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FLUT-933401 - [Feature] Updated range selector code snippet #1103

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FLUT-933401 - [Feature] Updated range selector code snippet #1103

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106 changes: 51 additions & 55 deletions Flutter/range-selector/range-controller.md
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Original file line number Diff line number Diff line change
Expand Up @@ -113,7 +113,6 @@ We have provided built-in support for selecting the chart segments based on the

SfRangeValues _values = SfRangeValues(DateTime(2010, 03, 01), DateTime(2010, 06, 01));
RangeController _rangeController;
List<int> selectedItems;

@override
void initState() {
Expand Down Expand Up @@ -143,62 +142,59 @@ final List<Data> chartData = <Data>[

@override
Widget build(BuildContext context) {
selectedItems = <int>[];
for (int i = 0; i < chartData.length; i++) {
if (chartData[i].x.millisecondsSinceEpoch >=
_rangeController.start.millisecondsSinceEpoch &&
chartData[i].x.millisecondsSinceEpoch <=
_rangeController.end.millisecondsSinceEpoch) {
selectedItems.add(chartData.indexOf(chartData[i]));
}
}

return Scaffold(
body: Center(
child: SfRangeSelector(
min: DateTime(2010, 01, 01),
max: DateTime(2010, 09, 01),
interval: 2,
dateIntervalType: DateIntervalType.months,
dateFormat: DateFormat.yM(),
showTicks: true,
showLabels: true,
controller: _rangeController,
child: Container(
height: 130,
child: SfCartesianChart(
margin: const EdgeInsets.all(0),
primaryXAxis: DateTimeAxis(minimum: DateTime(2010, 01, 01),
maximum: DateTime(2010, 09, 01),
isVisible: false),
primaryYAxis: NumericAxis(isVisible: false),
plotAreaBorderWidth: 0,
plotAreaBackgroundColor: Colors.transparent,
series: <ColumnSeries<Data, DateTime>>[
ColumnSeries<Data, DateTime>(
initialSelectedDataIndexes: selectedItems,
selectionSettings: SelectionSettings(
enable: true,
unselectedOpacity: 0,
selectedBorderColor: const Color.fromRGBO(
0, 178, 206, 1),
selectedColor: const Color.fromRGBO(0, 178, 206, 1),
unselectedColor: Colors.transparent,
selectionController: _rangeController),
color: const Color.fromRGBO(255, 255, 255, 0),
dashArray: <double>[5, 4],
borderColor: const Color.fromRGBO(194, 194, 194, 1),
animationDuration: 0,
borderWidth: 1,
dataSource: chartData,
xValueMapper: (Data sales, int index) => sales.x,
yValueMapper: (Data sales, int index) => sales.y)
],
),
return Scaffold(
body: Center(
child: SfRangeSelector(
min: DateTime(2010, 01, 01),
max: DateTime(2010, 09, 01),
interval: 2,
dateIntervalType: DateIntervalType.months,
dateFormat: DateFormat.yM(),
showTicks: true,
showLabels: true,
controller: _rangeController,
onChanged: (SfRangeValues values) {
setState(() {});
},
child: SizedBox(
height: 130,
child: SfCartesianChart(
margin: EdgeInsets.zero,
primaryXAxis: DateTimeAxis(
minimum: DateTime(2010, 01, 01),
maximum: DateTime(2010, 09, 01),
isVisible: false,
),
primaryYAxis: const NumericAxis(isVisible: false),
plotAreaBorderWidth: 0,
plotAreaBackgroundColor: Colors.transparent,
series: <ColumnSeries<Data, DateTime>>[
ColumnSeries<Data, DateTime>(
dataSource: chartData,
selectionBehavior: SelectionBehavior(
selectionController: _rangeController,
),
xValueMapper: (Data sales, int index) => sales.x,
yValueMapper: (Data sales, int index) => sales.y,
pointColorMapper: (Data sales, int index) {
if (sales.x.isAfter(_rangeController.start) &&
sales.x.isBefore(_rangeController.end)) {
return const Color.fromRGBO(0, 178, 206, 1);
}
return Colors.transparent;
},
color: const Color.fromRGBO(255, 255, 255, 0),
dashArray: const <double>[5, 4],
borderColor: const Color.fromRGBO(194, 194, 194, 1),
animationDuration: 0,
borderWidth: 1,
),
],
),
)
);
),
),
),
);
}

{% endhighlight %}
Expand Down