1 |
(*
|
2 |
* IBX For Lazarus (Firebird Express)
|
3 |
*
|
4 |
* The contents of this file are subject to the Initial Developer's
|
5 |
* Public License Version 1.0 (the "License"); you may not use this
|
6 |
* file except in compliance with the License. You may obtain a copy
|
7 |
* of the License here:
|
8 |
*
|
9 |
* http://www.firebirdsql.org/index.php?op=doc&id=idpl
|
10 |
*
|
11 |
* Software distributed under the License is distributed on an "AS
|
12 |
* IS" basis, WITHOUT WARRANTY OF ANY KIND, either express or
|
13 |
* implied. See the License for the specific language governing rights
|
14 |
* and limitations under the License.
|
15 |
*
|
16 |
* The Initial Developer of the Original Code is Tony Whyman.
|
17 |
*
|
18 |
* The Original Code is (C) 2015 Tony Whyman, MWA Software
|
19 |
* (http://www.mwasoftware.co.uk).
|
20 |
*
|
21 |
* All Rights Reserved.
|
22 |
*
|
23 |
* Contributor(s): ______________________________________.
|
24 |
*
|
25 |
*)
|
26 |
|
27 |
unit Unit1;
|
28 |
|
29 |
{$mode objfpc}{$H+}
|
30 |
|
31 |
interface
|
32 |
|
33 |
uses
|
34 |
Classes, SysUtils, FileUtil, Forms, Controls, Graphics, Dialogs, DBGrids,
|
35 |
StdCtrls, ActnList, EditBtn, DbCtrls, ExtCtrls, Buttons, IBDatabase, IBQuery,
|
36 |
IBCustomDataSet, IBUpdateSQL, IBDynamicGrid, IBLookupComboEditBox,
|
37 |
db, DBExtCtrls;
|
38 |
|
39 |
type
|
40 |
|
41 |
{ TForm1 }
|
42 |
|
43 |
TForm1 = class(TForm)
|
44 |
DBEdit6: TDBEdit;
|
45 |
EmployeesDEPT_KEY_PATH: TIBStringField;
|
46 |
EmployeesDEPT_PATH: TIBStringField;
|
47 |
EmployeesTEst: TStringField;
|
48 |
IBLookupComboEditBox1: TIBLookupComboEditBox;
|
49 |
IBLookupComboEditBox2: TIBLookupComboEditBox;
|
50 |
IBQuery1DEPT_NO: TIBStringField;
|
51 |
IBQuery1EMP_NO: TSmallintField;
|
52 |
IBQuery1FIRST_NAME: TIBStringField;
|
53 |
IBQuery1FULL_NAME: TIBStringField;
|
54 |
IBQuery1HIRE_DATE: TDateTimeField;
|
55 |
IBQuery1JOB_CODE: TIBStringField;
|
56 |
IBQuery1JOB_COUNTRY: TIBStringField;
|
57 |
IBQuery1JOB_GRADE: TSmallintField;
|
58 |
IBQuery1LAST_NAME: TIBStringField;
|
59 |
IBQuery1PHONE_EXT: TIBStringField;
|
60 |
IBQuery1SALARY: TIBBCDField;
|
61 |
SelectDept: TAction;
|
62 |
Button4: TButton;
|
63 |
Button5: TButton;
|
64 |
CancelChanges: TAction;
|
65 |
SalaryRange: TComboBox;
|
66 |
CountrySource: TDataSource;
|
67 |
BeforeDate: TDateEdit;
|
68 |
AfterDate: TDateEdit;
|
69 |
DeptsSource: TDataSource;
|
70 |
Depts: TIBQuery;
|
71 |
JobCodeSource: TDataSource;
|
72 |
DBEdit1: TDBEdit;
|
73 |
DBEdit2: TDBEdit;
|
74 |
DBEdit3: TDBEdit;
|
75 |
DBEdit4: TDBEdit;
|
76 |
DBEdit5: TDBEdit;
|
77 |
DBText1: TDBText;
|
78 |
Employees: TIBDataSet;
|
79 |
EmployeesDEPT_NO: TIBStringField;
|
80 |
EmployeesEMP_NO: TSmallintField;
|
81 |
EmployeesFIRST_NAME: TIBStringField;
|
82 |
EmployeesFULL_NAME: TIBStringField;
|
83 |
EmployeesHIRE_DATE: TDateTimeField;
|
84 |
EmployeesJOB_CODE: TIBStringField;
