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(* ***** BEGIN LICENSE BLOCK *****
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* Version: MPL 1.1
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*
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* The contents of this file are subject to the Mozilla Public License Version
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* 1.1 (the "License"); you may not use this file except in compliance with
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* the License. You may obtain a copy of the License at
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* http://www.mozilla.org/MPL/
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*
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* Software distributed under the License is distributed on an "AS IS" basis,
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* WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
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* for the specific language governing rights and limitations under the
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* License.
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*
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* The Original Code is TurboPower SysTools
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*
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* The Initial Developer of the Original Code is
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* TurboPower Software
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*
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* Portions created by the Initial Developer are Copyright (C) 1996-2002
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* the Initial Developer. All Rights Reserved.
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*
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* Contributor(s):
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*
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* ***** END LICENSE BLOCK ***** *)
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{
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TODO:
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1. What is the 'Path' of TStEclipseRecord?
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}
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unit _StEclipses;
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interface
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uses
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Windows, ComObj, ActiveX, StEclpse, SysTools_TLB;
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type
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TStEclipseRecord = class(TAutoIntfObject, IStEclipseRecord)
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private
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FOwner : StEclpse.TStEclipseRecord;
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public
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constructor Create(AOwner: StEclpse.TStEclipseRecord);
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protected
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function Get_EType: TStEclipseType; safecall;
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function Get_Magnitude: Double; safecall;
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function Get_Hemisphere: TStHemisphereType; safecall;
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function Get_LContacts: IStContactTimes; safecall;
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function Get_Path: OleVariant; safecall;
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end;
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TStContactTimes = class(TAutoIntfObject, IStContactTimes)
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private
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FOwner : StEclpse.TStContactTimes;
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public
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constructor Create(AOwner: StEclpse.TStContactTimes);
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protected
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function Get_UT1: TDateTime; safecall;
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function Get_UT2: TDateTime; safecall;
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function Get_FirstContact: TDateTime; safecall;
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function Get_SecondContact: TDateTime; safecall;
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function Get_MidEclipse: TDateTime; safecall;
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function Get_ThirdContact: TDateTime; safecall;
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function Get_FourthContact: TDateTime; safecall;
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end;
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TStEclipses = class(TAutoObject, IStEclipses, IEnumVariant)
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private
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FOwner : StEclpse.TStEclipses;
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FEnumPos : Integer;
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public
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procedure Initialize; override;
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destructor Destroy; override;
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protected
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function Get__NewEnum: IUnknown; safecall;
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{ IEnumVariant }
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function Next(celt: LongInt; out elt; pceltFetched: PLongInt): HResult; stdcall;
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function Skip(celt: LongInt): HResult; stdcall;
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function Reset: HResult; stdcall;
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function Clone(out Enum: IEnumVariant): HResult; stdcall;
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function Get_Eclipses(Index: Integer): IStEclipseRecord; safecall;
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procedure FindEclipses(Year: Integer); safecall;
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function Get_Count: Integer; safecall;
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end;
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implementation
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uses ComServ, StList;
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constructor TStEclipseRecord.Create(AOwner: StEclpse.TStEclipseRecord);
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begin
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inherited Create(ComServer.TypeLib, IStEclipseRecord);
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FOwner := AOwner;
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end;
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function TStEclipseRecord.Get_EType: TStEclipseType;
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begin
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Result := TStEclipseType(FOwner.EType);
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end;
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function TStEclipseRecord.Get_Magnitude: Double;
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begin
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Result := FOwner.Magnitude;
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end;
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function TStEclipseRecord.Get_Hemisphere: TStHemisphereType;
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begin
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Result := TStHemisphereType(FOwner.Hemisphere);
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end;
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function TStEclipseRecord.Get_LContacts: IStContactTimes;
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begin
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Result := TStContactTimes.Create(FOwner.LContacts);
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end;
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function TStEclipseRecord.Get_Path: OleVariant;
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begin
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// Result := 0;
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end;
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constructor TStContactTimes.Create(AOwner: StEclpse.TStContactTimes);
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begin
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inherited Create(ComServer.TypeLib, IStContactTimes);
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FOwner := AOwner;
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end;
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function TStContactTimes.Get_UT1: TDateTime;
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begin
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Result := FOwner.UT1;
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end;
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function TStContactTimes.Get_UT2: TDateTime;
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begin
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Result := FOwner.UT2;
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end;
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function TStContactTimes.Get_FirstContact: TDateTime;
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begin
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Result := FOwner.FirstContact;
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end;
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function TStContactTimes.Get_SecondContact: TDateTime;
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begin
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Result := FOwner.SecondContact;
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end;
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function TStContactTimes.Get_MidEclipse: TDateTime;
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begin
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Result := FOwner.MidEclipse;
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end;
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function TStContactTimes.Get_ThirdContact: TDateTime;
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begin
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Result := FOwner.ThirdContact;
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end;
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function TStContactTimes.Get_FourthContact: TDateTime;
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begin
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Result := FOwner.FourthContact;
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end;
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procedure TStEclipses.Initialize;
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begin
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inherited Initialize;
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FOwner := StEclpse.TStEclipses.Create(TStListNode);
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FEnumPos := 0;
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end;
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destructor TStEclipses.Destroy;
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begin
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FOwner.Free;
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inherited Destroy;
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end;
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function TStEclipses.Get__NewEnum: IUnknown;
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begin
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Result := Self;
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end;
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function TStEclipses.Next(celt: LongInt; out elt; pceltFetched: PLongInt): HResult;
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var
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V : OleVariant;
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I : Integer;
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begin
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Result := S_FALSE;
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try
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if pceltFetched <> nil then
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pceltFetched^ := 0;
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for I := 0 to celt - 1 do begin
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if FEnumPos >= FOwner.Count then begin
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FEnumPos := 0;
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Exit;
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end;
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V := Get_Eclipses(FEnumPos);
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TVariantArgList(elt)[I] := TVariantArg(V);
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// Prevent COM garbage collection
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TVarData(V).VType := varEmpty;
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TVarData(V).VInteger := 0;
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Inc(FEnumPos);
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if pceltFetched <> nil then
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Inc(pceltFetched^);
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end;
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except
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end;
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if (pceltFetched = nil) or ((pceltFetched <> nil) and (pceltFetched^ = celt)) then
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Result := S_OK;
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end;
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function TStEclipses.Skip(celt: LongInt): HResult;
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begin
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Inc(FEnumPos, celt);
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Result := S_OK;
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end;
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function TStEclipses.Reset: HResult;
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begin
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FEnumPos := 0;
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Result := S_OK;
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end;
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function TStEclipses.Clone(out Enum: IEnumVariant): HResult;
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begin
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Enum := nil;
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Result := S_OK;
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try
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Enum := Self.Create;
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TStEclipses(Enum).FOwner := FOwner;
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except
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Result := E_OUTOFMEMORY;
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end;
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end;
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function TStEclipses.Get_Eclipses(Index: Integer): IStEclipseRecord;
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begin
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Result := TStEclipseRecord.Create(FOwner.Eclipses[Index]^);
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end;
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procedure TStEclipses.FindEclipses(Year: Integer);
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begin
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FOwner.FindEclipses(Year);
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end;
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function TStEclipses.Get_Count: Integer;
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begin
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Result := FOwner.Count;
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end;
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initialization
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TAutoObjectFactory.Create(ComServer, TStEclipses, Class_StEclipses, ciMultiInstance, tmBoth);
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end.
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