: CommandGetView(vNode, GetIResultNode);
          xkSetView: CommandSetView(vNode, GetIResultNode);
          xkCustomSelectMode: CommandCustomSelectMode(vNode, GetIResultNode);
          xkEditor: CommandEditorAttribs(vNode, GetIResultNode);
          xkSetSpecialCustomInsert: CommandSetSpecialCustomInsert(vNode, GetIResultNode);
          xkSupportedCommandsList: CommandSupportedCommandsList(vNode, GetIResultNode);
          xkSupportedClassesList: CommandSupportedClassesList(vNode, GetIResultNode);
          xkInvalidate: CommandInvalidate(vNode, GetIResultNode);
          xkHelp: CommandHelp(vNode);
          xkGetViewRect: CommandGetViewRect(vNode, GetIResultNode);
          xkSetViewRect: CommandSetViewRect(vNode, GetIResultNode);
          xkMenuButton: CommandMenuButton(vNode, GetIResultNode);
          xkCaptureScreen: CommandCaptureScreen(vNode, GetIResultNode);
          else
          begin
            if not SameText(vNode.Name, cnstXMLCmdComment) then
              DoMessageError(GetIResultNode.Errors,
               Format(cnstXMLMessageUnsupportedCommand,[vNode.Name]), vNode);
          end;
        end;
    end
{$IFDEF SGAPPPROTECT}
    else
      Inc(vCmdsCount, Ord(vKey <> xkUndefined))
{$ENDIF};
  end;
{$IFDEF SGAPPPROTECT}
  if vCmdsCount > 0 then
    DoTrialMessage;
{$ENDIF};
  finally
    Result := GetXMLOutString;
  end;
end;

function TsgXMLIDE.SaveConverterToXML: string;
begin
  Result := SaveEntityToXML(FCADImage.Converter);
end;

function TsgXMLIDE.SaveEntityToXML(AEntity: TsgListObject): string;
var
  vXMLParser: TsgParser;
  vRoot: TsgNode;
  vDocument: TsgNodeDocument;
{$IFDEF SGDEL_2009}
  vCodePageName: string;
{$ENDIF}
begin
  if FCADImage <> nil then
  begin
    vXMLParser := TsgParser.Create;
    try
      vDocument := TsgNodeDocument.Create;
      vDocument.Name := cnstXML;
      vXMLParser.ROOT.Add(vDocument);
      vDocument.AddAttribNV(cnstVersion).ValueAsStr := '1.0';
{$IFDEF SGDEL_2009}
      vCodePageName := GetEncodingCodePageName(vXMLParser.SaveEncoding);
      if Length(vCodePageName) > 0 then
        vDocument.AddAttribNV(cnstEncoding).ValueAsStr := vCodePageName;
{$ENDIF}
      vDocument.AddAttribNV(cnstStandalone).ValueAsStr := 'no';
      vRoot := TsgNode.Create;
      vRoot.Name := cnstXMLRootNode;
      vXMLParser.ROOT.Add(vRoot);
      vRoot.AddAttribNV(cnstVersion).ValueData.ValueAsVersion := cnstXMLIntfaceVersion;
      AEntity.ToXML(vRoot);
      Result := vXMLParser.XMLString;
    finally
      vXMLParser.Free;
    end;
  end;
end;

procedure TsgXMLIDE.SaveToHTMLHelp(AFileName: string);
const
  cnstXMLHelpAddAttribString = ' parameters are: <br/>';
  cnstXMLHelpAddChildString = ' field accepts the following child: <br/>';
var
  vStrList, vExample, vFiles, vEvents, vSortedInstructions, vSortedInstructionParameters: TStringList;
  I: TsgXMLKey;
  vInd: TsgDataType;
  vComParamType: TXMLCommParameter;
  vEvent: TsgXMLEvent;
  J, K, vIndSyntax, ComParamInd, vDescriptionInd, vExampleNumber: Integer;
  vNode, vChild, vResult : TsgNode;
  vEntity: TsgListObject;
  vListObjectClass: TsgListObjectClass;
  vXMLInp: TsgParser;
  S, vSyntax, vCmdPref, vPathToExamples, vClassName: string;
  //vHasResult: Boolean;

  procedure AddHeader;
  begin
    vStrList.Add('<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01//EN" "http://www.w3.org/TR/html4/strict.dtd">');
    vStrList.Add('<html> <head> <title> CADSoftTools XML Reference </title>');
    vStrList.Add(' <style type="text/css"> TABLE { width: 700px; border-collapse: collapse; } ');
    vStrList.Add(' TD, TH {   padding: 3px;  border: 1px solid black; /* Ïàðàìåòðû ðàìêè */   }   TH {    background: #b0e0e6; /* Öâåò ôîíà */   }  </style>');
    vStrList.Add('<script type="text/javascript" src="shFilter.js"></script>');
    vStrList.Add('<script type="text/javascript" src="shCore.js"></script>');
    vStrList.Add('<script type="text/javascript" src="shBrushXml.js"></script>');
    vStrList.Add('<link type="text/css" rel="stylesheet" href="shCoreDefault.css"/>');
    vStrList.Add('<link type="text/css" rel="stylesheet" href="shTable.css">');
    vStrList.Add('<script type="text/javascript">SyntaxHighlighter.all();</script>');
    vStrList.Add('</head> <body>');
    vStrList.Add('<H1>CADSoftTools XML Reference  </H1> <br/>');
  end;

  procedure AddContents;
  var
    vIndx: Integer;
    S: string;
  begin
    vStrList.Add('Filter: ');
    vStrList.Add('<input name="filt" onkeyup="filter(this, ''tab1'')" style="width:150px;" type="text" placeholder="Type to search"  />');
    vStrList.Add('    <p/>');


    vStrList.Add('<table  id="tab1">');
      vStrList.Add('<tr>');

        vStrList.Add('<th>');
        vStrList.Add('<b><a href="#Instructions"> Instructions </a></b>');
      vStrList.Add('<input name="filtins" onkeyup="FilterColumns(this, ''tab1'', 0)" style="width:150px;" type="text" placeholder="Type to search"  />');
        vStrList.Add('</th>');

        vStrList.Add('<th>');
        vStrList.Add('<b><a href="#InstructionParameters"><NOBR> Instruction Parameters </NOBR> </a> </b>');
      vStrList.Add('<input name="filtinsparam" onkeyup="FilterColumns(this, ''tab1'', 1)" style="width:150px;" type="text" placeholder="Type to search"  />');
        vStrList.Add('</th>');


        vStrList.Add('<th>');
        vStrList.Add('<b><a href="#Classes">Classes</a></b>');
      vStrList.Add('<input name="filtclasses" onkeyup="FilterColumns(this, ''tab1'', 2)" style="width:150px;" type="text" placeholder="Type to search"  />');
        vStrList.Add('</th>');

        vStrList.Add('<th>');
        vStrList.Add('<b><a href="#ClassesParameters"> <NOBR> Classes Parameters</NOBR></a></b>');
      vStrList.Add('<input name="filtclassesparam" onkeyup="FilterColumns(this, ''tab1'', 3)" style="width:150px;" type="text" placeholder="Type to search"  />');
        vStrList.Add('</th>');

