ObserverComponent class abstract

Base class for components that observes the build execution of it's descendants in the Component tree.

See also:

  • StatefulComponent and State, for components that can build differently several times over their lifetime.
  • StatelessComponent, for components that always build the same way given a particular configuration and ambient state.
  • InheritedComponent, for components that introduce ambient state that can be read by descendant components.
  • Component, for an overview of components in general.
Inheritance

Constructors

ObserverComponent({required Component child, Key? key})
Abstract constant constructor with the child which will be below this in the tree.
const

Properties

child → Component
The component below this component in the tree.
final
hashCode → int
The hash code for this object.
no setterinherited
key → Key?
Controls how one component replaces another component in the tree.
finalinherited
runtimeType → Type
A representation of the runtime type of the object.
no setterinherited

Methods

createElement() → ObserverElement
Inflates this configuration to a concrete instance.
override
noSuchMethod(Invocation invocation) → dynamic
Invoked when a nonexistent method or property is accessed.
inherited
toString() → String
A string representation of this object.
inherited

Operators

operator ==(Object other) → bool
The equality operator.
inherited