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{
* This Source Code Form is subject to the terms of the Mozilla Public License,
* v. 2.0. If a copy of the MPL was not distributed with this file, You can
* obtain one at http://mozilla.org/MPL/2.0/
*
* Copyright (C) 2012-2014, Peter Johnson (www.delphidabbler.com).
*
* $Rev$
* $Date$
*
* Implements a dialogue box which can create a duplicate copy of a snippet.
}
unit FmDuplicateSnippetDlg;
interface
uses
// Delphi
SysUtils,
Controls,
StdCtrls,
ExtCtrls,
Classes,
// Project
CS.Database.Types,
FmGenericOKDlg,
UBaseObjects;
type
TDuplicateSnippetDlg = class(TGenericOKDlg, INoPublicConstruct)
chkEdit: TCheckBox;
edTitle: TEdit;
lblTitle: TLabel;
procedure btnOKClick(Sender: TObject);
procedure FormCreate(Sender: TObject);
procedure FormDestroy(Sender: TObject);
strict private
type
TPersistentOptions = class(TObject)
strict private
var
fEditSnippetOnClose: Boolean;
public
constructor Create;
destructor Destroy; override;
property EditSnippetOnClose: Boolean
read fEditSnippetOnClose write fEditSnippetOnClose;
end;
strict private
var
fSnippet: ISnippet;
fNewSnippetID: TSnippetID;
fOptions: TPersistentOptions;
procedure ValidateData;
procedure HandleException(const E: Exception);
procedure UpdateDatabase;
strict protected
/// <summary>Initialises form fields and controls.</summary>
/// <remarks>Overridden method called from ancestor class.</remarks>
procedure InitForm; override;
/// <summary>Aligns and arranges controls.</summary>
/// <remarks>Overridden method called from ancestor class.</remarks>
procedure ArrangeForm; override;
public
class function Execute(const AOwner: TComponent;
ASnippet: ISnippet): Boolean;
end;
implementation
uses
// Delphi
Math,
// Project
DB.UMain,
UCtrlArranger,
UExceptions,
UMessageBox,
USettings,
USnippetValidator,
UStrUtils,
UUserDBMgr;
{$R *.dfm}
{ TDuplicateSnippetDlg }
procedure TDuplicateSnippetDlg.ArrangeForm;
begin
TCtrlArranger.SetLabelHeights(Self);
TCtrlArranger.AlignLefts(
[lblTitle, edTitle, chkEdit], 0
);
lblTitle.Top := 0;
TCtrlArranger.MoveBelow(lblTitle, edTitle, 4);
TCtrlArranger.MoveBelow(edTitle, chkEdit, 16);
pnlBody.ClientWidth := Max(
TCtrlArranger.TotalControlWidth(pnlBody) + 8,
TCtrlArranger.RightOf(btnHelp) - btnOK.Left
);
pnlBody.ClientHeight := TCtrlArranger.TotalControlHeight(pnlBody) + 8;
// Arrange inherited controls and size the form
inherited;
end;
procedure TDuplicateSnippetDlg.btnOKClick(Sender: TObject);
begin
try
ValidateData;
UpdateDatabase;
except
on E: Exception do
HandleException(E);
end;
end;
class function TDuplicateSnippetDlg.Execute(const AOwner: TComponent;
ASnippet: ISnippet): Boolean;
resourcestring
sCaption = 'Duplicate %s'; // dialogue box caption
begin
Assert(Assigned(ASnippet), ClassName + '.Execute: ASnippet is nil');
with InternalCreate(AOwner) do
try
Caption := Format(sCaption, [ASnippet.Title]);
fSnippet := ASnippet;
Result := ShowModal = mrOK;
finally
Free;
end;
end;
procedure TDuplicateSnippetDlg.HandleException(const E: Exception);
var
Error: EDataEntry;
begin
ModalResult := mrNone;
if E is EDataEntry then
begin
Error := E as EDataEntry;
TMessageBox.Error(Self, Error.Message);
Error.Ctrl.SetFocus;
if Error.HasSelection and (Error.Ctrl is TCustomEdit) then
begin
(Error.Ctrl as TCustomEdit).SelStart := Error.Selection.StartPos;
(Error.Ctrl as TCustomEdit).SelLength := Error.Selection.Length;
end;
end
else
raise E;
end;
procedure TDuplicateSnippetDlg.InitForm;
begin
inherited;
edTitle.Text := fSnippet.Title;
chkEdit.Checked := fOptions.EditSnippetOnClose;
end;
procedure TDuplicateSnippetDlg.UpdateDatabase;
var
NewSnippet: IEditableSnippet;
begin
NewSnippet := Database.NewSnippet;
NewSnippet.UpdateFrom(fSnippet);
NewSnippet.Title := StrTrim(edTitle.Text);
Database.AddSnippet(NewSnippet);
fNewSnippetID := NewSnippet.ID;
end;
procedure TDuplicateSnippetDlg.ValidateData;
var
ErrMsg: string;
begin
if not TSnippetValidator.ValidateTitle(edTitle.Text, ErrMsg) then
raise EDataEntry.Create(ErrMsg, edTitle);
end;
procedure TDuplicateSnippetDlg.FormCreate(Sender: TObject);
begin
inherited;
fOptions := TPersistentOptions.Create;
end;
procedure TDuplicateSnippetDlg.FormDestroy(Sender: TObject);
begin
if (ModalResult = mrOK) and chkEdit.Checked then
TDBModificationMgr.EditSnippet(fNewSnippetID);
fOptions.EditSnippetOnClose := chkEdit.Checked;
inherited;
fOptions.Free;
end;
{ TDuplicateSnippetDlg.TPersistentOptions }
constructor TDuplicateSnippetDlg.TPersistentOptions.Create;
var
Section: ISettingsSection;
begin
inherited Create;
Section := Settings.ReadSection(ssDuplicateSnippet);
fEditSnippetOnClose := Section.GetBoolean('EditSnippetOnClose', False);
end;
destructor TDuplicateSnippetDlg.TPersistentOptions.Destroy;
var
Section: ISettingsSection;
begin
Section := Settings.EmptySection(ssDuplicateSnippet);
Section.SetBoolean('EditSnippetOnClose', fEditSnippetOnClose);
Section.Save;
inherited;
end;
end.
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