ElLayoutBuilder class
对 LayoutBuilder 进行封装,该小部件可以更高效地监听尺寸变化
- Inheritance
-
- Object
- DiagnosticableTree
- Widget
- StatefulWidget
- ElLayoutBuilder
- Available extensions
Constructors
-
ElLayoutBuilder({Key? key, required WidgetBuilder builder, ValueChanged<
Size> ? onInit, ValueChanged<Size> ? onChanged}) -
const
Properties
- builder → WidgetBuilder
-
final
- hashCode → int
-
The hash code for this object.
no setterinherited
- key → Key?
-
Controls how one widget replaces another widget in the tree.
finalinherited
-
onChanged
→ ValueChanged<
Size> ? -
当布局约束发生变更时,将会触发更新事件
final
-
onInit
→ ValueChanged<
Size> ? -
首次布局时初始化的尺寸
final
- runtimeType → Type
-
A representation of the runtime type of the object.
no setterinherited
Methods
-
createElement(
) → StatefulElement -
Creates a StatefulElement to manage this widget's location in the tree.
inherited
-
createState(
) → State< ElLayoutBuilder> -
Creates the mutable state for this widget at a given location in the tree.
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
-
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
Operators
-
operator ==(
Object other) → bool -
The equality operator.
inherited
Static Methods
-
of(
BuildContext context) → ElLayoutBuilderState - 访问祖先 State 对象