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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/foundation.dart';
import 'package:flutter/services.dart';
import 'basic.dart';
import 'framework.dart';
/// A widget that describes this app in the operating system.
class Title extends StatelessWidget {
/// Creates a widget that describes this app to the Android operating system.
///
/// [title] will default to the empty string if not supplied.
/// [color] must be an opaque color (i.e. color.alpha must be 255 (0xFF)).
/// [color] and [child] are required arguments.
Title({
Key key,
this.title = '',
@required this.color,
@required this.child,
}) : assert(title != null),
assert(color != null && color.alpha == 0xFF),
super(key: key);
/// A one-line description of this app for use in the window manager.
/// Must not be null.
final String title;
/// A color that the window manager should use to identify this app. Must be
/// an opaque color (i.e. color.alpha must be 255 (0xFF)), and must not be
/// null.
final Color color;
/// The widget below this widget in the tree.
///
/// {@macro flutter.widgets.child}
final Widget child;
@override
Widget build(BuildContext context) {
SystemChrome.setApplicationSwitcherDescription(
ApplicationSwitcherDescription(
label: title,
primaryColor: color.value,
),
);
return child;
}
@override
void debugFillProperties(DiagnosticPropertiesBuilder properties) {
super.debugFillProperties(properties);
properties.add(StringProperty('title', title, defaultValue: ''));
properties.add(ColorProperty('color', color, defaultValue: null));
}
}