searchable_dropdown 1.1.3 
searchable_dropdown: ^1.1.3 copied to clipboard
Widget to let the user search through a keyword string typed on a customizable keyboard in a single or multiple choices list presented as a dropdown in a dialog box or a menu.
import 'package:flutter/material.dart';
import 'package:flutter/services.dart';
import 'package:searchable_dropdown/searchable_dropdown.dart';
class ExampleNumber {
int number;
static final Map<int, String> map = {
0: "zero",
1: "one",
2: "two",
3: "three",
4: "four",
5: "five",
6: "six",
7: "seven",
8: "eight",
9: "nine",
10: "ten",
11: "eleven",
12: "twelve",
13: "thirteen",
14: "fourteen",
15: "fifteen",
};
String get numberString {
return (map.containsKey(number) ? map[number] : "unknown");
}
ExampleNumber(this.number);
String toString() {
return ("$number $numberString");
}
static List<ExampleNumber> get list {
return (map.keys.map((num) {
return (ExampleNumber(num));
})).toList();
}
}
void main() => runApp(MyApp());
class MyApp extends StatefulWidget {
@override
_MyAppState createState() => _MyAppState();
}
class _MyAppState extends State<MyApp> {
bool asTabs = false;
String selectedValue;
String preselectedValue = "dolor sit";
ExampleNumber selectedNumber;
List<int> selectedItems = [];
final List<DropdownMenuItem> items = [];
static const String appTitle = "Search Choices demo";
final String loremIpsum =
"Lorem ipsum dolor sit amet, consectetur adipiscing elit, sed do eiusmod tempor incididunt ut labore et dolore magna aliqua. Ut enim ad minim veniam, quis nostrud exercitation ullamco laboris nisi ut aliquip ex ea commodo consequat. Duis aute irure dolor in reprehenderit in voluptate velit esse cillum dolore eu fugiat nulla pariatur. Excepteur sint occaecat cupidatat non proident, sunt in culpa qui officia deserunt mollit anim id est laborum.";
@override
void initState() {
String wordPair = "";
loremIpsum
.toLowerCase()
.replaceAll(",", "")
.replaceAll(".", "")
.split(" ")
.forEach((word) {
if (wordPair.isEmpty) {
wordPair = word + " ";
} else {
wordPair += word;
if (items.indexWhere((item) {
return (item.value == wordPair);
}) ==
-1) {
items.add(DropdownMenuItem(
child: Text(wordPair),
value: wordPair,
));
}
wordPair = "";
}
});
super.initState();
}
List<Widget> get appBarActions {
return ([
Center(child: Text("Tabs:")),
Switch(
activeColor: Colors.white,
value: asTabs,
onChanged: (value) {
setState(() {
asTabs = value;
});
},
)
]);
}
@override
Widget build(BuildContext context) {
Map<String, Widget> widgets;
widgets = {
"Single dialog": SearchableDropdown.single(
items: items,
value: selectedValue,
hint: "Select one",
searchHint: "Select one",
onChanged: (value) {
setState(() {
selectedValue = value;
});
},
isExpanded: true,
),
"Multi dialog": SearchableDropdown.multiple(
items: items,
selectedItems: selectedItems,
hint: Padding(
padding: const EdgeInsets.all(12.0),
child: Text("Select any"),
),
searchHint: "Select any",
onChanged: (value) {
setState(() {
selectedItems = value;
});
},
closeButton: (selectedItems) {
return (selectedItems.isNotEmpty
? "Save ${selectedItems.length == 1 ? '"' + items[selectedItems.first].value.toString() + '"' : '(' + selectedItems.length.toString() + ')'}"
: "Save without selection");
},
isExpanded: true,
),
"Single done button dialog": SearchableDropdown.single(
items: items,
value: selectedValue,
hint: "Select one",
searchHint: "Select one",
onChanged: (value) {
setState(() {
selectedValue = value;
});
},
doneButton: "Done",
displayItem: (item, selected) {
return (Row(children: [
selected
? Icon(
Icons.radio_button_checked,
color: Colors.grey,
)
: Icon(
Icons.radio_button_unchecked,
color: Colors.grey,
),
SizedBox(width: 7),
Expanded(
child: item,
),
]));
},
isExpanded: true,
),
"Multi custom display dialog": SearchableDropdown.multiple(
items: items,
selectedItems: selectedItems,
hint: Padding(
padding: const EdgeInsets.all(12.0),
child: Text("Select any"),
),
searchHint: "Select any",
onChanged: (value) {
setState(() {
selectedItems = value;
});
},
displayItem: (item, selected) {
return (Row(children: [
selected
? Icon(
Icons.check,
color: Colors.green,
)
: Icon(
Icons.check_box_outline_blank,
color: Colors.grey,
),
SizedBox(width: 7),
Expanded(
