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// Copyright 2014 The Flutter Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
import 'package:flutter/rendering.dart';
import 'package:flutter/widgets.dart';
import 'colors.dart';
/// A button in a _ContextMenuSheet.
/// A typical use case is to pass a [Text] as the [child] here, but be sure to
/// use [TextOverflow.ellipsis] for the [Text.overflow] field if the text may be
/// long, as without it the text will wrap to the next line.
class CupertinoContextMenuAction extends StatefulWidget {
/// Construct a CupertinoContextMenuAction.
const CupertinoContextMenuAction({
Key key,
@required this.child,
this.isDefaultAction = false,
this.isDestructiveAction = false,
}) : assert(child != null),
assert(isDefaultAction != null),
assert(isDestructiveAction != null),
super(key: key);
/// The widget that will be placed inside the action.
final Widget child;
/// Indicates whether this action should receive the style of an emphasized,
/// default action.
final bool isDefaultAction;
/// Indicates whether this action should receive the style of a destructive
/// action.
final bool isDestructiveAction;
/// Called when the action is pressed.
final VoidCallback onPressed;
/// An optional icon to display to the right of the child.
/// Will be colored in the same way as the [TextStyle] used for [child] (for
/// example, if using [isDestructiveAction]).
final IconData trailingIcon;
_CupertinoContextMenuActionState createState() => _CupertinoContextMenuActionState();
class _CupertinoContextMenuActionState extends State<CupertinoContextMenuAction> {
static const Color _kBackgroundColor = Color(0xFFEEEEEE);
static const Color _kBackgroundColorPressed = Color(0xFFDDDDDD);
static const double _kButtonHeight = 56.0;
static const TextStyle _kActionSheetActionStyle = TextStyle(
fontFamily: '.SF UI Text',
inherit: false,
fontSize: 20.0,
fontWeight: FontWeight.w400,
textBaseline: TextBaseline.alphabetic,
final GlobalKey _globalKey = GlobalKey();
bool _isPressed = false;
void onTapDown(TapDownDetails details) {
setState(() {
_isPressed = true;
void onTapUp(TapUpDetails details) {
setState(() {
_isPressed = false;
void onTapCancel() {
setState(() {
_isPressed = false;
TextStyle get _textStyle {
if (widget.isDefaultAction) {
return _kActionSheetActionStyle.copyWith(
fontWeight: FontWeight.w600,
if (widget.isDestructiveAction) {
return _kActionSheetActionStyle.copyWith(
color: CupertinoColors.destructiveRed,
return _kActionSheetActionStyle;
Widget build(BuildContext context) {
return GestureDetector(
key: _globalKey,
onTapDown: onTapDown,
onTapUp: onTapUp,
onTapCancel: onTapCancel,
onTap: widget.onPressed,
behavior: HitTestBehavior.opaque,
child: ConstrainedBox(
constraints: const BoxConstraints(
minHeight: _kButtonHeight,
child: Semantics(
button: true,
child: Container(
decoration: BoxDecoration(
color: _isPressed ? _kBackgroundColorPressed : _kBackgroundColor,
border: const Border(
bottom: BorderSide(width: 1.0, color: _kBackgroundColorPressed),
padding: const EdgeInsets.symmetric(
vertical: 16.0,
horizontal: 10.0,
child: DefaultTextStyle(
style: _textStyle,
child: Row(
mainAxisAlignment: MainAxisAlignment.spaceBetween,
children: <Widget>[
child: widget.child,
if (widget.trailingIcon != null)
color: _textStyle.color,