Added locale support.

Author: rogermedeirosdasilva

lib/date_picker_timeline.dart

@@ -15,6 +15,7 @@ class DatePickerTimeline extends StatefulWidget {
   DateTime currentDate;
   DateChangeListener onDateChange;
   int daysCount;
+  String locale;
 
   // Creates the DatePickerTimeline Widget
   DatePickerTimeline(
@@ -28,6 +29,7 @@ class DatePickerTimeline extends StatefulWidget {
     this.selectionColor = AppColors.defaultSelectionColor,
     this.daysCount = 50000,
     this.onDateChange,
+    this.locale,
   }) : super(key: key);
 
   @override
@@ -54,6 +56,7 @@ class _DatePickerState extends State<DatePickerTimeline> {
             monthTextStyle: widget.monthTextStyle,
             dateTextStyle: widget.dateTextStyle,
             dayTextStyle: widget.dayTextStyle,
+            locale: widget.locale,
             selectionColor:
                 isSelected ? widget.selectionColor : Colors.transparent,
             onDateSelected: (selectedDate) {

lib/date_widget.dart

@@ -14,14 +14,17 @@ class DateWidget extends StatelessWidget {
   final TextStyle monthTextStyle, dayTextStyle, dateTextStyle;
   final Color selectionColor;
   final DateSelectionCallback onDateSelected;
+  final String locale;
 
   DateWidget(
       {@required this.date,
       @required this.monthTextStyle,
       @required this.dayTextStyle,
       @required this.dateTextStyle,
       @required this.selectionColor,
-      this.onDateSelected});
+      this.onDateSelected,
+      this.locale,
+      });
 
   @override
   Widget build(BuildContext context) {
@@ -39,11 +42,11 @@ class DateWidget extends StatelessWidget {
             mainAxisAlignment: MainAxisAlignment.center,
             crossAxisAlignment: CrossAxisAlignment.center,
             children: <Widget>[
-              Text(new DateFormat("MMM").format(date).toUpperCase(), // Month
+              Text(new DateFormat("MMM", locale ?? 'en').format(date).toUpperCase(), // Month
                   style: monthTextStyle),
               Text(date.day.toString(), // Date
                   style: dateTextStyle),
-              Text(new DateFormat("E").format(date).toUpperCase(), // WeekDay
+              Text(new DateFormat("E", locale ?? 'en').format(date).toUpperCase(), // WeekDay
                   style: dayTextStyle)
             ],
           ),