A widget representing a rotating expand/collapse button. The icon rotates 180 deg when pressed, then reverts the animation on a second press. The underlying icon is Icons.expand_more.

See IconButton for a more general implementation of a pressable button with an icon.

Inheritance

Constructors

ExpandIcon({Key key, bool isExpanded: false, double size: 24.0, @required ValueChanged<bool> onPressed, EdgeInsets padding: const EdgeInsets.all(8.0) })

Creates an ExpandIcon with the given padding, and a callback that is triggered when the icon is pressed.

Properties

isExpanded → bool

Whether the icon is in an expanded state.

read-only
onPressed → ValueChanged<bool>

The callback triggered when the icon is pressed and the state changes between expanded and collapsed. The value passed to the current state.

read-only
padding → EdgeInsets

The padding around the icon. The entire padded icon will reactb to input gestures.

read-only
size → double

The size of the icon.

read-only
hashCode → int

Get a hash code for this object.

read-only, inherited
key → Key

Controls how one widget replaces another widget in the tree.

read-only, inherited
runtimeType → Type

A representation of the runtime type of the object.

read-only, inherited

Operators

operator ==(other) → bool

The equality operator.

inherited

Methods

createState() → _ExpandIconState

Creates the mutable state for this widget at a given location in the tree.

createElement() → StatefulElement

Creates a StatefulElement to manage this widget's location in the tree.

inherited
debugFillDescription(List<String> description) → void

Add additional information to the given description for use by toString.

inherited
noSuchMethod(Invocation invocation) → dynamic

Invoked when a non-existent method or property is accessed.

inherited
toString() → String

Returns a string representation of this object.

inherited
toStringShort() → String

A short, textual description of this widget.

inherited