examples/isqlmonitor/MainForm.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 MainForm;

{$mode objfpc}{$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;
    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 EmployeesAfterPost(DataSet: TDataSet);
    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 DeleteEmployeeExecute(Sender: TObject);
    procedure EditEmployeeExecute(Sender: TObject);
    procedure EditEmployeeUpdate(Sender: TObject);
    procedure EmployeesAfterInsert(DataSet: TDataSet);
    procedure EmployeesAfterOpen(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 SaveChangesExecute(Sender: TObject);
    procedure SaveChangesUpdate(Sender: TObject);
  private
    { private declarations }
    FDirty: boolean;
    FClosing: boolean;
    procedure Reopen(Data: PtrInt);
    procedure DoOpenDatabase(Data: PtrInt);
  public
    { public declarations }
  end; 

var
  Form1: TForm1; 

implementation

{$R *.lfm}

uses IB, SelectDeptDlgUnit,MonitorFormUnit;

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.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;
  Depts.Active := true;
  Employees.Active := true;
end;

procedure TForm1.DoOpenDatabase(Data: PtrInt);
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);
  MonitorForm.BringToFront;
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.EmployeesAfterPost(DataSet: TDataSet);
begin
  Employees.Refresh
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.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;
  Countries.Active := true;
  JobCodes.Active := true;
  IBDynamicGrid1.SetFocus;
end;

