ReorderableDelayedDragStartListener class Null safety

A wrapper widget that will recognize the start of a drag operation by looking for a long press event. Once it is recognized, it will start a drag operation on the wrapped item in the reorderable list.

See also:



ReorderableDelayedDragStartListener({Key? key, required Widget child, required int index, bool enabled = true})
Creates a listener for an drag following a long press event over the given child widget.


child Widget
The widget for which the application would like to respond to a tap and drag gesture by starting a reordering drag on a reorderable list.
final, inherited
enabled bool
Whether the child item can be dragged and moved in the list.
final, inherited
hashCode int
The hash code for this object.
@nonVirtual, read-only, inherited
index int
The index of the associated item that will be dragged in the list.
final, inherited
key Key?
Controls how one widget replaces another widget in the tree.
final, inherited
runtimeType Type
A representation of the runtime type of the object.
read-only, inherited


build(BuildContext context) Widget
Describes the part of the user interface represented by this widget.
createElement() StatelessElement
Creates a StatelessElement to manage this widget's location in the tree.
createRecognizer() MultiDragGestureRecognizer
Provides the gesture recognizer used to indicate the start of a reordering drag operation.
debugDescribeChildren() List<DiagnosticsNode>
Returns a list of DiagnosticsNode objects describing this node's children.
@protected, inherited
debugFillProperties(DiagnosticPropertiesBuilder properties) → void
Add additional properties associated with the node.
noSuchMethod(Invocation invocation) → dynamic
Invoked when a non-existent method or property is accessed.
toDiagnosticsNode({String? name, DiagnosticsTreeStyle? style}) DiagnosticsNode
Returns a debug representation of the object that is used by debugging tools and by DiagnosticsNode.toStringDeep.
toString({DiagnosticLevel minLevel =}) String
A string representation of this object.
toStringDeep({String prefixLineOne = '', String? prefixOtherLines, DiagnosticLevel minLevel = DiagnosticLevel.debug}) String
Returns a string representation of this node and its descendants.
toStringShallow({String joiner = ', ', DiagnosticLevel minLevel = DiagnosticLevel.debug}) String
Returns a one-line detailed description of the object.
toStringShort() String
A short, textual description of this widget.


operator ==(Object other) bool
The equality operator.
@nonVirtual, inherited