examples/employee/unit1.pas

(*
 *  IBX For Lazarus (Firebird Express)
 *
 *  The contents of this file are subject to the Initial Developer's
 *  Public License Version 1.0 (the "License"); you may not use this
 *  file except in compliance with the License. You may obtain a copy
 *  of the License here:
 *
 *    http://www.firebirdsql.org/index.php?op=doc&id=idpl
 *
 *  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 Initial Developer of the Original Code is Tony Whyman.
 *
 *  The Original Code is (C) 2015 Tony Whyman, MWA Software
 *  (http://www.mwasoftware.co.uk).
 *
 *  All Rights Reserved.
 *
 *  Contributor(s): ______________________________________.
 *
*) 
            
unit Unit1; 

{$mode objfpc}{$H+}

interface

uses
  Classes, SysUtils, FileUtil, Forms, Controls, Graphics, Dialogs, DBGrids,
  StdCtrls, ActnList, EditBtn, DbCtrls, ExtCtrls, Buttons, IBDatabase, IBQuery,
  IBCustomDataSet, IBUpdateSQL, IBDynamicGrid, IBLookupComboEditBox,
  db, DBExtCtrls;

type

  { TForm1 }

  TForm1 = class(TForm)
    DBEdit6: TDBEdit;
    EmployeesDEPT_KEY_PATH: TIBStringField;
    EmployeesDEPT_PATH: TIBStringField;
    EmployeesTEst: TStringField;
    IBLookupComboEditBox1: TIBLookupComboEditBox;
    IBLookupComboEditBox2: TIBLookupComboEditBox;
    IBQuery1DEPT_NO: TIBStringField;
    IBQuery1EMP_NO: TSmallintField;
    IBQuery1FIRST_NAME: TIBStringField;
    IBQuery1FULL_NAME: TIBStringField;
    IBQuery1HIRE_DATE: TDateTimeField;
    IBQuery1JOB_CODE: TIBStringField;
    IBQuery1JOB_COUNTRY: TIBStringField;
    IBQuery1JOB_GRADE: TSmallintField;
    IBQuery1LAST_NAME: TIBStringField;
    IBQuery1PHONE_EXT: TIBStringField;
    IBQuery1SALARY: TIBBCDField;
    SelectDept: TAction;
    Button4: TButton;
    Button5: TButton;
    CancelChanges: TAction;
    SalaryRange: TComboBox;
    CountrySource: TDataSource;
    BeforeDate: TDateEdit;
    AfterDate: TDateEdit;
    DeptsSource: TDataSource;
    Depts: TIBQuery;
    JobCodeSource: TDataSource;
    DBEdit1: TDBEdit;
    DBEdit2: TDBEdit;
    DBEdit3: TDBEdit;
    DBEdit4: TDBEdit;
    DBEdit5: TDBEdit;
    DBText1: TDBText;
    Employees: TIBDataSet;
    EmployeesDEPT_NO: TIBStringField;
    EmployeesEMP_NO: TSmallintField;
    EmployeesFIRST_NAME: TIBStringField;
    EmployeesFULL_NAME: TIBStringField;
    EmployeesHIRE_DATE: TDateTimeField;
    EmployeesJOB_CODE: TIBStringField;
    EmployeesJOB_COUNTRY: TIBStringField;
    EmployeesJOB_GRADE: TSmallintField;
    EmployeesLAST_NAME: TIBStringField;
    EmployeesPHONE_EXT: TIBStringField;
    EmployeesSALARY: TIBBCDField;
    IBDateEdit1: TDBDateEdit;
    IBDynamicGrid1: TIBDynamicGrid;
    Countries: TIBQuery;
    JobCodes: TIBQuery;
    JobGradeDBComboBox: TDBComboBox;
    Label10: TLabel;
    Label11: TLabel;
    Label12: TLabel;
    Label13: TLabel;
    Label3: TLabel;
    Label4: TLabel;
    Label5: TLabel;
    Label6: TLabel;
    Label7: TLabel;
    Label8: TLabel;
    Label9: TLabel;
    Panel1: TPanel;
    Panel2: TPanel;
    EmployeeEditorPanel: TPanel;
    SpeedButton1: TSpeedButton;
    JobGradeChangeTimer: TTimer;
    JobCodeChangeTimer: TTimer;
    TotalsQueryTOTALSALARIES: TIBBCDField;
    TotalsSource: TDataSource;
    TotalsQuery: TIBQuery;
    Label1: TLabel;
    Label2: TLabel;
    SaveChanges: TAction;
    DeleteEmployee: TAction;
    EditEmployee: TAction;
    AddEmployee: TAction;
    ActionList1: TActionList;
    Button1: TButton;
    Button2: TButton;
    Button3: TButton;
    EmployeeSource: TDataSource;
    IBDatabase1: TIBDatabase;
    IBTransaction1: TIBTransaction;
    procedure EmployeesValidatePost(Sender: TObject; var CancelPost: boolean);
    procedure JobCodeChangeTimerTimer(Sender: TObject);
    procedure JobGradeChangeTimerTimer(Sender: TObject);
    procedure JobGradeDBComboBoxCloseUp(Sender: TObject);
    procedure SelectDeptExecute(Sender: TObject);
    procedure AddEmployeeExecute(Sender: TObject);
    procedure BeforeDateChange(Sender: TObject);
    procedure CancelChangesExecute(Sender: TObject);
    procedure CountriesBeforeOpen(DataSet: TDataSet);
    procedure DeleteEmployeeExecute(Sender: TObject);
    procedure EditEmployeeExecute(Sender: TObject);
    procedure EditEmployeeUpdate(Sender: TObject);
    procedure EmployeesAfterInsert(DataSet: TDataSet);
    procedure EmployeesAfterOpen(DataSet: TDataSet);
    procedure EmployeesAfterScroll(DataSet: TDataSet);
    procedure EmployeesBeforeClose(DataSet: TDataSet);
    procedure EmployeesBeforeOpen(DataSet: TDataSet);
    procedure EmployeesJOB_CODEChange(Sender: TField);
    procedure EmployeesJOB_GRADEChange(Sender: TField);
    procedure FormClose(Sender: TObject; var CloseAction: TCloseAction);
    procedure FormShow(Sender: TObject);
    procedure EmployeesAfterDelete(DataSet: TDataSet);
    procedure EmployeesAfterTransactionEnd(Sender: TObject);
    procedure EmployeesPostError(DataSet: TDataSet; E: EDatabaseError;
      var DataAction: TDataAction);
    procedure EmployeesSALARYGetText(Sender: TField; var aText: string;
      DisplayText: Boolean);
    procedure JobCodesBeforeOpen(DataSet: TDataSet);
    procedure SaveChangesExecute(Sender: TObject);
    procedure SaveChangesUpdate(Sender: TObject);
  private
    { private declarations }
    FDirty: boolean;
    FClosing: boolean;
    procedure Reopen(Data: PtrInt);
  public
    { public declarations }
  end; 