        vStrList.Add('<th>');
        vStrList.Add('<b><a href="#Types">Types </a> </b>');
      vStrList.Add('<input name="filtinsparam" onkeyup="Filtertypes(this, ''tab1'', 4)" style="width:150px;" type="text" placeholder="Type to search"  />');
        vStrList.Add('</th>');

        vStrList.Add('<th>');
        vStrList.Add('<b><a href="#Events">Events</a></b>');
      vStrList.Add('<input name="filtevents" onkeyup="FilterColumns(this, ''tab1'', 5)" style="width:150px;" type="text" placeholder="Type to search"  />');
        vStrList.Add('</th>');

        vStrList.Add('<th>');
        vStrList.Add('<b><a href="#Commands"><NOBR> Command line examples</NOBR> </a></b>');
      vStrList.Add('<input name="filtcommands" onkeyup="FilterColumns(this, ''tab1'', 6)" style="width:150px;" type="text" placeholder="Type to search"  />');
        vStrList.Add('</th>');

      vStrList.Add('</tr>');


    for vIndx := 0 to XMLIds.Count - 1 do
    begin
      vStrList.Add('<tr>');

        vStrList.Add('<td>');
        if vIndx < vSortedInstructions.Count then
        begin
          S := cntKeyWords[TsgXMLKey(vSortedInstructions.Objects[vIndx])].Name;
          vStrList.Add('<a href="#' + S + '">' + S + '</a>');
        end;
        vStrList.Add('</td>');

        vStrList.Add('<td>');
        if vIndx  < vSortedInstructionParameters.Count then
        begin
          S := cnsTXMLCommParameters[TXMLCommParameter(vSortedInstructionParameters.Objects[vIndx])].Name;
          vStrList.Add('<a href="#' + vCmdPref + S + '">' + S + '</a>');
        end;
        vStrList.Add('</td>');

        vStrList.Add('<td>');
        if vIndx < GlobalsgTypes.Count then
        begin
          S := cnstXMLPrefix + TsgListObjectClass(GlobalsgTypes.Objects[vIndx]).GetPropertyName;
          vStrList.Add('<a href="#' + S + '">' + S + '</a>');
        end;
        vStrList.Add('</td>');

        vStrList.Add('<td>');
        if vIndx <= XMLIds.Count then
        begin
          S := cnstXMLNames[TsgXMLID(XMLIds.Objects[vIndx])].Name;
          vStrList.Add('<a href="#' + S + '">' + S + '</a>');
        end;
        vStrList.Add('</td>');

        vStrList.Add('<td>');
        if vIndx <= Ord(High(cnstDataTypes)) then
        begin
          S := cnstDataTypes[TsgDataType(vIndx)].Name;
          vStrList.Add('<a href="#' + S + '">' + S + '</a>');
        end;
        vStrList.Add('</td>');

        vStrList.Add('<td>');
        if vIndx <= Ord(High(TsgXMLEvent)) then
        begin
          S := cnstEvents[TsgXMLEvent(vIndx)].Name;
          vStrList.Add('<a href="#' + S + '">' + S + '</a>');
        end;
        vStrList.Add('</td>');

        vStrList.Add('<td>');
        if vIndx < vFiles.Count then
        begin
          vExample.LoadFromFile(FPathToXMLExamples + 'Commands\' + vFiles[vIndx]);
          S := vFiles[vIndx];
          StringReplace(S,ExtractFileExt(vFiles[vIndx]),'');
          vStrList.Add('<a href="#' + S + '">' + S + '</a>');
        end;
        vStrList.Add('</td>');
      vStrList.Add('</tr>');
    end;
    vStrList.Add('</table >');

  end;

  procedure AddParameter(AXMLID: TsgXMLId; AddAncor: Boolean = False; AIsSyntaxOnly: Boolean = False);
  var
    S: string;
  begin
    if AXMLID = xmlUndefined then
      Exit;
    if not AIsSyntaxOnly then
    begin
      vStrList.Add('<tr>');
        vStrList.Add('<td>');
        if AddAncor then
        begin
          vStrList.Add('<a name="' + cnstXMLNames[AXMLID].Name + '"></a>');
          vStrList.Add(cnstXMLNames[AXMLID].Name);
        end
        else
        begin
          S := cnstXMLNames[AXMLID].Name;
          vStrList.Add('<a href="#' + S + '">' + S + '</a>');
        end;
        vStrList.Add('</td>');
        vStrList.Add('<td>');
        S := cnstDataTypes[cnstXMLNames[AXMLID].ValueType].Name;
        vStrList.Add('<a href="#' + S + '">' + S + '</a>');
        vStrList.Add('</td>');
        vStrList.Add('<td>');
        if cnstXMLNames[AXMLID].Description <> '' then
          vStrList.Add(cnstXMLNames[AXMLID].Description)
        else
          vStrList.Add(InsertSpace(cnstXMLNames[AXMLID].Name));
        vStrList.Add('</td>');
      vStrList.Add('</tr>');
      S := cnstDataTypes[cnstXMLNames[AXMLID].ValueType].Name;
    end;
    vSyntax := vSyntax  +  '<a href="#' + cnstXMLNames[AXMLID].Name + '">' + cnstXMLNames[AXMLID].Name + '</a> ' +
      '=' + '<a href="#' + S + '">' + '"' + S + '"' + '</a> ';
  end;

  procedure AddParameterInstruction(AXMLID: TXMLCommParameter; AddAncor: Boolean = False; AIsSyntaxOnly: Boolean = False);
  var
    S: string;
  begin
  if not AIsSyntaxOnly then
  begin
    vStrList.Add('<tr>');
      vStrList.Add('<td>');
      S := cnsTXMLCommParameters[AXMLID].Name;
      if AddAncor then
        vStrList.Add('<a name="' + vCmdPref + cnsTXMLCommParameters[AXMLID].Name
        + IntToStr(Integer(AXMLID)) + '"></a>' + S)
      else
        vStrList.Add('<a href="#' + vCmdPref + S + IntToStr(Integer(AXMLID)) + '">' + S + '</a>');
      vStrList.Add('</td>');
      vStrList.Add('<td>');
      S := cnstDataTypes[cnsTXMLCommParameters[AXMLID].ValueType].Name;
      vStrList.Add('<a href="#' + S + '">' + S + '</a>');
      vStrList.Add('</td>');
      vStrList.Add('<td>');
      vStrList.Add(cnsTXMLCommParameters[AXMLID].Description);
      vStrList.Add('</td>');
    vStrList.Add('</tr>');
  end;
    vSyntax := vSyntax  + ' <a href="#' + vCmdPref + cnsTXMLCommParameters[AXMLID].Name + '">' + cnsTXMLCommParameters[AXMLID].Name + '</a> ' +
      '="' + '<a href="#' + S + '">' + S + '</a>" ';
  end;

  procedure AddParameterByText(AName, ADescr: string);
  begin
    vStrList.Add('<tr>');
      vStrList.Add('<td>');
      vStrList.Add('<a href="#' + AName + '">' + AName + '</a>');
      vStrList.Add('</td>');
      vStrList.Add('<td>');
      vStrList.Add('');
      vStrList.Add('</td>');
      vStrList.Add('<td>');
      vStrList.Add(ADescr);
      vStrList.Add('</td>');
    vStrList.Add('</tr>');
  end;


