DatePicker: Add viewDate property

[jfermat]

Description

I am unable to migrate component Calendar to DatePicker.

In Calendar I have the attributes defaultHour, defaultMinute, defaultSecond, defaultMillise that in case I don't have any value it sets the default time according to its values.

In DatePicker these attributes do not exist and it sets the current time.

Describe the solution you would like

Add defaultHour, defaultMinute, defaultSecond, defaultMillisec attributes to DatePicker to perform the same functionality as the Calendar component.

Additional context

No response

[melloware]

This was also recently requested on Discussions: https://github.com/orgs/primefaces/discussions/2137

In PrimeReact this property is called viewDate see: https://primereact.org/calendar/#api.Calendar.props.viewDate

Date instance whose month and year are used to display the calendar.

i think we should call it viewDate to be consistent.

[jfermat]

The viewDate attribute would not be useful to solve the reported problem.

According to the migration from Primefaces 8.0.0 to 10.0.0 it is recommended to change the Calendar to DatePicker because the Calendar was deprecated.

The Calendar has the attributes to initialize the time in case the value is null.
https://primefaces.github.io/primefaces/14_0_0/#/components/calendar

Example:
<p:calendar value="#{calendarView.date}" defaultHour="23" defaultMinute="59" defaultSecond="59" />

However,DatePickers do not have them and I would need this functionality.
https://primefaces.github.io/primefaces/14_0_0/#/components/datepicker

[melloware]

Agreed. I marked this for 15.0.0

[tandraschko]

would be great ticket for sponsoring