procedure TForm1.EmployeesBeforeClose(DataSet: TDataSet);
begin
  TotalsQuery.Active := false;
  Countries.Active := false;
  JobCodes.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
  MonitorForm.Visible := true;
  Application.QueueAsyncCall(@DoOpenDatabase,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:	209
Committed:	Wed Mar 14 12:48:51 2018 UTC (6 years, 1 month ago) by tony
Content type:	text/x-pascal
File size:	11668 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	31	unit MainForm;
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			IBLookupComboEditBox1: TIBLookupComboEditBox;
48			IBLookupComboEditBox2: TIBLookupComboEditBox;
49			IBQuery1DEPT_NO: TIBStringField;
50			IBQuery1EMP_NO: TSmallintField;
51			IBQuery1FIRST_NAME: TIBStringField;
52			IBQuery1FULL_NAME: TIBStringField;
53			IBQuery1HIRE_DATE: TDateTimeField;
54			IBQuery1JOB_CODE: TIBStringField;
55			IBQuery1JOB_COUNTRY: TIBStringField;
56			IBQuery1JOB_GRADE: TSmallintField;
57			IBQuery1LAST_NAME: TIBStringField;
58			IBQuery1PHONE_EXT: TIBStringField;
59			IBQuery1SALARY: TIBBCDField;
60			SelectDept: TAction;
61			Button4: TButton;
62			Button5: TButton;
63			CancelChanges: TAction;
64			SalaryRange: TComboBox;
65			CountrySource: TDataSource;
66			BeforeDate: TDateEdit;
67			AfterDate: TDateEdit;
68			DeptsSource: TDataSource;
69			Depts: TIBQuery;
70			JobCodeSource: TDataSource;
71			DBEdit1: TDBEdit;
72			DBEdit2: TDBEdit;
73			DBEdit3: TDBEdit;
74			DBEdit4: TDBEdit;
75			DBEdit5: TDBEdit;
76			DBText1: TDBText;
77			Employees: TIBDataSet;
78			EmployeesDEPT_NO: TIBStringField;
79			EmployeesEMP_NO: TSmallintField;
80			EmployeesFIRST_NAME: TIBStringField;
81			EmployeesFULL_NAME: TIBStringField;
82			EmployeesHIRE_DATE: TDateTimeField;
83			EmployeesJOB_CODE: TIBStringField;
84			EmployeesJOB_COUNTRY: TIBStringField;
85			EmployeesJOB_GRADE: TSmallintField;
86			EmployeesLAST_NAME: TIBStringField;
87			EmployeesPHONE_EXT: TIBStringField;
88			EmployeesSALARY: TIBBCDField;
89			IBDateEdit1: TDBDateEdit;
90			IBDynamicGrid1: TIBDynamicGrid;
91			Countries: TIBQuery;
92			JobCodes: TIBQuery;
93			JobGradeDBComboBox: TDBComboBox;
94			Label10: TLabel;
95			Label11: TLabel;
96			Label12: TLabel;
97			Label13: TLabel;
98			Label3: TLabel;
99			Label4: TLabel;
100			Label5: TLabel;
101			Label6: TLabel;
102			Label7: TLabel;
103			Label8: TLabel;
104			Label9: TLabel;
105			Panel1: TPanel;
106			Panel2: TPanel;
107			EmployeeEditorPanel: TPanel;
108			SpeedButton1: TSpeedButton;
109			JobGradeChangeTimer: TTimer;
110			JobCodeChangeTimer: TTimer;
111			TotalsQueryTOTALSALARIES: TIBBCDField;
112			TotalsSource: TDataSource;
113			TotalsQuery: TIBQuery;
114			Label1: TLabel;
115			Label2: TLabel;
116			SaveChanges: TAction;
117			DeleteEmployee: TAction;
118			EditEmployee: TAction;
119			AddEmployee: TAction;
120			ActionList1: TActionList;
121			Button1: TButton;
122			Button2: TButton;
123			Button3: TButton;
124			EmployeeSource: TDataSource;
125			IBDatabase1: TIBDatabase;
126			IBTransaction1: TIBTransaction;
127			procedure EmployeesAfterPost(DataSet: TDataSet);
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 DeleteEmployeeExecute(Sender: TObject);
137			procedure EditEmployeeExecute(Sender: TObject);
138			procedure EditEmployeeUpdate(Sender: TObject);
139			procedure EmployeesAfterInsert(DataSet: TDataSet);
140			procedure EmployeesAfterOpen(DataSet: TDataSet);
141			procedure EmployeesBeforeClose(DataSet: TDataSet);
142			procedure EmployeesBeforeOpen(DataSet: TDataSet);
143			procedure EmployeesJOB_CODEChange(Sender: TField);
144			procedure EmployeesJOB_GRADEChange(Sender: TField);
145			procedure FormClose(Sender: TObject; var CloseAction: TCloseAction);
146			procedure FormShow(Sender: TObject);
147			procedure EmployeesAfterDelete(DataSet: TDataSet);
148			procedure EmployeesAfterTransactionEnd(Sender: TObject);
