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
#	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 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	Depts.Active := true;
223	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	Countries.Active := true;
346	JobCodes.Active := true;
347	IBDynamicGrid1.SetFocus;
348	end;
349
350	procedure TForm1.EmployeesBeforeClose(DataSet: TDataSet);
351	begin
352	TotalsQuery.Active := false;
353	Countries.Active := false;
354	JobCodes.Active := false;
355	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