DragBehavior<T extends StatefulWidget> mixin

A mixin that provides drag behavior for StatefulWidget states.

This mixin can be added to widget states to enable drag functionality with customizable callbacks and constraints.

Superclass constraints

Properties

context → BuildContext
The location in the tree where this widget builds.
no setterinherited
dragState ↔ DragState
The current drag state.
getter/setter pair
hashCode → int
The hash code for this object.
no setterinherited
mounted → bool
Whether this State object is currently in a tree.
no setterinherited
runtimeType → Type
A representation of the runtime type of the object.
no setterinherited
widget → T
The current configuration.
no setterinherited

Methods

activate() → void
Called when this object is reinserted into the tree after having been removed via deactivate.
inherited
build(BuildContext context) → Widget
Describes the part of the user interface represented by this widget.
inherited
deactivate() → void
Called when this object is removed from the tree.
inherited
debugFillProperties(DiagnosticPropertiesBuilder properties) → void
Add additional properties associated with the node.
inherited
didChangeDependencies() → void
Called when a dependency of this State object changes.
inherited
didUpdateWidget(covariant T oldWidget) → void
Called whenever the widget configuration changes.
inherited
dispose() → void
Called when this object is removed from the tree permanently.
inherited
initState() → void
Called when this object is inserted into the tree.
inherited
noSuchMethod(Invocation invocation) → dynamic
Invoked when a nonexistent method or property is accessed.
inherited
onDragCancel() → void
Called when a drag operation is cancelled.
onDragEnd() → void
Called when a drag operation ends.
onDragStart(Offset position) → void
Called when a drag operation starts.
onDragUpdate(Offset position, Offset delta) → void
Called when the drag position updates.
reassemble() → void
Called whenever the application is reassembled during debugging, for example during hot reload.
inherited
setState(VoidCallback fn) → void
Notify the framework that the internal state of this object has changed.
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
toStringShort() → String
A brief description of this object, usually just the runtimeType and the hashCode.
inherited
wrapWithDragDetection(Widget child, {bool enabled = true}) → Widget
Wraps a child widget with drag gesture detection.

Operators

operator ==(Object other) → bool
The equality operator.
inherited