  procedure AddEvent(AXMLID: TsgXMLEvent; AddAncor: Boolean = False);
  var
    S: string;
  begin
    vStrList.Add('<tr>');
      vStrList.Add('<td>');
      S := cnstEvents[AXMLID].Name;
      if AddAncor then
        vStrList.Add('<a name="' + cnstEvents[AXMLID].Name + '"></a>' + S)
      else
        vStrList.Add('<a href="#' + S + '">' + S + '</a>');
      vStrList.Add('</td>');
      vStrList.Add('<td>');
      S := cnstDataTypes[cnstEvents[AXMLID].ValueType].Name;
      vStrList.Add('<a href="#' + S + '">' + S + '</a>');
      vStrList.Add('</td>');
      vStrList.Add('<td>');
      vStrList.Add(cnstEvents[AXMLID].Description);
      vStrList.Add('</td>');
    vStrList.Add('</tr>');
    vSyntax := vSyntax  + '<a href="#' + cnstEvents[AXMLID].Name + '">' + cnstEvents[AXMLID].Name + '</a> ' +
      '="' + '<a href="#' + S + '">' + S + '</a>" ';
  end;


  procedure AddParametersTableBegin(AStrList: TStringList);
  begin
    AStrList.Add('<table >');
      AStrList.Add('<tr>');
        AStrList.Add('<th>');
        AStrList.Add('<b>Parameter</b>');
        AStrList.Add('</th>');
        AStrList.Add('<th>');
        AStrList.Add('<b>Type</b>');
        AStrList.Add('</th>');
        AStrList.Add('<th>');
        AStrList.Add('<b>Description</b>');
        AStrList.Add('</th>');
      AStrList.Add('</tr>');
  end;

  procedure AddParametersTableEnd(AStrList: TStringList);
  begin
    AStrList.Add('</table>');
  end;

  procedure AddType(AType: TsgDataType);
  begin
      vStrList.Add('<tr>');
        vStrList.Add('<td>');
       vStrList.Add('<a name="' + cnstDataTypes[AType].Name + '"></a>');
        vStrList.Add(cnstDataTypes[AType].Name);
        vStrList.Add('</td>');
        vStrList.Add('<td>');
        vStrList.Add(cnstDataTypes[AType].Description);
        vStrList.Add('</td>');
      vStrList.Add('</tr>');
  end;

  procedure AddTypesTable;
  begin
    vStrList.Add('<table >');
      vStrList.Add('<tr>');
        vStrList.Add('<th>');
        vStrList.Add('<b>Type</b>');
        vStrList.Add('</th>');
        vStrList.Add('<th>');
        vStrList.Add('<b>Description</b>');
        vStrList.Add('</th>');
      vStrList.Add('</tr>');
  end;

  procedure AddParameterInternal(const ANodeInt: TsgNodeSample; AIsSyntaxOnly: Boolean);
  begin
    ComParamInd := FXMLCommParameterList.IndexOf(ANodeInt.Name);
    if ComParamInd <> -1 then
      AddParameterInstruction(TXMLCommParameter(FXMLCommParameterList.Objects[ComParamInd]), False, AIsSyntaxOnly)
    else
      AddParameter(GetXMLId(ANodeInt.Name), False, AIsSyntaxOnly);
  end;

  procedure GenerateInstructionParameters(ANode: TsgNode; AIsSyntaxOnly: Boolean = False);
  var
    M: Integer;
  begin
    for M := 0 to ANode.AttributeNodesCount - 1 do
      AddParameterInternal(ANode.AttributeNodes[M], AIsSyntaxOnly);
    vSyntax := vSyntax + '/&gt; <br/>';
  end;

  procedure GenerateInstructionParametersByChild(ANode: TsgNode);
  var
    M: Integer;
  begin
    for M := 0 to ANode.ChildNodesCount - 1 do
      AddParameterInternal(ANode.ChildNodes[M], False);
  end;

  function FindDescription(AXML: string): string;
  var
    vFrom, vTo: PChar;
  begin
    Result := '';
    vFrom := AnsiStrPos(PChar(AXML), PChar('<!-- Description:'));
    vTo := AnsiStrPos(PChar(AXML), PChar('-->'));
    if (vFrom = nil) or (vTo = nil) then
      Exit;
    SetLength(Result,vTo - vFrom - 5);
    StrLCopy(@Result[1], vFrom + 5, Length(Result));
    ReplaceAnsi(Result, '<', '&lt;');
    ReplaceAnsi(Result, '>', '&gt;');
  end;

  function  GetFileList(const Path: string; List: TStrings): string;
  var
    Rec: TSearchRec;
  begin
    if FindFirst(Path + '*.xml', faAnyFile, Rec) = 0 then
    repeat
      if (Rec.Name = '.') or (Rec.Name = '..') then Continue;
      if (Rec.Attr and faDirectory) <> 0 then
      begin
        List.Add(Rec.Name);
        GetFileList(Path + Rec.Name + '\', List);
      end
      else
        List.Add(Rec.Name);
    until FindNext(Rec) <> 0;
    FindClose(Rec);
    if List.Count > 0 then
      Result := Path
    else
      Result := ''
  end;

  function GetBoltTextForHtml(AText: string): string;
  begin
    Result := '<b>' + AText + '</b>';
  end;

  procedure AddNodeToHtml(ANode: TsgNode; AStrList: TStringList;
    AXMLKey: TsgXMLKey; ASyntax: Boolean = False);
  var
    vNode: TsgNode;
    J: Integer;
  begin
    if ANode.AttributeNodesCount > 0 then
    begin
      if ASyntax then
      begin
        AStrList.Add(Format('<H4> %s </H4>', ['Syntax:']));
        vIndSyntax := AStrList.Count;
        vSyntax := '&lt;' + GetBoltTextForHtml(cntKeyWords[AXMLKey].Name) + ' ';
      end;
      AStrList.Add(GetBoltTextForHtml(ANode.Name) + cnstXMLHelpAddAttribString);
      AddParametersTableBegin(AStrList);
      GenerateInstructionParameters(ANode);
      AddParametersTableEnd(AStrList);
      AStrList.Add('<br/>');
      if ASyntax then
        AStrList.Insert(vIndSyntax, vSyntax);
    end;
    if ANode.ChildNodesCount > 0 then
    begin
      AStrList.Add(GetBoltTextForHtml(ANode.Name) + cnstXMLHelpAddChildString);
      AddParametersTableBegin(AStrList);
      GenerateInstructionParametersByChild(ANode);
      AddParametersTableEnd(AStrList);
      AStrList.Add('<br/>');
    end;
    for J := 0 to ANode.ChildNodesCount - 1 do
    begin
      vNode := TsgNode(ANode.ChildNodes[J]);
      AddNodeToHtml(vNode, AStrList, AXMLKey, False);
    end;
  end;

  procedure AddInputParameters(ANode: TsgNode; AXMLKey: TsgXMLKey;
    AStrList: TStringList);
  begin
    AStrList.Add('<br/>');
    AddNodeToHtml(ANode, AStrList, AXMLKey, True);
  end;

  procedure AddOutputParameters(ANode: TsgNode; AStrList: TStringList);
  begin
    //AStrList.Add(Format('<H4> %s </H4>', ['The returned value has the following structure:']));
    AStrList.Add('<br/>');
    AStrList.Add('The returned value has the following structure:');
    AStrList.Add('<br/>');
    AddNodeToHtml(ANode, AStrList, xkUndefined, False);
  end;

