127 lines
3.9 KiB
Dart
127 lines
3.9 KiB
Dart
import 'package:aves/widgets/collection/search/search_delegate.dart';
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import 'package:flutter/foundation.dart';
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import 'package:flutter/material.dart';
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class SearchPage extends StatefulWidget {
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static const routeName = '/search';
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final ImageSearchDelegate delegate;
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final Animation<double> animation;
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const SearchPage({
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this.delegate,
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this.animation,
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});
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@override
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_SearchPageState createState() => _SearchPageState();
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}
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class _SearchPageState extends State<SearchPage> {
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FocusNode focusNode = FocusNode();
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@override
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void initState() {
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super.initState();
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widget.delegate.queryTextController.addListener(_onQueryChanged);
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widget.animation.addStatusListener(_onAnimationStatusChanged);
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widget.delegate.currentBodyNotifier.addListener(_onSearchBodyChanged);
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focusNode.addListener(_onFocusChanged);
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widget.delegate.focusNode = focusNode;
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}
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@override
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void dispose() {
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super.dispose();
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widget.delegate.queryTextController.removeListener(_onQueryChanged);
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widget.animation.removeStatusListener(_onAnimationStatusChanged);
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widget.delegate.currentBodyNotifier.removeListener(_onSearchBodyChanged);
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widget.delegate.focusNode = null;
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focusNode.dispose();
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}
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void _onAnimationStatusChanged(AnimationStatus status) {
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if (status != AnimationStatus.completed) {
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return;
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}
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widget.animation.removeStatusListener(_onAnimationStatusChanged);
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focusNode.requestFocus();
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}
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@override
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void didUpdateWidget(SearchPage oldWidget) {
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super.didUpdateWidget(oldWidget);
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if (widget.delegate != oldWidget.delegate) {
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oldWidget.delegate.queryTextController.removeListener(_onQueryChanged);
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widget.delegate.queryTextController.addListener(_onQueryChanged);
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oldWidget.delegate.currentBodyNotifier.removeListener(_onSearchBodyChanged);
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widget.delegate.currentBodyNotifier.addListener(_onSearchBodyChanged);
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oldWidget.delegate.focusNode = null;
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widget.delegate.focusNode = focusNode;
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}
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}
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void _onFocusChanged() {
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if (focusNode.hasFocus && widget.delegate.currentBody != SearchBody.suggestions) {
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widget.delegate.showSuggestions(context);
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}
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}
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void _onQueryChanged() {
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setState(() {
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// rebuild ourselves because query changed.
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});
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}
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void _onSearchBodyChanged() {
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setState(() {
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// rebuild ourselves because search body changed.
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});
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}
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@override
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Widget build(BuildContext context) {
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final theme = widget.delegate.appBarTheme(context);
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Widget body;
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switch (widget.delegate.currentBody) {
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case SearchBody.suggestions:
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body = KeyedSubtree(
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key: ValueKey<SearchBody>(SearchBody.suggestions),
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child: widget.delegate.buildSuggestions(context),
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);
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break;
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case SearchBody.results:
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body = KeyedSubtree(
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key: ValueKey<SearchBody>(SearchBody.results),
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child: widget.delegate.buildResults(context),
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);
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break;
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}
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return Scaffold(
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appBar: AppBar(
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backgroundColor: theme.primaryColor,
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iconTheme: theme.primaryIconTheme,
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textTheme: theme.primaryTextTheme,
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brightness: theme.primaryColorBrightness,
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leading: widget.delegate.buildLeading(context),
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title: TextField(
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controller: widget.delegate.queryTextController,
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focusNode: focusNode,
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style: theme.textTheme.headline6,
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textInputAction: TextInputAction.search,
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onSubmitted: (_) => widget.delegate.showResults(context),
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decoration: InputDecoration(
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border: InputBorder.none,
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hintText: MaterialLocalizations.of(context).searchFieldLabel,
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hintStyle: theme.inputDecorationTheme.hintStyle,
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),
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),
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actions: widget.delegate.buildActions(context),
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),
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body: AnimatedSwitcher(
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duration: const Duration(milliseconds: 300),
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child: body,
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),
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);
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}
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}
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