ReorderableItemsView class
A list whose items the user can interactively reorder by dragging.
This class is appropriate for views with a small number of children because constructing the List requires doing work for every child that could possibly be displayed in the list view instead of just those children that are actually visible.
All children must have a key.
- Inheritance
-
- Object
- DiagnosticableTree
- Widget
- StatefulWidget
- ReorderableItemsView
Constructors
-
ReorderableItemsView({Key? key, Widget? header, required List<
Widget> children, required ReorderCallback onReorder, ScrollController? scrollController, Axis scrollDirection = Axis.vertical, EdgeInsets? padding, List<StaggeredTile> ? staggeredTiles, int crossAxisCount = 3, bool isGrid = false, bool reverse = false, bool longPressToDrag = true, double mainAxisSpacing = 0.0, double crossAxisSpacing = 0.0, IndexedFeedBackWidgetBuilder? feedBackWidgetBuilder}) - Creates a reorderable list.
Properties
-
children
→ List<
Widget> -
The widgets to display.
final
- crossAxisCount → int
-
Used when we are building a GridView
final
- crossAxisSpacing → double
-
Used when we are building a GridView
final
- feedBackWidgetBuilder → IndexedFeedBackWidgetBuilder?
-
final
- hashCode → int
-
The hash code for this object.
no setterinherited
- header → Widget?
-
A non-reorderable header widget to show before the list.
final
- isGrid → bool
-
Used when we are building a GridView
final
- key → Key?
-
Controls how one widget replaces another widget in the tree.
finalinherited
- longPressToDrag → bool
-
Used when we are building a GridView
final
- mainAxisSpacing → double
-
Used when we are building a GridView
final
- onReorder → ReorderCallback
-
Called when a list child is dropped into a new position to shuffle the
underlying list.
final
- padding → EdgeInsets?
-
The amount of space by which to inset the children.
final
- reverse → bool
-
Whether the scroll view scrolls in the reading direction.
final
- runtimeType → Type
-
A representation of the runtime type of the object.
no setterinherited
- scrollController → ScrollController?
-
Creates a ScrollPosition to manage and determine which portion
of the content is visible in the scroll view.
final
- scrollDirection → Axis
-
The Axis along which the list scrolls.
final
-
staggeredTiles
→ List<
StaggeredTile> ? -
Used when we are building a GridView
final
Methods
-
createElement(
) → StatefulElement -
Creates a StatefulElement to manage this widget's location in the tree.
inherited
-
createState(
) → _ReorderableItemsViewState -
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}) → 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