Handling tap events on disabled dates in SfDateRangePicker

[Daksh]

Hello Syncfusion Support Team,

I'm currently using the SfDateRangePicker widget in my Flutter application and have a specific use case that I need assistance with.

Current Setup:

• I'm using selectableDayPredicate to disable certain dates based on my business logic
• The disabled dates are properly grayed out and non-selectable

Requirement: I need to detect when users tap on disabled dates so I can display contextual feedback (snackbar messages) explaining why those dates are unavailable.

What I've Tried:

1. Reviewed the official documentation for tap event callbacks
2. Examined the source code to understand the internal event handling
3. Tested onSelectionChanged callback, but it doesn't fire for disabled dates
4. Attempted using custom cellBuilder with GestureDetector, but the calendar's internal gesture handling takes precedence

Questions:

1. Is there a built-in way to capture tap events on disabled dates in SfDateRangePicker?
2. If not directly supported, what would be the recommended approach to achieve this functionality?
3. Are there any plans to add this feature in future releases?

Use Case Context: This is important for user experience as I want to provide immediate feedback explaining why certain dates (e.g., weekends, holidays, fully booked dates) are not available for selection.

Any guidance or workaround suggestions would be greatly appreciated.

Thank you for your time and support.

Best regards,
Daksh

[Praveen Balu]

Hi Daksh,

To disable specific dates in the SfDateRangePicker, you can use properties such as selectableDayPredicate, blackoutDates, or enablePastDates. However, once a date is disabled using any of these properties, user interaction will not be possible for those specific disabled dates and this is the current behavior of the SfDateRangePicker widget.

As a result, there is no direct support for selecting the disabled dates or capturing the tap events on the disabled dates, as you requested.

To address this limitation, we have developed a workaround by utilizing the specialDates and specialDatesTextStyle properties. This approach allows us to visually indicate the respective dates as disabled, rather than relying on the selectableDayPredicate. Below are the steps we implemented to achieve this behavior:

• We created a list named _disableDates to store the dates that need to be visually represented as disabled.

• The selectableDayPredicate callback was implemented to manage the logic for disabled dates and to store those dates into the _disableDates list. In this instance, it consistently returns true, ensuring that all dates remain interactive, including those marked as disabled.

• Since returning true makes all dates appear selectable, we used the specialDates property in monthViewSettings to assign the _disableDates list. These dates were then styled using the monthCellStyle property to visually resemble disabled dates.

• To handle interactions for the disabled dates, the onSelectionChanged callback was used to:

  • Display a SnackBar notification when a disabled date is selected.

  • Dynamically update the selection color to match the color defined in monthCellStyle for disabled dates, visually indicating that the date is not selectable.

We have attached the sample and demo for your reference, and you can modify the sample, based on your requirements.

Regards

Praveen balu.

Attachment: bd_759150_fcc1b95.zip