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unit Unit1;
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{$mode objfpc}{$H+}
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interface
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uses
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Classes, SysUtils, FileUtil, Forms, Controls, Graphics, Dialogs, DBGrids,
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StdCtrls, ActnList, EditBtn, DbCtrls, ExtCtrls, Buttons, IBDatabase, IBQuery,
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IBCustomDataSet, IBUpdateSQL, IBDynamicGrid, IBLookupComboEditBox,
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db, DBExtCtrls;
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type
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{ TForm1 }
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TForm1 = class(TForm)
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DBEdit6: TDBEdit;
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EmployeesDEPT_KEY_PATH: TIBStringField;
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EmployeesDEPT_PATH: TIBStringField;
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EmployeesTEst: TStringField;
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IBLookupComboEditBox1: TIBLookupComboEditBox;
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IBLookupComboEditBox2: TIBLookupComboEditBox;
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IBQuery1DEPT_NO: TIBStringField;
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IBQuery1EMP_NO: TSmallintField;
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IBQuery1FIRST_NAME: TIBStringField;
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IBQuery1FULL_NAME: TIBStringField;
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IBQuery1HIRE_DATE: TDateTimeField;
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IBQuery1JOB_CODE: TIBStringField;
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IBQuery1JOB_COUNTRY: TIBStringField;
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IBQuery1JOB_GRADE: TSmallintField;
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IBQuery1LAST_NAME: TIBStringField;
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IBQuery1PHONE_EXT: TIBStringField;
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IBQuery1SALARY: TIBBCDField;
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SelectDept: TAction;
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Button4: TButton;
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Button5: TButton;
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CancelChanges: TAction;
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SalaryRange: TComboBox;
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CountrySource: TDataSource;
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BeforeDate: TDateEdit;
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AfterDate: TDateEdit;
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DeptsSource: TDataSource;
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Depts: TIBQuery;
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JobCodeSource: TDataSource;
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DBEdit1: TDBEdit;
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DBEdit2: TDBEdit;
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DBEdit3: TDBEdit;
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DBEdit4: TDBEdit;
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DBEdit5: TDBEdit;
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DBText1: TDBText;
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Employees: TIBDataSet;
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EmployeesDEPT_NO: TIBStringField;
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EmployeesEMP_NO: TSmallintField;
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EmployeesFIRST_NAME: TIBStringField;
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EmployeesFULL_NAME: TIBStringField;
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EmployeesHIRE_DATE: TDateTimeField;
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EmployeesJOB_CODE: TIBStringField;
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EmployeesJOB_COUNTRY: TIBStringField;
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EmployeesJOB_GRADE: TSmallintField;
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EmployeesLAST_NAME: TIBStringField;
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EmployeesPHONE_EXT: TIBStringField;
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EmployeesSALARY: TIBBCDField;
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IBDateEdit1: TDBDateEdit;
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IBDynamicGrid1: TIBDynamicGrid;
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Countries: TIBQuery;
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JobCodes: TIBQuery;
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JobGradeDBComboBox: TDBComboBox;
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Label10: TLabel;
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Label11: TLabel;
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Label12: TLabel;
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Label13: TLabel;
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Label3: TLabel;
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Label4: TLabel;
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Label5: TLabel;
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Label6: TLabel;
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Label7: TLabel;
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Label8: TLabel;
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Label9: TLabel;
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Panel1: TPanel;
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Panel2: TPanel;
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EmployeeEditorPanel: TPanel;
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SpeedButton1: TSpeedButton;
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JobGradeChangeTimer: TTimer;
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JobCodeChangeTimer: TTimer;
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TotalsQueryTOTALSALARIES: TIBBCDField;
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TotalsSource: TDataSource;
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TotalsQuery: TIBQuery;
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Label1: TLabel;
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Label2: TLabel;
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SaveChanges: TAction;
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DeleteEmployee: TAction;
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EditEmployee: TAction;
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AddEmployee: TAction;
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ActionList1: TActionList;
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Button1: TButton;
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Button2: TButton;
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Button3: TButton;
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EmployeeSource: TDataSource;
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IBDatabase1: TIBDatabase;
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IBTransaction1: TIBTransaction;
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procedure EmployeesAfterPost(DataSet: TDataSet);
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procedure EmployeesValidatePost(Sender: TObject; var CancelPost: boolean);
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procedure JobCodeChangeTimerTimer(Sender: TObject);
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procedure JobGradeChangeTimerTimer(Sender: TObject);
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procedure JobGradeDBComboBoxCloseUp(Sender: TObject);
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procedure SelectDeptExecute(Sender: TObject);
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procedure AddEmployeeExecute(Sender: TObject);
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procedure BeforeDateChange(Sender: TObject);
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procedure CancelChangesExecute(Sender: TObject);
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procedure CountriesBeforeOpen(DataSet: TDataSet);
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procedure DeleteEmployeeExecute(Sender: TObject);
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procedure EditEmployeeExecute(Sender: TObject);
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procedure EditEmployeeUpdate(Sender: TObject);
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procedure EmployeesAfterInsert(DataSet: TDataSet);
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procedure EmployeesAfterOpen(DataSet: TDataSet);
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procedure EmployeesAfterScroll(DataSet: TDataSet);
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procedure EmployeesBeforeClose(DataSet: TDataSet);
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procedure EmployeesBeforeOpen(DataSet: TDataSet);
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procedure EmployeesJOB_CODEChange(Sender: TField);
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procedure EmployeesJOB_GRADEChange(Sender: TField);
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procedure FormClose(Sender: TObject; var CloseAction: TCloseAction);
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procedure FormShow(Sender: TObject);
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procedure EmployeesAfterDelete(DataSet: TDataSet);
