[Properties (by Name)] [Methods (by Name)] [Events (by Name)]
Base class for mediating data between model and view objects
Source position: fpobserver.pp line 58
type TBaseMediator = class(TComponent,IFPObserver) |
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public |
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destructor Destroy; override; |
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Destroys the mediator and cleans up observer attachments |
procedure ObjectToView; |
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Copies data from subject object to view component |
procedure ViewToObject; |
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Copies data from view component to subject object |
class function ViewClass; virtual; |
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Returns the minimum view class this mediator can handle |
class function CompositeMediator; virtual; |
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Indicates whether this is a composite mediator |
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Model object implementing IFPObserved interface |
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View component for data display and editing |
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property Valuelist: TObjectList; [rw] |
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Optional list of values for list-based mediators |
published |
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property SubjectPropertyName: string; [rw] |
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Name of property in subject object to mediate |
property Active: Boolean; [rw] |
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Enables or disables automatic data synchronization |
property ReadOnly: Boolean; [rw] |
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Prevents data transfer from view to subject when True |
property OnViewToObject: TMediatingEvent; [rw] |
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Event triggered when copying data from view to subject |
property OnObjectToView: TMediatingEvent; [rw] |
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Event triggered when copying data from subject to view |
end; |
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Base class for mediating data between model and view objects |
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The TBaseMediator class provides automatic data binding between model objects (subjects) and view components. It implements the observer pattern to automatically synchronize data when either the model or view changes.
The mediator supports bidirectional data binding, read-only modes, and custom data transfer events. Subjects must implement the IFPObserved interface, while views must have published properties that can be accessed by name.
This class serves as the base class for more specialized mediators like list mediators and component mediators, providing common functionality for property validation, observer management, and data transfer coordination.
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Observer pattern helper class implementing IFPObserved interface |
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General-purpose mediator for any TComponent-based view |