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web/charts: Migrate to null safety (#921)

This commit is contained in:
Brett Morgan
2021-10-08 16:39:37 +11:00
committed by GitHub
parent d14e79b833
commit 8932e60976
106 changed files with 355 additions and 346 deletions

View File

@@ -29,9 +29,9 @@ import 'package:charts_flutter/flutter.dart' as charts;
/// Also shows the option to provide a custom measure formatter.
class DatumLegendWithMeasures extends StatelessWidget {
final List<charts.Series<LinearSales, int>> seriesList;
final bool animate;
final bool? animate;
const DatumLegendWithMeasures(this.seriesList, {this.animate, Key key})
const DatumLegendWithMeasures(this.seriesList, {this.animate, Key? key})
: super(key: key);
factory DatumLegendWithMeasures.withSampleData() {
@@ -110,7 +110,7 @@ class DatumLegendWithMeasures extends StatelessWidget {
legendDefaultMeasure: charts.LegendDefaultMeasure.firstValue,
// Optionally provide a measure formatter to format the measure value.
// If none is specified the value is formatted as a decimal.
measureFormatter: (num value) {
measureFormatter: (num? value) {
return value == null ? '-' : '${value}k';
},
),