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procedure EmployeesAfterTransactionEnd(Sender: TObject);
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procedure EmployeesPostError(DataSet: TDataSet; E: EDatabaseError;
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var DataAction: TDataAction);
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procedure EmployeesSALARYGetText(Sender: TField; var aText: string;
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DisplayText: Boolean);
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procedure JobCodesBeforeOpen(DataSet: TDataSet);
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procedure SaveChangesExecute(Sender: TObject);
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procedure SaveChangesUpdate(Sender: TObject);
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private
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{ private declarations }
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FDirty: boolean;
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FClosing: boolean;
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procedure Reopen(Data: PtrInt);
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public
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{ public declarations }
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end;
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var
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Form1: TForm1;
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implementation
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{$R *.lfm}
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uses IB, Unit2;
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const
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sNoName = '<no name>';
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function ExtractDBException(msg: string): string;
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var Lines: TStringList;
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begin
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Lines := TStringList.Create;
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try
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Lines.Text := msg;
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if pos('exception',Lines[0]) = 1 then
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Result := Lines[2]
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else
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Result := msg
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finally
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Lines.Free
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end;
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end;
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{ TForm1 }
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procedure TForm1.EmployeesSALARYGetText(Sender: TField; var aText: string;
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DisplayText: Boolean);
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begin
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if DisplayText then
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begin
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if Sender.IsNUll then
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aText := ''
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else
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aText := FormatFloat('$#,##0.00',Sender.AsFloat)
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end
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else
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aText := Sender.AsString
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end;
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procedure TForm1.JobCodesBeforeOpen(DataSet: TDataSet);
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begin
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JobCodes.ParamByName('JOB_GRADE').AsInteger := EmployeesJOB_GRADE.AsInteger;
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JobCodes.ParamByName('JOB_COUNTRY').AsString := EmployeesJOB_COUNTRY.AsString
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end;
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procedure TForm1.SaveChangesExecute(Sender: TObject);
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begin
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Employees.Transaction.Commit
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end;
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procedure TForm1.SaveChangesUpdate(Sender: TObject);
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begin
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(Sender as TAction).Enabled := FDirty
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end;
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procedure TForm1.Reopen(Data: PtrInt);
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begin
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with IBTransaction1 do
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if not InTransaction then StartTransaction;
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Countries.Active := true;
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Employees.Active := true;
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JobCodes.Active := true;
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Depts.Active := true;
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end;
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procedure TForm1.AddEmployeeExecute(Sender: TObject);
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begin
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Employees.Append
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end;
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procedure TForm1.SelectDeptExecute(Sender: TObject);
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var Dept_No: string;
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begin
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if SelectDeptDlg.ShowModal(EmployeesDEPT_KEY_PATH.AsString,Dept_No) = mrOK then
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begin
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Employees.Edit;
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EmployeesDEPT_NO.AsString := Dept_No;
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try
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Employees.Post;
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except
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Employees.Cancel;
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raise;
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end;
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IBDynamicGrid1.ShowEditorPanel;
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end;
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end;
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procedure TForm1.EmployeesAfterPost(DataSet: TDataSet);
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begin
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Employees.Refresh
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end;
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procedure TForm1.EmployeesValidatePost(Sender: TObject; var CancelPost: boolean
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);
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begin
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{Cancel if no name entered}
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CancelPost := (EmployeesLAST_NAME.AsString = sNoName) and (EmployeesFIRST_NAME.AsString = sNoName);
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end;
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procedure TForm1.JobCodeChangeTimerTimer(Sender: TObject);
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begin
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Countries.Active := false;
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Countries.Active := true;
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JobCodeChangeTimer.Interval := 0;
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end;
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procedure TForm1.JobGradeChangeTimerTimer(Sender: TObject);
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begin
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Countries.Active := false;
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JobCodes.Active := false;
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Countries.Active := true;
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JobCodes.Active := true;
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JobGradeChangeTimer.Interval := 0;
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end;
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procedure TForm1.JobGradeDBComboBoxCloseUp(Sender: TObject);
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begin
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JobGradeDBComboBox.EditingDone; //See http://bugs.freepascal.org/view.php?id=27186
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end;
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procedure TForm1.BeforeDateChange(Sender: TObject);
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begin
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Employees.Active := false;
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Employees.Active := true
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end;
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procedure TForm1.CancelChangesExecute(Sender: TObject);
