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refactor: Make widgets null safe

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This commit is contained in:
Krille Fear 2022-01-28 18:21:20 +01:00
commit f2d9c9ecf1
11 changed files with 107 additions and 82 deletions
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32
lib/widgets/default_app_bar_search_field.dart
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@ -1,3 +1,5 @@
//@dart=2.12
import 'package:flutter/material.dart';
import 'package:flutter_gen/gen_l10n/l10n.dart';
@ -5,22 +7,22 @@ import 'package:flutter_gen/gen_l10n/l10n.dart';
import '../config/app_config.dart';
class DefaultAppBarSearchField extends StatefulWidget {
final TextEditingController searchController;
final void Function(String) onChanged;
final void Function(String) onSubmit;
final Widget suffix;
final TextEditingController? searchController;
final void Function(String)? onChanged;
final void Function(String)? onSubmit;
final Widget? suffix;
final bool autofocus;
final String prefixText;
final String hintText;
final String labelText;
final EdgeInsets padding;
final String? prefixText;
final String? hintText;
final String? labelText;
final EdgeInsets? padding;
final bool readOnly;
final Widget prefixIcon;
final Widget? prefixIcon;
final bool unfocusOnClear;
final bool autocorrect;
const DefaultAppBarSearchField({
Key key,
Key? key,
this.searchController,
this.onChanged,
this.onSubmit,
@ -42,14 +44,14 @@ class DefaultAppBarSearchField extends StatefulWidget {
}
class DefaultAppBarSearchFieldState extends State<DefaultAppBarSearchField> {
TextEditingController _searchController;
late final TextEditingController _searchController;
bool _lastTextWasEmpty = false;
final FocusNode _focusNode = FocusNode();
void requestFocus() => _focusNode.requestFocus();
void _updateSearchController() {
final thisTextIsEmpty = _searchController.text?.isEmpty ?? false;
final thisTextIsEmpty = _searchController.text.isEmpty;
if (_lastTextWasEmpty != thisTextIsEmpty) {
setState(() => _lastTextWasEmpty = thisTextIsEmpty);
}
@ -61,7 +63,7 @@ class DefaultAppBarSearchFieldState extends State<DefaultAppBarSearchField> {
_searchController = widget.searchController ?? TextEditingController();
// we need to remove the listener in the dispose method, so we need a reference to the callback
_searchController.addListener(_updateSearchController);
_focusNode.addListener(() => setState(() => null));
_focusNode.addListener(() => setState(() {}));
}
@override
@ -108,9 +110,9 @@ class DefaultAppBarSearchFieldState extends State<DefaultAppBarSearchField> {
suffixIcon: !widget.readOnly &&
(_focusNode.hasFocus ||
(widget.suffix == null &&
(_searchController.text?.isNotEmpty ?? false)))
(_searchController.text.isNotEmpty)))
? IconButton(
tooltip: L10n.of(context).clearText,
tooltip: L10n.of(context)!.clearText,
icon: const Icon(Icons.backspace_outlined),
onPressed: () {
_searchController.clear();