tpsystools_4.04/source/StDbBarC.pas

(* ***** BEGIN LICENSE BLOCK *****
 * Version: MPL 1.1
 *
 * The contents of this file are subject to the Mozilla Public License Version
 * 1.1 (the "License"); you may not use this file except in compliance with
 * the License. You may obtain a copy of the License at
 * http://www.mozilla.org/MPL/
 *
 * Software distributed under the License is distributed on an "AS IS" basis,
 * WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
 * for the specific language governing rights and limitations under the
 * License.
 *
 * The Original Code is TurboPower SysTools
 *
 * The Initial Developer of the Original Code is
 * TurboPower Software
 *
 * Portions created by the Initial Developer are Copyright (C) 1996-2002
 * the Initial Developer. All Rights Reserved.
 *
 * Contributor(s):
 *
 * ***** END LICENSE BLOCK ***** *)

{*********************************************************}
{* SysTools: StDbBarC.pas 4.04                           *}
{*********************************************************}
{* SysTools: data aware bar code components              *}
{*********************************************************}

{$I StDefine.inc}

unit StDbBarC;

interface

uses
  Windows, Classes, ClipBrd, Controls, Graphics, Messages, SysUtils,
  Db, DbCtrls, DbTables,
  StConst, StBarc;

type
  TStDbBarCode = class(TStBarCode)
  protected {private}
    {.Z+}
    FDataLink : TFieldDataLink;

    procedure DataChange(Sender : TObject);
    function GetDataField : string;
    function GetDataSource : TDataSource;
    procedure SetDataField(const Value : string);
    procedure SetDataSource(Value : TDataSource);

  public
    constructor Create(AOwner : TComponent);
      override;
    destructor Destroy;
      override;
    {.Z+}
  published
    property Code
      stored False;

    property DataField : string
      read GetDataField
      write SetDataField;

    property DataSource : TDataSource
      read GetDataSource
      write SetDataSource;
  end;


implementation


{*** TStDbBarCode ***}

constructor TStDbBarCode.Create(AOwner : TComponent);
begin
  inherited Create(AOwner);

  FDataLink := TFieldDataLink.Create;
  FDataLink.OnDataChange := DataChange;
end;

procedure TStDbBarCode.DataChange(Sender : TObject);
begin
  if FDataLink.Field = nil then
    Code := '12345678922'
  else
    Code := FDataLink.Field.DisplayText;
end;

destructor TStDbBarCode.Destroy;
begin
  FDataLink.OnDataChange := nil;
  FDataLink.Free;
  FDataLink := nil;

  inherited Destroy;
end;

function TStDbBarCode.GetDataField : string;
begin
  Result := FDataLink.FieldName;
end;

function TStDbBarCode.GetDataSource : TDataSource;
begin
  Result := FDataLink.DataSource
end;

procedure TStDbBarCode.SetDataField(const Value : string);
begin
  FDataLink.FieldName := Value;
end;

procedure TStDbBarCode.SetDataSource(Value : TDataSource);
begin
  FDataLink.DataSource := Value;
end;


end.
1	(* *** BEGIN LICENSE BLOCK ***
2	* Version: MPL 1.1
3	*
4	* The contents of this file are subject to the Mozilla Public License Version
5	* 1.1 (the "License"); you may not use this file except in compliance with
6	* the License. You may obtain a copy of the License at
7	* http://www.mozilla.org/MPL/
8	*
9	* Software distributed under the License is distributed on an "AS IS" basis,
10	* WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
11	* for the specific language governing rights and limitations under the
12	* License.
13	*
14	* The Original Code is TurboPower SysTools
15	*
16	* The Initial Developer of the Original Code is
17	* TurboPower Software
18	*
19	* Portions created by the Initial Developer are Copyright (C) 1996-2002
20	* the Initial Developer. All Rights Reserved.
21	*
22	* Contributor(s):
23	*
24	* *** END LICENSE BLOCK *** *)
25
26	{*********************************************************}
27	{* SysTools: StDbBarC.pas 4.04 *}
28	{*********************************************************}
29	{* SysTools: data aware bar code components *}
30	{*********************************************************}
31
32	{$I StDefine.inc}
33
34	unit StDbBarC;
35
36	interface
37
38	uses
39	Windows, Classes, ClipBrd, Controls, Graphics, Messages, SysUtils,
40	Db, DbCtrls, DbTables,
41	StConst, StBarc;
42
43	type
44	TStDbBarCode = class(TStBarCode)
45	protected {private}
46	{.Z+}
47	FDataLink : TFieldDataLink;
48
49	procedure DataChange(Sender : TObject);
50	function GetDataField : string;
51	function GetDataSource : TDataSource;
52	procedure SetDataField(const Value : string);
53	procedure SetDataSource(Value : TDataSource);
54
55	public
56	constructor Create(AOwner : TComponent);
57	override;
58	destructor Destroy;
59	override;
60	{.Z+}
61	published
62	property Code
63	stored False;
64
65	property DataField : string
66	read GetDataField
67	write SetDataField;
68
69	property DataSource : TDataSource
70	read GetDataSource
71	write SetDataSource;
72	end;
73
74
75	implementation
76
77
78	{* TStDbBarCode *}
79
80	constructor TStDbBarCode.Create(AOwner : TComponent);
81	begin
82	inherited Create(AOwner);
83
84	FDataLink := TFieldDataLink.Create;
85	FDataLink.OnDataChange := DataChange;
86	end;
87
88	procedure TStDbBarCode.DataChange(Sender : TObject);
89	begin
90	if FDataLink.Field = nil then
91	Code := '12345678922'
92	else
93	Code := FDataLink.Field.DisplayText;
94	end;
95
96	destructor TStDbBarCode.Destroy;
97	begin
98	FDataLink.OnDataChange := nil;
99	FDataLink.Free;
100	FDataLink := nil;
101
102	inherited Destroy;
103	end;
104
105	function TStDbBarCode.GetDataField : string;
106	begin
107	Result := FDataLink.FieldName;
108	end;
109
110	function TStDbBarCode.GetDataSource : TDataSource;
111	begin
112	Result := FDataLink.DataSource
113	end;
114
115	procedure TStDbBarCode.SetDataField(const Value : string);
116	begin
117	FDataLink.FieldName := Value;
118	end;
119
120	procedure TStDbBarCode.SetDataSource(Value : TDataSource);
121	begin
122	FDataLink.DataSource := Value;
123	end;
124
125
126	end.