child: item,
),
]));
},
selectedValueWidgetFn: (item) {
return (Center(
child: Card(
shape: RoundedRectangleBorder(
borderRadius: BorderRadius.circular(10),
side: BorderSide(
color: Colors.brown,
width: 0.5,
),
),
margin: EdgeInsets.all(12),
child: Padding(
padding: const EdgeInsets.all(8),
child: Text(item.toString()),
))));
},
doneButton: (selectedItemsDone, doneContext) {
return (RaisedButton(
onPressed: () {
Navigator.pop(doneContext);
setState(() {});
},
child: Text("Save")));
},
closeButton: null,
style: TextStyle(fontStyle: FontStyle.italic),
searchFn: (String keyword, items) {
List<int> ret = List<int>();
if (keyword != null && items != null && keyword.isNotEmpty) {
keyword.split(" ").forEach((k) {
int i = 0;
items.forEach((item) {
if (k.isNotEmpty &&
(item.value
.toString()
.toLowerCase()
.contains(k.toLowerCase()))) {
ret.add(i);
}
i++;
});
});
}
if (keyword.isEmpty) {
ret = Iterable<int>.generate(items.length).toList();
}
return (ret);
},
clearIcon: Icon(Icons.clear_all),
icon: Icon(Icons.arrow_drop_down_circle),
label: "Label for multi",
underline: Container(
height: 1.0,
decoration: BoxDecoration(
border:
Border(bottom: BorderSide(color: Colors.teal, width: 3.0))),
),
iconDisabledColor: Colors.brown,
iconEnabledColor: Colors.indigo,
isExpanded: true,
),
"Multi select 3 dialog": SearchableDropdown.multiple(
items: items,
selectedItems: selectedItems,
hint: "Select 3 items",
searchHint: "Select 3",
validator: (selectedItemsForValidator) {
if (selectedItemsForValidator.length != 3) {
return ("Must select 3");
}
return (null);
},
onChanged: (value) {
setState(() {
selectedItems = value;
});
},
doneButton: (selectedItemsDone, doneContext) {
return (RaisedButton(
onPressed: selectedItemsDone.length != 3
? null
: () {
Navigator.pop(doneContext);
setState(() {});
},
child: Text("Save")));
},
closeButton: (selectedItems) {
return (selectedItems.length == 3 ? "Ok" : null);
},
isExpanded: true,
),
"Single menu": SearchableDropdown.single(
items: items,
value: selectedValue,
hint: "Select one",
searchHint: null,
onChanged: (value) {
setState(() {
selectedValue = value;
});
},
dialogBox: false,
isExpanded: true,
menuConstraints: BoxConstraints.tight(Size.fromHeight(350)),
),
"Multi menu": SearchableDropdown.multiple(
items: items,
selectedItems: selectedItems,
hint: "Select any",
searchHint: "",
doneButton: "Close",
closeButton: SizedBox.shrink(),
onChanged: (value) {
setState(() {
selectedItems = value;
});
},
dialogBox: false,
isExpanded: true,
menuConstraints: BoxConstraints.tight(Size.fromHeight(350)),
),
"Multi menu select all/none": SearchableDropdown.multiple(
items: items,
selectedItems: selectedItems,
hint: "Select any",
searchHint: "Select any",
onChanged: (value) {
setState(() {
selectedItems = value;
});
},
dialogBox: false,
closeButton: (selectedItemsClose) {
return Row(
mainAxisAlignment: MainAxisAlignment.spaceBetween,
children: <Widget>[
RaisedButton(
onPressed: () {
setState(() {
selectedItems.clear();
selectedItems.addAll(
Iterable<int>.generate(items.length).toList());
});
},
child: Text("Select all")),
RaisedButton(
onPressed: () {
setState(() {
selectedItems.clear();
});
},
child: Text("Select none")),
],
);
},
isExpanded: true,
menuConstraints: BoxConstraints.tight(Size.fromHeight(350)),
),
"Multi dialog select all/none without clear": SearchableDropdown.multiple(
items: items,
selectedItems: selectedItems,
hint: "Select any",
searchHint: "Select any",
displayClearIcon: false,
onChanged: (value) {
setState(() {
selectedItems = value;
});
},
dialogBox: true,
closeButton: (selectedItemsClose) {
return Row(
mainAxisAlignment: MainAxisAlignment.spaceBetween,
children: <Widget>[
RaisedButton(
onPressed: () {
setState(() {
selectedItems.clear();
selectedItems.addAll(
Iterable<int>.generate(items.length).toList());
});
},
child: Text("Select all")),
RaisedButton(
onPressed: () {
setState(() {
selectedItems.clear();
});
},
child: Text("Select none")),
],
);
},
isExpanded: true,
),
"Single dialog custom keyboard": SearchableDropdown.single(
items: Iterable<int>.generate(20).toList().map((i) {
return (DropdownMenuItem(
child: Text(i.toString()),
value: i.toString(),
));
}).toList(),
value: selectedValue,
