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Code Issues Releases Wiki Activity

Adding no-result display to search screen. (#57)

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This commit is contained in:
Andrew Brogdon
2019-03-18 08:41:16 -07:00
committed by GitHub
parent cf95d2c3a3
commit be35972637
2 changed files with 35 additions and 23 deletions
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49
veggieseasons/lib/screens/search.dart
View File

@@ -17,47 +17,58 @@ class SearchScreen extends StatefulWidget {
} }
class _SearchScreenState extends State<SearchScreen> { class _SearchScreenState extends State<SearchScreen> {
final _controller = TextEditingController(); final controller = TextEditingController();
final _focusNode = FocusNode(); final focusNode = FocusNode();
String _terms = ''; String terms = '';
@override @override
void initState() { void initState() {
super.initState(); super.initState();
_controller.addListener(_onTextChanged); controller.addListener(_onTextChanged);
} }
@override @override
void dispose() { void dispose() {
_focusNode.dispose(); focusNode.dispose();
super.dispose(); super.dispose();
} }
void _onTextChanged() { void _onTextChanged() {
setState(() => _terms = _controller.text); setState(() => terms = controller.text);
} }
Widget _createSearchBox() { Widget _createSearchBox() {
return Padding( return Padding(
padding: const EdgeInsets.all(8.0), padding: const EdgeInsets.all(8.0),
child: SearchBar( child: SearchBar(
controller: _controller, controller: controller,
focusNode: _focusNode, focusNode: focusNode,
), ),
); );
} }
List<Widget> _generateVeggieRows(List<Veggie> veggies) { Widget _buildSearchResults(List<Veggie> veggies) {
final cards = new List<Widget>(); if (veggies.isEmpty) {
return Center(
for (Veggie veggie in veggies) { child: Padding(
cards.add(Padding( padding: const EdgeInsets.symmetric(horizontal: 24.0),
padding: EdgeInsets.only(left: 16.0, right: 16.0, bottom: 24.0), child: Text(
child: VeggieHeadline(veggie), 'No veggies matching your search terms were found.',
)); style: Styles.headlineDescription,
),
),
);
} }
return cards; return ListView.builder(
itemCount: veggies.length,
itemBuilder: (context, i) {
return Padding(
padding: EdgeInsets.only(left: 16.0, right: 16.0, bottom: 24.0),
child: VeggieHeadline(veggies[i]),
);
},
);
} }
@override @override
@@ -75,9 +86,7 @@ class _SearchScreenState extends State<SearchScreen> {
children: [ children: [
_createSearchBox(), _createSearchBox(),
Expanded( Expanded(
child: ListView( child: _buildSearchResults(model.searchVeggies(terms)),
children: _generateVeggieRows(model.searchVeggies(_terms)),
),
), ),
], ],
), ),

5
veggieseasons/lib/widgets/search_bar.dart
View File

@@ -29,10 +29,12 @@ class SearchBar extends StatelessWidget {
), ),
child: Row( child: Row(
children: [ children: [
Icon( ExcludeSemantics(
child: Icon(
CupertinoIcons.search, CupertinoIcons.search,
color: Styles.searchIconColor, color: Styles.searchIconColor,
), ),
),
Expanded( Expanded(
child: CupertinoTextField( child: CupertinoTextField(
controller: controller, controller: controller,
@@ -47,6 +49,7 @@ class SearchBar extends StatelessWidget {
}, },
child: Icon( child: Icon(
CupertinoIcons.clear_thick_circled, CupertinoIcons.clear_thick_circled,
semanticLabel: 'Clear search terms',
color: Styles.searchIconColor, color: Styles.searchIconColor,
), ),
), ),