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Added backgroundColor and disabledBackgroundColor to SnackBarAction. (#118786)

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This commit is contained in:
Chinmoy
2023-03-28 03:55:56 +05:30
committed by GitHub
parent 6e2bbf9413
commit aa5db20fbb
4 changed files with 441 additions and 13 deletions
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41
packages/flutter/lib/src/material/snack_bar.dart
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@@ -7,6 +7,7 @@ import 'package:flutter/widgets.dart';
import 'button_style.dart';
import 'color_scheme.dart';
import 'colors.dart';
import 'icon_button.dart';
import 'icons.dart';
import 'material.dart';
@@ -88,9 +89,13 @@ class SnackBarAction extends StatefulWidget {
super.key,
this.textColor,
this.disabledTextColor,
this.backgroundColor,
this.disabledBackgroundColor,
required this.label,
required this.onPressed,
});
}) : assert(backgroundColor is! MaterialStateColor || disabledBackgroundColor == null,
'disabledBackgroundColor must not be provided when background color is '
'a MaterialStateColor');
/// The button label color. If not provided, defaults to
/// [SnackBarThemeData.actionTextColor].
@@ -101,10 +106,24 @@ class SnackBarAction extends StatefulWidget {
/// hovered and others.
final Color? textColor;
/// The button background fill color. If not provided, defaults to
/// [SnackBarThemeData.actionBackgroundColor].
///
/// If [backgroundColor] is a [MaterialStateColor], then the text color will
/// be resolved against the set of [MaterialState]s that the action text is
/// in, thus allowing for different colors for the states.
final Color? backgroundColor;
/// The button disabled label color. This color is shown after the
/// [SnackBarAction] is dismissed.
final Color? disabledTextColor;
/// The button diabled background color. This color is shown after the
/// [SnackBarAction] is dismissed.
///
/// If not provided, defaults to [SnackBarThemeData.disabledActionBackgroundColor].
final Color? disabledBackgroundColor;
/// The button label.
final String label;
@@ -166,9 +185,29 @@ class _SnackBarActionState extends State<SnackBarAction> {
});
}
MaterialStateColor? resolveBackgroundColor() {
if (widget.backgroundColor is MaterialStateColor) {
return widget.backgroundColor! as MaterialStateColor;
}
if (snackBarTheme.actionBackgroundColor is MaterialStateColor) {
return snackBarTheme.actionBackgroundColor! as MaterialStateColor;
}
return MaterialStateColor.resolveWith((Set<MaterialState> states) {
if (states.contains(MaterialState.disabled)) {
return widget.disabledBackgroundColor ??
snackBarTheme.disabledActionBackgroundColor ??
Colors.transparent;
}
return widget.backgroundColor ??
snackBarTheme.actionBackgroundColor ??
Colors.transparent;
});
}
return TextButton(
style: ButtonStyle(
foregroundColor: resolveForegroundColor(),
backgroundColor: resolveBackgroundColor(),
),
onPressed: _haveTriggeredAction ? null : _handlePressed,
child: Text(widget.label),

31
packages/flutter/lib/src/material/snack_bar_theme.dart
View File

@@ -7,6 +7,7 @@ import 'dart:ui' show lerpDouble;
import 'package:flutter/foundation.dart';
import 'package:flutter/widgets.dart';
import 'material_state.dart';
import 'theme.dart';
/// Defines where a [SnackBar] should appear within a [Scaffold] and how its
@@ -65,11 +66,16 @@ class SnackBarThemeData with Diagnosticable {
this.showCloseIcon,
this.closeIconColor,
this.actionOverflowThreshold,
this.actionBackgroundColor,
this.disabledActionBackgroundColor
}) : assert(elevation == null || elevation >= 0.0),
assert(width == null || identical(behavior, SnackBarBehavior.floating),
'Width can only be set if behaviour is SnackBarBehavior.floating'),
assert(actionOverflowThreshold == null || (actionOverflowThreshold >= 0 && actionOverflowThreshold <= 1),
'Action overflow threshold must be between 0 and 1 inclusive');
'Action overflow threshold must be between 0 and 1 inclusive'),
assert(actionBackgroundColor is! MaterialStateColor || disabledActionBackgroundColor == null,
'disabledBackgroundColor must not be provided when background color is '
'a MaterialStateColor');
/// Overrides the default value for [SnackBar.backgroundColor].