begin
  vCmdPref := 'cmd';
  vDescriptionInd := -1;
  vIndSyntax := -1;
  vChild := nil;
  vPathToExamples  := FPathToXMLExamples;
  vExample := TStringList.Create;
  vFiles := TStringList.Create;
  GetFileList(FPathToXMLExamples + 'Commands\', vFiles);
  vEvents := TStringList.Create;
  GetFileList(FPathToXMLExamples + 'Events\', vEvents);
  if XMLIds = nil then
    CreateXMLIdTable;
  vStrList := TStringList.Create;
  vSortedInstructions := TStringList.Create;
  for I := Low(cntKeyWords) to High(cntKeyWords) do
    vSortedInstructions.AddObject(cntKeyWords[I].Name, Pointer(I));
  vSortedInstructions.Sort;


  vSortedInstructionParameters := TStringList.Create;
  for vComParamType := Low(TXMLCommParameter) to high(TXMLCommParameter)  do
    vSortedInstructionParameters.AddObject(cnsTXMLCommParameters[vComParamType].Name, Pointer(vComParamType));
  vSortedInstructionParameters.Sort;

  try
    AddHeader;
    AddContents;

    vStrList.Add('<a name="Instructions"></a>');
    vStrList.Add('<H2> Instructions </H2>');
//    for I := Low(cntKeyWords) to High(cntKeyWords) do
    for K := 0 to vSortedInstructions.Count - 1 do
    begin
      I := TsgXMLKey(vSortedInstructions.Objects[K]);
      vStrList.Add('<a name="' + cntKeyWords[I].Name + '"></a>');
      vStrList.Add(Format('<H3> %s </H3>', [cntKeyWords[I].Name]));
      if cntKeyWords[I].Description <> '' then
      begin
        vStrList.Add(cntKeyWords[I].Description);
        vDescriptionInd := vStrList.Count - 1;
      end;
      vNode := TsgNode.Create;
      vNode.Name := cntKeyWords[I].Name;
      vResult := TsgNode.Create;

      FXMLCommParameterList.Sorted := False;
      FXMLCommParameterList.Clear;
      CommandToXMLNode(vNode, vResult, I);
      FXMLCommParameterList.Sorted := True;

      AddInputParameters(vNode, I, vStrList);
      AddOutputParameters(vResult, vStrList);
      vStrList.Add('<br/>');
      S := vPathToExamples + 'Instructions\' + cntKeyWords[I].Name +'.xml';
      vExampleNumber := 1;
      while FileExists(S) do
      begin
        vExample.LoadFromFile(S);
        S := vExample.Text;
        ReplaceAnsi(S, '<', '&lt;');
        //StringReplace(S, '<', '&lt;'):
        if vExampleNumber = 1 then
          vStrList.Add('Example: <br/>')
        else
        begin
          vStrList.Add('Example ' + IntToStr(vExampleNumber) + ': <br/>');
          vStrList.Add(FindDescription(vExample.Text))
        end;
        vStrList.Add('<pre class="brush: xml;"> ');
        vStrList.Append(S);
        vStrList.Add('</pre>');
        S := FindDescription(vExample.Text);
        if (S <> '') and (vExampleNumber = 1) and (vDescriptionInd <> -1) then
          vStrList[vDescriptionInd] := S;
        Inc(vExampleNumber);
        S := vPathToExamples + 'Instructions\' + cntKeyWords[I].Name + IntToStr(vExampleNumber) + '.xml';
      end;
      vStrList.Add('<hr/>');
      FreeAndNil(vNode);
      FreeAndNil(vResult);
      vDescriptionInd := -1;
    end;

    vStrList.Add('<a name="InstructionParameters"></a>');
    vStrList.Add('<H2> Instruction Parameters </H2>');
    AddParametersTableBegin(vStrList);
    for K := 0 to vSortedInstructionParameters.Count - 1 do
      AddParameterInstruction(TXMLCommParameter(vSortedInstructionParameters.Objects[K]), True);
    AddParametersTableEnd(vStrList);

    vStrList.Add('<a name="Classes"></a>');
    vStrList.Add('<H2> Classes </H2>');
    for K := 0 to GlobalsgTypes.Count - 1 do
    begin
      vListObjectClass := TsgListObjectClass(GlobalsgTypes.Objects[K]);
      if (vListObjectClass = TsgDXFConverter) or (vListObjectClass = TsgDXFSectionEntities) then
        Continue
      else
        vEntity := TsgListObjectClass(GlobalsgTypes.Objects[K]).Create;
      if vEntity = nil then
        Continue;
      vNode := TsgNode.Create;
      vXMLInp := TsgParser.Create;
      try
        vEntity.ToXML(vNode,[xmAddSubEntities, xmCallHelp]);
        if vNode.ChildNodesCount > 0 then
        begin
          vChild := TsgNode(vNode.ChildNodes[0]);
          vStrList.Add('<a name="' + vChild.Name + '"></a>');
          vStrList.Add(Format('<H3> %s </H3>', [vChild.Name]));
          vStrList.Add(vEntity.XMLDescription);
          vStrList.Add(Format('<H4> %s </H4>', ['Syntax:']));
          vIndSyntax := vStrList.Count;
          vSyntax := '&lt;<b>' + vChild.Name + '</b> ';
        end;
        AddParametersTableBegin(vStrList);
        if vNode.ChildNodesCount > 0 then
        begin
          vChild := TsgNode(vNode.ChildNodes[0]);
          for J := 0 to vChild.AttributeNodesCount - 1 do
            AddParameter(GetXMLId(vChild.AttributeNodes[J].Name));
        end;
        vSyntax := vSyntax + '/&gt;';
        vStrList.Insert(vIndSyntax, vSyntax + ' <br/>');
        AddParametersTableEnd(vStrList);
        if Assigned(vChild) and (vChild.ChildNodesCount > 0) then
        begin
          vStrList.Add('<br/>');
          vStrList.Add(vChild.Name + ' accepts the following child atributes: <br/>');
          AddParametersTableBegin(vStrList);
          for J := 0 to vChild.ChildNodesCount - 1 do
            AddParameter(GetXMLId(vChild.ChildNodes[J].Name));
          AddParametersTableEnd(vStrList);
        end;
      vStrList.Add('<br/>');
      if Assigned(vChild) then
        vClassName := vChild.Name
      else
        vClassName := cnstXMLError;
      if (Copy(vClassName, 1, 3) = cnstXMLPrefix)  then
        Delete(vClassName, 1, 3);
      S := vPathToExamples + 'Classes\' + vClassName +'.xml';
      vExampleNumber := 1;
      while FileExists(S) do
      begin
        vExample.LoadFromFile(S);
        S := vExample.Text;
        ReplaceAnsi(S, '<', '&lt;');
        if vExampleNumber = 1 then
          vStrList.Add('Example: <br/>')
        else
        begin
          vStrList.Add('Example ' + IntToStr(vExampleNumber) + ': <br/>');
          vStrList.Add(FindDescription(vExample.Text));
        end;
        vStrList.Add('<pre class="brush: xml;"> ');
        vStrList.Append(S);
        vStrList.Add('</pre>');
        S := FindDescription(vExample.Text);
        if (S <> '') and (vExampleNumber = 1) and (vDescriptionInd <> -1) then
          vStrList[vDescriptionInd] := S;
        Inc(vExampleNumber);
        S := vPathToExamples + 'Classes\' + vClassName + IntToStr(vExampleNumber) + '.xml';
      end;
      vStrList.Add('<hr/>');
      finally
        FreeAndNil(vEntity);
        FreeAndNil(vXMLInp);
        vDescriptionInd := -1;
      end;
    end;

