material_bottom_sheet.dart
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import 'package:flutter/material.dart';
import 'package:modal_bottom_sheet/modal_bottom_sheet.dart';
import 'dart:async';
/// Shows a modal material design bottom sheet.
Future<T?> showMaterialModalBottomSheet<T>({
required BuildContext context,
double? closeProgressThreshold,
required WidgetBuilder builder,
Color? backgroundColor,
double? elevation,
ShapeBorder? shape,
Clip? clipBehavior,
Color? barrierColor,
bool bounce = false,
bool expand = false,
AnimationController? secondAnimation,
Curve? animationCurve,
bool useRootNavigator = false,
bool isDismissible = true,
bool enableDrag = true,
Duration? duration,
RouteSettings? settings,
}) async {
assert(debugCheckHasMediaQuery(context));
assert(debugCheckHasMaterialLocalizations(context));
final result = await Navigator.of(context, rootNavigator: useRootNavigator)
.push(ModalBottomSheetRoute<T>(
builder: builder,
closeProgressThreshold: closeProgressThreshold,
containerBuilder: _materialContainerBuilder(
context,
backgroundColor: backgroundColor,
elevation: elevation,
shape: shape,
clipBehavior: clipBehavior,
theme: Theme.of(context),
),
secondAnimationController: secondAnimation,
bounce: bounce,
expanded: expand,
barrierLabel: MaterialLocalizations.of(context).modalBarrierDismissLabel,
isDismissible: isDismissible,
modalBarrierColor: barrierColor,
enableDrag: enableDrag,
animationCurve: animationCurve,
duration: duration,
settings: settings,
));
return result;
}
//Default container builder is the Material Appearance
WidgetWithChildBuilder _materialContainerBuilder(BuildContext context,
{Color? backgroundColor,
double? elevation,
ThemeData? theme,
Clip? clipBehavior,
ShapeBorder? shape}) {
final bottomSheetTheme = Theme.of(context).bottomSheetTheme;
final color = backgroundColor ??
bottomSheetTheme.modalBackgroundColor ??
bottomSheetTheme.backgroundColor;
final effectiveElevation = elevation ?? bottomSheetTheme.elevation ?? 0.0;
final effectiveShape = shape ?? bottomSheetTheme.shape;
final effectiveClipBehavior =
clipBehavior ?? bottomSheetTheme.clipBehavior ?? Clip.none;
Widget result(context, animation, child) => Material(
color: color,
elevation: effectiveElevation,
shape: effectiveShape,
clipBehavior: effectiveClipBehavior,
child: child,
);
if (theme != null) {
return (context, animation, child) =>
Theme(data: theme, child: result(context, animation, child));
} else {
return result;
}
}