:feat: Fixes issue #382: Added support for 3-Days week view

example/lib/widgets/week_view_widget.dart

@@ -16,6 +16,7 @@ class WeekViewWidget extends StatelessWidget {
       width: width,
       showWeekends: true,
       showLiveTimeLineInAllDays: true,
+      showThreeDaysView: true,
       eventArranger: SideEventArranger(maxWidth: 30),
       timeLineWidth: 65,
       scrollPhysics: const BouncingScrollPhysics(),

lib/src/extensions.dart

@@ -55,6 +55,7 @@ extension DateTimeExtensions on DateTime {
   List<DateTime> datesOfWeek({
     WeekDays start = WeekDays.monday,
     bool showWeekEnds = true,
+    bool showThreeDays = false,
   }) {
     // Here %7 ensure that we do not subtract >6 and <0 days.
     // Initial formula is,
@@ -63,21 +64,29 @@ extension DateTimeExtensions on DateTime {
     // But in WeekDays enum index ranges from 0 to 6 so we are
     // adding 1 in index. So, new formula with WeekDays is,
     //    difference = (weekdays - (start.index + 1))%7
+
+    // final startDay =
+    //     DateTime(year, month, day - (weekday - start.index - 1) % 7);
+    // // Generate weekdays with weekends or without weekends
+    // final days = List.generate(
+    //   7,
+    //   (index) => DateTime(startDay.year, startDay.month, startDay.day + index),
+    // )
+    //     .where(
+    //       (date) =>
+    //           showWeekEnds ||
+    //           (date.weekday != DateTime.saturday &&
+    //               date.weekday != DateTime.sunday),
+    //     )
+    //     .toList();
+
+    // Three days view
+    // final days = showThreeDays ? day : day - (weekday - start.index - 1) % 7;
+    // final startDay = DateTime(year, month, days);
     //
-    final startDay =
-        DateTime(year, month, day - (weekday - start.index - 1) % 7);
-    // Generate weekdays with weekends or without weekends
-    final days = List.generate(
-      7,
-      (index) => DateTime(startDay.year, startDay.month, startDay.day + index),
-    )
-        .where(
-          (date) =>
-              showWeekEnds ||
-              (date.weekday != DateTime.saturday &&
-                  date.weekday != DateTime.sunday),
-        )
-        .toList();
+    // return List.generate(showThreeDays ? 3 : 7, (index) {
+    //   return startDay.add(Duration(days: index));
+    // });
     return days;
   }
 

lib/src/week_view/_internal_week_view_page.dart

@@ -139,6 +139,10 @@ class InternalWeekViewPage<T extends Object?> extends StatefulWidget {
   /// Flag to display quarter hours
   final bool showQuarterHours;
 
+  /// Enable this flag to show 3-days view default is false.
+  /// i.e 7 days view
+  final bool showThreeDaysView;
+
   /// Emulate vertical line offset from hour line starts.
   final double emulateVerticalOffsetBy;
 
@@ -205,6 +209,7 @@ class InternalWeekViewPage<T extends Object?> extends StatefulWidget {
     required this.showWeekDayAtBottom,
     required this.showHalfHours,
     required this.showQuarterHours,
+    required this.showThreeDaysView,
     required this.emulateVerticalOffsetBy,
     required this.onTileDoubleTap,
     required this.endHour,

lib/src/week_view/week_view.dart

@@ -172,6 +172,10 @@ class WeekView<T extends Object?> extends StatefulWidget {
   /// saturday and sunday, only monday and tuesday will be visible in week view.
   final bool showWeekends;
 
+  /// Enable this flag to show 3-days view default is false.
+  /// i.e 7 days view
+  final bool showThreeDaysView;
+
   /// Defines which days should be displayed in one week.
   ///
   /// By default all the days will be visible.
@@ -287,6 +291,7 @@ class WeekView<T extends Object?> extends StatefulWidget {
     this.onDateTap,
     this.weekDays = WeekDays.values,
     this.showWeekends = true,
+    this.showThreeDaysView = false,
     this.startDay = WeekDays.monday,
     this.minuteSlotSize = MinuteSlotSize.minutes60,
     this.weekDetectorBuilder,
@@ -333,6 +338,10 @@ class WeekView<T extends Object?> extends StatefulWidget {
           endHour <= Constants.hoursADay || endHour < startHour,
           "End hour must be less than 24 or startHour must be less than endHour",
         ),
+        assert(!(showThreeDaysView && !showWeekends),
+            "For three days view, showWeekends should be true"),
+        assert(!(showThreeDaysView && weekDays.length != 7),
+            "For three days view, weekDays should not be set"),
         super(key: key);
 