    vStrList.Add('<a name="ClassesParameters"></a>');
    vStrList.Add('<H2> Parameters </H2>');
    AddParametersTableBegin(vStrList);
    vSyntax := '';
    for J := 0 to XMLIds.Count - 1 do
      AddParameter(TsgXMLId(XMLIds.Objects[J]), True);
    AddParametersTableEnd(vStrList);

    vStrList.Add('<a name="Types"></a>');
    vStrList.Add('<H2> Types </H2>');
    AddTypesTable;
    for vInd := Low(cnstDataTypes) to High(cnstDataTypes) do
      AddType(vInd);
    vStrList.Add('</table>');

    vStrList.Add('<a name="Events"></a>');
    vStrList.Add('<H2> Events </H2>');
    AddParametersTableBegin(vStrList);
    for vEvent := Low(TsgXMLEvent) to high(TsgXMLEvent)  do
      AddEvent(vEvent, True);
    AddParametersTableEnd(vStrList);
    vStrList.Add('<h3>SignToEvent examples</h3>');
    for J := 0 to vEvents.Count - 1 do
    begin
      vExample.LoadFromFile(FPathToXMLExamples + 'Events\' + vEvents[J]);
      S := vEvents[J];
      StringReplace(S,ExtractFileExt(vEvents[J]),'');
      vStrList.Add('<a name="' + S + '"></a>');
      vStrList.Add('<H3>' + S + '</H3>');
      S := FindDescription(vExample.Text);
      vStrList.Add(S);
      S := vExample.Text;
      ReplaceAnsi(S, '<', '&lt;');
      vStrList.Add('Example: <br/>');
      vStrList.Add('<pre class="brush: xml;"> ');
      vStrList.Append(S);
      vStrList.Add('</pre>');
    end;
    vStrList.Add('<a name="Commands"></a>');
    vStrList.Add('<H2> Command line examples </H2>');
    vStrList.Add('Command line supports hundreds of commands which are described in User Help. Here are some examples which shows the most important command line actions which enhance XML interface.');
    for J := 0 to vFiles.Count - 1 do
    begin
      vExample.LoadFromFile(FPathToXMLExamples + 'Commands\' + vFiles[J]);
      S := vFiles[J];
      StringReplace(S,ExtractFileExt(vFiles[J]),'');
      vStrList.Add('<a name="' + S + '"></a>');
      vStrList.Add('<H3>' + S + '</H3>');
      S := FindDescription(vExample.Text);
      vStrList.Add(S);
      S := vExample.Text;
      ReplaceAnsi(S, '<', '&lt;');
      vStrList.Add('Example: <br/>');
      vStrList.Add('<pre class="brush: xml;"> ');
      vStrList.Append(S);
      vStrList.Add('</pre>');
    end;
    vStrList.Add('</body> </html>');
  finally
    vStrList.SaveToFile(AFileName);
    vStrList.Free;
    vExample.Free;
    vFiles.Free;
    vEvents.Free;
    vSortedInstructions.Free;
  end;
end;

procedure TsgXMLIDE.CommandSaveToFile(ANode: TsgNodeSample;
  AResult: IsgResultNode);
const
  cnstXMLErrorFileName = 'The name of the output file is not specified.';
  cnstXMLErrorFileNameAndType = 'The file extension does not match the format.';
  cnstXMLErrorFormatType = 'Unsupported format.';
var
  I, vIndexFormat: Integer;
  vSaveTypeFormat, vFullPathFile, vExt, vFileName: string;
  vIsConvertImageToOle: Boolean;
  vSaveVersionFormat: TsgDWGVersion;
  vNode: TsgNode;
  vNodeSample: TsgNodeSample;
  vNodeAttr: TsgNodeAttrib;
begin
  vNodeSample := ANode.GetChildByName(cnstXMLExportParams);
  if Assigned(vNodeSample) then
  begin
    SaveToFileWithExportParams(vNodeSample);
    Exit;
  end;
  vNodeSample := ANode.GetAttributeByName(cnstXMLCmdFile);
  if not Assigned(vNodeSample) then
  begin
    DoMessageError(AResult.Errors, cnstXMLErrorFileName, ANode);
    Exit;
  end;
  vFullPathFile := vNodeSample.ValueAsStr;
  vExt := ExtractFileExt(vFullPathFile);
  vFileName := ExtractFileName(vFullPathFile);
  if Length(vFileName) = 0 then
  begin
    DoMessageError(AResult.Errors, cnstXMLErrorFileName, ANode);
    Exit;
  end;
  vNodeSample := ANode.GetAttributeByName(cnstXMLCmdType);
  if Assigned(vNodeSample) then
  begin
    vSaveTypeFormat := vNodeSample.ValueAsStr;
    if Length(vExt) = 0 then
      vFullPathFile := vFullPathFile + '.' + vSaveTypeFormat
    else
      if not SameText(Copy(vExt, 2, Length(vExt)), vSaveTypeFormat) then
      begin
        DoMessageError(AResult.Errors, cnstXMLErrorFileNameAndType, ANode);
        Exit;
      end;
  end
  else
  begin
    vSaveTypeFormat := cnstTypeSaveFormat[1].TypeFormat;
    if  Length(vExt) = 0 then
      vFullPathFile := vFullPathFile + '.' + vSaveTypeFormat
    else
    begin
      vSaveTypeFormat := Copy(vExt, 2, Length(vExt));
    end;
  end;
  vIndexFormat := -1;
  for I := Low(cnstTypeSaveFormat) to High(cnstTypeSaveFormat) do
  begin
    if SameText(vSaveTypeFormat, cnstTypeSaveFormat[I].TypeFormat) then
    begin
      vIndexFormat := I;
      Break;
    end;
  end;
  if vIndexFormat < 0 then
  begin
    DoMessageError(AResult.Errors, cnstXMLErrorFormatType, ANode);
    Exit;
  end;

  vNodeSample := ANode.GetAttributeByName(cnstXMLCmdVersion);
  if Assigned(vNodeSample) then
  begin
    for vSaveVersionFormat := Low(cnstVersionFile) to High(cnstVersionFile) do
      if SameText(vNodeSample.ValueAsStr, cnstVersionFile[vSaveVersionFormat]) then
        Break
  end
  else
  begin
    if cnstTypeSaveFormat[vIndexFormat].IsDWG then
      vSaveVersionFormat := acR2000
    else
      vSaveVersionFormat := acR2004;
  end;

  if not (vSaveVersionFormat in cnstSupportDWGVersion) then
  begin
    DoMessageError(AResult.Errors, cnstXMLErrorFormatType, ANode);
    Exit;
  end;

  if cnstTypeSaveFormat[vIndexFormat].IsDWG then
    vSaveVersionFormat := acR2000;

  vNodeSample := ANode.GetAttributeByName(cnstXMLCmdIsConvertImageToOle);
  if Assigned(vNodeSample) then
    vIsConvertImageToOle := vNodeSample.ValueAsBool
  else
    vIsConvertImageToOle := True;