149			procedure EmployeesPostError(DataSet: TDataSet; E: EDatabaseError;
150			var DataAction: TDataAction);
151			procedure EmployeesSALARYGetText(Sender: TField; var aText: string;
152			DisplayText: Boolean);
153			procedure SaveChangesExecute(Sender: TObject);
154			procedure SaveChangesUpdate(Sender: TObject);
155			private
156			{ private declarations }
157			FDirty: boolean;
158			FClosing: boolean;
159			procedure Reopen(Data: PtrInt);
160			procedure DoOpenDatabase(Data: PtrInt);
161			public
162			{ public declarations }
163			end;
164
165			var
166			Form1: TForm1;
167
168			implementation
169
170			{$R *.lfm}
171
172			uses IB, SelectDeptDlgUnit,MonitorFormUnit;
173
174			const
175			sNoName = '<no name>';
176
177			function ExtractDBException(msg: string): string;
178			var Lines: TStringList;
179			begin
180			Lines := TStringList.Create;
181			try
182			Lines.Text := msg;
183			if pos('exception',Lines[0]) = 1 then
184			Result := Lines[2]
185			else
186			Result := msg
187			finally
188			Lines.Free
189			end;
190			end;
191
192			{ TForm1 }
193
194			procedure TForm1.EmployeesSALARYGetText(Sender: TField; var aText: string;
195			DisplayText: Boolean);
196			begin
197			if DisplayText then
198			begin
199			if Sender.IsNUll then
200			aText := ''
201			else
202			aText := FormatFloat('$#,##0.00',Sender.AsFloat)
203			end
204			else
205			aText := Sender.AsString
206			end;
207
208			procedure TForm1.SaveChangesExecute(Sender: TObject);
209			begin
210			Employees.Transaction.Commit
211			end;
212
213			procedure TForm1.SaveChangesUpdate(Sender: TObject);
214			begin
215			(Sender as TAction).Enabled := FDirty
216			end;
217
218			procedure TForm1.Reopen(Data: PtrInt);
219			begin
220			with IBTransaction1 do
221			if not InTransaction then StartTransaction;
222	tony	209	Depts.Active := true;
223	tony	31	Employees.Active := true;
224			end;
225
226			procedure TForm1.DoOpenDatabase(Data: PtrInt);
227			begin
228			repeat
229			try
230			IBDatabase1.Connected := true;
231			except
232			on E:EIBClientError do
233			begin
234			Close;
235			Exit
236			end;
237			On E:Exception do
238			MessageDlg(E.Message,mtError,[mbOK],0);
239			end;
240			until IBDatabase1.Connected;
241			Reopen(0);
242			MonitorForm.BringToFront;
243			end;
244
245			procedure TForm1.AddEmployeeExecute(Sender: TObject);
246			begin
247			Employees.Append
248			end;
249
250			procedure TForm1.SelectDeptExecute(Sender: TObject);
251			var Dept_No: string;
252			begin
253			if SelectDeptDlg.ShowModal(EmployeesDEPT_KEY_PATH.AsString,Dept_No) = mrOK then
254			begin
255			Employees.Edit;
256			EmployeesDEPT_NO.AsString := Dept_No;
257			try
258			Employees.Post;
259			except
260			Employees.Cancel;
261			raise;
262			end;
263			IBDynamicGrid1.ShowEditorPanel;
264			end;
265			end;
266
267			procedure TForm1.EmployeesAfterPost(DataSet: TDataSet);
268			begin
269			Employees.Refresh
270			end;
271
272			procedure TForm1.EmployeesValidatePost(Sender: TObject; var CancelPost: boolean
273			);
274			begin
275			{Cancel if no name entered}
276			CancelPost := (EmployeesLAST_NAME.AsString = sNoName) and (EmployeesFIRST_NAME.AsString = sNoName);
277			end;
278
279			procedure TForm1.JobCodeChangeTimerTimer(Sender: TObject);
280			begin
281			Countries.Active := false;
282			Countries.Active := true;
283			JobCodeChangeTimer.Interval := 0;
284			end;
285
286			procedure TForm1.JobGradeChangeTimerTimer(Sender: TObject);
287			begin
288			Countries.Active := false;
289			JobCodes.Active := false;
290			Countries.Active := true;
291			JobCodes.Active := true;
292			JobGradeChangeTimer.Interval := 0;
293			end;
294
295			procedure TForm1.JobGradeDBComboBoxCloseUp(Sender: TObject);
296			begin
297			JobGradeDBComboBox.EditingDone; //See http://bugs.freepascal.org/view.php?id=27186
298			end;
299
300			procedure TForm1.BeforeDateChange(Sender: TObject);
301			begin
302			Employees.Active := false;
