Jisho-Study-Tool/lib/components/kanji/kanji_search_body.dart

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import 'package:animated_size_and_fade/animated_size_and_fade.dart';
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import 'package:flutter/material.dart';
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import '../../services/kanji_suggestions.dart';
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import 'kanji_search_body/kanji_grid.dart';
import 'kanji_search_body/kanji_search_bar.dart';
import 'kanji_search_body/kanji_search_options_bar.dart';
class KanjiSearchBody extends StatefulWidget {
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const KanjiSearchBody({Key? key}) : super(key: key);
@override
_KanjiSearchBodyState createState() => _KanjiSearchBodyState();
}
class _KanjiSearchBodyState extends State<KanjiSearchBody>
with SingleTickerProviderStateMixin {
late final AnimationController _controller;
late final Animation _searchbarMovementAnimation;
final FocusNode focus = FocusNode();
final GlobalKey<KanjiSearchBarState> _kanjiSearchBarState =
GlobalKey<KanjiSearchBarState>();
List<String> suggestions = [];
@override
void initState() {
super.initState();
_controller = AnimationController(
vsync: this,
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duration: const Duration(milliseconds: 200),
);
_searchbarMovementAnimation = AlignmentTween(
begin: Alignment.center,
end: Alignment.topCenter,
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).animate(
CurvedAnimation(
parent: _controller,
curve: Curves.easeInOut,
),
);
}
@override
void dispose() {
_controller.dispose();
super.dispose();
}
@override
Widget build(BuildContext context) {
return WillPopScope(
onWillPop: () async {
if (_controller.value == 1) {
focus.unfocus();
_kanjiSearchBarState.currentState!.clearText();
return false;
}
return true;
},
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child: InkWell(
onTap: () => FocusScope.of(context).unfocus(),
child: Container(
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decoration: const BoxDecoration(),
alignment: Alignment.center,
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padding: const EdgeInsets.symmetric(horizontal: 20),
child: AnimatedBuilder(
animation: _searchbarMovementAnimation,
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builder: (context, _) {
return Container(
alignment: _searchbarMovementAnimation.value,
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padding: const EdgeInsets.symmetric(vertical: 10.0),
child: Column(
mainAxisSize: MainAxisSize.min,
children: [
Focus(
focusNode: focus,
onFocusChange: (hasFocus) {
if (hasFocus)
_controller.forward();
else
_controller.reverse();
},
child: KanjiSearchBar(
key: _kanjiSearchBarState,
onChanged: (text) => setState(() {
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suggestions = kanjiSuggestions(text);
}),
),
),
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const SizedBox(height: 20),
AnimatedSizeAndFade(
fadeDuration: const Duration(milliseconds: 200),
sizeDuration: const Duration(milliseconds: 300),
child: (_controller.value == 1 && suggestions.isNotEmpty)
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? KanjiGrid(suggestions: suggestions)
: (_controller.value == 1)
? const Text(
'Type a kanji to start searching',
style: TextStyle(
fontSize: 16,
color: Colors.grey,
),
)
: const KanjiSearchOptionsBar(),
),
],
),
);
},
),
),
),
);
}
}