$BuildContext class - widgets library

Constructors

$BuildContext.wrap(BuildContext $value): const

Properties

$reified → BuildContext: Fully reify the underlying value so it can be used in a Dart context. For example, recursively transform collections into their underlying $values.
no setter
$value → BuildContext: The backing Dart value of this $Value.
final
debugDoingBuild → bool: Whether the widget is currently updating the widget or render tree.
no setteroverride
hashCode → int: The hash code for this object.
no setterinherited
mounted → bool: Whether the Widget this context is associated with is currently mounted in the widget tree.
no setteroverride
owner → BuildOwner?: The BuildOwner for this context. The BuildOwner is in charge of managing the rendering pipeline for this context.
no setteroverride
runtimeType → Type: A representation of the runtime type of the object.
no setterinherited
size → Size?: The size of the RenderBox returned by findRenderObject.
no setteroverride
widget → Widget: The current configuration of the Element that is this BuildContext.
no setteroverride

Methods

$getProperty(Runtime runtime, String identifier) → $Value?: Get a property by identifier on this instance
$getRuntimeType(Runtime runtime) → int: Index of the class Type in the runtime dictionary. By definition can change from run to run, so it's customary to use Runtime.lookupType in implementations.
$setProperty(Runtime runtime, String identifier, $Value value) → void: Set a property by identifier on this instance to value
dependOnInheritedElement(InheritedElement ancestor, {Object? aspect}) → InheritedWidget: Registers this build context with ancestor such that when ancestor's widget changes this build context is rebuilt.
override
dependOnInheritedWidgetOfExactType<T extends InheritedWidget>({Object? aspect}) → T?: Returns the nearest widget of the given type T and creates a dependency on it, or null if no appropriate widget is found.
override
describeElement(String name, {DiagnosticsTreeStyle style = DiagnosticsTreeStyle.errorProperty}) → DiagnosticsNode: Returns a description of the Element associated with the current build context.
override
describeMissingAncestor({required Type expectedAncestorType}) → List<DiagnosticsNode>: Adds a description of a specific type of widget missing from the current build context's ancestry tree.
override
describeOwnershipChain(String name) → DiagnosticsNode: Adds a description of the ownership chain from a specific Element to the error report.
override
describeWidget(String name, {DiagnosticsTreeStyle style = DiagnosticsTreeStyle.errorProperty}) → DiagnosticsNode: Returns a description of the Widget associated with the current build context.
override
dispatchNotification(Notification notification) → void: Start bubbling this notification at the given build context.
override
findAncestorRenderObjectOfType<T extends RenderObject>() → T?: Returns the RenderObject object of the nearest ancestor RenderObjectWidget widget that is an instance of the given type T.
override
findAncestorStateOfType<T extends State<StatefulWidget>>() → T?: Returns the State object of the nearest ancestor StatefulWidget widget that is an instance of the given type T.
override
findAncestorWidgetOfExactType<T extends Widget>() → T?: Returns the nearest ancestor widget of the given type T, which must be the type of a concrete Widget subclass.
override
findRenderObject() → RenderObject?: The current RenderObject for the widget. If the widget is a RenderObjectWidget, this is the render object that the widget created for itself. Otherwise, it is the render object of the first descendant RenderObjectWidget.
override
findRootAncestorStateOfType<T extends State<StatefulWidget>>() → T?: Returns the State object of the furthest ancestor StatefulWidget widget that is an instance of the given type T.
override
getElementForInheritedWidgetOfExactType<T extends InheritedWidget>() → InheritedElement?: Obtains the element corresponding to the nearest widget of the given type T, which must be the type of a concrete InheritedWidget subclass.
override
getInheritedWidgetOfExactType<T extends InheritedWidget>() → T?: Returns the nearest widget of the given InheritedWidget subclass T or null if an appropriate ancestor is not found.
override
noSuchMethod(Invocation invocation) → dynamic: Invoked when a nonexistent method or property is accessed.
inherited
toString() → String: A string representation of this object.
inherited
visitAncestorElements(bool visitor(Element element)) → void: Walks the ancestor chain, starting with the parent of this build context's widget, invoking the argument for each ancestor.
override
visitChildElements(ElementVisitor visitor) → void: Walks the children of this widget.
override

Operators

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

Constants

$declaration → const BridgeClassDef: Compile-time bridge declaration for $BuildContext
$type → const BridgeTypeRef: Compile-time type reference for $BuildContext