///
@@ -139,6 +145,15 @@ class SnackBarThemeData with Diagnosticable {
///
/// Must be a value between 0 and 1, if present.
final double? actionOverflowThreshold;
/// Overrides default value for [SnackBarAction.backgroundColor].
///
/// If null, [SnackBarAction] falls back to [Colors.transparent].
final Color? actionBackgroundColor;
/// Overrides default value for [SnackBarAction.].
///
/// If null, [SnackBarAction] falls back to [Colors.transparent].
final Color? disabledActionBackgroundColor;
/// Creates a copy of this object with the given fields replaced with the
/// new values.
@@ -155,6 +170,8 @@ class SnackBarThemeData with Diagnosticable {
bool? showCloseIcon,
Color? closeIconColor,
double? actionOverflowThreshold,
Color? actionBackgroundColor,
Color? disabledActionBackgroundColor,
}) {
return SnackBarThemeData(
backgroundColor: backgroundColor ?? this.backgroundColor,
@@ -169,6 +186,8 @@ class SnackBarThemeData with Diagnosticable {
showCloseIcon: showCloseIcon ?? this.showCloseIcon,
closeIconColor: closeIconColor ?? this.closeIconColor,
actionOverflowThreshold: actionOverflowThreshold ?? this.actionOverflowThreshold,
actionBackgroundColor: actionBackgroundColor ?? this.actionBackgroundColor,
disabledActionBackgroundColor: disabledActionBackgroundColor ?? this.disabledActionBackgroundColor,
);
}
@@ -193,6 +212,8 @@ class SnackBarThemeData with Diagnosticable {
insetPadding: EdgeInsets.lerp(a?.insetPadding, b?.insetPadding, t),
closeIconColor: Color.lerp(a?.closeIconColor, b?.closeIconColor, t),
actionOverflowThreshold: lerpDouble(a?.actionOverflowThreshold, b?.actionOverflowThreshold, t),
actionBackgroundColor: Color.lerp(a?.actionBackgroundColor, b?.actionBackgroundColor, t),
disabledActionBackgroundColor: Color.lerp(a?.disabledActionBackgroundColor, b?.disabledActionBackgroundColor, t),
);
}
@@ -210,6 +231,8 @@ class SnackBarThemeData with Diagnosticable {
showCloseIcon,
closeIconColor,
actionOverflowThreshold,
actionBackgroundColor,
disabledActionBackgroundColor
);
@override
@@ -232,7 +255,9 @@ class SnackBarThemeData with Diagnosticable {
&& other.insetPadding == insetPadding
&& other.showCloseIcon == showCloseIcon
&& other.closeIconColor == closeIconColor
&& other.actionOverflowThreshold == actionOverflowThreshold;
&& other.actionOverflowThreshold == actionOverflowThreshold
&& other.actionBackgroundColor == actionBackgroundColor
&& other.disabledActionBackgroundColor == disabledActionBackgroundColor;
}
@override
@@ -250,5 +275,7 @@ class SnackBarThemeData with Diagnosticable {
properties.add(DiagnosticsProperty<bool>('showCloseIcon', showCloseIcon, defaultValue: null));
properties.add(ColorProperty('closeIconColor', closeIconColor, defaultValue: null));
properties.add(DoubleProperty('actionOverflowThreshold', actionOverflowThreshold, defaultValue: null));
properties.add(ColorProperty('actionBackgroundColor', actionBackgroundColor, defaultValue: null));
properties.add(ColorProperty('disabledActionBackgroundColor', disabledActionBackgroundColor, defaultValue: null));
}
}

201
packages/flutter/test/material/snack_bar_test.dart
View File

@@ -2656,6 +2656,207 @@ void main() {
),
);
});
testWidgets('SnackBarAction backgroundColor works as a Color', (WidgetTester tester) async {
const Color backgroundColor = Colors.blue;
await tester.pumpWidget(
MaterialApp(
home: Scaffold(
body: Builder(
builder: (BuildContext context) {
return GestureDetector(
onTap: () {
ScaffoldMessenger.of(context).showSnackBar(
SnackBar(
content: const Text('I am a snack bar.'),
duration: const Duration(seconds: 2),
action: SnackBarAction(
backgroundColor: backgroundColor,
label: 'ACTION',
onPressed: () {},
),
),
);
},
child: const Text('Tap'),
);
},
),
),
),
);
await tester.tap(find.text('Tap'));
await tester.pumpAndSettle();
final Material materialBeforeDismissed = tester.widget<Material>(find.descendant(
of: find.widgetWithText(TextButton, 'ACTION'),
matching: find.byType(Material),
));
expect(materialBeforeDismissed.color, backgroundColor);