|
85 |
EmployeesJOB_COUNTRY: TIBStringField;
|
86 |
EmployeesJOB_GRADE: TSmallintField;
|
87 |
EmployeesLAST_NAME: TIBStringField;
|
88 |
EmployeesPHONE_EXT: TIBStringField;
|
89 |
EmployeesSALARY: TIBBCDField;
|
90 |
IBDateEdit1: TDBDateEdit;
|
91 |
IBDynamicGrid1: TIBDynamicGrid;
|
92 |
Countries: TIBQuery;
|
93 |
JobCodes: TIBQuery;
|
94 |
JobGradeDBComboBox: TDBComboBox;
|
95 |
Label10: TLabel;
|
96 |
Label11: TLabel;
|
97 |
Label12: TLabel;
|
98 |
Label13: TLabel;
|
99 |
Label3: TLabel;
|
100 |
Label4: TLabel;
|
101 |
Label5: TLabel;
|
102 |
Label6: TLabel;
|
103 |
Label7: TLabel;
|
104 |
Label8: TLabel;
|
105 |
Label9: TLabel;
|
106 |
Panel1: TPanel;
|
107 |
Panel2: TPanel;
|
108 |
EmployeeEditorPanel: TPanel;
|
109 |
SpeedButton1: TSpeedButton;
|
110 |
JobGradeChangeTimer: TTimer;
|
111 |
JobCodeChangeTimer: TTimer;
|
112 |
TotalsQueryTOTALSALARIES: TIBBCDField;
|
113 |
TotalsSource: TDataSource;
|
114 |
TotalsQuery: TIBQuery;
|
115 |
Label1: TLabel;
|
116 |
Label2: TLabel;
|
117 |
SaveChanges: TAction;
|
118 |
DeleteEmployee: TAction;
|
119 |
EditEmployee: TAction;
|
120 |
AddEmployee: TAction;
|
121 |
ActionList1: TActionList;
|
122 |
Button1: TButton;
|
123 |
Button2: TButton;
|
124 |
Button3: TButton;
|
125 |
EmployeeSource: TDataSource;
|
126 |
IBDatabase1: TIBDatabase;
|
127 |
IBTransaction1: TIBTransaction;
|
128 |
procedure EmployeesValidatePost(Sender: TObject; var CancelPost: boolean);
|
129 |
procedure JobCodeChangeTimerTimer(Sender: TObject);
|
130 |
procedure JobGradeChangeTimerTimer(Sender: TObject);
|
131 |
procedure JobGradeDBComboBoxCloseUp(Sender: TObject);
|
132 |
procedure SelectDeptExecute(Sender: TObject);
|
133 |
procedure AddEmployeeExecute(Sender: TObject);
|
134 |
procedure BeforeDateChange(Sender: TObject);
|
135 |
procedure CancelChangesExecute(Sender: TObject);
|
136 |
procedure CountriesBeforeOpen(DataSet: TDataSet);
|
137 |
procedure DeleteEmployeeExecute(Sender: TObject);
|
138 |
procedure EditEmployeeExecute(Sender: TObject);
|
139 |
procedure EditEmployeeUpdate(Sender: TObject);
|
140 |
procedure EmployeesAfterInsert(DataSet: TDataSet);
|
141 |
procedure EmployeesAfterOpen(DataSet: TDataSet);
|
142 |
procedure EmployeesAfterScroll(DataSet: TDataSet);
|
143 |
procedure EmployeesBeforeClose(DataSet: TDataSet);
|
144 |
procedure EmployeesBeforeOpen(DataSet: TDataSet);
|
145 |
procedure EmployeesJOB_CODEChange(Sender: TField);
|
146 |
procedure EmployeesJOB_GRADEChange(Sender: TField);
|
147 |
procedure FormClose(Sender: TObject; var CloseAction: TCloseAction);
|
148 |
procedure FormShow(Sender: TObject);
|
149 |
procedure EmployeesAfterDelete(DataSet: TDataSet);
|
150 |
procedure EmployeesAfterTransactionEnd(Sender: TObject);
|
151 |
procedure EmployeesPostError(DataSet: TDataSet; E: EDatabaseError;
|
152 |
var DataAction: TDataAction);
|
153 |
procedure EmployeesSALARYGetText(Sender: TField; var aText: string;
