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Liu Yanbo
committed
add date picker model factory method
1 parent 01b97d2 commit e4ed067

8 files changed

+548
-339
lines changed

‎.idea/workspace.xml

+276-69
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‎CHANGELOG.md

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## [0.0.1] - TODO: Add release date.
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## [0.1.0] - initial submit
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* TODO: Describe initial release.

‎README.md

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# flutter_datetime_picker
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3-
A new Flutter package.
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A flutter date time picker
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## Getting Started
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‎example/lib/main.dart

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@@ -39,14 +39,11 @@ class HomePage extends StatelessWidget {
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context,
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showTitleActions: true,
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locale: 'zh',
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initialYear: 2018,
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initialMonth: 6,
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initialDate: 21,
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onChanged: (year, month, day) {
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print('change $year-$month-$day');
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onChanged: (date) {
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print('change $date');
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},
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onConfirm: (year, month, day) {
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print('confirm $year-$month-$day');
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onConfirm: (date) {
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print('confirm $date');
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},
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);
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},
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);
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}
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}
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class hello extends StatefulWidget {
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@override
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_helloState createState() => _helloState();
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}
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class _helloState extends State<hello> {
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@override
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void initState() {
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// TODO: implement initState
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super.initState();
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}
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@override
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void dispose() {
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// TODO: implement dispose
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super.dispose();
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}
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@override
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void didUpdateWidget(hello oldWidget) {
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// TODO: implement didUpdateWidget
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super.didUpdateWidget(oldWidget);
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}
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@override
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void didChangeDependencies() {
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// TODO: implement didChangeDependencies
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super.didChangeDependencies();
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}
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@override
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Widget build(BuildContext context) {
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return Scaffold(
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appBar: AppBar(
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title: Text(''),
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),
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);
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}
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}

‎flutter_datetime_picker.iml

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@@ -12,6 +12,7 @@
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<excludeFolder url="file://$MODULE_DIR$/example/.dart_tool" />
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<excludeFolder url="file://$MODULE_DIR$/example/.pub" />
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<excludeFolder url="file://$MODULE_DIR$/example/build" />
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<excludeFolder url="file://$MODULE_DIR$/example/ios/Flutter/flutter_assets/packages" />
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</content>
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<orderEntry type="jdk" jdkName="Android API 25 Platform" jdkType="Android SDK" />
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<orderEntry type="sourceFolder" forTests="false" />

‎lib/dateModel.dart

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abstract class BasePickerModel {
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String leftStringAtIndex(int index);
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String middleStringAtIndex(int index);
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String rightStringAtIndex(int index);
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void setLeftIndex(int index);
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void setMiddleIndex(int index);
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void setRightIndex(int index);
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int currentLeftIndex();
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int currentMiddleIndex();
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int currentRightIndex();
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DateTime finalTime();
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}
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class CommonPickerModel extends BasePickerModel {
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List<String> leftList;
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List<String> middleList;
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List<String> rightList;
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DateTime currentTime;
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int _currentLeftIndex;
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int _currentMiddleIndex;
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int _currentRightIndex;
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String locale;
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CommonPickerModel({this.currentTime, locale}) : this.locale = locale ?? 'cn';
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@override
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String leftStringAtIndex(int index) {
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return null;
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}
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@override
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String middleStringAtIndex(int index) {
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return null;
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}
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@override
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String rightStringAtIndex(int index) {
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return null;
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}
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@override
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int currentLeftIndex() {
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return _currentLeftIndex;
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}
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@override
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int currentMiddleIndex() {
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return _currentMiddleIndex;
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}
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@override
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int currentRightIndex() {
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return _currentRightIndex;
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}
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@override
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void setLeftIndex(int index) {
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_currentLeftIndex = index;
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}
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@override
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void setMiddleIndex(int index) {
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_currentMiddleIndex = index;
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}
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@override
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void setRightIndex(int index) {
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_currentRightIndex = index;
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}
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@override
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DateTime finalTime() {}
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}
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class DatePickerModel extends CommonPickerModel {
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int maxYear;
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int minYear;
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List<int> _leapYearMonths = const <int>[1, 3, 5, 7, 8, 10, 12];
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int _calcDateCount() {
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final currentYear = _currentLeftIndex + minYear;
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final currentMonth = _currentMiddleIndex + 1;
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if (_leapYearMonths.contains(currentMonth)) {
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return 31;
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} else if (currentMonth == 2) {
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if ((currentYear % 4 == 0 && currentYear % 100 != 0) || currentYear % 400 == 0) {
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return 29;
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}
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return 28;
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}
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return 30;
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}
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DatePickerModel({this.maxYear = 2050, this.minYear = 1970, DateTime currentTime, String locale})
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: super(currentTime: currentTime ?? DateTime.now(), locale: locale) {
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_currentLeftIndex = this.currentTime.year - minYear;
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_currentMiddleIndex = this.currentTime.month - 1;
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_currentRightIndex = this.currentTime.day - 1;
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this.leftList = List.generate(maxYear - minYear + 1, (int index) {
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return '${minYear + index}${_localeYear()}';
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});
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this.middleList = List.generate(12, (int index) {
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return '${index + 1}${_localeMonth()}';
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});
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this.rightList = List.generate(_calcDateCount(), (int index) {
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return '${index + 1}${_localeDay()}';
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});
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}
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@override
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String leftStringAtIndex(int index) {
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if (index >= 0 && index < leftList.length) {
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return leftList[index];
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} else {
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return null;
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}
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}
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@override
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String middleStringAtIndex(int index) {
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if (index >= 0 && index < middleList.length) {
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return middleList[index];
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} else {
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return null;
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}
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}
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@override
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String rightStringAtIndex(int index) {
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if (index >= 0 && index < rightList.length) {
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return rightList[index];
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} else {
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return null;
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}
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}
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String _localeYear() {
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if (locale.matchAsPrefix('cn') == null) {
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return '';
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} else {
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return '年';
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}
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}
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String _localeMonth() {
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if (locale.matchAsPrefix('cn') == null) {
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return '';
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} else {
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return '月';
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}
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}
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String _localeDay() {
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if (locale.matchAsPrefix('cn') == null) {
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return '';
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} else {
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return '日';
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}
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}
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@override
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DateTime finalTime() {
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final year = _currentLeftIndex + minYear;
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final month = _currentMiddleIndex + 1;
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final day = _currentRightIndex + 1;
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return DateTime(year, month, day);
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}
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}

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