ElSecondChildWidget class
与 SingleChildRenderObjectWidget 类似,不过它还支持渲染第二个 Widget 子组件
- Inheritance
-
- Object
- DiagnosticableTree
- Widget
- RenderObjectWidget
- ElSecondChildWidget
- Available extensions
Constructors
- ElSecondChildWidget({Key? key, bool? sizedByParent, required Widget child, Widget? secondChild})
-
const
Properties
- child → Widget
-
代理子组件
final
- hashCode → int
-
The hash code for this object.
no setterinherited
- key → Key?
-
Controls how one widget replaces another widget in the tree.
finalinherited
- runtimeType → Type
-
A representation of the runtime type of the object.
no setterinherited
- secondChild → Widget?
-
渲染在 child 之上的第二个子组件,它注入给后代的约束会强制与 child 一样大
final
- sizedByParent → bool?
-
强制布局尺寸跟随父元素,默认情况下,当 child 不为 null 则尺寸跟随子组件,若为 null 则也跟随父元素
final
Methods
-
createElement(
) → RenderObjectElement -
RenderObjectWidgets always inflate to a RenderObjectElement subclass.
override
-
createRenderObject(
BuildContext context) → ElRenderSecondChildBox -
Creates an instance of the RenderObject class that this
RenderObjectWidget represents, using the configuration described by this
RenderObjectWidget.
override
-
debugDescribeChildren(
) → List< DiagnosticsNode> -
Returns a list of DiagnosticsNode objects describing this node's
children.
inherited
-
debugFillProperties(
DiagnosticPropertiesBuilder properties) → void -
Add additional properties associated with the node.
inherited
-
didUnmountRenderObject(
covariant RenderObject renderObject) → void -
This method is called when a RenderObject that was previously
associated with this widget is removed from the render tree.
The provided RenderObject will be of the same type as the one created by
this widget's createRenderObject method.
inherited
-
noScrollbarBehavior(
BuildContext context, {Key? key, bool? overscroll, bool enabled = true}) → Widget -
Available on Widget, provided by the FlutterWidgetExt extension
不使用祖先提供的默认滚动条,当使用自定义滚动条时请添加此扩展方法,防止与祖先提供的默认滚动条重叠 -
noSuchMethod(
Invocation invocation) → dynamic -
Invoked when a nonexistent method or property is accessed.
inherited
-
toDiagnosticsNode(
{String? name, DiagnosticsTreeStyle? style}) → DiagnosticsNode -
Returns a debug representation of the object that is used by debugging
tools and by DiagnosticsNode.toStringDeep.
inherited
-
toString(
{DiagnosticLevel minLevel = DiagnosticLevel.info}) → String -
A string representation of this object.
inherited
-
toStringDeep(
{String prefixLineOne = '', String? prefixOtherLines, DiagnosticLevel minLevel = DiagnosticLevel.debug, int wrapWidth = 65}) → String -
Returns a string representation of this node and its descendants.
inherited
-
toStringShallow(
{String joiner = ', ', DiagnosticLevel minLevel = DiagnosticLevel.debug}) → String -
Returns a one-line detailed description of the object.
inherited
-
toStringShort(
) → String -
A short, textual description of this widget.
inherited
-
updateRenderObject(
BuildContext context, covariant ElRenderSecondChildBox renderObject) → void -
Copies the configuration described by this RenderObjectWidget to the
given RenderObject, which will be of the same type as returned by this
object's createRenderObject.
override
Operators
-
operator ==(
Object other) → bool -
The equality operator.
inherited