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{*****************************************}
{ }
{ FastReport v2.3 }
{ Select Band datasource dialog }
{ }
{ Copyright (c) 1998-99 by Tzyganenko A. }
{ }
{*****************************************}
unit LR_VBnd;
interface
{$I LR_Vers.inc}
uses
Classes, SysUtils, LResources,
Forms, Controls, Graphics, Dialogs,
Buttons, StdCtrls, ButtonPanel, Spin,Variants,
LR_Class, LR_Intrp;
type
{ TfrVBandEditorForm }
TfrVBandEditorForm = class(TForm)
ButtonPanel1: TButtonPanel;
edtRecCount: TSpinEdit;
GroupBox1: TGroupBox;
GroupBox2: TGroupBox;
Label1: TLabel;
CB1: TComboBox;
LB1: TListBox;
procedure FormCreate(Sender: TObject);
procedure CB1Click(Sender: TObject);
procedure LB1Click(Sender: TObject);
procedure CB1Exit(Sender: TObject);
private
{ Private declarations }
Band: TfrBandView;
List: TfrVariables;
procedure FillCombo;
public
{ Public declarations }
procedure ShowEditor(t: TfrView);
end;
var
frVBandEditorForm: TfrVBandEditorForm;
implementation
{$R *.lfm}
uses LR_DSet, LR_Const, LR_Utils;
procedure TfrVBandEditorForm.ShowEditor(t: TfrView);
var
i, j, n: Integer;
s: String;
t1: TfrView;
b: Boolean;
begin
Band := t as TfrBandView;
List := TfrVariables.Create;
try
s := Band.Dataset;
b := False;
if Pos(';', s) = 0 then
b := True;
with frDesigner.Page do
begin
for i := 0 to Objects.Count - 1 do
begin
t1 := TfrView(Objects[i]);
if (t1.Typ = gtBand) and not (TfrBandView(t1).BandType in
[btReportTitle..btPageFooter, btOverlay, btCrossHeader..btCrossFooter]) then
begin
LB1.Items.Add(t1.Name + ': ' + frBandNames[TfrBandView(t1).BandType]);
n := Pos(AnsiUpperCase(t1.Name) + '=', AnsiUpperCase(s));
if n <> 0 then
begin
n := n + Length(t1.Name) + 1;
j := n;
while s[j] <> ';' do
Inc(j);
List[t1.Name] := Copy(s, n, j - n);
end
else
if b then
List[t1.Name] := s
else
List[t1.Name] := '0';
end;
end;
end;
if LB1.Items.Count = 0 then
Exit;
FillCombo;
LB1.ItemIndex := 0;
LB1Click(nil);
if ShowModal = mrOk then
begin
CB1Exit(nil);
frDesigner.BeforeChange;
s := '';
for i := 0 to List.Count - 1 do
begin
s := s + List.Name[i] + '=' + VarToStr(List.Value[i]) + ';';
end;
Band.DataSet := s;
end;
finally
List.Free;
end;
end;
procedure TfrVBandEditorForm.FillCombo;
begin
frGetComponents(CurReport.Owner, TfrDataset, CB1.Items, nil);
TStringList(CB1.Items).Sorted := False;
TStringList(CB1.Items).Sort;
CB1.Items.Insert(0, sVirtualDataset);
CB1.Items.Insert(0, sNotAssigned);
end;
procedure TfrVBandEditorForm.FormCreate(Sender: TObject);
begin
Caption := sVBandEditorFormCapt;
GroupBox1.Caption := sVBandEditorFormBnd;
GroupBox2.Caption := sVBandEditorFormDataSource;
Label1.Caption := sVBandEditorFormRecordCount;
end;
procedure TfrVBandEditorForm.CB1Click(Sender: TObject);
begin
frEnableControls([Label1, edtRecCount], CB1.ItemIndex = 1);
end;
procedure TfrVBandEditorForm.LB1Click(Sender: TObject);
var
i: Integer;
s: String;
begin
s := LB1.Items[LB1.ItemIndex];
s := Copy(s, 1, Pos(':', s) - 1);
s := List[s];
if (s <> '') and (s[1] in ['1'..'9']) then
begin
i := 1;
edtRecCount.Text := s;
end
else
begin
i := CB1.Items.IndexOf(s);
if i = -1 then
i := CB1.Items.IndexOf(sNotAssigned);
end;
CB1.ItemIndex := i;
CB1Click(nil);
end;
procedure TfrVBandEditorForm.CB1Exit(Sender: TObject);
var
s: String;
begin
s := LB1.Items[LB1.ItemIndex];
s := Copy(s, 1, Pos(':', s) - 1);
if CB1.ItemIndex = 1 then
List[s] := edtRecCount.Text
else
List[s] := CB1.Items[CB1.ItemIndex];
end;
end.
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