DropDownMenu class
DropDownMenu component, which internally integrates the buttons and content body of the drop-down menu, and controls the display and hiding of the content body through Overlay.
- Inheritance
-
- Object
- DiagnosticableTree
- Widget
- StatefulWidget
- DropDownMenu
Constructors
-
DropDownMenu.new({Key? key, required DropDownController controller, required List<
DropDownItem> headerItems, required List<DropDownViewProperty> viewBuilders, Offset? viewOffset, Offset? relativeOffset, DropDownDisposeController? disposeController, ScrollPhysics? headerPhysics, DropDownBoxStyle headerBoxStyle = const DropDownBoxStyle(height: 50), DropDownItemStyle headerItemStyle = const DropDownItemStyle(), NullableIndexedWidgetBuilder? headerItemBuilder, IndexedWidgetBuilder? headerDividerBuilder, OnDropDownHeaderItemTap? onHeaderItemTap, OnDropDownItemChanged? onHeaderItemChanged, OnDropDownExpandStateChanged? onExpandStateChanged, Color? viewColor = Colors.white, Color? maskColor, bool maskVisible = true, bool maskFullScreen = true, Duration animationDuration = const Duration(milliseconds: 150)}) -
const
Properties
- animationDuration → Duration
-
Animation duration of the drop-down menu body component
final
- controller → DropDownController
-
Controller of the drop-down menu
final
- disposeController → DropDownDisposeController?
-
The destruction controller of the drop-down menu, used to close the drop-down menu in advance when the page is destroyed
final
- hashCode → int
-
The hash code for this object.
no setterinherited
- headerBoxStyle → DropDownBoxStyle
-
Style of the drop-down menu header component
final
- headerDividerBuilder → IndexedWidgetBuilder?
-
Builder of the dividing line between the children of the drop-down menu header component, used to customize the dividing line
final
- headerItemBuilder → NullableIndexedWidgetBuilder?
-
Builder for the sub-items of the drop-down menu header component, used to customize Item
final
-
headerItems
→ List<
DropDownItem> -
Data of the drop-down menu header component
final
- headerItemStyle → DropDownItemStyle
-
Style of the drop-down menu header item
final
- headerPhysics → ScrollPhysics?
-
Whether the drop-down menu header is scrollable
final
- key → Key?
-
Controls how one widget replaces another widget in the tree.
finalinherited
- maskColor → Color?
-
Color of the mask layer in body component of the drop-down menu
final
- maskFullScreen → bool
-
Whether the mask layer cover full screen
final
- maskVisible → bool
-
Whether the mask layer is visible
final
- onExpandStateChanged → OnDropDownExpandStateChanged?
-
The expansion state change event of the drop-down menu
final
- onHeaderItemChanged → OnDropDownItemChanged?
-
The selected state change event of the child item of the drop-down menu header component
final
- onHeaderItemTap → OnDropDownHeaderItemTap?
-
Click event of the child item of the drop-down menu header component
final
- relativeOffset → Offset?
-
offset of the drop-down menu body component relative to the header
final
- runtimeType → Type
-
A representation of the runtime type of the object.
no setterinherited
-
viewBuilders
→ List<
DropDownViewProperty> -
Data of the body component of the drop-down menu
final
- viewColor → Color?
-
Background color of the drop-down menu body component
final
- viewOffset → Offset?
-
offset of the drop-down menu body component
final
Methods
-
createElement(
) → StatefulElement -
Creates a StatefulElement to manage this widget's location in the tree.
inherited
-
createState(
) → State< DropDownMenu> -
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, 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