MergeableMaterial class
Displays a list of MergeableMaterialItem children. The list contains MaterialSlice items whose boundaries are either "merged" with adjacent items or separated by a MaterialGap. The children are distributed along the given mainAxis in the same way as the children of a ListBody. When the list of children changes, gaps are automatically animated open or closed as needed.
To enable this widget to correlate its list of children with the previous one, each child must specify a key.
When a new gap is added to the list of children the adjacent items are animated apart. Similarly when a gap is removed the adjacent items are brought back together.
When a new slice is added or removed, the app is responsible for animating the transition of the slices, while the gaps will be animated automatically.
See also:
- Card, a piece of material that does not support splitting and merging but otherwise looks the same.
- Inheritance
- Object
- Diagnosticable
- DiagnosticableTree
- Widget
- StatefulWidget
- MergeableMaterial
Constructors
-
MergeableMaterial({Key key, Axis mainAxis: Axis.vertical, int elevation: 2, bool hasDividers: false, List<
MergeableMaterialItem> children: const [] }) -
Creates a mergeable Material list of items.
const
Properties
-
children
→ List<
MergeableMaterialItem> -
The children of the MergeableMaterial.
final
- elevation → int
-
The z-coordinate at which to place all the Material slices. [...]
final
- hasDividers → bool
-
Whether connected pieces of MaterialSlice have dividers between them.
final
- mainAxis → Axis
-
The main layout axis.
final
- hashCode → int
-
The hash code for this object. [...]
read-only, 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
Methods
-
createState(
) → _MergeableMaterialState -
Creates the mutable state for this widget at a given location in the tree. [...]
override
-
debugFillProperties(
DiagnosticPropertiesBuilder properties) → void -
Add additional properties associated with the node. [...]
override
-
createElement(
) → StatefulElement -
Creates a StatefulElement to manage this widget's location in the tree. [...]
inherited
-
debugDescribeChildren(
) → List< DiagnosticsNode> -
Returns a list of DiagnosticsNode objects describing this node's
children. [...]
@protected, inherited
-
noSuchMethod(
Invocation invocation) → dynamic -
Invoked when a non-existent 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 toStringDeep. [...]
inherited
-
toString(
{DiagnosticLevel minLevel: DiagnosticLevel.debug }) → String -
Returns 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 ==(
dynamic other) → bool -
The equality operator. [...]
inherited