hint: "Select one number",
searchHint: "Select one number",
onChanged: (value) {
setState(() {
selectedValue = value;
});
},
dialogBox: true,
keyboardType: TextInputType.number,
isExpanded: true,
),
"Single dialog object": SearchableDropdown.single(
items: ExampleNumber.list.map((exNum) {
return (DropdownMenuItem(
child: Text(exNum.numberString), value: exNum));
}).toList(),
value: selectedNumber,
hint: "Select one number",
searchHint: "Select one number",
onChanged: (value) {
setState(() {
selectedNumber = value;
});
},
dialogBox: true,
isExpanded: true,
),
"Single dialog overflow": SearchableDropdown.single(
items: [
DropdownMenuItem(
child: Text(
"way too long text for a smartphone at least one that goes in a normal sized pair of trousers but maybe not for a gigantic screen like there is one at my cousin's home in a very remote country where I wouldn't want to go right now"),
value:
"way too long text for a smartphone at least one that goes in a normal sized pair of trousers but maybe not for a gigantic screen like there is one at my cousin's home in a very remote country where I wouldn't want to go right now",
)
],
value: "",
hint: "Select one",
searchHint: "Select one",
onChanged: (value) {
setState(() {
selectedValue = value;
});
},
dialogBox: true,
isExpanded: true,
),
"Single dialog readOnly": SearchableDropdown.single(
items: [
DropdownMenuItem(
child: Text("one item"),
value: "one item",
)
],
value: "one item",
hint: "Select one",
searchHint: "Select one",
disabledHint: "Disabled",
onChanged: (value) {
setState(() {
selectedValue = value;
});
},
dialogBox: true,
isExpanded: true,
readOnly: true,
),
"Single dialog disabled": SearchableDropdown.single(
items: [
DropdownMenuItem(
child: Text("one item"),
value: "one item",
)
],
value: "one item",
hint: "Select one",
searchHint: "Select one",
disabledHint: "Disabled",
onChanged: null,
dialogBox: true,
isExpanded: true,
),
"Historical example": SearchableDropdown(
items: items,
value: selectedValue,
hint: Text('Select One'),
searchHint: new Text(
'Select One',
style: new TextStyle(fontSize: 20),
),
onChanged: (value) {
setState(() {
selectedValue = value;
});
},
isExpanded: true,
),
"Update value from outside the plugin": Column(
children: [
SearchableDropdown(
items: items,
value: selectedValue,
hint: Text('Select One'),
searchHint: new Text(
'Select One',
style: new TextStyle(fontSize: 20),
),
onChanged: (value) {
setState(() {
selectedValue = value;
});
},
isExpanded: true,
),
FlatButton(
child: Text("Select $preselectedValue"),
onPressed: () {
setState(() {
selectedValue = preselectedValue;
});
},
),
],
),
};
return MaterialApp(
home: asTabs
? DefaultTabController(
length: widgets.length,
child: Scaffold(
appBar: AppBar(
title: const Text(appTitle),
actions: appBarActions,
bottom: TabBar(
isScrollable: true,
tabs: Iterable<int>.generate(widgets.length)
.toList()
.map((i) {
return (Tab(
text: (i + 1).toString(),
));
}).toList(), //widgets.keys.toList().map((k){return(Tab(text: k));}).toList(),
),
),
body: Container(
padding: EdgeInsets.all(20),
child: TabBarView(
children: widgets
.map((k, v) {
return (MapEntry(
k,
SingleChildScrollView(
scrollDirection: Axis.vertical,
child: Column(children: [
Text(k),
SizedBox(
height: 20,
),
v,
]),
)));
})
.values
.toList(),
),
),
),
)
: Scaffold(
appBar: AppBar(
title: const Text(appTitle),
actions: appBarActions,
),
body: SingleChildScrollView(
scrollDirection: Axis.vertical,
child: Column(
children: widgets
.map((k, v) {
return (MapEntry(
k,
Center(
child: Card(
shape: RoundedRectangleBorder(
borderRadius: BorderRadius.circular(10),
side: BorderSide(
color: Colors.grey,
width: 1.0,
),
),
margin: EdgeInsets.all(20),
child: Padding(
padding: const EdgeInsets.all(20.0),
child: Column(
children: <Widget>[
Text("$k:"),
v,
],
),
)))));
})
.values
.toList(),
),
),
),
);
}
}Metadata
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likes
40
points
145
downloads
Publisher
unverified uploader
Weekly Downloads
Metadata
Widget to let the user search through a keyword string typed on a customizable keyboard in a single or multiple choices list presented as a dropdown in a dialog box or a menu.
Repository (GitHub)
View/report issues
License
MIT (license)
