blob: ae4c170b53abd44906e7d6a42c0bdcc8b08c17a7 [file] [log] [blame]
// Copyright 2017 The Fuchsia 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:fuchsia_scenic_flutter/child_view.dart' show ChildView;
import 'package:flutter/material.dart';
import 'package:lib.widgets/model.dart';
import 'authentication_overlay_model.dart';
/// Signature for callback used to indicate that the user cancelled the authorization
/// flow.
typedef AuthenticationCancelCallback = void Function();
/// Displays the authentication window.
class AuthenticationOverlay extends StatelessWidget {
/// Constructs an authentication overlay that calls the provided callback if the
/// user cancels the login flow.
const AuthenticationOverlay({AuthenticationCancelCallback onCancel})
: _onCancel = onCancel;
/// The callback that is triggered when the user taps outside of the child view,
/// cancelling the authorization flow.
final AuthenticationCancelCallback _onCancel;
Widget build(BuildContext context) =>
builder: (
BuildContext context,
Widget child,
AuthenticationOverlayModel model,
) =>
animation: model.animation,
builder: (BuildContext context, Widget child) => Offstage(
offstage: model.animation.isDismissed,
child: Opacity(
opacity: model.animation.value,
child: child,
child: Stack(
fit: StackFit.passthrough,
children: <Widget>[
onTap: _onCancel,
widthFactor: 0.75,
heightFactor: 0.75,
child: ChildView(
connection: model.childViewConnection,