ButtonNavigationItem class

A ButtonNavigationItem represents one button in the menu bar. Should be inserted in ButtonNavigationBar.children.

Constructors

ButtonNavigationItem({String? label, Icon? icon, Color? color, double height = 48, double width = 72, required VoidCallback? onPressed})
ButtonNavigationItem.expandable({String? label, Icon? icon, Color? color, double height = 48, double width = 72, required List<Widget>? children, ButtonNavigationItem? collapseButton, double expandableSpacing = 50.0, double verticalOffset = 50.0})

Properties

children → List<Widget>?
children are the expanding widgets in a ButtonNavigationItem.expandable
final
collapseButton → ButtonNavigationItem?
collapseButton allows to customize the button which collapses the expanded buttons again. onPressed of a widget is always overwritten when using it here. Only for ButtonNavigationItem.expandable.
final
color → Color?
color sets the color of the button. Buttons in the same menu can have different colors.
final
expandableSpacing → double
expandableSpacing can be used to define the spacing between the expandable buttons. Only for ButtonNavigationItem.expandable.
final
hashCode → int
The hash code for this object.
no setterinherited
height → double
height and width set the dimensions of the button. If left emtpy, height is 48 and with 72.
final
icon → Icon?
icon displays a passed Icon of the label text.
final
label → String?
The label is the text displayed on the button. If empty, no text is displayed on the button.
final
onPressed → VoidCallback?
onPressed sets the action of the button when pressed.
final
runtimeType → Type
A representation of the runtime type of the object.
no setterinherited
verticalOffset → double
verticalOffset can be used to define the spacing between the ButtonNavigationItem and the first expandable Item. Only for ButtonNavigationItem.expandable.
final
width → double
height and width set the dimensions of the button. If left emtpy, height is 48 and with 72.
final

Methods

noSuchMethod(Invocation invocation) → dynamic
Invoked when a nonexistent method or property is accessed.
inherited
toString() → String
A string representation of this object.
inherited

Operators

operator ==(Object other) → bool
The equality operator.
inherited