Holds opaque meta data in the render tree.
Useful for decorating the render tree with information that will be consumed later. For example, you could store information in the render tree that will be used when the user interacts with the render tree but has no visual impact prior to the interaction.
- Inheritance
Constructors
- MetaData({Key key, metaData, HitTestBehavior behavior: HitTestBehavior.deferToChild, Widget child })
-
Creates a widget that hold opaque meta data.
Properties
- behavior → HitTestBehavior
-
How to behave during hit testing.
read-only - metaData → dynamic
-
Opaque meta data ignored by the render tree
read-only - child → Widget
-
The widget below this widget in the tree.
read-only, inherited - hashCode → int
-
Get a hash code for this object.
read-only, inherited - key → Key
-
Controls how one widget replaces another widget in the tree.
read-only, inherited - runtimeType → Type
-
A representation of the runtime type of the object.
read-only, inherited
Operators
-
operator ==(
other) → bool -
The equality operator.
inherited
Methods
-
createRenderObject(
BuildContext context) → RenderMetaData -
Creates an instance of the
RenderObjectclass that thisRenderObjectWidgetrepresents, using the configuration described by thisRenderObjectWidget. -
debugFillDescription(
List<String> description) → void -
Add additional information to the given description for use by
toString. -
updateRenderObject(
BuildContext context, RenderMetaData renderObject) → void -
Copies the configuration described by this
RenderObjectWidgetto the givenRenderObject, which will be of the same type as returned by this object'screateRenderObject. -
createElement(
) → SingleChildRenderObjectElement -
RenderObjectWidgets always inflate to a
RenderObjectElementsubclass.inherited -
didUnmountRenderObject(
RenderObject renderObject) → void -
A render object previously associated with this widget has been removed from the tree. The given RenderObject will be of the same type as returned by this object's createRenderObject.
inherited -
noSuchMethod(
Invocation invocation) → dynamic -
Invoked when a non-existent method or property is accessed.
inherited -
toString(
) → String -
Returns a string representation of this object.
inherited -
toStringShort(
) → String -
A short, textual description of this widget.
inherited