   @override
@@ -526,6 +535,9 @@ class WeekViewState<T extends Object?> extends State<WeekView<T>> {
                           showWeekEnds: widget.showWeekends,
                         );
 
+                        // TODO(Shubham): Three days view
+                        // final dates = _getDatesOnWeek(index);
+
                         return ValueListenableBuilder(
                           valueListenable: _scrollConfiguration,
                           builder: (_, __, ___) => InternalWeekViewPage<T>(
@@ -573,6 +585,7 @@ class WeekViewState<T extends Object?> extends State<WeekView<T>> {
                             startHour: _startHour,
                             showHalfHours: widget.showHalfHours,
                             showQuarterHours: widget.showQuarterHours,
+                            showThreeDaysView: widget.showThreeDaysView,
                             emulateVerticalOffsetBy:
                                 widget.emulateVerticalOffsetBy,
                             showWeekDayAtBottom: widget.showWeekDayAtBottom,
@@ -631,7 +644,7 @@ class WeekViewState<T extends Object?> extends State<WeekView<T>> {
         "Make sure you are providing weekdays in initialization of "
         "WeekView. or showWeekends is true if you are providing only "
         "saturday or sunday in weekDays.");
-    _totalDaysInWeek = _weekDays.length;
+    _totalDaysInWeek = widget.showThreeDaysView ? 3 : _weekDays.length;
   }
 
   void _updateViewDimensions() {
@@ -724,7 +737,6 @@ class WeekViewState<T extends Object?> extends State<WeekView<T>> {
     } else if (_currentWeek.isAfter(_maxDate)) {
       _currentWeek = _maxDate;
     }
-
     _currentStartDate = _currentWeek.firstDayOfWeek(start: widget.startDay);
     _currentEndDate = _currentWeek.lastDayOfWeek(start: widget.startDay);
     _currentIndex =
@@ -790,6 +802,9 @@ class WeekViewState<T extends Object?> extends State<WeekView<T>> {
 
   /// Default builder for week number.
   Widget _defaultWeekNumberBuilder(DateTime date) {
+    if (widget.showThreeDaysView) {
+      return const SizedBox.shrink();
+    }
     final daysToAdd = DateTime.thursday - date.weekday;
     final thursday = daysToAdd > 0
         ? date.add(Duration(days: daysToAdd))
@@ -894,9 +909,11 @@ class WeekViewState<T extends Object?> extends State<WeekView<T>> {
         _currentStartDate = DateTime(
           _currentStartDate.year,
           _currentStartDate.month,
-          _currentStartDate.day + (index - _currentIndex) * 7,
+          _currentStartDate.day +
+              (index - _currentIndex) * (widget.showThreeDaysView ? 3 : 7),
         );
-        _currentEndDate = _currentStartDate.add(Duration(days: 6));
+        _currentEndDate = _currentStartDate
+            .add(Duration(days: widget.showThreeDaysView ? 2 : 6));
         _currentIndex = index;
       });
     }
@@ -1036,6 +1053,21 @@ class WeekViewState<T extends Object?> extends State<WeekView<T>> {
   void _scrollPageListener(ScrollController controller) {
     _lastScrollOffset = controller.offset;
   }
+
+  List<DateTime> _getDatesOnWeek(int index) {
+    if (widget.showThreeDaysView) {
+      return _currentStartDate.datesOfWeek(
+        start: widget.startDay,
+        showThreeDays: widget.showThreeDaysView,
+      );
+    } else {
+      return DateTime(
+        _minDate.year,
+        _minDate.month,
+        _minDate.day + (index * DateTime.daysPerWeek),
+      ).datesOfWeek(start: widget.startDay);
+    }
+  }
 }
 
 class WeekHeader {