Class TOrderedItem

DescriptionHierarchyFieldsMethodsProperties

Unit

OrderedCollectionUnit

Declaration

type TOrderedItem = class(TCollectionItem)

Description

TOrderedItem is designed to allow TOrderedCollection to identify changed and new items during TOrderedCollection.Assign.

Hierarchy

Overview

Fields

Private FForeignId: integer;
Private FAlwaysAssignForeignId: boolean;
Private FInsertionNeeded: boolean;

Methods

Protected function Model: TBaseModel;
Protected function IsSame(AnotherItem: TOrderedItem): boolean; virtual; abstract;
Protected procedure InvalidateModel; virtual;
Protected procedure SetBooleanProperty(var AField: boolean; const NewValue: boolean);
Protected procedure SetIntegerProperty(var AField: Integer; const NewValue: Integer);
Protected procedure SetRealProperty(var AField: double; const NewValue: double);
Protected procedure SetCaseSensitiveStringProperty(var AField: string; const NewValue: string);
Protected procedure SetCaseInsensitiveStringProperty(var AField: string; NewValue: string);
Public procedure Assign(Source: TPersistent); override;
Public constructor Create(Collection: TCollection); override;

Properties

Protected property AlwaysAssignForeignId: boolean read FAlwaysAssignForeignId write FAlwaysAssignForeignId;

Description

Fields

Private FForeignId: integer;

FForeignId is the ID of a TOrderedItem that has been assigned to this TOrderedItem. If no TOrderedItem has been assigned to it, FForeignId is -1.

Private FAlwaysAssignForeignId: boolean;

See AlwaysAssignForeignId.

Private FInsertionNeeded: boolean;
 

Methods

Protected function Model: TBaseModel;
 
Protected function IsSame(AnotherItem: TOrderedItem): boolean; virtual; abstract;

IsSame tests whether another TOrderedItem is identical to the current one.

Protected procedure InvalidateModel; virtual;

InvalidateModel invalidates the model.

See also
InvalidateModel
InvalidateModel invalidates the model.
Invalidate
Call Invalidate to indicate that the model has changed in some important respect.
Protected procedure SetBooleanProperty(var AField: boolean; const NewValue: boolean);
 
Protected procedure SetIntegerProperty(var AField: Integer; const NewValue: Integer);
 
Protected procedure SetRealProperty(var AField: double; const NewValue: double);
 
Protected procedure SetCaseSensitiveStringProperty(var AField: string; const NewValue: string);
 
Protected procedure SetCaseInsensitiveStringProperty(var AField: string; NewValue: string);
 
Public procedure Assign(Source: TPersistent); override;

Assign copies Source to the current TOrderedItem. It will also assign FForeignId if AlwaysAssignForeignId is True or IsSame returns False.

Public constructor Create(Collection: TCollection); override;

Create creates and instance of TOrderedItem and sets FForeignId to -1.

Properties

Protected property AlwaysAssignForeignId: boolean read FAlwaysAssignForeignId write FAlwaysAssignForeignId;

if AlwaysAssignForeignId is True, FForeignId will always be assigned during Assign. Otherwise, FForeignId will only be assigned if IsSame returns False. AlwaysAssignForeignId is set to True in TModflowParamItem and TGlobalVariableItem.

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