|
154 |
DisplayText: Boolean);
|
155 |
procedure JobCodesBeforeOpen(DataSet: TDataSet);
|
156 |
procedure SaveChangesExecute(Sender: TObject);
|
157 |
procedure SaveChangesUpdate(Sender: TObject);
|
158 |
private
|
159 |
{ private declarations }
|
160 |
FDirty: boolean;
|
161 |
FClosing: boolean;
|
162 |
procedure Reopen(Data: PtrInt);
|
163 |
public
|
164 |
{ public declarations }
|
165 |
end;
|
166 |
|
167 |
var
|
168 |
Form1: TForm1;
|
169 |
|
170 |
implementation
|
171 |
|
172 |
{$R *.lfm}
|
173 |
|
174 |
uses IB, Unit2, IBMessages;
|
175 |
|
176 |
const
|
177 |
sNoName = '<no name>';
|
178 |
|
179 |
{ TForm1 }
|
180 |
|
181 |
procedure TForm1.EmployeesSALARYGetText(Sender: TField; var aText: string;
|
182 |
DisplayText: Boolean);
|
183 |
begin
|
184 |
if DisplayText then
|
185 |
begin
|
186 |
if Sender.IsNUll then
|
187 |
aText := ''
|
188 |
else
|
189 |
aText := FormatFloat('$#,##0.00',Sender.AsFloat)
|
190 |
end
|
191 |
else
|
192 |
aText := Sender.AsString
|
193 |
end;
|
194 |
|
195 |
procedure TForm1.JobCodesBeforeOpen(DataSet: TDataSet);
|
196 |
begin
|
197 |
JobCodes.ParamByName('JOB_GRADE').AsInteger := EmployeesJOB_GRADE.AsInteger;
|
198 |
JobCodes.ParamByName('JOB_COUNTRY').AsString := EmployeesJOB_COUNTRY.AsString
|
199 |
end;
|
200 |
|
201 |
procedure TForm1.SaveChangesExecute(Sender: TObject);
|
202 |
begin
|
203 |
Employees.Transaction.Commit
|
204 |
end;
|
205 |
|
206 |
procedure TForm1.SaveChangesUpdate(Sender: TObject);
|
207 |
begin
|
208 |
(Sender as TAction).Enabled := FDirty
|
209 |
end;
|
210 |
|
211 |
procedure TForm1.Reopen(Data: PtrInt);
|
212 |
begin
|
213 |
with IBTransaction1 do
|
214 |
if not InTransaction then StartTransaction;
|
215 |
Countries.Active := true;
|
216 |
Employees.EnableStatistics := true;
|
217 |
Employees.Active := true;
|
218 |
JobCodes.Active := true;
|
219 |
Depts.Active := true;
|
220 |
end;
|
221 |
|
222 |
procedure TForm1.AddEmployeeExecute(Sender: TObject);
|
223 |
begin
|
224 |
Employees.Append
|
225 |
end;
|
226 |
|
227 |
procedure TForm1.SelectDeptExecute(Sender: TObject);
|
228 |
var Dept_No: string;
|
229 |
begin
|
230 |
if SelectDeptDlg.ShowModal(EmployeesDEPT_KEY_PATH.AsString,Dept_No) = mrOK then
|
231 |
begin
|
232 |
Employees.Edit;
|
233 |
EmployeesDEPT_NO.AsString := Dept_No;
|
234 |
try
|
235 |
Employees.Post;
|
236 |
except
|
237 |
Employees.Cancel;
|
238 |
raise;
|
239 |
end;
|
240 |
IBDynamicGrid1.ShowEditorPanel;
|
241 |
end;
|
242 |
end;
|
243 |
|
244 |
procedure TForm1.EmployeesValidatePost(Sender: TObject; var CancelPost: boolean
|
245 |
);
|
246 |
begin
|
247 |
{Cancel if no name entered}
|
248 |
CancelPost := (EmployeesLAST_NAME.AsString = sNoName) and (EmployeesFIRST_NAME.AsString = sNoName);
|
249 |
end;
|
250 |
|
251 |
procedure TForm1.JobCodeChangeTimerTimer(Sender: TObject);
|
252 |
begin
|
253 |
Countries.Active := false;
|
254 |
