RawMenuAnchorGroup class
Creates a menu anchor that is always visible and is not displayed in an OverlayPortal.
A RawMenuAnchorGroup can be used to create a menu bar that handles external taps and keyboard shortcuts, but defines no default focus or keyboard traversal to enable more flexibility.
When a MenuController is given to a RawMenuAnchorGroup,
- MenuController.open has no effect.
- MenuController.close closes all child RawMenuAnchors that are open.
- MenuController.isOpen reflects whether any child RawMenuAnchor is open.
A child must be provided.
This example uses RawMenuAnchorGroup to build a menu bar with four
submenus. Hovering over a menu item opens its respective submenu. Selecting
a menu item will close the menu and update the selected item text.
link
To create a local project with this code sample, run:
flutter create --sample=widgets.RawMenuAnchorGroup.1 mysample
See also:
- MenuBar, which wraps this widget with standard layout and semantics and focus management.
- MenuAnchor, a menu anchor that follows the Material Design guidelines.
- RawMenuAnchor, a widget that defines a region attached to a floating submenu.
- Inheritance
-
- Object
- DiagnosticableTree
- Widget
- StatefulWidget
- RawMenuAnchorGroup
Constructors
- RawMenuAnchorGroup({Key? key, required Widget child, required MenuController controller})
-
Creates a RawMenuAnchorGroup.
const
Properties
- child → Widget
-
The child displayed by the RawMenuAnchorGroup.
final
- controller → MenuController
-
An MenuController that allows the closing of the menu from other
widgets.
final
- hashCode → int
-
The hash code for this object.
no setterinherited
- key → Key?
-
Controls how one widget replaces another widget in the tree.
finalinherited
- runtimeType → Type
-
A representation of the runtime type of the object.
no setterinherited
Methods
-
createElement(
) → StatefulElement -
Creates a StatefulElement to manage this widget's location in the tree.
inherited
-
createState(
) → State< RawMenuAnchorGroup> -
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.
override
-
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, int wrapWidth = 65}) → 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