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// Upgraded to Delphi 2009: Sebastian Zierer
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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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{* SysTools: StNVBits.pas 4.04 *}
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{*********************************************************}
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{* SysTools: non visual component for TStBits *}
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{*********************************************************}
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{$I StDefine.inc}
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unit StNVBits;
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interface
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uses
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Windows,
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Classes,
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StBase, StBits, StNVCont;
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type
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TStNVBits = class(TStNVContainerBase)
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{.Z+}
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protected {private}
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{property variables}
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FContainer : TStBits; {instance of the container}
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FMaxBits : LongInt;
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{property methods}
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procedure SetMaxBits(Value : LongInt);
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protected
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{virtual property methods}
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function GetOnLoadData : TStLoadDataEvent;
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override;
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function GetOnStoreData : TStStoreDataEvent;
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override;
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procedure SetOnLoadData(Value : TStLoadDataEvent);
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override;
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procedure SetOnStoreData(Value : TStStoreDataEvent);
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override;
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public
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constructor Create(AOwner : TComponent);
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override;
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destructor Destroy;
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override;
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{.Z-}
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property Container : TStBits
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read FContainer;
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published
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property MaxBits : LongInt
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read FMaxBits
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write SetMaxBits default 100;
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property OnLoadData;
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property OnStoreData;
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end;
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implementation
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{*** TStNVBits ***}
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constructor TStNVBits.Create(AOwner : TComponent);
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begin
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inherited Create(AOwner);
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{defaults}
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FMaxBits := 100;
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if Classes.GetClass(TStBits.ClassName) = nil then
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RegisterClass(TStBits);
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FContainer := TStBits.Create(FMaxBits-1);
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end;
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destructor TStNVBits.Destroy;
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begin
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FContainer.Free;
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FContainer := nil;
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inherited Destroy;
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end;
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function TStNVBits.GetOnLoadData : TStLoadDataEvent;
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begin
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Result := FContainer.OnLoadData;
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end;
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function TStNVBits.GetOnStoreData : TStStoreDataEvent;
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begin
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Result := FContainer.OnStoreData;
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end;
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procedure TStNVBits.SetMaxBits(Value : LongInt);
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var
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HoldOnLoadData : TStLoadDataEvent;
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HoldOnStoreData : TStStoreDataEvent;
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begin
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{setting MaxBits will destroy exisiting data}
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if Value < 0 then
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Value := 0;
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FMaxBits := Value;
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HoldOnLoadData := FContainer.OnLoadData;
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HoldOnStoreData := FContainer.OnStoreData;
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FContainer.Free;
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FContainer := TStBits.Create(FMaxBits-1);
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FContainer.OnLoadData := HoldOnLoadData;
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FContainer.OnStoreData := HoldOnStoreData;
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end;
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procedure TStNVBits.SetOnLoadData(Value : TStLoadDataEvent);
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begin
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FContainer.OnLoadData := Value;
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end;
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procedure TStNVBits.SetOnStoreData(Value : TStStoreDataEvent);
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begin
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FContainer.OnStoreData := Value;
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end;
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end.
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