CNPullDownButtonAnchor class

A Cupertino-native pull-down button with automatic menu anchoring.

This creates a popup menu that appears anchored to the button, similar to UIMenu with automatic presentation. The menu appears near the button with an arrow pointing to it.

On iOS/macOS this uses native UIButton with UIMenu for authentic behavior. The menu presentation style is set to automatic, allowing the system to choose the best presentation (typically a popover-style menu).

Inheritance

Constructors

CNPullDownButtonAnchor({Key? key, required String? buttonLabel, required List<CNPullDownMenuEntry> items, required ValueChanged<int> onSelected, Color? tint, double height = 44.0, double? width, CNButtonStyle buttonStyle = CNButtonStyle.plain, String? menuTitle, Alignment alignment = Alignment.center})
Creates a text-labeled pull-down button with automatic anchoring.
const
CNPullDownButtonAnchor.icon({Key? key, required CNSymbol? buttonIcon, required List<CNPullDownMenuEntry> items, required ValueChanged<int> onSelected, Color? tint, double size = 44.0, CNButtonStyle buttonStyle = CNButtonStyle.glass, String? menuTitle, Alignment alignment = Alignment.center})
Creates a round, icon-only pull-down button with automatic anchoring.
const

Properties

alignment → Alignment
Alignment of the button content.
final
buttonIcon → CNSymbol?
Icon for the button (non-null in icon mode).
final
buttonLabel → String?
Text for the button (null when using buttonIcon).
final
buttonStyle → CNButtonStyle
Visual style to apply to the button.
final
hashCode → int
The hash code for this object.
no setterinherited
height → double
Control height; icon mode uses diameter semantics.
final
isIconButton → bool
Whether this instance is configured as an icon button variant.
no setter
items → List<CNPullDownMenuEntry>
Entries that populate the pull-down menu.
final
key → Key?
Controls how one widget replaces another widget in the tree.
finalinherited
Optional title for the menu.
final
onSelected → ValueChanged<int>
Called with the selected index when the user makes a selection.
final
round → bool
Whether this is the round icon variant.
final
runtimeType → Type
A representation of the runtime type of the object.
no setterinherited
tint → Color?
Tint color for the control.
final
width → double?
Fixed width; if null, uses intrinsic width.
final

Methods

createElement() → StatefulElement
Creates a StatefulElement to manage this widget's location in the tree.
inherited
createState() → State<CNPullDownButtonAnchor>
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