ChartDrillDownController class

A ValueNotifier<DrillDownState> managing hierarchical drill-down.

// Listen for level changes:
drillCtrl.addListener(() {
  final config = drillCtrl.currentConfig;
  setState(() => _activeConfig = config);
});

// Navigate down:
drillCtrl.push(myLevel);

// Navigate up:
drillCtrl.pop();

// Jump to root:
drillCtrl.popAll();
Inheritance

Constructors

ChartDrillDownController({required DrillDownLevel root})

Properties

no setter
canPop → bool
no setter
currentConfig → BaseChartConfig
no setter
currentLevel → DrillDownLevel
no setter
currentXRange → (double, double)
The x-range start, end in the root data space for the current level.
no setter
depth → int
no setter
hashCode → int
The hash code for this object.
no setterinherited
hasListeners → bool
Whether any listeners are currently registered.
no setterinherited
isDisposed → bool
Whether this drill-down controller has been disposed.
no setter
runtimeType → Type
A representation of the runtime type of the object.
no setterinherited
value ↔ DrillDownState
The current value stored in this notifier.
getter/setter pairinherited-getteroverride-setter

Methods

addListener(VoidCallback listener) → void
Register a closure to be called when the object changes.
inherited
dispose() → void
Discards any resources used by the object.
override
noSuchMethod(Invocation invocation) → dynamic
Invoked when a nonexistent method or property is accessed.
inherited
notifyListeners() → void
Call all the registered listeners.
inherited
pop() → void
Pop back to the previous level.
popAll() → void
Pop back to root, clearing the entire drill-down history.
popTo(String id) → void
Pop back to the level with id, if it exists in the stack.
push(DrillDownLevel level) → void
Push a new drill-down level.
removeListener(VoidCallback listener) → void
Remove a previously registered closure from the list of closures that are notified when the object changes.
inherited
replace(DrillDownLevel level) → void
Replace the current level (in-place update without history push).
toString() → String
A string representation of this object.
inherited

Operators

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