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;

const
  sNoName = '<no name>';

function ExtractDBException(msg: string): string;
var Lines: TStringList;
begin
     Lines := TStringList.Create;
     try
       Lines.Text := msg;
       if pos('exception',Lines[0]) = 1 then
         Result := Lines[2]
       else
         Result := msg
     finally
       Lines.Free
     end;
end;

{ 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.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
  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(ExtractDBException(EIBError(E).message),mtError,[mbOK],0);
       DataSet.Cancel;
       DataAction  := daAbort
   end;
end;

end.

Revision:	143
Committed:	Fri Feb 23 12:11:21 2018 UTC (6 years, 2 months ago) by tony
Content type:	text/x-pascal
File size:	11983 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	{$R *.lfm}
173
174	uses IB, Unit2;
175
176	const
177	sNoName = '<no name>';
178
179	function ExtractDBException(msg: string): string;
180	var Lines: TStringList;
181	begin
182	Lines := TStringList.Create;
183	try
184	Lines.Text := msg;
185	if pos('exception',Lines[0]) = 1 then
186	Result := Lines[2]
187	else
188	Result := msg
189	finally
190	Lines.Free
191	end;
192	end;
193
194	{ TForm1 }
195
196	procedure TForm1.EmployeesSALARYGetText(Sender: TField; var aText: string;
197	DisplayText: Boolean);
198	begin
199	if DisplayText then
200	begin
201	if Sender.IsNUll then
202	aText := ''
203	else
204	aText := FormatFloat('$#,##0.00',Sender.AsFloat)
205	end
206	else
207	aText := Sender.AsString
208	end;
209
210	procedure TForm1.JobCodesBeforeOpen(DataSet: TDataSet);
211	begin
212	JobCodes.ParamByName('JOB_GRADE').AsInteger := EmployeesJOB_GRADE.AsInteger;
213	JobCodes.ParamByName('JOB_COUNTRY').AsString := EmployeesJOB_COUNTRY.AsString
214	end;
215
216	procedure TForm1.SaveChangesExecute(Sender: TObject);
217	begin
218	Employees.Transaction.Commit
219	end;
220
221	procedure TForm1.SaveChangesUpdate(Sender: TObject);
222	begin
223	(Sender as TAction).Enabled := FDirty
224	end;
225
226	procedure TForm1.Reopen(Data: PtrInt);
227	begin
228	with IBTransaction1 do
229	if not InTransaction then StartTransaction;
230	Countries.Active := true;
231	Employees.Active := true;
232	JobCodes.Active := true;
233	Depts.Active := true;
234	end;
235
236	procedure TForm1.AddEmployeeExecute(Sender: TObject);
237	begin
238	Employees.Append
239	end;
240
241	procedure TForm1.SelectDeptExecute(Sender: TObject);
242	var Dept_No: string;
243	begin
244	if SelectDeptDlg.ShowModal(EmployeesDEPT_KEY_PATH.AsString,Dept_No) = mrOK then
245	begin
246	Employees.Edit;
247	EmployeesDEPT_NO.AsString := Dept_No;
248	try
249	Employees.Post;
250	except
251	Employees.Cancel;
252	raise;
253	end;
254	IBDynamicGrid1.ShowEditorPanel;
255	end;
256	end;
257
258	procedure TForm1.EmployeesValidatePost(Sender: TObject; var CancelPost: boolean
259	);
260	begin
261	{Cancel if no name entered}
262	CancelPost := (EmployeesLAST_NAME.AsString = sNoName) and (EmployeesFIRST_NAME.AsString = sNoName);
263	end;
264
265	procedure TForm1.JobCodeChangeTimerTimer(Sender: TObject);
266	begin
267	Countries.Active := false;
268	Countries.Active := true;
269	JobCodeChangeTimer.Interval := 0;
270	end;
271
272	procedure TForm1.JobGradeChangeTimerTimer(Sender: TObject);
273	begin
274	Countries.Active := false;
275	JobCodes.Active := false;
276	Countries.Active := true;
277	JobCodes.Active := true;
278	JobGradeChangeTimer.Interval := 0;
279	end;
280
281	procedure TForm1.JobGradeDBComboBoxCloseUp(Sender: TObject);
282	begin
283	JobGradeDBComboBox.EditingDone; //See http://bugs.freepascal.org/view.php?id=27186
284	end;
285
286	procedure TForm1.BeforeDateChange(Sender: TObject);
287	begin
288	Employees.Active := false;
289	Employees.Active := true
290	end;
291
292	procedure TForm1.CancelChangesExecute(Sender: TObject);
293	begin
294	Employees.Transaction.Rollback
295	end;
296
