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{*****************************************}
{ }
{ FastReport v2.3 }
{ Variables form }
{ }
{ Copyright (c) 1998-99 by Tzyganenko A. }
{ }
{*****************************************}
unit LR_Var;
interface
{$I LR_Vers.inc}
uses
Classes, SysUtils, LResources,
Forms, Controls, Graphics, Dialogs,
StdCtrls,
LCLType,LCLIntf,
LR_Const;
type
TfrVarForm = class(TForm)
ValList: TListBox;
ValCombo: TComboBox;
Label1: TLabel;
procedure ValListDblClick(Sender: TObject);
procedure ValListKeyDown(Sender: TObject; var Key: Word;
{%H-}Shift: TShiftState);
procedure ValComboClick(Sender: TObject);
procedure FormActivate(Sender: TObject);
procedure FormCreate(Sender: TObject);
procedure FormDeactivate(Sender: TObject);
procedure FormKeyDown(Sender: TObject; var Key: Word;
{%H-}Shift: TShiftState);
private
{ Private declarations }
function CurVal: String;
function CurDataSet: String;
procedure GetVariables;
procedure GetSpecValues;
procedure GetFRVariables;
procedure FillValCombo;
public
{ Public declarations }
SelectedItem: String;
end;
var
frVarForm: TfrVarForm;
implementation
{$R *.lfm}
uses LR_Class;
var
LastCategory: String;
function TfrVarForm.CurVal: String;
begin
Result := '';
if ValList.ItemIndex <> -1 then
Result := ValList.Items[ValList.ItemIndex];
end;
function TfrVarForm.CurDataSet: String;
begin
Result := '';
if ValCombo.ItemIndex <> -1 then
Result := ValCombo.Items[ValCombo.ItemIndex];
end;
procedure TfrVarForm.FillValCombo;
var
s: TStringList;
begin
s := TStringList.Create;
CurReport.GetCategoryList(s);
s.Add(sSpecVal);
s.Add(sFRVariables);
ValCombo.Items.Assign(s);
s.Free;
end;
procedure TfrVarForm.ValComboClick(Sender: TObject);
begin
if CurDataSet = sFRVariables then
GetFRVariables
else
if CurDataSet = sSpecVal then
GetSpecValues
else
GetVariables;
end;
procedure TfrVarForm.GetVariables;
begin
CurReport.GetVarList(ValCombo.ItemIndex, ValList.Items);
end;
procedure TfrVarForm.GetSpecValues;
var
i: Integer;
begin
with ValList.Items do
begin
Clear;
for i := 0 to frSpecCount-1 do
if i <> 1 then
Add(frSpecArr[i]);
end;
end;
procedure TfrVarForm.GetFRVariables;
var
i: Integer;
begin
with ValList.Items do
begin
Clear;
for i := 0 to frVariables.Count - 1 do
Add(frVariables.Name[i]);
end;
end;
procedure TfrVarForm.ValListKeyDown(Sender: TObject; var Key: Word;
Shift: TShiftState);
begin
if Key = vk_Return then
begin
if CurDataSet <> sSpecVal then
SelectedItem := CurVal
else
if ValList.items.Count>0 then
begin
if ValList.ItemIndex > 0 then
SelectedItem := frSpecFuncs[ValList.ItemIndex + 1]
else
SelectedItem := frSpecFuncs[0];
end;
ModalResult := mrOk;
end;
end;
procedure TfrVarForm.ValListDblClick(Sender: TObject);
begin
if CurDataSet <> sSpecVal then
SelectedItem := CurVal
else
if ValList.items.Count>0 then
begin
if ValList.ItemIndex > 0 then
SelectedItem := frSpecFuncs[ValList.ItemIndex + 1]
else
SelectedItem := frSpecFuncs[0];
end;
ModalResult:=mrOk;
end;
procedure TfrVarForm.FormKeyDown(Sender: TObject; var Key: Word;
Shift: TShiftState);
begin
if Key = vk_Escape then
ModalResult := mrCancel;
end;
procedure TfrVarForm.FormCreate(Sender: TObject);
begin
Caption := sVarFormCapt;
Label1.Caption := sVarFormCat;
end;
procedure TfrVarForm.FormActivate(Sender: TObject);
begin
FillValCombo;
if ValCombo.Items.IndexOf(LastCategory) <> -1 then
ValCombo.ItemIndex := ValCombo.Items.IndexOf(LastCategory)
else
ValCombo.ItemIndex := 0;
ValComboClick(nil);
end;
procedure TfrVarForm.FormDeactivate(Sender: TObject);
begin
if ModalResult = mrOk then
if CurDataSet <> sSpecVal then
SelectedItem := CurVal
else
if ValList.ItemIndex > 0 then
SelectedItem := frSpecFuncs[ValList.ItemIndex + 1]
else
SelectedItem := frSpecFuncs[0];
LastCategory := ValCombo.Items[ValCombo.ItemIndex];
end;
end.
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