  vNode := AResult.Output;
  vNodeAttr := vNode.AddAttribNV(cnstXMLCmdOut, '');

  if CADEditor.SaveImage(vFullPathFile, cnstTypeSaveFormat[vIndexFormat].IsDWG,
    vSaveVersionFormat, vIsConvertImageToOle) then
       vNodeAttr.Value := cnstXMLCmdSaveOK
     else
       vNodeAttr.Value := cnstXMLCmdSaveERROR;
end;

procedure TsgXMLIDE.ConvertStreamToOutputBase64(AStream: TStream;
  AOutput: TsgNode; AFormat: TsgExportFormat);
var
  vStreamBase64: TStringStream;
begin
  vStreamBase64 := TStringStream.Create('');
  try
    AStream.Seek(0, 0{soFromBeginning});
    EncodeBase64(AStream, TStream(vStreamBase64));
    AOutput.AddAttribNV(cnstXMLFormat).Value := GetExportExt(AFormat);
    AOutput.AddAttribNV(cnstXMLCmdBase64).Value := vStreamBase64.DataString;
  finally
    FreeAndNil(vStreamBase64);
  end;
end;

procedure TsgXMLIDE.SaveToFileWithExportParams(ANode: TsgNodeSample);
var
  vSaveResult: Integer;
  vNodeOut: TsgNode;
  vStream: TStream;
  vNewStreamCreated: Boolean;
  vFormat: Integer;
begin
  if MainApplication <> nil then
  begin
    vStream := nil;
    vSaveResult := MainApplication.SaveFileWithXmlParams(
      SaveNodeToXMLString(ANode), vStream, vNewStreamCreated, vFormat);
    try
    if vSaveResult <> cnstSaveResultOk then
    begin
      vNodeOut := TsgNode(FRootOut.GetChildByName(cnstXMLOutput));
      if Assigned(vNodeOut) then
        vNodeOut.AddChildNV(cnstXMLResult).TextAsStr :=
           GetSaveResultStr(vSaveResult);
    end
    else
      if Assigned(FRootOut) and (vStream <> nil) then
        ConvertStreamToOutputBase64(vStream,
          FRootOut.AddChildNV(cnstXMLResult), TsgExportFormat(vFormat))
    finally
      if vNewStreamCreated then
        vStream.Free;
    end;
  end;
end;

procedure TsgXMLIDE.SendEvents(const AEventResult: TsgNode;
  const AImage: TObject; AImgGuid: PGUID = nil);
var
  vGuid: TGUID;
  vEvents: TsgParser;
  vRoot, vResults, vErrors: TsgNode;
begin
  if AImage is TsgCADImage then
  begin
    vGuid := TsgCADImage(AImage).Guid;
    AImgGuid := @vGuid;
  end;
  vEvents := TsgParser.Create;
  try
    InitRoot(vEvents, vRoot);
    vResults := vRoot.AddChildNV(cnstXMLResults);
    vResults.AddChild(AEventResult);
    if AImgGuid <> nil then
      AEventResult.AddAttribNV(cnstXMLCmdGuid).ValueAsStr := GUIDToString(AImgGuid^);
    vErrors := TsgNode(AEventResult.GetChildByName(cnstXMLErrors));
    if Assigned(vErrors) and (vErrors.ChildNodesCount > 0) then
      vResults.AddAttribNV(cnstXMLErrors).ValueAsInt := vErrors.ChildNodesCount;
    FOnXMLMessage(vEvents.SaveToString);
  finally
    vEvents.Free;
  end;
end;

procedure TsgXMLIDE.SetCADEditor(const Value: TsgProxyEditor);
begin
  FCADEditor := Value;
  if Assigned(FCADEditor) then
  begin
    FCADEditor.OnSelectEntities := OnSelectEntities;
    FCADEditor.OnMouseDown := OnMouseDown;
    FCADEditor.OnMouseMove := OnMouseMove;
    FCADEditor.OnMouseUp := OnMouseUp;
    FCADEditor.OnMouseWheel := OnMouseWheel;
    FCADEditor.OnConfirmEntitiesDeletion := OnConfirmEntitiesDeletion;

    FCADEditor.OnChangeEntities := OnChangeEntities;
    FCADEditor.OnCopyEntities := OnCopyEntities;
    FCADEditor.OnCreateEntities := OnCreateEntities;
    FCADEditor.OnDeleteEntities := OnDeleteEntities;
    FCADEditor.OnCancelEntities := OnCancelEntities;
    FCADEditor.OnLayoutAfterChange := OnLayoutAfterChange;
    FCADEditor.OnLayoutBeforeChange := OnLayoutBeforeChange;
    FCADEditor.OnPasteEntities := OnPasteEntities;
    FCADEditor.OnRedoEntities := OnRedoEntities;
    FCADEditor.OnUndoEntities := OnUndoEntities;

    FCADEditor.OnKeyDown := OnKeyDown;
    FCADEditor.OnKeyUp := OnKeyUp;
    FCADEditor.OnKeyPress := OnKeyPress;
    FCADEditor.OnPaint := OnPaint;
  end;
end;

procedure TsgXMLIDE.SetCADImage(const Value: TsgCADImage);
begin
  FSelectedHandles := nil;
  FCADImage := Value;
  if Assigned(FCADImage) then
    FSelectedHandles := TsgDXFConverterAccess(FCADImage.Converter).ConvExtended.SelectedHandles;
end;

procedure TsgXMLIDE.OnEventCustom(const AType: TsgXMLEvent;
  const Image, AEntities: TObject;
  const AttribNames, AttribValues: array of string;
  const ANeedGuid: Boolean);
var
  I: Integer;
  vNode, vOut: TsgNode;
  vImgGuid: TGUID;
  vGuid: PGUID;
begin
  vGuid := nil;
  if ANeedGuid then
  begin
    vGuid := @vImgGuid;
    vImgGuid := GetImageGuid;
  end;
  vNode := CreateResultEvent(cnstEvents[AType].Name);
  try
    try
      vOut := vNode.AddChildNV(cnstXMLOutput);
      for I := Low(AttribNames) to High(AttribNames) do
        if Length(AttribValues[I]) > 0 then
          vOut.AddAttribNV(AttribNames[I], AttribValues[I]);
      if Image is TsgCADImage then
        vImgGuid := TsgCADImage(Image).Guid;
      if Assigned(AEntities) then
        AddEntitiesToNode(vOut, Image, AEntities);
    except
      on E: Exception do
        AddExceptionToNode(vNode, E);
    end;
  finally
    SendEvents(vNode, nil, vGuid);
  end;
end;

procedure TsgXMLIDE.OnChangeEntities(const Image, AEntities: TObject);
begin
  if xeOnChangeEntities in FXMLEvents then
    OnEventCustom(xeOnChangeEntities, Image, AEntities, [], [], True);
end;

procedure TsgXMLIDE.OnConfirmEntitiesDeletion(const Image, AEntities: TObject;
  var AValue: Integer);
begin
  AValue := cnstConfirmUndefined;
  if not (xeOnConfirmEntitiesDeletion in FXMLEvents) then
    Exit;
  AValue := cnstConfirmNo;
  if xeOnConfirmEntitiesDeletion in FXMLEvents then
    OnEventCustom(xeOnConfirmEntitiesDeletion, Image, AEntities, [], [], True);
end;