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begin
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Employees.Transaction.Rollback
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end;
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procedure TForm1.CountriesBeforeOpen(DataSet: TDataSet);
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begin
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Countries.ParamByName('JOB_GRADE').AsInteger := EmployeesJOB_GRADE.AsInteger;
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Countries.ParamByName('JOB_CODE').AsString := EmployeesJOB_CODE.AsString
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end;
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procedure TForm1.DeleteEmployeeExecute(Sender: TObject);
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begin
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if MessageDlg(
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Format('Remove %s from Employee List?',[Employees.FieldByName('Full_Name').AsString]),
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mtConfirmation,[mbYes,mbNo],0) = mrYes then
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Employees.Delete
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end;
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procedure TForm1.EditEmployeeExecute(Sender: TObject);
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begin
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IBDynamicGrid1.ShowEditorPanel;
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end;
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procedure TForm1.EditEmployeeUpdate(Sender: TObject);
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begin
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(Sender as TAction).Enabled := Employees.Active and (Employees.RecordCount > 0)
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end;
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procedure TForm1.EmployeesAfterInsert(DataSet: TDataSet);
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begin
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EmployeesJOB_COUNTRY.AsString := 'USA';
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EmployeesJOB_CODE.AsString := 'SRep';
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EmployeesJOB_GRADE.AsInteger := 4;
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EmployeesSALARY.AsCurrency := 20000;
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EmployeesFIRST_NAME.AsString := sNoName;
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EmployeesLAST_NAME.AsString := sNoName;
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EmployeesHIRE_DATE.AsDateTime := now;
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EmployeesDEPT_NO.AsString := '000';
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FDirty := true;
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end;
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procedure TForm1.EmployeesAfterOpen(DataSet: TDataSet);
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begin
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TotalsQuery.Active := true;
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IBDynamicGrid1.SetFocus;
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end;
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procedure TForm1.EmployeesAfterScroll(DataSet: TDataSet);
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begin
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JobGradeChangeTimer.Interval := 200;
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end;
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procedure TForm1.EmployeesBeforeClose(DataSet: TDataSet);
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begin
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TotalsQuery.Active := false
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end;
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procedure TForm1.EmployeesBeforeOpen(DataSet: TDataSet);
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begin
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if BeforeDate.Date > 0 then
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(DataSet as TIBParserDataSet).Parser.Add2WhereClause('HIRE_DATE < :BeforeDate');
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if AfterDate.Date > 0 then
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(DataSet as TIBParserDataSet).Parser.Add2WhereClause('HIRE_DATE > :AfterDate');
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case SalaryRange.ItemIndex of
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1:
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(DataSet as TIBParserDataSet).Parser.Add2WhereClause('Salary < 40000');
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2:
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(DataSet as TIBParserDataSet).Parser.Add2WhereClause('Salary >= 40000 and Salary < 100000');
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3:
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(DataSet as TIBParserDataSet).Parser.Add2WhereClause('Salary >= 100000');
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end;
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{Parameter value must be set after all SQL changes have been made}
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if BeforeDate.Date > 0 then
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(DataSet as TIBParserDataSet).ParamByName('BeforeDate').AsDateTime := BeforeDate.Date;
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if AfterDate.Date > 0 then
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(DataSet as TIBParserDataSet).ParamByName('AfterDate').AsDateTime := AfterDate.Date;
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end;
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procedure TForm1.EmployeesJOB_CODEChange(Sender: TField);
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begin
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JobCodeChangeTimer.Interval := 200;
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end;
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procedure TForm1.EmployeesJOB_GRADEChange(Sender: TField);
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begin
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JobGradeChangeTimer.Interval := 200;
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end;
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procedure TForm1.FormClose(Sender: TObject; var CloseAction: TCloseAction);
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begin
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FClosing := true;
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if IBTransaction1.InTransaction then
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IBTransaction1.Commit;
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end;
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procedure TForm1.FormShow(Sender: TObject);
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begin
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repeat
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try
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IBDatabase1.Connected := true;
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except
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on E:EIBClientError do
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begin
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Close;
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Exit
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end;
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On E:Exception do
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MessageDlg(E.Message,mtError,[mbOK],0);
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end;
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until IBDatabase1.Connected;
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Reopen(0);
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end;
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procedure TForm1.EmployeesAfterDelete(DataSet: TDataSet);
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begin
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FDirty := true
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end;
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procedure TForm1.EmployeesAfterTransactionEnd(Sender: TObject);
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begin
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FDirty := false;
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if not FClosing then
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| 400 |
Application.QueueAsyncCall(@Reopen,0)
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end;
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procedure TForm1.EmployeesPostError(DataSet: TDataSet; E: EDatabaseError;
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var DataAction: TDataAction);
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| 405 |
begin
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| 406 |
if E is EIBError then
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| 407 |
begin
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| 408 |
MessageDlg(ExtractDBException(EIBError(E).message),mtError,[mbOK],0);
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DataSet.Cancel;
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DataAction := daAbort
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end;
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end;
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end.
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|
