libre_gps_parser/lib/timezone.dart

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2019-06-27 17:29:40 -07:00
import 'package:flutter/cupertino.dart';
import 'package:flutter/material.dart';
import 'global_helper_functions.dart';
import 'timezones.dart';
class TimeZone extends StatefulWidget {
final int timeOffSet;
final int timeOffSetTime;
final int isAutoTimeOffSet;
final ValueChanged<int> parentAction;
TimeZone({
Key key,
this.timeOffSet,
this.timeOffSetTime,
this.parentAction,
this.isAutoTimeOffSet,
}) : super(key: key);
@override
_TimeZoneState createState() => _TimeZoneState();
}
class _TimeZoneState extends State<TimeZone> {
@override
Widget build(BuildContext context) {
int _localOffSet = 5;
final int now = newTimeStamp();
final int elapsedHours = ((now - widget.timeOffSetTime) / 3600).round();
final String offSet = (widget.timeOffSet < 0)
? '(UTC${widget.timeOffSet})'
: '(UTC+${widget.timeOffSet})';
final double textHeight = 1.5;
return Row(
children: <Widget> [
Expanded(
flex: 7,
child: InkWell(
child: Column(
mainAxisAlignment: MainAxisAlignment.center,
children: <Widget> [
Text(
'Time Offset:',
style: TextStyle(
height: textHeight,
color: candyApple,
fontSize: 16,
),
),
RichText(
text: TextSpan(
children: <TextSpan>[
TextSpan(
text: (widget.timeOffSet != 2000) ? '$offSet' : 'INVALID',
style: TextStyle(
height: textHeight,
color: Colors.black,
fontSize: 16,
),
),
TextSpan(
text: (widget.timeOffSet != 2000) ? ' minutes, ' : '',
style: TextStyle(
height: textHeight,
color: Colors.black,
fontSize: 16,
fontStyle: FontStyle.italic,
),
),
],
),
),
RichText(
text: TextSpan(
children: <TextSpan>[
TextSpan(
text: (widget.isAutoTimeOffSet == 1) ? 'as of' : 'MANUAL SETTING',
style: TextStyle(
height: textHeight,
color: candyApple,
fontSize: 16,
),
),
TextSpan(
text: (widget.isAutoTimeOffSet == 1) ? ' $elapsedHours' : '',
style: TextStyle(
height: textHeight,
color: Colors.black,
fontSize: 16,
),
),
TextSpan(
text: (widget.isAutoTimeOffSet == 1) ? ' hrs' : '',
style: TextStyle(
height: textHeight,
color: Colors.black,
fontSize: 16,
fontStyle: FontStyle.italic,
),
),
TextSpan(
text: (widget.isAutoTimeOffSet == 1) ? ' ago' : '',
style: TextStyle(
height: textHeight,
color: Colors.black,
fontSize: 16,
),
),
],
),
),
],
),
onTap: () {
showDialog(
context: context,
builder: (BuildContext context) {
final FixedExtentScrollController scrollController =
FixedExtentScrollController(initialItem: _getTimeZoneListIndex());
return AlertDialog(
backgroundColor: ivory,
shape: RoundedRectangleBorder(
borderRadius: BorderRadius.all(Radius.circular(6.0)),
),
content: Column(
mainAxisSize: MainAxisSize.min,
children: <Widget>[
ButtonTheme(
height: 75,
shape: RoundedRectangleBorder(
borderRadius: BorderRadius.all(Radius.circular(6.0)),
),
child: RaisedButton(
onPressed: () {
if (!mounted) {
return;
} else {
Navigator.of(context).pop();
if (_localOffSet != 5) {
widget.parentAction(_localOffSet);
}
}
},
color: candyApple,
child: Row(
mainAxisAlignment: MainAxisAlignment.spaceAround,
children: <Widget>[
Icon(
Icons.save,
size: 48.0,
color: Colors.white,
),
Text(
'save tz offset',
style: TextStyle(
height: textHeight,
color: Colors.white,
fontSize: 24,
),
),
],
),
),
),
Container(
height: (MediaQuery.of(context).size.height * .5),
child: CupertinoPicker(
scrollController: scrollController,
