48 lines
1.3 KiB
Dart
48 lines
1.3 KiB
Dart
import 'dart:async';
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import 'package:aves/model/settings/settings.dart';
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import 'package:aves/theme/durations.dart';
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import 'package:aves/widgets/common/extensions/build_context.dart';
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import 'package:flutter/foundation.dart';
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import 'package:flutter/material.dart';
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import 'package:overlay_support/overlay_support.dart';
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class DoubleBackPopHandler {
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bool _backOnce = false;
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Timer? _backTimer;
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DoubleBackPopHandler() {
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if (kFlutterMemoryAllocationsEnabled) {
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FlutterMemoryAllocations.instance.dispatchObjectCreated(
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library: 'aves',
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className: '$DoubleBackPopHandler',
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object: this,
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);
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}
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}
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void dispose() {
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if (kFlutterMemoryAllocationsEnabled) {
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FlutterMemoryAllocations.instance.dispatchObjectDisposed(object: this);
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}
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_stopBackTimer();
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}
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bool pop(BuildContext context) {
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if (!Navigator.canPop(context) && settings.mustBackTwiceToExit && !_backOnce) {
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_backOnce = true;
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_stopBackTimer();
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_backTimer = Timer(ADurations.doubleBackTimerDelay, () => _backOnce = false);
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toast(
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context.l10n.doubleBackExitMessage,
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duration: ADurations.doubleBackTimerDelay,
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);
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return false;
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}
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return true;
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}
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void _stopBackTimer() {
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_backTimer?.cancel();
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}
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}
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