Countries.Active := true;
|
255 |
JobCodeChangeTimer.Interval := 0;
|
256 |
end;
|
257 |
|
258 |
procedure TForm1.JobGradeChangeTimerTimer(Sender: TObject);
|
259 |
begin
|
260 |
Countries.Active := false;
|
261 |
JobCodes.Active := false;
|
262 |
Countries.Active := true;
|
263 |
JobCodes.Active := true;
|
264 |
JobGradeChangeTimer.Interval := 0;
|
265 |
end;
|
266 |
|
267 |
procedure TForm1.JobGradeDBComboBoxCloseUp(Sender: TObject);
|
268 |
begin
|
269 |
JobGradeDBComboBox.EditingDone; //See http://bugs.freepascal.org/view.php?id=27186
|
270 |
end;
|
271 |
|
272 |
procedure TForm1.BeforeDateChange(Sender: TObject);
|
273 |
begin
|
274 |
Employees.Active := false;
|
275 |
Employees.Active := true
|
276 |
end;
|
277 |
|
278 |
procedure TForm1.CancelChangesExecute(Sender: TObject);
|
279 |
begin
|
280 |
Employees.Transaction.Rollback
|
281 |
end;
|
282 |
|
283 |
procedure TForm1.CountriesBeforeOpen(DataSet: TDataSet);
|
284 |
begin
|
285 |
Countries.ParamByName('JOB_GRADE').AsInteger := EmployeesJOB_GRADE.AsInteger;
|
286 |
Countries.ParamByName('JOB_CODE').AsString := EmployeesJOB_CODE.AsString
|
287 |
end;
|
288 |
|
289 |
procedure TForm1.DeleteEmployeeExecute(Sender: TObject);
|
290 |
begin
|
291 |
if MessageDlg(
|
292 |
Format('Remove %s from Employee List?',[Employees.FieldByName('Full_Name').AsString]),
|
293 |
mtConfirmation,[mbYes,mbNo],0) = mrYes then
|
294 |
Employees.Delete
|
295 |
end;
|
296 |
|
297 |
procedure TForm1.EditEmployeeExecute(Sender: TObject);
|
298 |
begin
|
299 |
IBDynamicGrid1.ShowEditorPanel;
|
300 |
end;
|
301 |
|
302 |
procedure TForm1.EditEmployeeUpdate(Sender: TObject);
|
303 |
begin
|
304 |
(Sender as TAction).Enabled := Employees.Active and (Employees.RecordCount > 0)
|
305 |
end;
|
306 |
|
307 |
procedure TForm1.EmployeesAfterInsert(DataSet: TDataSet);
|
308 |
begin
|
309 |
EmployeesJOB_COUNTRY.AsString := 'USA';
|
310 |
EmployeesJOB_CODE.AsString := 'SRep';
|
311 |
EmployeesJOB_GRADE.AsInteger := 4;
|
312 |
EmployeesSALARY.AsCurrency := 20000;
|
313 |
EmployeesFIRST_NAME.AsString := sNoName;
|
314 |
EmployeesLAST_NAME.AsString := sNoName;
|
315 |
EmployeesHIRE_DATE.AsDateTime := now;
|
316 |
EmployeesDEPT_NO.AsString := '000';
|
317 |
FDirty := true;
|
318 |
end;
|
319 |
|
320 |
procedure TForm1.EmployeesAfterOpen(DataSet: TDataSet);
|
321 |
begin
|
322 |
TotalsQuery.Active := true;
|
323 |
IBDynamicGrid1.SetFocus;
|
324 |
end;
|
325 |
|
326 |
procedure TForm1.EmployeesAfterScroll(DataSet: TDataSet);
|
327 |
begin
|
328 |
JobGradeChangeTimer.Interval := 200;
|
329 |
end;
|
330 |
|
331 |
procedure TForm1.EmployeesBeforeClose(DataSet: TDataSet);
|
332 |
begin
|
333 |
TotalsQuery.Active := false
|
334 |
end;
|
335 |
|
336 |
procedure TForm1.EmployeesBeforeOpen(DataSet: TDataSet);
|
337 |
begin
|
338 |
if BeforeDate.Date > 0 then
|
339 |
(DataSet as TIBParserDataSet).Parser.Add2WhereClause('HIRE_DATE < :BeforeDate');
