MapItemValidationTrigger

API / MapItemValidationTrigger<TKey, TItem> class

Represents a map item validation trigger. Instead of triggering a validation only when the map changes, a validation may be triggered by any of the contained items when they themselves change.

This is useful when within the collection there is a field that needs to be unique, such as a unique name for each item in the collection.

Extends ValidationTrigger<INotifyMapChanged<TKey, TItem> & Iterable<[TKey, TItem]>>.

class MapItemValidationTrigger<TKey, TItem>
    extends ValidationTrigger<INotifyMapChanged<TKey, TItem> | Iterable<[TKey, TItem]>>

Source reference: src/validation/triggers/MapItemValidationTrigger.ts:45.

Generic Parameters

• TKey - The type of keys the map contains.

• TItem - The type of items the map contains.

Constructors

• constructor - Initializes a new instance of the MapItemValidationTrigger<TKey, TItem> class.

Properties

• inherited readonly trigger - Gets the source object that triggers validation.
• inherited readonly validationTriggered - Gets an event that is raised whenever the source object triggers a validation.

Methods

• override protected subscribeToTarget - Subscribes to map and item changes.
• override protected unsubscribeFromTarget - Unsubscribes from map and item changes.

Inheritance Hierarchy

• ValidationTrigger<TTrigger>
  • ViewModelChangedValidationTrigger<TViewModel>
  • CollectionChangedValidationTrigger<TItem, TCollection>
  • CollectionReorderedValidationTrigger<TItem, TCollection>
  • SetChangedValidationTrigger<TItem, TSet>
  • MapChangedValidationTrigger<TKey, TItem, TMap>
  • CollectionItemValidationTrigger<TItem>
  • SetItemValidationTrigger<TItem>
  • MapItemValidationTrigger<TKey, TItem>