297	procedure TForm1.CountriesBeforeOpen(DataSet: TDataSet);
298	begin
299	Countries.ParamByName('JOB_GRADE').AsInteger := EmployeesJOB_GRADE.AsInteger;
300	Countries.ParamByName('JOB_CODE').AsString := EmployeesJOB_CODE.AsString
301	end;
302
303	procedure TForm1.DeleteEmployeeExecute(Sender: TObject);
304	begin
305	if MessageDlg(
306	Format('Remove %s from Employee List?',[Employees.FieldByName('Full_Name').AsString]),
307	mtConfirmation,[mbYes,mbNo],0) = mrYes then
308	Employees.Delete
309	end;
310
311	procedure TForm1.EditEmployeeExecute(Sender: TObject);
312	begin
313	IBDynamicGrid1.ShowEditorPanel;
314	end;
315
316	procedure TForm1.EditEmployeeUpdate(Sender: TObject);
317	begin
318	(Sender as TAction).Enabled := Employees.Active and (Employees.RecordCount > 0)
319	end;
320
321	procedure TForm1.EmployeesAfterInsert(DataSet: TDataSet);
322	begin
323	EmployeesJOB_COUNTRY.AsString := 'USA';
324	EmployeesJOB_CODE.AsString := 'SRep';
325	EmployeesJOB_GRADE.AsInteger := 4;
326	EmployeesSALARY.AsCurrency := 20000;
327	EmployeesFIRST_NAME.AsString := sNoName;
328	EmployeesLAST_NAME.AsString := sNoName;
329	EmployeesHIRE_DATE.AsDateTime := now;
330	EmployeesDEPT_NO.AsString := '000';
331	FDirty := true;
332	end;
333
334	procedure TForm1.EmployeesAfterOpen(DataSet: TDataSet);
335	begin
336	TotalsQuery.Active := true;
337	IBDynamicGrid1.SetFocus;
338	end;
339
340	procedure TForm1.EmployeesAfterScroll(DataSet: TDataSet);
341	begin
342	JobGradeChangeTimer.Interval := 200;
343	end;
344
345	procedure TForm1.EmployeesBeforeClose(DataSet: TDataSet);
346	begin
347	TotalsQuery.Active := false
348	end;
349
350	procedure TForm1.EmployeesBeforeOpen(DataSet: TDataSet);
351	begin
352	if BeforeDate.Date > 0 then
353	(DataSet as TIBParserDataSet).Parser.Add2WhereClause('HIRE_DATE < :BeforeDate');
354	if AfterDate.Date > 0 then
355	(DataSet as TIBParserDataSet).Parser.Add2WhereClause('HIRE_DATE > :AfterDate');
356
357	case SalaryRange.ItemIndex of
358	1:
359	(DataSet as TIBParserDataSet).Parser.Add2WhereClause('Salary < 40000');
360	2:
361	(DataSet as TIBParserDataSet).Parser.Add2WhereClause('Salary >= 40000 and Salary < 100000');
362	3:
363	(DataSet as TIBParserDataSet).Parser.Add2WhereClause('Salary >= 100000');
364	end;
365
366
367
368	{Parameter value must be set after all SQL changes have been made}
369	if BeforeDate.Date > 0 then
370	(DataSet as TIBParserDataSet).ParamByName('BeforeDate').AsDateTime := BeforeDate.Date;
371	if AfterDate.Date > 0 then
372	(DataSet as TIBParserDataSet).ParamByName('AfterDate').AsDateTime := AfterDate.Date;
373
374	end;
375
376	procedure TForm1.EmployeesJOB_CODEChange(Sender: TField);
377	begin
378	JobCodeChangeTimer.Interval := 200;
379	end;
380
381	procedure TForm1.EmployeesJOB_GRADEChange(Sender: TField);
382	begin
383	JobGradeChangeTimer.Interval := 200;
384	end;
385
386	procedure TForm1.FormClose(Sender: TObject; var CloseAction: TCloseAction);
387	begin
388	FClosing := true;
389	if IBTransaction1.InTransaction then
390	IBTransaction1.Commit;
391	end;
392
393	procedure TForm1.FormShow(Sender: TObject);
394	begin
395	repeat
396	try
397	IBDatabase1.Connected := true;
398	except
399	on E:EIBClientError do
400	begin
401	Close;
402	Exit
403	end;
404	On E:Exception do
405	MessageDlg(E.Message,mtError,[mbOK],0);
406	end;
407	until IBDatabase1.Connected;
408	Reopen(0);
409	end;
410
411	procedure TForm1.EmployeesAfterDelete(DataSet: TDataSet);
412	begin
413	FDirty := true
414	end;
415
416	procedure TForm1.EmployeesAfterTransactionEnd(Sender: TObject);
417	begin
418	FDirty := false;
419	if not FClosing then
420	Application.QueueAsyncCall(@Reopen,0)
421	end;
422
423	procedure TForm1.EmployeesPostError(DataSet: TDataSet; E: EDatabaseError;
424	var DataAction: TDataAction);
425	begin
426	if E is EIBError then
427	begin
428	MessageDlg(ExtractDBException(EIBError(E).message),mtError,[mbOK],0);
429	DataSet.Cancel;
430	DataAction := daAbort
431	end;
432	end;
433
434	end.
435