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unit frmmain;
{$mode objfpc}{$H+}
interface
uses
SysUtils, Classes,
{ fpGUI Toolkit }
fpg_base, fpg_main, fpg_widget, fpg_form, fpg_button,
fpg_grid, fpg_dialogs, fpg_menu,
{ tiOPF }
tiModelMediator;
type
{ The main application window }
TMainForm = class(TfpgForm)
private
{@VFD_HEAD_BEGIN: MainForm}
grdContacts: TfpgStringGrid;
btnAdd: TfpgButton;
btnEdit: TfpgButton;
btnDelete: TfpgButton;
MainMenu: TfpgMenuBar;
miFile: TfpgPopupMenu;
miEdit: TfpgPopupMenu;
miSystem: TfpgPopupMenu;
{@VFD_HEAD_END: MainForm}
FMediator: TtiModelMediator;
procedure FormShow(Sender: TObject);
procedure GridDoubleClicked(Sender: TObject; AButton: TMouseButton; AShift: TShiftState; const AMousePos: TPoint);
procedure SetupMediators;
procedure miEditAddClick(Sender: TObject);
procedure miEditEditClick(Sender: TObject);
procedure miEditDeleteClick(Sender: TObject);
procedure miSystemCityList(Sender: TObject);
procedure miSystemCountryList(Sender: TObject);
procedure miSystemAddressTypeList(Sender: TObject);
procedure miFileExit(Sender: TObject);
public
procedure AfterCreate; override;
procedure AfterConstruction; override;
constructor Create(AOwner: TComponent); override;
end;
{@VFD_NEWFORM_DECL}
implementation
uses
model, contactmanager, tiListMediators, tiBaseMediator, tiMediators,
frmcontactmaint, frmcitylist, frmcountrylist, tiDialogs, tiObject;
{@VFD_NEWFORM_IMPL}
procedure TMainForm.FormShow(Sender: TObject);
begin
// do nothing yet
end;
procedure TMainForm.GridDoubleClicked(Sender: TObject; AButton: TMouseButton;
AShift: TShiftState; const AMousePos: TPoint);
begin
miEditEditClick(nil);
end;
procedure TMainForm.SetupMediators;
begin
if not Assigned(FMediator) then
begin
FMediator := TtiModelMediator.Create(self);
FMediator.AddComposite('FirstName;LastName(130);EMail(180);Mobile(130);Comments(200)', grdContacts);
end;
FMediator.Subject := gContactManager.ContactList;
FMediator.Active := True;
end;
procedure TMainForm.miEditAddClick(Sender: TObject);
var
c: TContact;
begin
c := TContact.CreateNew;
if EditContact(c) then
gContactManager.ContactList.Add(c)
else
c.Free;
end;
procedure TMainForm.miEditEditClick(Sender: TObject);
var
c: TContact;
begin
if grdContacts.FocusRow < 0 then
begin
tiAppError('You need to select a Contact first');
Exit;
end;
c := TContact(TtiStringGridMediatorView(FMediator.FindByComponent(grdContacts).Mediator).SelectedObject);
if not Assigned(c) then
Exit; //==>
if EditContact(c) then
begin
// we can save contact here if we wanted
end;
end;
procedure TMainForm.miEditDeleteClick(Sender: TObject);
var
c: TContact;
begin
if grdContacts.FocusRow < 0 then
begin
tiAppError('You need to select a Contact first');
Exit;
end;
c := TContact(TtiStringGridMediatorView(FMediator.FindByComponent(grdContacts).Mediator).SelectedObject);
if tiAppConfirmation('Are you sure you want to delete <%s>', [c.FirstName + ' ' + c.LastName]) then
begin
{ We can't use .Deleted property here, because we don't actually save
changes. This means the ObjectState will only be posDelete and not
posDeleted, which is what .FreeDeleted is looking for. }
// c.Deleted := True;
c.ObjectState := posDeleted;
gContactManager.ContactList.FreeDeleted;
end;
end;
procedure TMainForm.miSystemCityList(Sender: TObject);
begin
ShowCities(gContactManager.CityList);
end;
