BarrierBuilder typedef

BarrierBuilder = Widget? Function(BuildContext context, Widget child, Animation<double> animation, int stackIndex)

Builder function for drawer modal barriers.

Creates an optional barrier widget that appears over the backdrop when the drawer is modal. Typically used for dimming and dismissal handling.

Parameters:

• context (BuildContext): Build context
• child (Widget): Content behind the barrier
• animation (Animation<double>): Animation value from 0 (closed) to 1 (open)
• stackIndex (int): Index of the drawer in the stack

Returns the barrier widget or null if no barrier needed.

Implementation

typedef BarrierBuilder = Widget? Function(BuildContext context, Widget child,
    Animation<double> animation, int stackIndex);