procedure TsgXMLIDE.OnApplicationExeption(Sender: TObject; E: Exception);
var
  vSender, ExClass, ExInfo: string;
begin
  try
    if Assigned(FOnApplicationExeptionPrev) then
      FOnApplicationExeptionPrev(Sender, E);
  finally
    if (xeApplicationExeption in FXMLEvents) then
    begin
      vSender := HandleToStr(UInt64(Sender));
      ExClass := E.ClassName;
      ExInfo :=  ExceptionToString(E);
      OnEventCustom(xeApplicationExeption, nil, nil, ['sender', 'class', 'message'],
        [vSender, ExClass, ExInfo], True);
    end;
  end;
end;

procedure TsgXMLIDE.OnContextMenuClick(Sender: TObject);
var
  vMenuItem: TMenuItem;
begin
  vMenuItem := TMenuItem(Sender);
  OnEventCustom(xeOnContextClick, nil, nil,
    [cnstXMLCmdCaption, cnstXMLCmdIndex],
    [vMenuItem.Caption, IntToStr(vMenuItem.Parent.IndexOf(vMenuItem))], True);
end;

procedure TsgXMLIDE.OnCopyEntities(const Image, AEntities: TObject);
begin
  if xeOnCopyEntities in FXMLEvents then
    OnEventCustom(xeOnCopyEntities, Image, AEntities, [], [], True);
end;

procedure TsgXMLIDE.OnCreateEntities(const Image, AEntities: TObject);
begin
  if xeOnCreateEntities in FXMLEvents then
    OnEventCustom(xeOnCreateEntities, Image, AEntities, [], [], True);
end;

procedure TsgXMLIDE.OnDeleteEntities(const Image, AEntities: TObject);
begin
  if xeOnDeleteEntities in FXMLEvents then
    OnEventCustom(xeOnDeleteEntities, Image, AEntities, [], [], True);
end;

procedure TsgXMLIDE.OnKeyDown(Sender: TObject; var Key: Word;
  Shift: TShiftState);
begin
  if xeOnKeyDown in FXMLEvents then
    OnEventCustom(xeOnKeyDown, nil, nil, [cnstXMLCmdKeyChar, cnstXMLCmdShift],
      [IntToStr(Integer(Key)), ShiftToStr(Shift)], True);
end;

procedure TsgXMLIDE.OnKeyPress(Sender: TObject; var Key: Char);
begin
  if xeOnKeyPress in FXMLEvents then
    OnEventCustom(xeOnKeyPress, nil, nil,
     [cnstXMLCmdKeyChar], [IntToStr(Integer(Key))], True);
end;

procedure TsgXMLIDE.OnKeyUp(Sender: TObject; var Key: Word; Shift: TShiftState);
begin
  if xeOnKeyUp in FXMLEvents then
    OnEventCustom(xeOnKeyUp, nil, nil, [cnstXMLCmdKeyChar, cnstXMLCmdShift],
      [IntToStr(Integer(Key)), ShiftToStr(Shift)], True);
end;

procedure TsgXMLIDE.OnLayoutBeforeChange(const Image, AEntities: TObject);
begin
  if xeOnLayoutBeforeChange in FXMLEvents then
    OnEventCustom(xeOnLayoutBeforeChange, Image, AEntities, [], [], True);
end;

procedure TsgXMLIDE.OnLayoutAfterChange(const Image, AEntities: TObject);
begin
  if xeOnLayoutBeforeChange in FXMLEvents then
    OnEventCustom(xeOnLayoutAfterChange, Image, AEntities, [], [], True);
end;

procedure TsgXMLIDE.OnMouseDown(Sender: TObject; Button: TMouseButton;
    Shift: TShiftState; X, Y: Integer);
begin
  OnMouseEvent(xeOnMouseDown, Sender, Button, Shift, X, Y, 0);
end;

procedure TsgXMLIDE.OnMouseEvent(const AType: TsgXMLEvent; Sender: TObject;
  Button: TMouseButton; Shift: TShiftState; X, Y, WheelDelta: Integer);
var
  vNode, vOut: TsgNode;
  vImgGuid: TGUID;
  vCADCoords: TFPoint;
begin
  if not (AType in FXMLEvents) then
    Exit;
  vImgGuid := GetImageGuid;
  vNode := CreateResultEvent(cnstEvents[AType].Name);
  try
    try
      vOut := vNode.AddChildNV(cnstXMLOutput);
      if not (AType in [xeOnMouseMove, xeOnMouseWheel]) then
      begin
        case Button of
          mbLeft   : vOut.AddAttribNV(cnstXMLCmdButton, cnstXMLCmdLButton);
          mbRight  : vOut.AddAttribNV(cnstXMLCmdButton, cnstXMLCmdRButton);
          mbMiddle : vOut.AddAttribNV(cnstXMLCmdButton, cnstXMLCmdMButton);
        end;
      end;
      vOut.AddAttribNV(cnstXMLCmdX, IntToStr(X));
      vOut.AddAttribNV(cnstXMlCmdY, IntToStr(Y));
      if CADEDitor <> nil then
      begin
        case AType of
          xeOnMouseDown:  vCADCoords := CADEditor.CoordsMDown;
          xeOnMouseUp:    vCADCoords := CADEditor.CoordsMUp;
        else
          vCADCoords := CADEditor.CoordsMMove;
        end;
        vOut.AddAttribNV(cnstXMLCmdPoint).ValueAsFPoint := vCADCoords;
      end;
      AddAttribShift(vOut, Shift);
      if AType = xeOnMouseWheel then
        vOut.AddAttribNV(cnstXMLCmdWheelDelta).ValueAsInt := WheelDelta;
    except
      on E: Exception do
        AddExceptionToNode(vNode, E);
    end;
  finally
    SendEvents(vNode, nil, @vImgGuid);
  end;
end;

procedure TsgXMLIDE.OnMouseMove(Sender: TObject; Shift: TShiftState; X, Y: Integer);
begin
  OnMouseEvent(xeOnMouseMove, Sender, mbLeft, Shift, X, Y, 0);
end;

procedure TsgXMLIDE.OnMouseUp(Sender: TObject; Button: TMouseButton;
  Shift: TShiftState; X, Y: Integer);
begin
  OnMouseEvent(xeOnMouseUp, Sender, Button, Shift, X, Y, 0);
end;

procedure TsgXMLIDE.OnMouseWheel(Sender: TObject; Shift: TShiftState;
  WheelDelta: Integer; MousePos: TPoint; var Handled: Boolean);
begin
  Handled := False;
  OnMouseEvent(xeOnMouseWheel, Sender, mbLeft, Shift,
    MousePos.X, MousePos.Y, WheelDelta);
end;

procedure TsgXMLIDE.OnPaint(Sender: TObject);
begin
  if xeOnPaint in FXMLEvents then
    OnEventCustom(xeOnPaint, nil, nil, [], [], True);
end;

procedure TsgXMLIDE.OnPasteEntities(const Image, AEntities: TObject);
begin
  if xeOnPasteEntities in FXMLEvents then
    OnEventCustom(xeOnPasteEntities, Image, AEntities, [], [], True);
end;

procedure TsgXMLIDE.OnRedoEntities(const Image, AEntities: TObject);
begin
  if xeOnRedoEntities in FXMLEvents then
    OnEventCustom(xeOnRedoEntities, Image, AEntities, [], [], True);
end;

procedure TsgXMLIDE.OnSelectEntities(const Image, AEntities: TObject);
begin
  if xeOnSelectEntities in FXMLEvents then
    OnEventCustom(xeOnSelectEntities, Image, AEntities, [], [], True);
end;

procedure TsgXMLIDE.OnUndoEntities(const Image, AEntities: TObject);
begin
  if xeOnUndoEntities in FXMLEvents then
    OnEventCustom(xeOnUndoEntities, Image, AEntities, [], [], True);
end;

procedure TsgXMLIDE.OnCancelEntities(const Image, AEntities: TObject);
begin
  if xeOnCancelEntities in FXMLEvents then
    OnEventCustom(xeOnCancelEntities, Image, AEntities, [], [], True);
end;

procedure TsgXMLIDE.SetOnXMLMessage(const Value: TsgXMLMessage);
begin
  FOnXMLMessage := Value;
end;