backgroundColor: ivory,
itemExtent: 100,
looping: true,
onSelectedItemChanged: (int index) {
if (!mounted) {
return;
} else {
setState(() {
_localOffSet = timeZoneList[index]['offset'];
});
}
},
children: List<Widget>.generate(timeZoneList.length, (int index) {
return Column(
children: <Widget>[
Container(
height: 10,
color: ivory,
),
Container(
alignment: Alignment(0.0,0.0),
height: 80,
width: (MediaQuery.of(context).size.width * .9),
decoration: BoxDecoration(
color: peacockBlue,
border: Border.all(
width: 2.0,
),
borderRadius: BorderRadius.all(Radius.circular(6.0)),
),
child: Row(
mainAxisAlignment: MainAxisAlignment.spaceEvenly,
children: <Widget>[
Text(
_parseTimeZoneOffSet(timeZoneList[index]['offset']),
style: TextStyle(
height: textHeight,
color: Colors.white,
fontSize: 24,
),
),
Text(
'${timeZoneList[index]['tz']}',
style: TextStyle(
height: textHeight,
color: Colors.white,
fontSize: 24,
),
),
],
),
),
Container(
height: 10,
color: ivory,
),
],
);
}),
),
),
]
),
);
},
);
}
),
),
Expanded(
flex: 3,
child: Container(
decoration: BoxDecoration(
border: Border(
left: BorderSide(
width: 1.0,
color: Colors.black,
),
),
),
child: InkWell(
child: Icon(
Icons.info,
size: 48.0,
color: Colors.black,
),
/*
onTap: () {
urlLaunch('https://en.wikipedia.org/wiki/List_of_time_zone_abbreviations');
}
*/
onTap: () {
showDialog(
context: context,
builder: (BuildContext context) {
return AlertDialog(
backgroundColor: ivory,
shape: RoundedRectangleBorder(
borderRadius: BorderRadius.all(Radius.circular(6.0)),
),
content: Column(
mainAxisSize: MainAxisSize.min,
children: <Widget>[
Text(
'The timezone offset should be set and refreshed automatically, '
'by querying an api from teleport. However, because the api is '
'free, the query is only refreshed once a week.\n'
'Additionally, in some cases the result is invalid. Tap the '
'left side of TimeZone Widget to manually set the timezone offset.',
textAlign: TextAlign.center,
),
Container(
margin: EdgeInsets.only(
top: 40,
bottom: 10,
),
child: ButtonTheme(
height: 75,
shape: RoundedRectangleBorder(
borderRadius: BorderRadius.all(Radius.circular(6.0)),
),
child: RaisedButton(
color: peacockBlue,
child: Column(
children: <Widget>[
Container(
width: 150,
margin: EdgeInsets.only(
top: 10,
),
child: Row(
mainAxisAlignment: MainAxisAlignment.spaceAround,
children: <Widget>[
Text(
'List',
style: TextStyle(
height: textHeight,
color: Colors.white,
fontSize: 24,
),
),
Icon(
Icons.open_in_browser,
size: 48,
color: Colors.white,
),
],
),
),
Container(
margin: EdgeInsets.only(
bottom: 15,
),
child: Text(
'Of TimeZones',
style: TextStyle(
height: textHeight,
color: Colors.white,
fontSize: 24,
),
),
),
],
),
onPressed: () {
Navigator.of(context).pop();
urlLaunch('https://en.wikipedia.org/wiki/List_of_time_zone_abbreviations');
}
),
),
),
],
),
);
}
);
},
),
),
),
],
);
}
int _getTimeZoneListIndex() {
// 2001 is a magic number which means auto
// as in the tz offset is automatically set
return timeZoneList.indexOf(timeZoneList.singleWhere((timeZone) => timeZone['offset'] == ((widget.isAutoTimeOffSet == 1) ? 2001 : widget.timeOffSet)));
}
String _parseTimeZoneOffSet(int offset) {
if (offset < 2000) {
return offset.toString();
} else if (offset == 2000) {
return 'INVALID';
} else if (offset == 2001) {
return 'AUTO';
}
}
}