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unit basic_intf;
{$mode objfpc}{$H+}
interface
type
// forward declarations
ISubject = interface;
IMVPView = interface;
ICommandMenuItem = interface;
IString = interface;
// event types
TSelectStringEvent = procedure(const AString: IString) of object;
IObserver = interface(IInterface)
['{16CD208B-5F37-41FC-82A4-BFDD16DB3203}']
procedure Update(const ASubject: IInterface);
end;
ISubject = interface(IInterface)
['{004B3299-C221-4A44-87A7-7657D90B6493}']
procedure Attach(Observer: IObserver);
procedure Detach(Observer: IObserver);
procedure Notify;
procedure BeginUpdate;
procedure EndUpdate;
end;
IVisitor = interface(IInterface)
['{35E154D2-6573-42DA-9854-156F3B19C95F}']
// empty interface
end;
IVisited = interface(IInterface)
['{7CF62F51-9412-445C-9E8C-DE94F2B1E280}']
procedure Accept(const Visitor: IVisitor);
end;
IListModel = interface(IInterface)
['{1A772375-1263-4790-8827-F7BEA358674A}']
function GetCount: Integer;
function GetItem(Idx: Integer): IInterface;
procedure Add(const Item: IInterface);
procedure Clear;
function IndexOf(const Item: IInterface): Integer;
procedure Insert(const Item, Before: IInterface);
procedure Move(const Item, Before: IInterface);
procedure Remove(const Item: IInterface);
property Count: Integer read GetCount;
property Item[Idx: Integer]: IInterface read GetItem;
end;
(*
IController = interface(IInterface)
['{4A99C01A-D025-4562-8E94-3A0C873CE894}']
function GetModel: IModel;
function GetView: IView;
procedure SetModel(const AValue: IModel);
procedure SetView(const AValue: IView);
property Model: IModel read GetModel write SetModel;
property View: IView read GetView write SetView;
end;
*)
IString = interface(IInterface)
['{E76984A4-1287-4353-8370-A7332B9FB1CB}']
function GetAsString: string;
procedure SetAsString(const AValue: string);
property AsString: string read GetAsString write SetAsString;
end;
IStringListModel = interface(IListModel)
['{769804CD-89E4-43C7-B8EF-783BFE27214E}']
function GetItem(Idx: Integer): IString; overload;
property Item[Idx: Integer]: IString read GetItem;
end;
ISelection = interface(IInterface)
['{F4DDA0EA-E982-4785-8602-5B32E8DD6DA2}']
procedure AddItem(const Item: IInterface);
procedure Clear;
function GetCount: integer;
procedure RemoveItem(const Item: IInterface);
property Count: integer read GetCount;
end;
ICommand = interface(IInterface)
['{B333C7E1-B124-4D08-A640-DC02F36264C7}']
procedure BindSelection(const Selection: ISelection);
function Execute: Boolean;
function GetEnabled: Boolean;
function GetText: string;
property Enabled: Boolean read GetEnabled;
property Text: string read GetText;
end;
ICommandSet = interface(IInterface)
['{1622FF69-3104-47EA-8741-9C1B05ADA30B}']
// empty interface
end;
ICommandVisitor = interface(IVisitor)
['{628B3A4A-30D1-48D3-8B46-090F08AD2AC8}']
procedure VisitComand(const Command: ICommand);
end;
ICommandMenu = interface(IInterface)
['{3C666D8F-6BED-454B-8BFE-28422943B300}']
function AddItem(const Caption: string; Enabled: Boolean): ICommandMenuItem;
end;
ICommandMenuItem = interface(IInterface)
['{7DFCF2BD-70DA-4DAC-B8D5-C6FB882267CF}']
function GetCaption: string;
function GetChecked: Boolean;
function GetCommand: ICommand;
procedure SetCaption(const AValue: string);
procedure SetChecked(const AValue: Boolean);
procedure SetCommand(const AValue: ICommand);
property Caption: string read GetCaption write SetCaption;
property Checked: Boolean read GetChecked write SetChecked;
property Command: ICommand read GetCommand write SetCommand;
end;
IStringVisitor = interface(IVisitor)
['{DA12355F-0727-41B3-9080-DDAF20797FC5}']
function GetTheString: IString;
procedure VisitString(const Str: IString);
property TheString: IString
read GetTheString;
end;
IMVPModel = interface(IInterface)
['{85223140-B263-4413-89E3-BFA37E9D3112}']
function GetCommandSet: ICommandSet;
function GetCurrentSelection: ISelection;
property CommandSet: ICommandSet read GetCommandSet;
property CurrentSelection: ISelection read GetCurrentSelection;
end;
IMVPPresenter = interface(IInterface)
['{5B8477DA-A006-4DE1-B304-9512BFAD7507}']
function GetCommandMenu: ICommandMenu;
function GetModel: IMVPModel;
function GetView: IMVPView;
procedure SetCommandMenu(const AValue: ICommandMenu);
procedure SetModel(const AValue: IMVPModel);
procedure SetView(const AValue: IMVPView);
property CommandMenu: ICommandMenu read GetCommandMenu write SetCommandMenu;
property Model: IMVPModel read GetModel write SetModel;
property View: IMVPView read GetView write SetView;
end;
IMVPView = interface(IInterface)
['{2C575FE7-BACD-46EC-9D72-AEDA44836B20}']
procedure AdoptCommandMenu(const Value: ICommandMenu);
procedure OrphanCommandMenu(const Value: ICommandMenu);
end;
IStringListView = interface(IMVPView)
['{D834710A-9C1A-42D1-A29B-7F9F8FB46426}']
function GetOnSelectString: TSelectStringEvent;
procedure SetOnSelectString(const AValue: TSelectStringEvent);
property OnSelectString: TSelectStringEvent read GetOnSelectString write SetOnSelectString;
end;
IStringMoveVisitor = interface(IStringVisitor)
['{DB89C96F-DA90-43ED-A621-51B70E6C600E}']
function GetCanDemote: Boolean;
function GetCanPromote: Boolean;
property CanDemote: Boolean read GetCanDemote;
property CanPromote: Boolean read GetCanPromote;
end;
implementation
end.
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