DropdownTreeMenu<T, E> class

This widget is just like this: ----------------|--------------------- MainItem1 |SubItem1 MainItem2 |SubItem2

MainItem3	SubItem3
When you tap "MainItem1", the sub list of this widget will

Inheritance

Constructors

DropdownTreeMenu({Key? key, required List<T> data, double? itemExtent, int? selectedIndex, required MenuItemBuilder<T> itemBuilder, double? subItemExtent, required MenuItemBuilder<E> subItemBuilder, required GetSubData<T, E> getSubData, Color? background = const Color(0xfffafafa), Color? subBackground, int flex = 1, int subFlex = 2, int? subSelectedIndex, MenuTreeOnTap? menuTreeOnTap}): const

background → Color?: background for main list
final
controller → DropdownMenuController?: finalinherited
data → List<T>: data from this widget
final
flex → int: flex for main list
final
getSubData → GetSubData<T, E>: A callback to get sub list from left list data, eg. When you set List
final
hashCode → int: The hash code for this object.
no setterinherited
itemBuilder → MenuItemBuilder<T>: item builder for main list
final
itemExtent → double?: itemExtent of main list
final
key → Key?: Controls how one widget replaces another widget in the tree.
finalinherited
menuTreeOnTap → MenuTreeOnTap?: final
runtimeType → Type: A representation of the runtime type of the object.
no setterinherited
selectedIndex → int?: selected index of main list
final
subBackground → Color?: background for sub list
final
subFlex → int: flex for sub list, if subFlex==2 and flex==1,then sub list will be 2 times larger than main list
final
subItemBuilder → MenuItemBuilder<E>: A function to build right item of the tree
final
subItemExtent → double?: itemExtent of sub list
final
subSelectedIndex → int?: final

createElement() → StatefulElement: Creates a StatefulElement to manage this widget's location in the tree.
inherited
createState() → DropdownState<DropdownWidget>: 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
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}) → 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