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| ///////////////////////////////////////////////////////////////////////////
// //
// Copyright (c) 2015 by Charta Software B.V. //
// All rights reserved //
// //
// Version: 1.7.0.83525 //
// Web site: https://pascal.chartasoftware.com/ //
// //
// This code and information are provided "as is" without warranty of //
// any kind. Dissemination of this information or reproduction of //
// this material is strictly forbidden unless prior written permission //
// is obtained from Charta Software B.V.. //
// //
///////////////////////////////////////////////////////////////////////////
unit Object_.Base;
interface
uses
Boolean,
Event,
Query,
Text;
type
TBaseObjectClass = class of TBaseObject;
TBaseObject = class(TObject)
public
constructor Create(); virtual;
function ToText(): TText; overload; virtual;
function Equals(Object_: TBaseObject): TBoolean; reintroduce; virtual;
function HandleEvent(Event: TEvent): TBoolean; virtual;
function Query(Query: TQuery): TObject; virtual;
public
class function ToText(Object_: TObject): TText; overload;
class function EqualObjects(Left: TObject; Right: TObject): TBoolean;
end;
implementation
uses
Object_.Query.WithClass,
Query.Condition;
{ TBaseObject }
constructor TBaseObject.Create();
begin
inherited Create();
end;
class function TBaseObject.EqualObjects(Left: TObject; Right: TObject): TBoolean;
begin
Result :=
(Left = Right)
or ((Left is TBaseObject) and (Right is TBaseObject) and ((Left as TBaseObject).Equals(Right as TBaseObject)));
end;
function TBaseObject.Equals(Object_: TBaseObject): TBoolean;
begin
Result := Self = Object_;
end;
function TBaseObject.HandleEvent(Event: TEvent): TBoolean;
begin
Result := False;
end;
function TBaseObject.Query(Query: TQuery): TObject;
begin
if (Query is TConditionQuery) and (Query as TConditionQuery).Condition.Matches(Self) then
Result := Self
else if (Query is TGetObjectWithClass) and (Self is (Query as TGetObjectWithClass).Class_) then
Result := Self
else
Result := nil;
end;
function TBaseObject.ToText(): TText;
begin
Result := ClassName;
end;
class function TBaseObject.ToText(Object_: TObject): TText;
begin
if Object_ is TBaseObject then
Result := (Object_ as TBaseObject).ToText()
else if Object_ <> nil then
Result := Object_.ClassName
else
Result := 'Unknown';
end;
end.
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