DropdownButtonHideUnderline class Null safety
An inherited widget that causes any descendant DropdownButton widgets to not include their regular underline.
This is used by DataTable to remove the underline from any DropdownButton widgets placed within material data tables, as required by the Material Design specification.
- Inheritance
-
- Object
- DiagnosticableTree
- Widget
- ProxyWidget
- InheritedWidget
- DropdownButtonHideUnderline
Constructors
- DropdownButtonHideUnderline({Key? key, required Widget child})
-
Creates a DropdownButtonHideUnderline. A non-null child must
be given.
const
Properties
Methods
-
createElement(
) → InheritedElement -
Inflates this configuration to a concrete instance.
inherited
-
debugDescribeChildren(
) → List< DiagnosticsNode> -
Returns a list of
DiagnosticsNode
objects describing this node's children.protected">@protectedinherited -
debugFillProperties(
DiagnosticPropertiesBuilder properties) → void -
Add additional properties associated with the node.
inherited
-
noSuchMethod(
Invocation invocation) → dynamic -
Invoked when a non-existent 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}) → 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
-
updateShouldNotify(
covariant DropdownButtonHideUnderline oldWidget) → bool -
Whether the framework should notify widgets that inherit from this widget.
override
Operators
-
operator ==(
Object other) → bool -
The equality operator.
nonVirtual">@nonVirtualinherited
Static Methods
-
at(
BuildContext context) → bool - Returns whether the underline of DropdownButton widgets should be hidden.