// Mode
// 0 - set select
// 1 - remove from select
// 2 - add to select
function TsgXMLIDE.SetSelectEntities(AEntities: TList;
  const ANode: TsgNodeSample; const AMode: Integer = 0): Boolean;
var
  vSelectedEntities: TList;
  I, vCountBefore, vCountAfter: Integer;
begin
  Result := False;
  if Assigned(CADEditor) then
  begin
    case AMode of
     1, 2:
      begin
        vSelectedEntities := TList.Create;
        try
          CADEditor.GetSelectedEntities(vSelectedEntities);
          vCountBefore := vSelectedEntities.Count;
          if AMode > 1 then
          begin
            for I := 0 to AEntities.Count - 1 do
              vSelectedEntities.Add(AEntities[I]);
          end
          else
          begin
            for I := 0 to AEntities.Count - 1 do
              vSelectedEntities.Remove(AEntities[I]);
          end;
          vCountAfter := CADEditor.SetSelectedEntities(AEntities);
          if vCountAfter > vCountBefore then
            Result := True;
        finally
          vSelectedEntities.Free;
        end;
      end;
    else
      Result := True;
      CADEditor.SetSelectedEntities(AEntities);
    end
  end;
end;

{ TsgProxyEditor }

constructor TsgProxyEditor.Create(const AOwner: TObject);
begin
  inherited Create;
end;

procedure TsgProxyEditor.DoChangeEntities(const Image, AEntities: TObject);
begin
  if Assigned(FOnChangeEntities) then
    FOnChangeEntities(Image, AEntities);
end;

procedure TsgProxyEditor.DoCancelEntities(const Image, AEntities: TObject);
begin
  if Assigned(FOnCancelEntities) then
    FOnCancelEntities(Image, AEntities);
end;

function TsgProxyEditor.DoCanDeleteEntities(const Image, AEntities: TObject): Integer;
begin
  Result := cnstConfirmUndefined;
  if Assigned(FOnConfirmEntitiesDeletion) then
  begin
    Result := cnstConfirmNo;
    FOnConfirmEntitiesDeletion(Image, AEntities, Result);
  end;
end;

procedure TsgProxyEditor.DoCreateEntities(const Image, AEntities: TObject);
begin
  if Assigned(FOnCreateEntities) then
    FOnCreateEntities(Image, AEntities);
end;

procedure TsgProxyEditor.DoCopyEntities(const Image, AEntities: TObject);
begin
  if Assigned(FOnCopyEntities) then
    FOnCopyEntities(Image, AEntities);
end;

procedure TsgProxyEditor.DoDeleteEntities(const Image, AEntities: TObject);
begin
  if Assigned(FOnDeleteEntities) then
    FOnDeleteEntities(Image, AEntities);
end;

procedure TsgProxyEditor.DoLayoutChange(const Image, AEntities: TObject);
begin
  if Assigned(FOnLayoutChange) then
    FOnLayoutChange(Image, AEntities);
end;

procedure TsgProxyEditor.DoLayoutBeforeChange(const Image, AEntities: TObject);
begin
  if Assigned(FOnLayoutBeforeChange) then
    FOnLayoutBeforeChange(Image, AEntities);
end;

procedure TsgProxyEditor.DoMouseDown(Sender: TObject; Button: TMouseButton;
  Shift: TShiftState; X, Y: Integer);
begin
  if Assigned(FOnMouseDownEvent) then
    FOnMouseDownEvent(Sender, Button, Shift, X, Y);
end;

procedure TsgProxyEditor.DoMouseMove(Sender: TObject; Shift: TShiftState; X, Y: Integer);
begin
  if Assigned(FOnMouseMoveEvent) then
    FOnMouseMoveEvent(Sender, Shift, X, Y);
end;

procedure TsgProxyEditor.DoMouseUp(Sender: TObject; Button: TMouseButton;
  Shift: TShiftState; X, Y: Integer);
begin
  if Assigned(FOnMouseUpEvent) then
    FOnMouseUpEvent(Sender, Button, Shift, X, Y);
end;

procedure TsgProxyEditor.DoMouseWheel(Sender: TObject; Shift: TShiftState;
  WheelDelta: Integer; X, Y: Integer; var AHadnled: Boolean);
begin
  if Assigned(FOnMouseWheel) then
    FOnMouseWheel(Sender, Shift, WheelDelta, Point(X, Y), AHadnled);
end;

procedure TsgProxyEditor.DoKeyDown(Sender: TObject; var Key: Word; Shift: TShiftState);
begin
  if Assigned(FOnKeyDown) then
    FOnKeyDown(Sender, Key, Shift);
end;

procedure TsgProxyEditor.DoKeyUp(Sender: TObject; var Key: Word; Shift: TShiftState);
begin
  if Assigned(FOnKeyUp) then
    FOnKeyUp(Sender, Key, Shift);
end;

procedure TsgProxyEditor.DoKeyPress(Sender: TObject; var Key: Char);
begin
  if Assigned(FOnKeyPress) then
    FOnKeyPress(Sender, Key);
end;

procedure TsgProxyEditor.DoPaint(Sender: TObject);
begin
  if Assigned(FOnPaint) then
    FOnPaint(Sender);
end;

procedure TsgProxyEditor.DoPasteEntities(const Image, AEntities: TObject);
begin
  if Assigned(FOnPasteEntities) then
    FOnPasteEntities(Image, AEntities);
end;

procedure TsgProxyEditor.DoRedoEntities(const Image, AEntities: TObject);
begin
  if Assigned(FOnRedoEntities) then
    FOnRedoEntities(Image, AEntities);
end;

procedure TsgProxyEditor.DoSelectEntities(const Image, AEntities: TObject);
begin
  if Assigned(FOnSelectEntities) then
    FOnSelectEntities(Image, AEntities);
end;

procedure TsgProxyEditor.DoUndoEntities(const Image, AEntities: TObject);
begin
  if Assigned(FOnUndoEntities) then
    FOnUndoEntities(Image, AEntities);
end;

function TsgProxyEditor.GetCurrentDrawingGuid: TGUID;
begin
  Result := cntsErrorGuid;
end;

function TsgProxyEditor.IsOnlyCommand: Boolean;
begin
  Result := False;
end;

initialization

finalization
  FreeAndNil(KeyWords)

end.