var
  Form1: TForm1; 

implementation

{$R *.lfm}

uses IB, Unit2, FBMessages;

const
  sNoName = '<no name>';

{ TForm1 }

procedure TForm1.EmployeesSALARYGetText(Sender: TField; var aText: string;
  DisplayText: Boolean);
begin
  if DisplayText then
  begin
    if Sender.IsNUll then
      aText := ''
    else
      aText := FormatFloat('$#,##0.00',Sender.AsFloat)
  end
  else
    aText := Sender.AsString
end;

procedure TForm1.JobCodesBeforeOpen(DataSet: TDataSet);
begin
  JobCodes.ParamByName('JOB_GRADE').AsInteger := EmployeesJOB_GRADE.AsInteger;
  JobCodes.ParamByName('JOB_COUNTRY').AsString := EmployeesJOB_COUNTRY.AsString
end;

procedure TForm1.SaveChangesExecute(Sender: TObject);
begin
  Employees.Transaction.Commit
end;

procedure TForm1.SaveChangesUpdate(Sender: TObject);
begin
  (Sender as TAction).Enabled := FDirty
end;

procedure TForm1.Reopen(Data: PtrInt);
begin
  with IBTransaction1 do
    if not InTransaction then StartTransaction;
  Countries.Active := true;
  Employees.EnableStatistics := true;
  Employees.Active := true;
  JobCodes.Active := true;
  Depts.Active := true;
end;

procedure TForm1.AddEmployeeExecute(Sender: TObject);
begin
  Employees.Append
end;

