ExpanderController class
A controller that manages the expanded state of an Expander widget.
ExpanderController allows for programmatic control of an Expander's state, enabling toggling and direct setting of the expanded state from outside the widget.
See also:
doc/component/expander.mdfor more detailed documentation- Expander, which uses this controller
Constructors
- ExpanderController.new({bool initiallyExpanded = false})
- Creates an ExpanderController with an optional initial expanded state.
Properties
-
expanded
→ ValueNotifier<
bool> -
A notifier that tracks the current expanded state.
final
- hashCode → int
-
The hash code for this object.
no setterinherited
- runtimeType → Type
-
A representation of the runtime type of the object.
no setterinherited
Methods
-
noSuchMethod(
Invocation invocation) → dynamic -
Invoked when a nonexistent method or property is accessed.
inherited
-
setExpanded(
bool value) → void - Sets the expansion state to the specified value.
-
toggle(
) → void - Toggles between expanded and collapsed states.
-
toString(
) → String -
A string representation of this object.
inherited
Operators
-
operator ==(
Object other) → bool -
The equality operator.
inherited