|
340 |
if AfterDate.Date > 0 then
|
341 |
(DataSet as TIBParserDataSet).Parser.Add2WhereClause('HIRE_DATE > :AfterDate');
|
342 |
|
343 |
|
344 |
case SalaryRange.ItemIndex of
|
345 |
1:
|
346 |
(DataSet as TIBParserDataSet).Parser.Add2WhereClause('Salary < 40000');
|
347 |
2:
|
348 |
(DataSet as TIBParserDataSet).Parser.Add2WhereClause('Salary >= 40000 and Salary < 100000');
|
349 |
3:
|
350 |
(DataSet as TIBParserDataSet).Parser.Add2WhereClause('Salary >= 100000');
|
351 |
end;
|
352 |
|
353 |
|
354 |
|
355 |
{Parameter value must be set after all SQL changes have been made}
|
356 |
if BeforeDate.Date > 0 then
|
357 |
(DataSet as TIBParserDataSet).ParamByName('BeforeDate').AsDateTime := BeforeDate.Date;
|
358 |
if AfterDate.Date > 0 then
|
359 |
(DataSet as TIBParserDataSet).ParamByName('AfterDate').AsDateTime := AfterDate.Date;
|
360 |
|
361 |
end;
|
362 |
|
363 |
procedure TForm1.EmployeesJOB_CODEChange(Sender: TField);
|
364 |
begin
|
365 |
JobCodeChangeTimer.Interval := 200;
|
366 |
end;
|
367 |
|
368 |
procedure TForm1.EmployeesJOB_GRADEChange(Sender: TField);
|
369 |
begin
|
370 |
JobGradeChangeTimer.Interval := 200;
|
371 |
end;
|
372 |
|
373 |
procedure TForm1.FormClose(Sender: TObject; var CloseAction: TCloseAction);
|
374 |
begin
|
375 |
FClosing := true;
|
376 |
try
|
377 |
if IBTransaction1.InTransaction then
|
378 |
IBTransaction1.Commit;
|
379 |
|
380 |
except on E: Exception do
|
381 |
begin
|
382 |
MessageDlg(E.Message,mtError,[mbOK],0);
|
383 |
IBDatabase1.ForceClose;
|
384 |
end;
|
385 |
end;
|
386 |
end;
|
387 |
|
388 |
procedure TForm1.FormShow(Sender: TObject);
|
389 |
begin
|
390 |
{Set IB Exceptions to only show text message - omit SQLCode and Engine Code}
|
391 |
IBDatabase1.FirebirdAPI.GetStatus.SetIBDataBaseErrorMessages([ShowIBMessage]);
|
392 |
Application.ExceptionDialog := aedOkMessageBox;
|
393 |
repeat
|
394 |
try
|
395 |
IBDatabase1.Connected := true;
|
396 |
except
|
397 |
on E:EIBClientError do
|
398 |
begin
|
399 |
Close;
|
400 |
Exit
|
401 |
end;
|
402 |
On E:Exception do
|
403 |
MessageDlg(E.Message,mtError,[mbOK],0);
|
404 |
end;
|
405 |
until IBDatabase1.Connected;
|
406 |
Reopen(0);
|
407 |
end;
|
408 |
|
409 |
procedure TForm1.EmployeesAfterDelete(DataSet: TDataSet);
|
410 |
begin
|
411 |
FDirty := true
|
412 |
end;
|
413 |
|
414 |
procedure TForm1.EmployeesAfterTransactionEnd(Sender: TObject);
|
415 |
begin
|
416 |
FDirty := false;
|
417 |
if not FClosing then
|
418 |
Application.QueueAsyncCall(@Reopen,0)
|
419 |
end;
|
420 |
|
421 |
procedure TForm1.EmployeesPostError(DataSet: TDataSet; E: EDatabaseError;
|
422 |
var DataAction: TDataAction);
|
423 |
begin
|
424 |
if E is EIBError then
|
425 |
begin
|
426 |
MessageDlg(EIBError(E).message,mtError,[mbOK],0);
|
427 |
DataSet.Cancel;
|
428 |
DataAction := daAbort
|
429 |
end;
|
430 |
end;
|
431 |
|
432 |
end.
|
433 |
|