procedure TForm1.SelectDeptExecute(Sender: TObject);
var Dept_No: string;
begin
  if SelectDeptDlg.ShowModal(EmployeesDEPT_KEY_PATH.AsString,Dept_No) = mrOK then
  begin
    Employees.Edit;
    EmployeesDEPT_NO.AsString := Dept_No;
    try
      Employees.Post;
    except
      Employees.Cancel;
      raise;
    end;
    IBDynamicGrid1.ShowEditorPanel;
  end;
end;

procedure TForm1.EmployeesValidatePost(Sender: TObject; var CancelPost: boolean
  );
begin
  {Cancel if no name entered}
  CancelPost := (EmployeesLAST_NAME.AsString = sNoName) and  (EmployeesFIRST_NAME.AsString = sNoName);
end;

procedure TForm1.JobCodeChangeTimerTimer(Sender: TObject);
begin
  Countries.Active := false;
  Countries.Active := true;
  JobCodeChangeTimer.Interval := 0;
end;

procedure TForm1.JobGradeChangeTimerTimer(Sender: TObject);
begin
  Countries.Active := false;
  JobCodes.Active := false;
  Countries.Active := true;
  JobCodes.Active := true;
  JobGradeChangeTimer.Interval := 0;
end;

procedure TForm1.JobGradeDBComboBoxCloseUp(Sender: TObject);
begin
  JobGradeDBComboBox.EditingDone; //See http://bugs.freepascal.org/view.php?id=27186
end;

procedure TForm1.BeforeDateChange(Sender: TObject);
begin
  Employees.Active := false;
  Employees.Active := true
end;

procedure TForm1.CancelChangesExecute(Sender: TObject);
begin
  Employees.Transaction.Rollback
end;

procedure TForm1.CountriesBeforeOpen(DataSet: TDataSet);
begin
  Countries.ParamByName('JOB_GRADE').AsInteger := EmployeesJOB_GRADE.AsInteger;
  Countries.ParamByName('JOB_CODE').AsString := EmployeesJOB_CODE.AsString
end;

procedure TForm1.DeleteEmployeeExecute(Sender: TObject);
begin
  if MessageDlg(
    Format('Remove %s from Employee List?',[Employees.FieldByName('Full_Name').AsString]),
    mtConfirmation,[mbYes,mbNo],0) = mrYes then
    Employees.Delete
end;

procedure TForm1.EditEmployeeExecute(Sender: TObject);
begin
  IBDynamicGrid1.ShowEditorPanel;
end;

procedure TForm1.EditEmployeeUpdate(Sender: TObject);
begin
  (Sender as TAction).Enabled := Employees.Active and (Employees.RecordCount > 0)
end;

procedure TForm1.EmployeesAfterInsert(DataSet: TDataSet);
begin
  EmployeesJOB_COUNTRY.AsString := 'USA';
  EmployeesJOB_CODE.AsString := 'SRep';
  EmployeesJOB_GRADE.AsInteger := 4;
  EmployeesSALARY.AsCurrency := 20000;
  EmployeesFIRST_NAME.AsString := sNoName;
  EmployeesLAST_NAME.AsString := sNoName;
  EmployeesHIRE_DATE.AsDateTime := now;
  EmployeesDEPT_NO.AsString := '000';
  FDirty := true;
end;

procedure TForm1.EmployeesAfterOpen(DataSet: TDataSet);
begin
  TotalsQuery.Active := true;
  IBDynamicGrid1.SetFocus;
end;

procedure TForm1.EmployeesAfterScroll(DataSet: TDataSet);
begin
  JobGradeChangeTimer.Interval := 200;
end;

procedure TForm1.EmployeesBeforeClose(DataSet: TDataSet);
begin
  TotalsQuery.Active := false
end;

procedure TForm1.EmployeesBeforeOpen(DataSet: TDataSet);
begin
  if BeforeDate.Date > 0 then
     (DataSet as TIBParserDataSet).Parser.Add2WhereClause('HIRE_DATE < :BeforeDate');
  if AfterDate.Date > 0 then
     (DataSet as TIBParserDataSet).Parser.Add2WhereClause('HIRE_DATE > :AfterDate');


  case SalaryRange.ItemIndex of
  1:
    (DataSet as TIBParserDataSet).Parser.Add2WhereClause('Salary < 40000');
  2:
    (DataSet as TIBParserDataSet).Parser.Add2WhereClause('Salary >= 40000 and Salary < 100000');
  3:
    (DataSet as TIBParserDataSet).Parser.Add2WhereClause('Salary >= 100000');
  end;


