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{
*****************************************************************************
See the file COPYING.modifiedLGPL.txt, included in this distribution,
for details about the license.
*****************************************************************************
Author: Michael W. Vogel
Abstract:
Dialog for the TPage property editor.
}
unit PagesPropEditDlg;
{$mode objfpc}{$H+}
interface
uses
Classes, SysUtils,
// LCL
Forms, ButtonPanel, StdCtrls, Dialogs, ExtCtrls, Controls,
// IdeIntf
ObjInspStrConsts, IDEDialogs;
type
{ TPagesPropEditorFrm }
TPagesPropEditorFrm = class(TForm)
BtnPanel: TButtonPanel;
TextGroupBox: TGroupBox;
ListBox: TListBox;
AddButton: TButton;
RenameButton: TButton;
DeleteButton: TButton;
MoveUpButton: TButton;
MoveDownButton: TButton;
procedure AddButtonClick(Sender: TObject);
procedure DeleteButtonClick(Sender: TObject);
procedure FormCreate(Sender: TObject);
procedure FormShow(Sender: TObject);
procedure ListBoxSelectionChange(Sender: TObject; User: boolean);
procedure MoveDownButtonClick(Sender: TObject);
procedure MoveUpButtonClick(Sender: TObject);
procedure RenameButtonClick(Sender: TObject);
private
function GetNextPageName: String;
procedure InvalidateButtons;
end;
implementation
{$R *.lfm}
uses
PropEdits;
{ TPagesPropEditorFrm }
procedure TPagesPropEditorFrm.AddButtonClick(Sender: TObject);
var
aName: String;
begin
try
aName := GetNextPageName;
if not InputQuery(oisAddPage, oisInsertPageName, aName) then Exit;
if not IsValidIdent(aName) then
raise Exception.Create(Format(oisComponentNameIsNotAValidIdentifier, [aName]));
if ListBox.Items.IndexOf(aName) >= 0 then
raise Exception.Create(Format(oisComponentNameIsNotAValidIdentifier, [aName]));
ListBox.AddItem(aName, nil);
except
on e: Exception do
ShowMessage(e.Message);
end;
InvalidateButtons;
end;
procedure TPagesPropEditorFrm.FormCreate(Sender: TObject);
begin
Caption := oisPagesEditorDialog;
TextGroupBox.Caption := oisPages;
AddButton.Caption := oisAdd;
RenameButton.Caption := oisRename;
DeleteButton.Caption := oisDelete;
MoveUpButton.Caption := rscdMoveUp;
MoveDownButton.Caption := rscdMoveDown;
end;
procedure TPagesPropEditorFrm.DeleteButtonClick(Sender: TObject);
begin
if IDEQuestionDialog(nbcesDeletePage, oisDeletePageQuestion,
mtConfirmation, [mrYes, mrNo, mrCancel]) <> mrYes then Exit;
ListBox.DeleteSelected;
InvalidateButtons;
end;
procedure TPagesPropEditorFrm.FormShow(Sender: TObject);
begin
InvalidateButtons;
end;
procedure TPagesPropEditorFrm.ListBoxSelectionChange(Sender: TObject; User: boolean);
begin
if not User then Exit;
InvalidateButtons;
end;
procedure TPagesPropEditorFrm.MoveDownButtonClick(Sender: TObject);
var
Index: Integer;
begin
Index := ListBox.ItemIndex;
ListBox.Items.Move(Index, Index + 1);
ListBox.ItemIndex := Index + 1;
end;
procedure TPagesPropEditorFrm.MoveUpButtonClick(Sender: TObject);
var
Index: Integer;
begin
Index := ListBox.ItemIndex;
ListBox.Items.Move(Index, Index - 1);
ListBox.ItemIndex := Index - 1;
end;
procedure TPagesPropEditorFrm.RenameButtonClick(Sender: TObject);
var
aName: String;
begin
try
aName := ListBox.Items[ListBox.ItemIndex];
if not InputQuery(oisRenamePage, oisInsertPageName, aName) then Exit;
if aName = ListBox.Items[ListBox.ItemIndex] then Exit;
if not IsValidIdent(aName) then
raise Exception.Create(Format(oisComponentNameIsNotAValidIdentifier, [aName]));
if ListBox.Items.IndexOf(aName) >= 0 then
raise Exception.Create(Format(oisComponentNameIsNotAValidIdentifier, [aName]));
ListBox.Items[ListBox.ItemIndex] := aName;
except
on e: Exception do
ShowMessage(e.Message);
end;
end;
function TPagesPropEditorFrm.GetNextPageName: String;
var
i, j: integer;
begin
// same as TCustomFormEditor.CreateUniqueComponentName
i := 1;
while True do begin
j := ListBox.Items.Count - 1;
Result := ClassNameToComponentName(TPage.ClassName);
if Result[Length(Result)] in ['0'..'9'] then
Result := Result + '_';
Result := Result + IntToStr(i);
while (j >= 0)
and (CompareText(Result, ListBox.Items[j]) <> 0) do
dec(j);
if j < 0 then Exit;
inc(i);
end;
end;
procedure TPagesPropEditorFrm.InvalidateButtons;
begin
if ListBox.Count = 0 then
begin
RenameButton.Enabled := False;
DeleteButton.Enabled := False;
MoveUpButton.Enabled := False;
MoveDownButton.Enabled := False;
Exit;
end;
if ListBox.Count = 1 then
begin
RenameButton.Enabled := True;
DeleteButton.Enabled := True;
MoveUpButton.Enabled := False;
MoveDownButton.Enabled := False;
ListBox.ItemIndex := 0;
Exit;
end;
RenameButton.Enabled := True;
DeleteButton.Enabled := True;
if ListBox.ItemIndex < 0 then
ListBox.ItemIndex := 0;
if ListBox.ItemIndex = 0 then
MoveUpButton.Enabled := False
else
MoveUpButton.Enabled := True;
if ListBox.ItemIndex = ListBox.Count - 1 then
MoveDownButton.Enabled := False
else
MoveDownButton.Enabled := True;
end;
end.
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