ProxyAnimation class Null safety
An animation that is a proxy for another animation.
A proxy animation is useful because the parent animation can be mutated. For example, one object can create a proxy animation, hand the proxy to another object, and then later change the animation from which the proxy receives its value.
- Inheritance
-
- Object
- Listenable
- Animation<
double> - ProxyAnimation
- Mixed in types
Constructors
-
ProxyAnimation([Animation<
double> ? animation]) - Creates a proxy animation.
Properties
- hashCode → int
-
The hash code for this object.
read-onlyinherited
- isCompleted → bool
-
Whether this animation is stopped at the end.
read-onlyinherited
- isDismissed → bool
-
Whether this animation is stopped at the beginning.
read-onlyinherited
- isListening → bool
-
Whether there are any listeners.
read-onlyinherited
-
parent
↔ Animation<
double> ? -
The animation whose value this animation will proxy.
read / write
- runtimeType → Type
-
A representation of the runtime type of the object.
read-onlyinherited
- status → AnimationStatus
-
The current status of this animation.
read-onlyoverride
- value → double
-
The current value of the animation.
read-onlyoverride
Methods
-
addListener(
VoidCallback listener) → void -
Calls the listener every time the value of the animation changes.
inherited
-
addStatusListener(
AnimationStatusListener listener) → void -
Calls listener every time the status of the animation changes.
inherited
-
clearListeners(
) → void -
Removes all listeners added with addListener.
protected">@protectedinherited
-
clearStatusListeners(
) → void -
Removes all listeners added with addStatusListener.
protected">@protectedinherited
-
didRegisterListener(
) → void -
Calls didStartListening every time a registration of a listener causes
an empty list of listeners to become non-empty.
protected">@protectedinherited
-
didStartListening(
) → void -
Called when the number of listeners changes from zero to one.
override
-
didStopListening(
) → void -
Called when the number of listeners changes from one to zero.
override
-
didUnregisterListener(
) → void -
Calls didStopListening when an only remaining listener is unregistered,
thus making the list empty.
protected">@protectedinherited
-
drive<
U> (Animatable< U> child) → Animation<U> -
Chains a Tween (or CurveTween) to this Animation.
optionalTypeArgs">@optionalTypeArgsinherited
-
noSuchMethod(
Invocation invocation) → dynamic -
Invoked when a non-existent method or property is accessed.
inherited
-
notifyListeners(
) → void -
Calls all the listeners.
protected">@protectedinherited
-
notifyStatusListeners(
AnimationStatus status) → void -
Calls all the status listeners.
protected">@protectedinherited
-
removeListener(
VoidCallback listener) → void -
Stop calling the listener every time the value of the animation changes.
inherited
-
removeStatusListener(
AnimationStatusListener listener) → void -
Stops calling the listener every time the status of the animation changes.
inherited
-
toString(
) → String -
A string representation of this object.
override
-
toStringDetails(
) → String -
Provides a string describing the status of this object, but not including
information about the object itself.
inherited
Operators
-
operator ==(
Object other) → bool -
The equality operator.
inherited