  {Parameter value must be set after all SQL changes have been made}
  if BeforeDate.Date > 0 then
     (DataSet as TIBParserDataSet).ParamByName('BeforeDate').AsDateTime := BeforeDate.Date;
  if AfterDate.Date > 0 then
   (DataSet as TIBParserDataSet).ParamByName('AfterDate').AsDateTime := AfterDate.Date;

end;

procedure TForm1.EmployeesJOB_CODEChange(Sender: TField);
begin
  JobCodeChangeTimer.Interval := 200;
end;

procedure TForm1.EmployeesJOB_GRADEChange(Sender: TField);
begin
  JobGradeChangeTimer.Interval := 200;
end;

procedure TForm1.FormClose(Sender: TObject; var CloseAction: TCloseAction);
begin
  FClosing := true;
  if IBTransaction1.InTransaction then
    IBTransaction1.Commit;
end;

procedure TForm1.FormShow(Sender: TObject);
begin
  {Set IB Exceptions to only show text message - omit SQLCode and Engine Code}
  FirebirdAPI.GetStatus.SetIBDataBaseErrorMessages([ShowIBMessage]);
  Application.ExceptionDialog := aedOkMessageBox;
  repeat
    try
      IBDatabase1.Connected := true;
    except
     on E:EIBClientError do
      begin
        Close;
        Exit
      end;
    On E:Exception do
     MessageDlg(E.Message,mtError,[mbOK],0);
    end;
  until IBDatabase1.Connected;
  Reopen(0);
end;

procedure TForm1.EmployeesAfterDelete(DataSet: TDataSet);
begin
  FDirty := true
end;

procedure TForm1.EmployeesAfterTransactionEnd(Sender: TObject);
begin
  FDirty := false;
  if not FClosing then
    Application.QueueAsyncCall(@Reopen,0)
end;

procedure TForm1.EmployeesPostError(DataSet: TDataSet; E: EDatabaseError;
  var DataAction: TDataAction);
begin
  if E is EIBError then
   begin
       MessageDlg(EIBError(E).message,mtError,[mbOK],0);
       DataSet.Cancel;
       DataAction  := daAbort
   end;
end;

end.

Revision:	209
Committed:	Wed Mar 14 12:48:51 2018 UTC (6 years, 1 month ago) by tony
Content type:	text/x-pascal
File size:	11908 byte(s)
Log Message:	Fixes Merged
#	Content
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	{$R *.lfm}
173
174	uses IB, Unit2, FBMessages;
175
176	const
177	sNoName = '<no name>';
178
179	{ TForm1 }
180
181	procedure TForm1.EmployeesSALARYGetText(Sender: TField; var aText: string;
182	DisplayText: Boolean);
183	begin
184	if DisplayText then
185	begin
186	if Sender.IsNUll then
187	aText := ''
188	else
189	aText := FormatFloat('$#,##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	if IBTransaction1.InTransaction then
377	IBTransaction1.Commit;
378	end;
379
380	procedure TForm1.FormShow(Sender: TObject);
381	begin
382	{Set IB Exceptions to only show text message - omit SQLCode and Engine Code}
383	FirebirdAPI.GetStatus.SetIBDataBaseErrorMessages([ShowIBMessage]);
384	Application.ExceptionDialog := aedOkMessageBox;
385	repeat
386	try
387	IBDatabase1.Connected := true;
388	except
389	on E:EIBClientError do
390	begin
391	Close;
392	Exit
393	end;
394	On E:Exception do
395	MessageDlg(E.Message,mtError,[mbOK],0);
396	end;
397	until IBDatabase1.Connected;
398	Reopen(0);
399	end;
400
401	procedure TForm1.EmployeesAfterDelete(DataSet: TDataSet);
402	begin
403	FDirty := true
404	end;
405
406	procedure TForm1.EmployeesAfterTransactionEnd(Sender: TObject);
407	begin
408	FDirty := false;
409	if not FClosing then
410	Application.QueueAsyncCall(@Reopen,0)
411	end;
412
413	procedure TForm1.EmployeesPostError(DataSet: TDataSet; E: EDatabaseError;
414	var DataAction: TDataAction);
415	begin
416	if E is EIBError then
417	begin
418	MessageDlg(EIBError(E).message,mtError,[mbOK],0);
419	DataSet.Cancel;
420	DataAction := daAbort
421	end;
422	end;
423
424	end.
425