await tester.tap(find.text('ACTION'));
await tester.pump();
final Material materialAfterDismissed = tester.widget<Material>(find.descendant(
of: find.widgetWithText(TextButton, 'ACTION'),
matching: find.byType(Material),
));
expect(materialAfterDismissed.color, Colors.transparent);
});
testWidgets('SnackBarAction backgroundColor works as a MaterialStateColor', (WidgetTester tester) async {
final MaterialStateColor backgroundColor = MaterialStateColor.resolveWith((Set<MaterialState> states) {
if (states.contains(MaterialState.disabled)) {
return Colors.blue;
}
return Colors.purple;
});
await tester.pumpWidget(
MaterialApp(
home: Scaffold(
body: Builder(
builder: (BuildContext context) {
return GestureDetector(
onTap: () {
ScaffoldMessenger.of(context).showSnackBar(
SnackBar(
content: const Text('I am a snack bar.'),
duration: const Duration(seconds: 2),
action: SnackBarAction(
backgroundColor: backgroundColor,
label: 'ACTION',
onPressed: () {},
),
),
);
},
child: const Text('Tap'),
);
},
),
),
),
);
await tester.tap(find.text('Tap'));
await tester.pumpAndSettle();
final Material materialBeforeDismissed = tester.widget<Material>(find.descendant(
of: find.widgetWithText(TextButton, 'ACTION'),
matching: find.byType(Material),
));
expect(materialBeforeDismissed.color, Colors.purple);
await tester.tap(find.text('ACTION'));
await tester.pump();
final Material materialAfterDismissed = tester.widget<Material>(find.descendant(
of: find.widgetWithText(TextButton, 'ACTION'),
matching: find.byType(Material),
));
expect(materialAfterDismissed.color, Colors.blue);
});
testWidgets('SnackBarAction disabledBackgroundColor works as expected', (WidgetTester tester) async {
const Color backgroundColor = Colors.blue;
const Color disabledBackgroundColor = Colors.red;
await tester.pumpWidget(
MaterialApp(
home: Scaffold(
body: Builder(
builder: (BuildContext context) {
return GestureDetector(
onTap: () {
ScaffoldMessenger.of(context).showSnackBar(
SnackBar(
content: const Text('I am a snack bar.'),
duration: const Duration(seconds: 2),
action: SnackBarAction(
backgroundColor: backgroundColor,
disabledBackgroundColor: disabledBackgroundColor,
label: 'ACTION',
onPressed: () {},
),
),
);
},
child: const Text('Tap'),
);
},
),
),
),
);
await tester.tap(find.text('Tap'));
await tester.pumpAndSettle();
final Material materialBeforeDismissed = tester.widget<Material>(find.descendant(
of: find.widgetWithText(TextButton, 'ACTION'),
matching: find.byType(Material),
));
expect(materialBeforeDismissed.color, backgroundColor);
await tester.tap(find.text('ACTION'));
await tester.pump();
final Material materialAfterDismissed = tester.widget<Material>(find.descendant(
of: find.widgetWithText(TextButton, 'ACTION'),
matching: find.byType(Material),
));
expect(materialAfterDismissed.color, disabledBackgroundColor);
});
testWidgets('SnackBarAction asserts when backgroundColor is a MaterialStateColor and disabledBackgroundColor is also provided', (WidgetTester tester) async {
final Color backgroundColor = MaterialStateColor.resolveWith((Set<MaterialState> states) {
if (states.contains(MaterialState.disabled)) {
return Colors.blue;
}
return Colors.purple;
});
const Color disabledBackgroundColor = Colors.red;
await tester.pumpWidget(
MaterialApp(
home: Scaffold(
body: Builder(
builder: (BuildContext context) {
return GestureDetector(
onTap: () {
ScaffoldMessenger.of(context).showSnackBar(
SnackBar(
content: const Text('I am a snack bar.'),
duration: const Duration(seconds: 2),
action: SnackBarAction(
backgroundColor: backgroundColor,
disabledBackgroundColor: disabledBackgroundColor,
label: 'ACTION',
onPressed: () {},
),
),
);
},
child: const Text('Tap'),
);
},
),
),
),
);
await tester.tap(find.text('Tap'));
await tester.pumpAndSettle();
expect(tester.takeException(), isAssertionError.having(
(AssertionError e) => e.toString(),
'description',
contains('disabledBackgroundColor must not be provided when background color is a MaterialStateColor'))
);
});
}
/// Start test for "SnackBar dismiss test".