procedure TMainForm.miSystemCountryList(Sender: TObject);
begin
ShowCountries(gContactManager.CountryList);
end;
procedure TMainForm.miSystemAddressTypeList(Sender: TObject);
begin
// ShowAddressTypeList(gContactManager.AddressTypeList);
end;
procedure TMainForm.miFileExit(Sender: TObject);
begin
Close;
end;
procedure TMainForm.AfterCreate;
begin
{@VFD_BODY_BEGIN: MainForm}
Name := 'MainForm';
SetPosition(373, 273, 540, 404);
WindowTitle := 'Demo 21: Address Book Demo using MGM';
grdContacts := TfpgStringGrid.Create(self);
with grdContacts do
begin
Name := 'grdContacts';
SetPosition(12, 56, 516, 336);
Anchors := [anLeft,anRight,anTop,anBottom];
FontDesc := '#Grid';
HeaderFontDesc := '#GridHeader';
OnDoubleClick := @GridDoubleClicked;
end;
btnAdd := TfpgButton.Create(self);
with btnAdd do
begin
Name := 'btnAdd';
SetPosition(12, 28, 52, 24);
Text := 'Add';
FontDesc := '#Label1';
Hint := '';
ImageName := '';
TabOrder := 1;
OnClick := @miEditAddClick;
end;
btnEdit := TfpgButton.Create(self);
with btnEdit do
begin
Name := 'btnEdit';
SetPosition(68, 28, 52, 24);
Text := 'Edit';
FontDesc := '#Label1';
Hint := '';
ImageName := '';
TabOrder := 2;
OnClick := @miEditEditClick;
end;
btnDelete := TfpgButton.Create(self);
with btnDelete do
begin
Name := 'btnDelete';
SetPosition(124, 28, 52, 24);
Text := 'Delete';
FontDesc := '#Label1';
Hint := '';
ImageName := '';
TabOrder := 3;
OnClick := @miEditDeleteClick;
end;
MainMenu := TfpgMenuBar.Create(self);
with MainMenu do
begin
Name := 'MainMenu';
SetPosition(0, 0, 540, 24);
Anchors := [anLeft,anRight,anTop];
end;
miFile := TfpgPopupMenu.Create(self);
with miFile do
begin
Name := 'miFile';
SetPosition(344, 136, 120, 20);
AddMenuItem('E&xit', 'Alt+F4', @miFileExit);
end;
miEdit := TfpgPopupMenu.Create(self);
with miEdit do
begin
Name := 'miEdit';
SetPosition(344, 156, 120, 20);
AddMenuItem('Add Contact', '', @miEditAddClick);
AddMenuItem('Edit Contact', '', @miEditEditClick);
AddMenuItem('Delete Contact', '', @miEditDeleteClick);
end;
miSystem := TfpgPopupMenu.Create(self);
with miSystem do
begin
Name := 'miSystem';
SetPosition(344, 176, 120, 20);
AddMenuItem('City List', '', @miSystemCityList);
AddMenuItem('Country List', '', @miSystemCountryList);
AddMenuItem('Address Type List', '', @miSystemAddressTypeList).Enabled := False;
end;
{@VFD_BODY_END: MainForm}
// setup main menu
MainMenu.AddMenuItem('&File', nil).SubMenu := miFile;
MainMenu.AddMenuItem('&Edit', nil).SubMenu := miEdit;
MainMenu.AddMenuItem('&System', nil).SubMenu := miSystem;
end;
procedure TMainForm.AfterConstruction;
begin
inherited AfterConstruction;
SetupMediators;
end;
constructor TMainForm.Create(AOwner: TComponent);
begin
inherited Create(AOwner);
gContactManager.PopulateContacts;
OnShow := @FormShow;
end;
initialization
RegisterFallBackMediators;
gMediatorManager.RegisterMediator(TtiStringGridMediatorView, TContactList);
gMediatorManager.RegisterMediator(TtiListViewMediatorView, TAddressList);
gMediatorManager.RegisterMediator(TtiStringGridMediatorView, TCityList);
gMediatorManager.RegisterMediator(TtiStringGridMediatorView, TCountryList);
gMediatorManager.RegisterMediator(TtiDynamicComboBoxMediatorView, TCity, 'Country');
gMediatorManager.RegisterMediator(TtiDynamicComboBoxMediatorView, TAddressType, 'AddressType');
end.
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