Element class abstract

Instantiated element in the widget tree that keeps track of widget updates and state.

Implemented types

• BuildContext

Implementers

• AlignElement
• ColumnElement
• ConstrainedBoxElement
• DecoratedBoxElement
• FlexibleElement
• InheritedElement
• LeafElement
• LeftBorderElement
• PaddingElement
• PositionedElement
• RowElement
• SizedBoxElement
• StackElement
• StatefulElement
• StatelessElement
• TableElement

Constructors

Element(Widget widget)

Creates an element that uses the given widget as its configuration.

Properties

hashCode → int

The hash code for this object.

no setter, inherited

parent ↔ Element?

The parent element in the widget tree.

getter/setter pair

runtimeType → Type

A representation of the runtime type of the object.

no setter, inherited

widget ↔ Widget

The widget that this element represents.

getter/setter pair, override-getter

Methods

dependOnInheritedWidgetOfExactType<T extends InheritedWidget>() → T?

Obtains the nearest inherited widget of the given type T.

override

mount(Element? parent) → void

Adds this element to the tree as a child of parent.

noSuchMethod(Invocation invocation) → dynamic

Invoked when a nonexistent method or property is accessed.

inherited

render(Buffer buffer, Rect area) → void

Renders the underlying widget to the provided buffer within the area.

toString() → String

A string representation of this object.

inherited

unmount() → void

Removes this element from the tree.

update(Widget newWidget) → void

Updates this element to use a new Widget configuration.

visitChildren(void visitor(Element child)) → void

Invokes visitor on each child element of this node.

Operators

operator ==(Object other) → bool

The equality operator.

inherited