181
packages/flutter/test/material/snack_bar_theme_test.dart
View File

@@ -118,8 +118,7 @@ void main() {
));
await tester.tap(find.text('X'));
await tester.pump(); // start animation
await tester.pump(const Duration(milliseconds: 750));
await tester.pumpAndSettle();
final Material material = _getSnackBarMaterial(tester);
final RenderParagraph content = _getSnackBarTextRenderObject(tester, text);
@@ -156,8 +155,7 @@ void main() {
));
await tester.tap(find.text('X'));
await tester.pump(); // start animation
await tester.pump(const Duration(milliseconds: 750));
await tester.pumpAndSettle();
final Material material = _getSnackBarMaterial(tester);
final RenderParagraph button = _getSnackBarActionTextRenderObject(tester, action);
@@ -213,8 +211,7 @@ void main() {
));
await tester.tap(find.text('X'));
await tester.pump(); // start animation
await tester.pump(const Duration(milliseconds: 750));
await tester.pumpAndSettle();
final Finder materialFinder = _getSnackBarMaterialFinder(tester);
final Material material = _getSnackBarMaterial(tester);
@@ -233,6 +230,148 @@ void main() {
expect(snackBarBottomRight.dx, (800 + snackBarWidth) / 2); // Device width is 800.
});
testWidgets('SnackBarAction uses actionBackgroundColor', (WidgetTester tester) async {
final MaterialStateColor actionBackgroundColor = MaterialStateColor.resolveWith((Set<MaterialState> states) {
if (states.contains(MaterialState.disabled)) {
return Colors.blue;
}
return Colors.purple;
});
await tester.pumpWidget(MaterialApp(
theme: ThemeData(snackBarTheme: _createSnackBarTheme(actionBackgroundColor: actionBackgroundColor)),
home: Scaffold(
body: Builder(
builder: (BuildContext context) {
return GestureDetector(
onTap: () {
ScaffoldMessenger.of(context).showSnackBar(SnackBar(
content: const Text('I am a snack bar.'),
action: SnackBarAction(
label: 'ACTION',
onPressed: () {},
),
));
},
child: const Text('X'),
);
},
),
),
));
await tester.tap(find.text('X'));
await tester.pumpAndSettle();
final Material materialBeforeDismissed = tester.widget<Material>(find.descendant(
of: find.widgetWithText(TextButton, 'ACTION'),
matching: find.byType(Material),
));
expect(materialBeforeDismissed.color, Colors.purple);
await tester.tap(find.text('ACTION'));
await tester.pump();
final Material materialAfterDismissed = tester.widget<Material>(find.descendant(
of: find.widgetWithText(TextButton, 'ACTION'),
matching: find.byType(Material),
));
expect(materialAfterDismissed.color, Colors.blue);
});
testWidgets('SnackBarAction backgroundColor overrides SnackBarThemeData actionBackgroundColor', (WidgetTester tester) async {
final MaterialStateColor snackBarActionBackgroundColor = MaterialStateColor.resolveWith((Set<MaterialState> states) {
if (states.contains(MaterialState.disabled)) {
return Colors.amber;
}
return Colors.cyan;
});
final MaterialStateColor actionBackgroundColor = MaterialStateColor.resolveWith((Set<MaterialState> states) {
if (states.contains(MaterialState.disabled)) {
return Colors.blue;
}
return Colors.purple;
});
await tester.pumpWidget(MaterialApp(
theme: ThemeData(snackBarTheme: _createSnackBarTheme(actionBackgroundColor: actionBackgroundColor)),
home: Scaffold(
body: Builder(
builder: (BuildContext context) {
return GestureDetector(
onTap: () {
ScaffoldMessenger.of(context).showSnackBar(SnackBar(
content: const Text('I am a snack bar.'),
action: SnackBarAction(
label: 'ACTION',
backgroundColor: snackBarActionBackgroundColor,
onPressed: () {},
),
));
},
child: const Text('X'),
);
},
),
),
));
await tester.tap(find.text('X'));
