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
Original Path:	*ibx/trunk/examples/employee/unit1.pas*
File size:	11983 byte(s)
Log Message:	Fixes Merged
#	User	Rev	Content
1	tony	143	(*
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	tony	33	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	tony	66	EmployeesTEst: TStringField;
48	tony	33	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