303			Employees.Active := true
304			end;
305
306			procedure TForm1.CancelChangesExecute(Sender: TObject);
307			begin
308			Employees.Transaction.Rollback
309			end;
310
311			procedure TForm1.DeleteEmployeeExecute(Sender: TObject);
312			begin
313			if MessageDlg(
314			Format('Remove %s from Employee List?',[Employees.FieldByName('Full_Name').AsString]),
315			mtConfirmation,[mbYes,mbNo],0) = mrYes then
316			Employees.Delete
317			end;
318
319			procedure TForm1.EditEmployeeExecute(Sender: TObject);
320			begin
321			IBDynamicGrid1.ShowEditorPanel;
322			end;
323
324			procedure TForm1.EditEmployeeUpdate(Sender: TObject);
325			begin
326			(Sender as TAction).Enabled := Employees.Active and (Employees.RecordCount > 0)
327			end;
328
329			procedure TForm1.EmployeesAfterInsert(DataSet: TDataSet);
330			begin
331			EmployeesJOB_COUNTRY.AsString := 'USA';
332			EmployeesJOB_CODE.AsString := 'SRep';
333			EmployeesJOB_GRADE.AsInteger := 4;
334			EmployeesSALARY.AsCurrency := 20000;
335			EmployeesFIRST_NAME.AsString := sNoName;
336			EmployeesLAST_NAME.AsString := sNoName;
337			EmployeesHIRE_DATE.AsDateTime := now;
338			EmployeesDEPT_NO.AsString := '000';
339			FDirty := true;
340			end;
341
342			procedure TForm1.EmployeesAfterOpen(DataSet: TDataSet);
343			begin
344			TotalsQuery.Active := true;
345	tony	209	Countries.Active := true;
346			JobCodes.Active := true;
347	tony	31	IBDynamicGrid1.SetFocus;
348			end;
349
350			procedure TForm1.EmployeesBeforeClose(DataSet: TDataSet);
351			begin
352	tony	209	TotalsQuery.Active := false;
353			Countries.Active := false;
354			JobCodes.Active := false;
355	tony	31	end;
356
357			procedure TForm1.EmployeesBeforeOpen(DataSet: TDataSet);
358			begin
359			if BeforeDate.Date > 0 then
360			(DataSet as TIBParserDataSet).Parser.Add2WhereClause('HIRE_DATE < :BeforeDate');
361			if AfterDate.Date > 0 then
362			(DataSet as TIBParserDataSet).Parser.Add2WhereClause('HIRE_DATE > :AfterDate');
363
364			case SalaryRange.ItemIndex of
365			1:
366			(DataSet as TIBParserDataSet).Parser.Add2WhereClause('Salary < 40000');
367			2:
368			(DataSet as TIBParserDataSet).Parser.Add2WhereClause('Salary >= 40000 and Salary < 100000');
369			3:
370			(DataSet as TIBParserDataSet).Parser.Add2WhereClause('Salary >= 100000');
371			end;
372
373
374
375			{Parameter value must be set after all SQL changes have been made}
376			if BeforeDate.Date > 0 then
377			(DataSet as TIBParserDataSet).ParamByName('BeforeDate').AsDateTime := BeforeDate.Date;
378			if AfterDate.Date > 0 then
379			(DataSet as TIBParserDataSet).ParamByName('AfterDate').AsDateTime := AfterDate.Date;
380
381			end;
382
383			procedure TForm1.EmployeesJOB_CODEChange(Sender: TField);
384			begin
385			JobCodeChangeTimer.Interval := 200;
386			end;
387
388			procedure TForm1.EmployeesJOB_GRADEChange(Sender: TField);
389			begin
390			JobGradeChangeTimer.Interval := 200;
391			end;
392
393			procedure TForm1.FormClose(Sender: TObject; var CloseAction: TCloseAction);
394			begin
395			FClosing := true;
396			if IBTransaction1.InTransaction then
397			IBTransaction1.Commit;
398			end;
399
400			procedure TForm1.FormShow(Sender: TObject);
401			begin
402			MonitorForm.Visible := true;
403			Application.QueueAsyncCall(@DoOpenDatabase,0);
404			end;
405
406			procedure TForm1.EmployeesAfterDelete(DataSet: TDataSet);
407			begin
408			FDirty := true
409			end;
410
411			procedure TForm1.EmployeesAfterTransactionEnd(Sender: TObject);
412			begin
413			FDirty := false;
414			if not FClosing then
415			Application.QueueAsyncCall(@Reopen,0)
416			end;
417
418			procedure TForm1.EmployeesPostError(DataSet: TDataSet; E: EDatabaseError;
419			var DataAction: TDataAction);
420			begin
421			if E is EIBError then
422			begin
423			MessageDlg(ExtractDBException(EIBError(E).message),mtError,[mbOK],0);
424			DataSet.Cancel;
425			DataAction := daAbort
426			end;
427			end;
428
429			end.
430