await tester.pumpAndSettle();
final Material materialBeforeDismissed = tester.widget<Material>(find.descendant(
of: find.widgetWithText(TextButton, 'ACTION'),
matching: find.byType(Material),
));
expect(materialBeforeDismissed.color, Colors.cyan);
await tester.tap(find.text('ACTION'));
await tester.pump();
final Material materialAfterDismissed = tester.widget<Material>(find.descendant(
of: find.widgetWithText(TextButton, 'ACTION'),
matching: find.byType(Material),
));
expect(materialAfterDismissed.color, Colors.amber);
});
testWidgets('SnackBarThemeData asserts when actionBackgroundColor is a MaterialStateColor and disabledActionBackgroundColor is also provided', (WidgetTester tester) async {
final MaterialStateColor actionBackgroundColor = MaterialStateColor.resolveWith((Set<MaterialState> states) {
if (states.contains(MaterialState.disabled)) {
return Colors.blue;
}
return Colors.purple;
});
expect(() => tester.pumpWidget(MaterialApp(
theme: ThemeData(snackBarTheme: _createSnackBarTheme(actionBackgroundColor: actionBackgroundColor, disabledActionBackgroundColor: Colors.amber)),
home: Scaffold(
body: Builder(
builder: (BuildContext context) {
return GestureDetector(
onTap: () {
ScaffoldMessenger.of(context).showSnackBar(SnackBar(
content: const Text('I am a snack bar.'),
action: SnackBarAction(
label: 'ACTION',
onPressed: () {},
),
));
},
child: const Text('X'),
);
},
),
),
)), throwsA(isA<AssertionError>().having(
(AssertionError e) => e.toString(),
'description',
contains('disabledBackgroundColor must not be provided when background color is a MaterialStateColor'))
)
);
});
testWidgets('SnackBar theme behavior is correct for floating', (WidgetTester tester) async {
await tester.pumpWidget(MaterialApp(
theme: ThemeData(
@@ -260,8 +399,7 @@ void main() {
));
await tester.tap(find.text('X'));
await tester.pump(); // start animation
await tester.pump(const Duration(milliseconds: 750));
await tester.pumpAndSettle();
final RenderBox snackBarBox = tester.firstRenderObject(find.byType(SnackBar));
final RenderBox floatingActionButtonBox = tester.firstRenderObject(find.byType(FloatingActionButton));
@@ -305,8 +443,7 @@ void main() {
final Offset floatingActionButtonOriginBottomCenter = floatingActionButtonOriginBox.localToGlobal(floatingActionButtonOriginBox.size.bottomCenter(Offset.zero));
await tester.tap(find.text('X'));
await tester.pump(); // start animation
await tester.pump(const Duration(milliseconds: 750));
await tester.pumpAndSettle();
final RenderBox snackBarBox = tester.firstRenderObject(find.byType(SnackBar));
final RenderBox floatingActionButtonBox = tester.firstRenderObject(find.byType(FloatingActionButton));
@@ -435,6 +572,30 @@ SnackBarThemeData _snackBarTheme({bool? showCloseIcon}) {
);
}
SnackBarThemeData _createSnackBarTheme({
Color? backgroundColor,
Color? actionTextColor,
Color? disabledActionTextColor,
TextStyle? contentTextStyle,
double? elevation,
ShapeBorder? shape,
SnackBarBehavior? behavior,
Color? actionBackgroundColor,
Color? disabledActionBackgroundColor
}) {
return SnackBarThemeData(
backgroundColor: backgroundColor,
actionTextColor: actionTextColor,
disabledActionTextColor: disabledActionTextColor,
contentTextStyle: contentTextStyle,
elevation: elevation,
shape: shape,
behavior: behavior,
actionBackgroundColor: actionBackgroundColor,
disabledActionBackgroundColor: disabledActionBackgroundColor
);
}
Material _getSnackBarMaterial(WidgetTester tester) {
return tester.widget<Material>(
_getSnackBarMaterialFinder(tester).first,