ClipboardStatusNotifier class Null safety

A ValueNotifier whose value indicates whether the current contents of the clipboard can be pasted.

The contents of the clipboard can only be read asynchronously, via Clipboard.getData, so this maintains a value that can be used synchronously. Call update to asynchronously update value if needed.

Inheritance
Mixed in types

Constructors

ClipboardStatusNotifier({ClipboardStatus value = ClipboardStatus.unknown})
Create a new ClipboardStatusNotifier.

Properties

disposed → bool
True if this instance has been disposed.
read-only
hashCode → int
The hash code for this object.
read-onlyinherited
hasListeners → bool
Whether any listeners are currently registered.
protected">@protectedread-onlyinherited
runtimeType → Type
A representation of the runtime type of the object.
read-onlyinherited
value ↔ ClipboardStatus
The current value stored in this notifier.
read / writeinherited

Methods

addListener(VoidCallback listener) → void
Register a closure to be called when the object changes.
override
didChangeAccessibilityFeatures() → void
Called when the system changes the set of currently active accessibility features.
inherited
didChangeAppLifecycleState(AppLifecycleState state) → void
Called when the system puts the app in the background or returns the app to the foreground.
override
didChangeLocales(List<Locale>? locales) → void
Called when the system tells the app that the user's locale has changed. For example, if the user changes the system language settings.
inherited
didChangeMetrics() → void
Called when the application's dimensions change. For example, when a phone is rotated.
inherited
didChangePlatformBrightness() → void
Called when the platform brightness changes.
inherited
didChangeTextScaleFactor() → void
Called when the platform's text scale factor changes.
inherited
didHaveMemoryPressure() → void
Called when the system is running low on memory.
inherited
didPopRoute() → Future<bool>
Called when the system tells the app to pop the current route. For example, on Android, this is called when the user presses the back button.
inherited
didPushRoute(String route) → Future<bool>
Called when the host tells the application to push a new route onto the navigator.
inherited
didPushRouteInformation(RouteInformation routeInformation) → Future<bool>
Called when the host tells the application to push a new RouteInformation and a restoration state onto the router.
inherited
dispose() → void
Discards any resources used by the object. After this is called, the object is not in a usable state and should be discarded (calls to addListener will throw after the object is disposed).
override
noSuchMethod(Invocation invocation) → dynamic
Invoked when a non-existent method or property is accessed.
inherited
notifyListeners() → void
Call all the registered listeners.
protected">@protectedvisibleForTesting">@visibleForTestinginherited
removeListener(VoidCallback listener) → void
Remove a previously registered closure from the list of closures that are notified when the object changes.
override
toString() → String
A string representation of this object.
inherited
update() → Future<void>
Check the Clipboard and update value if needed.

Operators

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